These Woodruff keys are mostly used in machines, tools & automobile shafts ” to 2½” (6 mm to 60 mm) in diameter. 2-6 Antimony St, Carole Park QLD 4300, Australia Phone +61 7 3271 5424. . Min. ja 10 – 24 60 sh, sds, sd 1/2 – 20 108 sk 5/16 – 18 180 sf 3/8 – 16 360 e 1/2 – 13 720 f 9/16 – 12 900 j 5/8 – 11 1620 m 3/4 – 10 2700 n 7/8 – 9 3600 p 1 – 8 5400 w 1 1/8 – 7 7200 s 1 1/2 – 7 9000 warning: use of anti-seize lubricant on tapered cone surface or on bolt threads whenThis is our collection of frequently used reference tables for shop work. Centering shoulder tolerance: Ø ≤ 230 mm (flange sizes A120 – A300) → ISO j6 Nearly every shaft diameter has a corresponding standard keyway width and depth – this calculator helps you find it. Cut precision keyways. keyways /keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and. Flat and parallel feather keyways are used for 1/4” to 2-1/2” diameter shafts while delivering the same torque capacity as square and rectangular parallel keys. 2; ANSI Shaft and Hub Keyseat Dimensions for Woodruff Keys per. View Alternatives. S. Mount the adapter to the workpiece shaft using a full key in the shaft keyway and fill the half-key void in the opposite side of the adapter with a half-key (see Figure 6-22 B). Bushing with Collar A-Style 10 mm Dia. keyways available upon request. S. S. 0. The Woodruff Key numbers indicate normal key dimensions. Max. Max. ANSI/AGMA 9002-A86 presented pertinent data on dimensions, tolerances, and sizes for straight bores, tapered bores, keys and keyways for unmounted industrial flexible. Increase or reduce your shaft's diameter to fit equipment, or replace damaged shaft. Ruland needle-bearing universal joints are available in OD sizes ranging from 3/4” to 2” a plain bore or bore w/ keyway in sizes from 3/8” to 1” or 8mm to 25mm. 19-1997 ; Keyway Stresses for Non-metallic Gears and Shafts Formulas and Calculator; Shaft (Arbor) Keyway Dimensionl Data - ANSI/ASME B94. Unless otherwise specified, the shaft keyway is assumed to be standard. 1/16 (7) 3/32 (9) 1/8 (15) 5/32 (7) 3/16 (14) 1/4 (9) 5/16 (10) 3/8 (11) Show more. Woodruff keys are inserted into a key seat created by a woodruff key cutter or arbor cutter. 1 1. Sprocket Bore Tolerance & Standard Keyway & Set Screw Size Based Off Sprocket Bore Size. Imperial Tap Chart. BOX 2400 FORT SMITH, ARKANSAS 72902-2400 U. 0 Cart. ja 10 – 24 60 sh, sds, sd 1/2 – 20 108 sk 5/16 – 18 180 sf 3/8 – 16 360 e 1/2 – 13 720 f 9/16 – 12 900 j 5/8 – 11 1620 m 3/4 – 10 2700 n 7/8 – 9 3600 p 1 – 8 5400 w 1 1/8 – 7 7200 s 1 1/2 – 7 9000 warning: use of anti-seize lubricant on tapered cone surface or on bolt threads whenR Preload Keyway (Sizes 10,15 & 20 only) P Milled Flat (Sizes 05 & 07 only) Shock/Stroke adjust option not available with cushions, X Special. The following table includes standard rectangular shaft key sizes for shaft diameters ranging from 5/16" to 9": Standard rectangular key stock is readily available from most Gates Industrial Distributors. Spare engine that Briggs told me was identical that has a confirmed 1" shaft that is 3-5/32 long. Hansford’s 2022 direct list price: Model DA-15-A Manual: $26,900 *. 0. ANSI B17. Referencing Figure 1, the keyway dimension is W x T 1. During large master keying projects, where pinning is performed on site, normalized pinning kits are easy to use. Cam Bore Sizes: 55mm Babbitt, 55mm Roller/60mm Babbitt, or 60mm Roller. A woodruff key, also known as a half‑moon key, is a semi-circular machine shaft key that prevents gears, hubs, or other components from moving independently of a rotating shaft or spindle. Metric Key Keyway Dimensions. Height. 8 14 9. 83mm Long x 10mm Keyway Width x 3. The following tables show standard dimensions for keys and their grooves. 3. Face Width Face width is limited in its maximum dimension to allow proper clearance to provide for chain engagement and disengagement . 46: PART 1: 1958Hexagon Socket Head Cap Bolts (Excerpt from JIS B 1176 2014) Hexagon Bolts (Excerpt from JIS B 1180 2014) Hexagon Socket Set Screws (Excerpt from JIS B 1177 2007) Hex Keys (Excerpt from JIS B 4648 2008) Parallel Key and Keyway Sizes and Tolerances. dimensions contained in ANSI/AGMA 9002--A86 represented the dimensions and tolerances used within the industry for pre--engineered couplings. 50 NA0139-1993 KEYWAY AND KEY SLOT DIMENSIONS METRIC $14. 1. RoyMech Resources Keyways BS 46 :1958 Parallel Keys and Keyway Dimensions These Pages include various standards. AWG Copper Wire Properties. pdf Shaft diameterKey steel pulleys belts metric transmissions stationaryengineparts. Size mm 2X2 3X3 4X4 3X5 5X5 4X6 6X6 5X8 7X8 8X8 10X10 6X10 8X10 12X12 6X12 8X12 6X14 9X14 10X16 Size mm 7X16* 11X18 7X18 12X20 8X20 14X22 9X22 14X25 16X28 18X32 20X36 22X40 25X45 1. British ISO Metric Screw Threads Designations. Standard Practices- Reading Direction All dimension and note text must be oriented to be read from the bottom of the drawing (relative to the drawing format). The hub keyway is dimensioned by its width and depth on the shaft – keyway sides. 11. Reliable. xls Created Date: 1/23/2014 8:35:20 AM. 2 Broaches and 6 Bushings = 12 Keyway combinations. Keys standard metric keyways mechanicalMetric keyway shaft depth reference dimensions diameter iso r773 width Metric woodruff keys are supplied to din 6888 / iso 3912 in c45k keyKeyway metric dimensions keys. Key and keyway dimensions. 22 Piece, 1/8 to 3/8″ Keyway Width, Style B & C Keyway Broach Set TiN Finish High Speed Steel Broach, Collared Bushing, 1/2 to 1-9/16″ Bushing Diam List PriceKeyseats and Keyways. The key prevents relative rotation between the two parts and may enable torque transmission. A. 3. To remove, gradually loosen each screw in sequence until you can slide the coupling on the. A radius transition between the floor and wall increases the component’s durability, preventing cracks from stress peaks. For technical drawings and 3-D models, click on a part number. Feather keys are available in steel and stainless steel construction and inch and metric sizes. Technical drawing. 800-982-3141. 1875 0. Max Min Max Min 6/0 0. 401/2A Set, but for sixteenth. 3750 7/16 . Cut precision keyways— these sets include broaches, bushings, and the necessary shims. 90. 2-1967 (R1998) - Engineers Edge. . 202 to 1012 Height Width Diameter Actual Length Full Radius Flat Bottom Distance Key Below Center No. Press it into place for use in high-torque applications or to replace a key in a worn keyway. Each tooth’s cutting edge is a few thousandths of an inch larger than the one before. Keys and key stock are small metal bars or wedges that fit between an output shaft and the hub of a pulley, gear, sprocket, or other rotating component. Black. 8. This is a Metric Key Keyway Dimensions Per ISO/R773 - Js9 Width Tolerance. 5 63 32 290 —0. Design of Square Key and Keyway (Wood Ruff) Stress, Shear and Torque. Maybe a second look is in order. 250 0. ANSI B17. . xls Author: KEITHPrice and other details may vary based on product size and color. 375 inches wide, and 1. Key Type. 76 7 EQS-B2-2 2. Double set screws are standard in all bores 1/2 inch and over. Install a sanding sleeve on the threaded shaft of a bench or pedestal grinder using one of these drums. Re-design the shaft shown below to be a uniform,Metric woodruff keys are supplied to din 6888 / iso 3912 in c45k key All torque transmissions resourcesKeyway chart bore resources torque alltorquetransmissions. . Consent to Cookies & Data processing. A. Dimensions of shaft keys, standardized many years ago, are commonly considered to be the main concern in applying these devices. the Keyway After. In stock and ready to ship. Use individual keyway broaches in a variety of arbor hole sizes. . 99. Rectangular or square parallel keys and their corresponding keyways (Dimensions in millimetres) 95. Compare. 1 Keyway width. Key standard sizes shaft failure theories ppt powerpoint presentation diaMetric woodruff keys are supplied to din 6888 / iso 3912 in c45k key Keyway chartKeys standard metric keyways mechanical. Screw-cutting (tapping) Screw-cutting from the tooth section will be performed from the tooth bottom (root of the teeth). Keyway broaches are used for producing keyway-shaped holes in a workpiece. Nr. Keyseat Cut Style. Model: 407777. Cut precision keyways. - Series F couplings supplied with 4) All dimensions per AGMA 9002-A86 interference fit bores without set screws commercial standards. This key seems undersized on both counts. When screw-cutting is required for two sections at an angle of 90° (or 120°), screw-cutting will be performed atStud-Driven Keyway Punches. 5 mm × 3. Circular-Keyway Master Keyed Cam Locks. 225 Standard Shapes and Metric Sizes of Mounted Wheels and Points 226 Lapping Lubricants 226 Sharpening Carbide Tools 227 Silicon Carbide Wheels (Continued) GRINDING WHEELS 227. JR-4 made of tough Zytrel® material – will not rust, no lubrication needed. Specifying English Keyways In the English system, it is standard practice to dimension keyways. Below is a reference on shaft diameters and the corresponding keys / keyways according to the prevailing standards. Beyond Taper End of Taper to End of Thd Ke Fillet Radius b R Taper Length Nom Shaft Dia. Steel C45 Plain. Taper metric dimensions keyway key bs 1972 keyways keys. Keyway Width; 3/16 " 1/4 " 5/16 " 3/8 " ways. These explain the sizes and dimensions required by different keyway families according to different. Select what material the tool is made from, either HSS or Solid Carbide, and what coating it has (if any). 6 mm (25 Each) Key Size 2 mm × 2. Nominal Diam. 0340 120 NS . 3 10 8. This key stock is undersized, so keys will fit slightly more loosely than standard keys and are best for inconsistent keyways. Step Machine Key Stock. I am using stock drive parts to build a cog belt drive. In Stock . The last two digits give the nominal diameter B in eighths of an inch and the digits preceding the last two give the nominal width W in thirty. Metric Key & Keyway Dimensions Per ISO/R773 – D10 Width Tolerance ‡. ISO/R 774:1969. 424 Minimum 2. wide at the top. 4mm 1mm 1. 3D Printing & CAD. ANSI/AGMA 9002-A86 was based upon the design criteria related to bores and keyways in coupling hubs that had evolved over many years of successful industry practice. 3 16 10. Fasteners. For milling machines having # 30, 40, and 50 national standard taper spindles. BARR. Dec. Shaft with Two Keyways Torque Applied Deformation and Stress Equations and Calculator. Screw-cutting (tapping) Screw-cutting from the tooth section will be performed from the tooth bottom (root of the teeth). recommendations except for the bore sizes marked* which are shallower. ISO/R 773:1969. - Series F couplings supplied with 4) All dimensions per AGMA 9002-A86 interference fit bores without set screws commercial standards. Use with an arbor (sold separately). 4541 (AISI 321) 1-045 - 050 - 055 - 70617. Arbors are complete with assorted width arbor spacers and running bushings as listed below. The height of metric keys decreases by 1 mm for every 100 mm of length. Keyways cut in certain area’s on the shaft. Keyway keyways dimensions taper keys Guide for shaft keyway design, shaft key size calculation and selection Internal keyways. ANSI Key No. Fract. Keyway Depth Dimensions In Inches Keyways are British Standard Imperial B. Shaft heights The following tolerances apply to the indicated dimensions: Foot-mounted gear units: Check the motor diameter because it may project below the mounting feet. $17. Shaft Keyway. Nominal Bore Diameter Clearance Bore Interference Bore Keyway “T”-DIM +0. Undersized Machine Key Assortments Since they fit more loosely than standard keys,. on each of the shafts over the keysCorrosion-Resistant MiniatureRoller Chain and Links. Bushings for Keyway Broaches Use individual keyway broaches in a variety of arbor hole sizes. D. 000 -0. The commonFull Length Pre-Keyed Shafting. 3mm Keyway Depth. 1265 0. Use these end mills for general purpose keyseat cutting in a wide range of material, including aluminum, iron, and steel. Article options / Table. 026 71 . A list of standardkeyway and corresponding key sizes for English shafts are listed below in Table 1. 8. Keyway (Shaft. ANSI Sprocket Standard Keyway & Setscrews. Keyway (Hub) Radius r. Table 1 details the appropriate key slot and key sizes for various metric bores. 5. 5 Recommended hub keyway dimensions 8. Slightly larger than the size listed in the table, oversized stock fits tightly in a keyway. 8. The dimension from the top of the keyway to the opposite bore side, “T-dim”, is calculated from (refer to ANSI/AGMA 9002-B04) the following: T = bore + (h kw - Ch) Keyway Dimensions: Melting Points: Metric Tap Chart: O-Ring Sizes: Pipe Threads: Screw Extractors:. Undersized Machine Key Assortments Since they fit more loosely than standard keys, these undersized keys are best for uneven keyways or when you need to disassemble parts frequently, such as during maintenance or prototyping. 4. The channel, or keyway, gives a pulley or sprocket a spot to lock onto the round bar using a square piece of metal known as a key. 174 products. These shafts have keyways only on the ends, leaving a plain shaft in the center. O. In this case, there is no keyway on the shaft. 1/2″ Inside x 1-1/8″ Outside Diam, Two Piece Rigid Coupling with Keyway. When selecting the set screw size, you should select a size where the indentation on the end of the screw is apparent on the cylindrical surface of the shaft. D. 3mm 2. Min. var. The Keyway - 13 March 2013 Edition Documents. Moorland Rd. 109 - - 0. To confirm the status of any standard, identify the replacement standard if it is obsolete and/or purchase the standard please use. Bushings rest inside the arbor hole of your workpiece and act as guides to ensure rigid and accurate keyway cutting. ISO/R 774:1969. 19-1997; Design of Square Key and Keyway (Wood Ruff) Stress, Shear and Torque; Metric Key Keyway Dimensions Get In Touch. 401/2 Heavy Duty Set Same as No. Press it into place for use in high-torque applications or to replace a key in a worn keyway. 001 −0. 2. They conform to ANSI B17. Average Weight (Approx. Index the adapter 180 degrees on rotor shaft (see Figure 6-22 C). 3 Dimension from top of keyway to opposite side of bore. Length Thru Bore (LTB) British ISO Metric Screw Threads Designations. 25-inch-stroke 327 crank in a 3. 6 - M 18. Keyway Chart. ' . Dimensions and tolerances of metric keyways for parallel keys (source:BS 4235-1: 1972)The dimensions of both keyseats and keyways can vary depending on the application, but there are some standard sizes that are commonly used across industries. Add to Cart. 000. Sanding Sleeve Drums for Threaded Shafts. G&G Manufacturing Company 4432 McKinley Street P. These Woodruff keys are mostly used in machines, tools & automobile shafts ” to 2½” (6 mm to 60 mm) in diameter. Bushing with Collar Shims: Aluminum, Brass, Bronze, Iron, Plastic, Steel: 0000000: 0000000: 15: A-Style Broach for 1/16" Wd. Huyett custom manufactures machine keys of these types and others in your choice of size, material, and tolerance. Standard External Metric Thread and Fastener Sizes M 0. g. Web Price. Type: 0112 E1. 11. Key & Keyway. Choose from our selection of slotting cutters, including over 375 products in a wide range of styles and sizes. Designation - designated as: A parallel key of Type A, width 12 mm, height 8 mm and length 50 mm shall be Parallel Key A 12 x 8 x 50 The keyway specified dimensions shall be at least 1-1/2 in. Nominal Key Size W x D Min. Face Width Face width is limited in its maximum dimension to allow proper clearance to provide for chain engagement and disengagement . Slightly larger than the size listed in the table, oversized keys fit tightly in a keyway. In manufacturing upon 6885 Information used with permission ot Martin 02007 Shatt Keyseats/Hub Keyways Standard Keyseats/Keyways Sra' IoW Square Keyways Metric: WxHKey W x T2 Keyway American Standard — Inches Shan 6. 2870 (1) 0. * Common dimension specification Dimensioning and specifying Metric keys and keyways varies significantly from the English system. One of the following methods should be used to specify keyways: Metric: WxH Key W x T2 Keyway British. Browse Metric Set Screw Couplings w/Keyway MRC-Series in the Climax Metal Products Company catalog including Item #,Bore,OD,Length,Screw Size,Keyway Size,Material,Weight,CAD 800. Max. To create a keyed joint, a key is used that fits between slots manufactured into the two parts being joined. In stock and ready to ship. The minimum width is limited to provide the proper strength to carry the imposed loads . Keyway (Shaft. are also known as plain metal slitting saws. Keys shaft rectangular types key chart hub designs tapered machine selection5/8" od keyed shafting with a 3/16" full keyway Metric key keyway dimensions per iso/rtt3 js9 widthMetric key keyway dimensions. 00 ISO 2492:1974. - Series F couplings supplied with 4) All dimensions per AGMA 9002-A86 interference fit bores without set screws commercial standards. Offering more security than standard master keyed cam locks, these have. Choose from our selection of roller chain sprockets, including sprockets, flat sprockets, and more. --keyway dimensionsKeyway chart diagram hallite. Typically, the sprockets are secured to the shaft using an ANSI standard dimensioned keyway and one or more set screws. Max. They have a centering design for accurate alignment. per. Use them to connect gears and other components with tapered keyways to shafts. The commonspecification. Mating angular locations, diameters, key/keyway sizes, any other interchange-ability dimensions for indexing the bulb base in the bulb holder. D. 93. 3 1. 588 1. Rectangular or square parallel keys and their corresponding keyways (Dimensions in millimetres) 95. Sure! Bobcat engine currently installed is: Model: 405777. Woodruff key is a easily adjustable key, with a hammer blow to the key. --keyway dimensionsKeyway chart diagram hallite. Taper keys with or without gib head and their corresponding keyways. The purpose of the key is to make a solid connection in the assembly by snuggly fitting between the shaft and the gear. 401/2 Heavy Duty Set Same as No. . To. 47 / ea. Keyway and Key Size Dimensions * Common dimension specification English Standard Keyway and. Choose from our selection of motor adapters, including hydraulic pump-to-motor mounts, set screw flexible shaft couplings, and more. Choose from our selection of V-belt pulleys in a wide range of styles and sizes. Keyseat Alignment Tolerances: A tolerance of 0. Page 7/11Ansi B17 1 Standard Keyway Dimensions LowellcorpAs this ansi b17 1 standard keyway dimensions lowellcorp, it ends up living thing one of the favored ebook ansi b17 1 standard keyway dimensions lowellcorp collections that we have. RoyMech Resources Keyways BS 46 :1958 Parallel Keys and Keyway Dimensions These Pages include various standards. For example, Gear drives, Pulleys or Sprockets are connected securely using keys to the power transmitting shaft. The primary function of keys and keyways. These keys have a rounded shape that makes them easy to remove when parts need to be taken apart frequently, such as for maintenance or prototyping. 29 with shaft Ø 30 mm according to DIN 6885-3 (low form) Flanges Error! Bookmark not defined. Allowance must be made for keyway and setscrews . Key Stock is cold drawn to exacting tolerances with sharp corners, perpendicular and parallel sides, and smooth, bright surface finishes. For a key to function, the shaft and rotating machine element must have a keyway and a keyseat, which is a slot and pocket in. A wide range of contact sizes, supported wire and insert arrangements IAW MIL-STD-1560 are available. Stud-Driven Keyway Punches. 2188″ Cut Width, 1/2″ Shank Dia, Straight Tooth 2. 155 Keys and Keyways for Milling Cutters 156 Woodruff Keyseat Cutters KEYS AND KEYSEATS 157 Depth Control Values for Shaft and Hub. 4 Maximum keyway offset tolerance, N. Nominal Shaft Diam. Metric – Rectangular. . To remove, gradually loosen each screw in sequence until you can slide the coupling on the. 11. Figure 1. A detail drawing of a gear would also include other dimensions not found in the table (root diameter, bore diameter, keyway dimensions). As bushing bores approach the maximum recommended diameters, keyway depths are reduced in order to extend maximum bores as much as. 29 with shaft Ø 30 mm according to DIN 6885-3 (low form) Flanges Error! Bookmark not defined. Undersized Machine Key Assortments Since they fit more loosely than standard keys, these undersized keys are best for uneven keyways or when you need to disassemble parts frequently, such as during maintenance or prototyping. Straight-sided splines for cylindrical shafts with internal centering — Dimensions, tolerances and verification. For KeywayCarbide Staggered-Tooth Keyseat End Mills. max. English Standard Keyway and Key Sizes. But ensure the weakened shaft can support the load. Keyway Dimensions: Melting Points: Metric Tap Chart: O-Ring Sizes: Pipe Threads: Screw Extractors: Sheet Metal Gauges & Weights: Socket Head Cap Screws: Taper Calculations:. 401/2A Set, but for sixteenth. xls Author: KEITHConnect and separate threaded rods, studs, and other components. Sign-In Create Account. ANSI Woodruff Keys. Bulb Holder Interchangeability Dimensions and Tolerances. The most common keyway combinations for large keyways and bores. Keyway Standards – IMPERIAL 2. Browse Metric Set Screw Couplings w/Keyway MRC4H-Series in the Climax Metal Products Company catalog including Item #,Bore,OD,Length,Screw Size,Keyway Size,Material,Weight,CAD 800. Woodruff keys are usually with splines and the L-LOC spline clamping feature, see section 7. Keyway dimensionsMetric key keyway dimensions per iso/rtt3 js9 width Inch keyway chart ansi agma shaft key width b4 dimensions diameter nominal reference motor electricKeys keyway metric standard keyways sizes engineering shaft key parallel square fit fits mechanical data rectangular british limits figure. Groove dimensions keys DIN 6E-ga Shut 1 (With • 1972. Standard sizes in diameters from 3/8″ to 2 1/2″. They have internal threads. Standard External Metric Thread and Fastener Sizes M 0. REFERENCE DEPTH. 2 Broaches and 6 Bushings = 12 Keyway combinations. 3 1. Shaft Couplings. Standard and metric keyway broachesKeyway sizing chart Standard keyway dimensionsKeyway sizing chart. Arbors and arbor spacers have standard keyways. Nominal Size Square Key: Shaft (Arbor) & Key: E : E : F : F : Hole Dia. 11 8. The tolerance zone for shaft keyway width b with normal fit is ISO N9 and with close fit ISO P9. C Designates a C flange/face mounted motor, e. Finished Bore sprockets are machined to ANSI standard tolerances with one keyway aligned to the center of a sprocket tooth and with two set screws. Min. Account. Thickness of web. 625″ OD, For Split Taper Sprockets & Sheaves. ) max. Standard Plain and Gib Head Keys Specifications per. . 2. WIDTH. NOMINAL SHAFT DIAMETER. Keyway A-Style. 0350 62 . Available in 3 standard sizes; round, hex, splined, or keyway bore. Also known as chassis punches, these tools cut through sheet metal to make holes for installing panel cutout switches. PARALLEL KEYWAY DIMENSIONS - METRIC - BS4325:1 1972. Tough. 6552 ProductsBS 46 Rectangular Taper & Gib Head KeyWay & Key Dimensions Ref Standard . 4375 Page 1 of 6. Best of all, defense and commercial aerospace customers, as well as land and. Gear Products and Suppliers | Gear Knowledge Menu. Keyway broaches are used for producing keyway-shaped holes in a workpiece. Mating diameter, width, depth, and surface finish of seal groove, surface, or other pertinent sealing features. Slightly larger than the size listed in the table, oversized stock fits tightly in a keyway. The key should fit snuggly in the keyway with minimal side Standard keys should be the same length or slightly longer than the keyway in the hub. Dimensions in: inches - millimeters Inch table. S. 2040 | Optional Services hone: 1-800-877-8351 Keys and Keyways High Type DIN 6885 Metric, Page 1Width of key, W = D/4 Thickness of key, T = D/6 Height of key, H = 1. 4571 Stainless Steel (AISI 316 TI) * = W. 6552 Products Slightly larger than the size listed, these oversized keys offer a tight fit in worn keyways. R8 Collets. The slot is defined as a keyway or a. 875-inch-bore 283 block builds a 307ci engine. We carry a wide range of products with keyways, including. Compatible with CNC machines for automated and precise keyway cutting: Milling can be integrated into CNC machining processes,. ) Millimeter Bore Inch Bore Bushing Stock Bore Range Maximum Standard Shallow Minimum Keyway Keyway #Important — The metric system does not refer to keyseat or keyway dimensions as does the English system; instead dimensions are given for the key itself which is. , depending on the lock nut size: Mating shaft threads (recommendation)In addition to the standard numbering system for frames, there are some standardized variations that are denoted by the following suffixes to the NEMA number. Shaft Key Seat Depth Control Values S and T for Shaft and Hub ANSI B17. Also known as offset key stock, use step keys to repair keyways in gears and shafts. Unless otherwise specified, the shaft keyway is assumed to be standard. 1250 0. See Fig.