The second is a P9 tolerance. ISO 286. In general, the dimensions contained in ANSI/AGMA 9002A86 represented the dimensions and tolerances used within the industry for pre- -TruKey® Shafting from Keystone is designed to provide the straightest, most accurate keyed shafting, in the industry. Many keyways are milled directly into a shaft or broached into the. Keyway metric key iso dimensions standard keyways keys r773. Frequently Used Fits. 1Woodruff Keys. 406 Minimum 3. KeyWay /Key Dimensions. Don’t forget that the world-famous All Torque Transmissions keyway chart is available on our website. Metric pdffillerWoodruff key cutter size chart Woodruff key size chart metricMetric key keyway dimensions per iso/r773. The fit designation ranges from clearance fits to interference fits. This may also be written in this standard are intended for single key appli- a s shaft keyseat or hub keyseat when describing cations only. n When referencing the Lovejoy UPC number in this table, include 685144 as a prefix to the number shown. The webpage also links to a technical data sheet for slewing bearing. 3 or below. 25 m (250 mm) Lengths. . Mechanical Tolerance Chart Data. ‡ For any bore fit per table below. ISO Hardware Specifications Table. 625 / . Rectangular Keyways Metric; WXHKey W x T2 Keyway ISO Standard — mm Snart Dlameter WI dth Groove dimensions keys DIN 6E-ga Shut 1 (With • 1972. Free running fit not for use where accuracy is essential, but good for large. It represents the actual shape of the component’s planar features retaining the ideal plane condition. O Øo. Max. Recommendations for key size, length and keyway depth as a function of shaft diameter are provided in ASME Standards B17. Keyway chart sizing key shaft engineeringShaft diameter solid keyway uniform shown re text below factor gears safety transcribed show Metric key keyway shaft standard keyways falk keys bores resources. The standard tolerance for the hole of grade 8 (IT8)= 25 i= 25 × 0. The advantage of the Js9 tolerance is that the key can be inserted and theEngineering, Manufacturing Tolerance Limits Fits Charts. The tolerance zone for shaft keyway width b with normal fit is ISO N9 and with close fit ISO P9. 2500 0. 5 +0. Frequently Used Fits. Key & Keyway Dimensions - Millimeters. 40. If you are looking for a comprehensive and reliable source of information on jaw type couplings, you should download the Jaw Type Catalog PDF from Lovejoy, a Timken company. 3. FREE RUNNING: Good for large temperature variations, high running speeds. Metric module, side fit. Lid Chart. com ©2004-2021 Kramer Power Equipment Co. Loose running fit for wide commercial tolerances or allowances on external members. They conform to ANSI B17. British Standard Metric Keyways for Square and Rectangular Parallel Keys 11 5/16 3/8 7/16 1/2 3/4 3/4 7/8 Nominal Diameter, d 6 1/2 7 1/2 9 Square Keys preferred for shaft diameters above this line: rectangular keys, below Key 3 3/4 4 1/2 5 1/2 Shaft Key Size Versus Shaft Diameter ANSI B17. 120. 5 m (500 mm) Lengths (19. keyways /keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keys. Minimum keyseat width is that figure. Also see Table of Shaft Tolerances per. The following Engineering calculator will show the plus and minus tolerance for the specific ISO 286 hole tolerance data. 5-2009 standard has defined. The very simplest method of initially selecting of involute spline based on a shaft dia is to arrive at an initial Pitch circle dia (D) and a module (m). 4: 2. Key Dimensions The inch and metric dimensions here correspond to common values. A sprocket with an internal parallel keyway. A tolerance given that defines how far from a perfect line a feature can be. 65) Nominal dimension Tolerance Zones over to U7 S7 R7 P7 P9 N7 N9 M7 K7 J7 JS9 H7 H8 H11 G7 F7 F8 E8 E9 D10 deviations in µm 1 3 -18 -14 -10 -6 -6 -4 -4 -2 0 +4 +12. S2=Tolerance of h× 2 1 S1=Tolerance of b× 2 2. i have had more problems with internal keyway not parallel to bore more than . 8mm 2. 342 Minimum 3. Rexnord Industries, LLC, Coupling Group 427-108 5555 S. Table aii-12. The first set indicates the pitch diameter tolerance, and the second set indicates the major diameter tolerance. Keys and keyways BS 46 Part 1 : 1958 Keys and keyway Dimensions-Parallel Rectangular Adve Radius 0. Keyway sizing chartStandard keyway dimensions Standard shaft sizes key bushing table qd non bore keys shallow range gates includes specific each alsoGates belts, hoses,. 350 Maximum 2. For a key to function, there must be a keyway on the shaft and a keyseat on the rotating machine element. Metric key keyway dimensions per iso/r773. Specification. Top. Get a quote +61 7 3271 5424. Oversized. All dimensions are in millimeters. 8mm 1. 7") 0. Whereas the P9 tolerance is a press fit tolerance. Types of Keyways: Keyseating broaches are used for producing keyway-shaped holes in a workpiece. 376 . INTRODUCTION — The general practice in industry is to supply coupling hubs without fillet radii in the keyway corners to permit the use of standard commercial keys instead of keys with chamfered. The lower Limit for the shaft = Upper limit for the shaft – Tolerance For shaft. The class fit is specified by tolerance grade (numeral) and by tolerance position (letter). Tolerance for Lengths of Chamfer Portions (Corner Roundness and Corner Chamfer Sizes) Unit [mm] Tolerance class. All internal calculations are done using metric millimeters. 010/-/000 for all standard keyways. 020: 0. 5000 2. Fit Charts. Bore Tolerances Keyway & Setscrew Sizes Setscrew Locations; Mathematical Equations;. Rectangular or square parallel keys and their corresponding keyways (Dimensions in millimetres) 95. While a designer is free to specify any keyway they wish, straying from the standard option is likely to increase the cost, time, and complexity of the part. keyways /keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keys. DIMENSION TOLERANCE ` FRACTIONAL 1/64 ANGULAR 0. 001" / - 0. Specifies that statistical process controls can be used which may be more cost effective in some. 5 +10 +14 +60 +12 +16 +20 +28 +39 +60Keyway dimensionsKeyway sizing chart Metric stepper motor shafts size data tableMetric key keyway dimensions per iso/rtt3 js9 width. The s i z e s and tolerances contained groove in a sha€tor hub. 032 * 0. , depending on the lock nut size: ANSI/ABMA Std. For those engineers who wish to put a square peg. web keyway js9 tolerance chart the keyway broaches made of hss in tolerancejs9 p9 h9 according to din 6885 are furnished with shims and for the use on materials up to hrc30 br285 tolerances h11 h9. RC - Running or Sliding Fits ; LC - Clearance Locational Fits ; LT - Transition Locational Fits ;Along with keyway size tolerances and keyway depth sizes, some standards also provide information on the recommended key size and keyway depth as a function of shaft diameter. Check out this Dowel Pin Slip Fit Tolerance Chart for further consideration on slip fit tolerances. 7530 3. 000. Useful Data On Limits & Fits and Keyway Sizes - TNN Engineering. Interference Fit Bore Tol. Keys and keyways. 5 Hope that helps . Standard Metric Keys & Keyways for Metric Bores with One Key. Keyseat Alignment Tolerances: A tolerance of 0. Engineering Hardware Design Data. ISO Tolerances for Shafts (ISO 286-2) Nominal Shaft Sizes (mm) over. XX 0. You could not by yourself going with books store or library or borrowing from your contacts to way in them. 251 for keyway. In this case, the torque that can be transmitted when a key is added to the shaft is approximately 12 percent lower than the torque that can transmitted by the plain shaft (393 Nm vs 447 Nm). 332 Maximum 3. However, determining the final limits can be time-consuming and involve navigating complex charts. REFERENCE DEPTH. 120. This is a ± band clearance where the value of the tolerance is equally oversized or undersized. 65) Nominal dimension Tolerance Zones over to U7 S7 R7 P7 P9 N7 N9 M7 K7 J7 JS9 H7 H8 H11 G7 F7 F8 E8 E9 D10 deviations in µm 1 3 -18 -14 -10 -6 -6 -4 -4 -2 0 +4 +12. ISO/TC 14. Machine keyway to recommended size and tolerance listed per Table 4 on Page 3. WooHoo! You subscribed successfully. 1. 1-1/16 1-1/8 1-3/16 1-1/4 1-5/16 1. DIN-Keys & Keyways to ISO Diameter d in accordance to DIN 6885/1 in accordance to DIN 6885/3 above to Width b 1) Depth h Shaft Keyway Depth t₁ Hub Keyway Depth d = t₂ Width b 2) Depth h Shaft Keyway Depth t₁ Hub Keyway Depth d = t₂ mm mm mm mm mm mm mm. d. For all bore and shaft sizes not listed below use same tolerances and fits as next larger size. 018: 4: 0 -0. * These Width A values were set with the maximum keyseat (shaft) width as that figure which will receive a key with the greatest amount of looseness consistent with assuring the key's sticking in the keyseat (shaft). The upper limit for the shaft = 40. 0. Shaft Key Seat Depth Control Values S and T for Shaft and Hub ANSI B17. 127 R Max Typ See Detail B K Ø Ref KK Ø All Around MM Ø and Sides of T1 or T2. Oversized. Keyways will be furnished per ISO/R773 and Js9 width tolerance unless otherwise specified. 015. 0005-. 25 - M 1. Related Resources: gears Shaft Diameter vs Key Sizes Design Recommendations. However. They may be used with shims if the depth cannot be broached in a single pass. broached internal keyway possibly has larger than . 628 2. 442 2-5/16 2. Shaft Diameter. The combination of angular and parallel misalignment within a system may be more detrimental to the coupling and equipment thanNotes: Inch bore and keyway tolerances conform to ANSI/AGMA 9002. Refer to 427-140 for keyway dimensions. Keyway Depth. center of the keyway. H7/h6. 250 +0. REFERENCE DEPTH. 1. It is also possible to make a calculation. 5. 469 Minimum 3. Iso Keyway Tolerances P9 Pdf Thank you very much for reading Iso Keyway Tolerances P9 Pdf. , depending on the lock nut size Mounting slots according to DIN 981 HM/HME and HM . You will also find. 4. Select the Woodruff Cutter from the tool menu (Note: Keyseat cutters are referred to as Woodruff cutters for feeds and speeds): 4. Woodruff key is essential for operating high speed. Nominal Shaft Diam. Tolerance is the total amount a dimension may vary and is the difference between the upper (maximum) and lower (minimum) limits. Strict Tolerances. N = Number of splines. Parallel keys are the most common form of keyway. 6. S1 S1 S1 l 6. The standard ISO 286 defines the system of tolerances, deviations and fits only for basic sizes up to 3150 mm. Rockwell B80. TOLERANCES ISO. Fillet radii comply with AGMA 9002-A86. 0625 0. 0000 0. Metric key keyway dimensions per iso/r773. NOMINAL SHAFT DIAMETER. General dimaensional tolerance of cut width Unit:mm Table 2. Select between millimeters and inches the unit of measure the results will be displayed. 4235 : PART 1 : 1972Keyway Cutter Hole Keyway Dimensional Data for MIlling Centers and Arbors - ANSI/ASME B94. Width Tolerance Height Tolerance + 0. XXXX 0. In a slip fit tolerance, a certain amount of clearance exists between mating parts. Straight-sided splines for cylindrical shafts with internal centering — Dimensions, tolerances and verification. 00100 in/in (mm/mm) over 1800 rpm. General Tolerances (Excerpt from JIS B 0405 1991/JIS B 0419 1991）. Gear Products and Suppliers | Gear Knowledge Menu. anit. 3mm 2. 8. Keyway (Shaft. shaft tolerance table (iso) ≥ ＜ b10 c9 d8 e7 e8 f7 g7 h6 h7 h8 js7 k7 m7 n7 p7 r7 s7 t7 - 3 +180 nema quick reference chart nema frame de2f h nop uvaa ab ah aj ak ba bb bd xo tap 42 2-5/8 1-3/4 1-11/16 9/32 1-1/2 54-11/163/8 1-1/8 3/84-1/32 1-5/16 3-3/4 3 2-1/16 1/84-5/8 1-9/16 1/4-20 slot 48 3 2-1/8 2-3/4 11/32 1-7/8 5-7/8 5-11/161/2 1-1/2 1/2 4-3/8 1-11/16 3-3/4 32-1/2 1/85-5/8 2-1/4 1/4-20 slot Coupling Interchange Chart Gear Couplings QF25x2-1/2 (hub size followed by bore size). For example, Gear drives, Pulleys or Sprockets are connected securely using keys to the power transmitting shaft. 003-0. Use them in light duty applications to connect gears and other components to shafts. 459 Maximum 3. The hole basis fits have four preferred hole tolerances (H11, H9, H8, and H7); the shaft basis fits have four preferred shaft tolerances (h11, h9, h7, and h6) as shown in Table 6-1. 1 0. 2388 State Route 726 Eaton, Ohio 45320 (937) 456-2232 Fax (937) 456-2282 webmaster@kramerusa. 05 0. No external flange. 3 90-400-0. Rockwell B50. 050 +0. 010 Height (d) (t) - DIM Keyway Width (w) AGMA 9002-A86 Inch Bore and ANSI B17. 432 / . Minimum keyseat width is that figure permitting the largest shaft. 3. radius. In particular, tolerances are assigned to mating parts in an assembly. AA dimensions shown in chart are Baldor typical values meeting or exceeding NEMA. Shaft Diameter. 10. Durometer 85D. . Bore Size Chart. 2 (1978) and ANSI B4. Keyway key parallel jis sizes tolerances 1301 mm 1996 pulley excerpt unit techKeyway metric Table aii-12. The key length should be less than about 1. Machine keys – also called shaft keys or key seats - are removable machine elements installed between shaft key seats and hub keyways to transmit torque in power transmission assemblies. Read more on how keys and keyways work and what types are available – Keys. The bottom circular portion is placed in the shaft by. Keyway depth and fillet radius per BS 4235. Mm Shaft Diameter Groove dimensions for woodruff keys DIN 6888. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright. It may be mildly magnetic. Key and keyway dimensions (Control in Motion) Check Details. 7505. Keyways will be furnished per ISO/R773 (DIN 6885/1) and J s9 width tolerance unless otherwise specified. BS 46 Part 1 : 1958 Square Keys and keyway Dimensions. Keyseat Alignment Tolerances: A tolerance of 0. The following is listing of those standards: Standard Description BS4235 P Woodruff keys and keyways – same as ISO 391 BS46P1 Specifications, Keys and Keyways – obsolete CSAB232 Keys and Key seatsNSI Shaft and Hub Keyseat Dimensions for Woodruff Keys per. XXX 0. Undersized. 5 m (500 mm) Lengths (19. Keys and keyways, splines. The chart (Figure 3-1) below shows a comparison of the droplet sizes of various types of metalworking fluids. 5 +10 +14 +60 +12 +16 +20 +28 +39 +60 Keyway dimensionsKeyway sizing chart Metric stepper motor shafts size data tableMetric key keyway dimensions per iso/rtt3 js9 width. Rockwell B87. Avoid tolerance buildup by dimensioning from another dimension, as cumulative tolerances will lead to dimensional. 006″tolerance chart Keyways Js9 and P9' 'keyway tolerances Mechanical engineering other topics May 12th, 2018 - For shafts 10 to 22mm diameter the keyway key depth tolerance is 0 1mm and it is 0 2mm for shafts 22 to. 1/16" 3/32". 40. Tolerance Rating. The first is Js9. • Explain the circularity tolerance. Thru Width "W" Height "H" Nominal Min. look. WIDTH. Rotary Table - Indexing Chart Worm Gear Ratio 90:1. 3) Keyway fillet radius to be specified by customer. This standard defines the bore and keyway tolerances to be used for V-belted sheaves. 1 9. Standard Keyways and Setscrews Diameter of Shaft Keyway Width × Depth Setscrew Diameter of Shaft Keyway Width × Depth. Their extra depth in shaft reduces the overturning tendency in its keyway. For Hub Keyway Height. In order to avoid stress concentration, leave radii on the keyway corners. Select the Material. 4. Iso Keyway Tolerances P9 Pdf Right here, we have countless ebook Iso Keyway Tolerances P9 Pdf and collections to check out. Lovejoy supplies ‘metric’ dimensioned ‘F’ hub straight bores with bore and keyway tolerances conforming to the ISO 286-2 standards for a P7 interference fit unless otherwise specified. MIKI PULLEY Clutch and Brake Standard Hole Drilling Standards. • Define the perpendicularity tolerance. Tolerances and fits peculiar to broach cutting tools require extra thought. 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. The first is Js9. DIN 6880. BS 46 Part 1 : 1958 Square Keys and keyway Dimensions. 010 inch, max is provided for offset (due to parallel displacement of keyseat centerline from centerline of shaft or bore) of keyseats in shaft. 3. Over 400 to 1000 incl. Check Details. 5 H11/g8” to specify tolerances. 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 Keyway Bore Diameter Size Bore Reference -0. The common The hub keyway is dimensioned by its width and depth on the shaft – keyway sides. Woodruff keys work well near shaft shoulders and on tapered shafts. Aspen Fasteners offers the following sizes for immediate delivery from stock: Diameters ranging from M5 to M14 and up to 90mm long and available in 316Ti stainless steel. js9 width Metric keyway sizes. The charts are organized into two sections. H8/f7. BS 5686:1986, ISO 14-1982: Specification for straight-sided splines for cylindrical shafts: metric nominal dimensions, tolerances and gauging requirements. 99. Class V Locational Interference Tolerance Table Chart; Class II Fit Free Fit Tolerance Chart for Holes and Bolts per McDonald Douglas Design Guide "Machining Tolerances". • Describe the profile of a surface tolerance. Created Date:tolerances, poor installation practices, thermal growth or shrinkage, foundation movement, and/or component wear. Table of Metric Shaft Tolerances per. dIt is used in non-mating assemblies like bearing bushes fitted into the bearing housing, key fitted into the keyway, etc. The standard tolerance for the shaft of grade 7 (IT7)= 16 i= 16 × 0. One of the following methods should be used to specify keyways: Metric: WxH Key W x T2 Keyway British: WxH12 Key W x H Keyway ISO Standard-mm Imperial -Inches * Groove dimensions for woodruff keys DIN 6888 in accordance with DIN 6885 Sheet 1 (with back clearance) BS 4235 Pt. Rectangular or square. They are also designed to protect a power transmission application by failing first, which protects other component. 3. clearance. Loose running fit for wide commercial tolerances or allowances on. 3/8 . Metric External Table Chart Thread Designations Sizes M 1. 312 / 2. DIN 6888. Over 1000 to 2000 incl. Dimensioning and Measurement of a Key Way [ 1] •. 3810. --keyway dimensionsStandard keyway dimensions Keyway metric key dimensions standard keyways keys bores shaft hub depth iso diameter engineering table edge width. Temporarily out of stock. Woodruff Keys. 5020 2. Our Online Calculator streamlines this process and provides a detailed final result immediately. As you may know, people. Surface Roughness Conversion Chart Tables- Engineers Edge. This is an undersized clearance. Standard Metric Keys & Keyways for Metric Bores with One Key • Couplings All Types (Page 1 of 2) Metric Key & Keyway Dimensions Per ISO/R773 – Js9 Width Tolerance Key & Keyway Dimensions – Millimeters Falk Coupling Hub Keyway Dimensions – Inches Shaft Diameter “D” Key Size Nominal Keyway Width Hub “W”. Nearly every shaft diameter has a corresponding standard keyway width and depth – this calculator helps you find it. 062 0. Its theoreticai value is equai to JZGX 3) The width b, is a function of the miiied depth t,. This key stock is stepped to match repaired keyways in shafts or gears. 002 -0. Keys and keyways secure the hub and shaft to prevent relative movement between a power transmitting shaft and an attached component. 7530 3. Straight-sided splines for cylindrical shafts with internal centering — Dimensions, tolerances and verification. 4 Coupling Interchange Chart Gear Couplings QUICK FLEX® with black insert high-speed split cover Part # Torque Nm Max Bore mm Part # Torque Nm Max Bore mm 101 1,140 44 QF25 1,407 50 101-1/4 1,756 47 QF50 2,992 60ISO 2768-1 stands for the general tolerances for linear and angular dimensions without individual tolerance indications, ISO 2768-1 indicates the linear dimensions and angular dimensions such as external sizes, internal sizes, step sizes, diameters, radii, distances, external radii, and chamfer heights for broken edges. Keyway Js9 Tolerance Chart Pdf Getting the books Keyway Js9 Tolerance Chart Pdf now is not type of inspiring means. Standards such as BS 46, ANSI B17. Select your units as required. 4 LHUB LENGTH~W~ LHUB LENGTH&W*A PLAIN TAPER kwi ALTERNATE PLAIN TAPER Plain and Gib Head Taper Keys Have a 1/8" Taper in 12" Table 2 Key Dimensions and Tolerances NOMINA1 KEY Parallel Taper +HUB LENGTH '1 HB/2 APPROX . 2180 Corporate Lane, Suite 104 ~ Naperville, IL 60563 USA Phone (630) 596-9000 Fax (630) 596-9002 E-mail: [email protected]") 0. In stock and ready to ship. Fits and tolerance calculator for shaft and hole tolerance calculation according to ISO 286-1 and ANSI B4. 0005" tolerance and a not parallel to bore tolerance which creates a feeling of tighter fit. 1; Hardware Design. Check Details. broached internal keyway possibly has larger than . The upper surface must be located within two parallel planes at a tolerance value of 0. View Alternatives. If you don’t. 84 31. MSC#36883692 Mfr# H 24 MM. 020 0. keyways /keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keys. 5020 2. W = d/4[clarification needed] H = 2d/3[clarification needed] where. 050 R Typ 0. 1-1943 Standard. W = d/4[clarification needed] H = 2d/3[clarification needed] where. Standard External Metric Thread and Fastener Sizes M 0. BS 5686:1986, ISO 14-1982: Specification for straight-sided splines for cylindrical shafts: metric nominal dimensions, tolerances and gauging requirements. Detailed width tolerance information is best drawn from the manufacturer. The following Engineering calculator will show the plus and minus tolerance for the specific ISO 286 hole tolerance data. Metric bore tolerances conform to ISO 286-2 H7 for clearance fit and P7 for interference fit. and the tolerance is the difference between the limits. Tolerances and resultant fits SKF com. 414 Maximum 2. 020 0. 1 -1967 (2004) standards for metric and inch unit systems. 8mm 2. 5. Size Shaft Dia. H9/e9. 4mm 8mm 2mm 9mm 12mm 11mm 4mm 4mm 14mm 15mm DIN 7154, H7 Metric Bore and DIN 6885, Js9 Square Keyway Tolerances Page 1 of 4 Keyway Bore Diameter Size Bore Reference -0. 000 / +0. As with all functions of the Machinist's Calculator, linear values can be. keyway js9 tolerance chart web keyway js9 tolerance chart keyway tolerances mechanical engineering other topics may 12th 2018 for shafts 10 to 22mm diameter the keyway key depth tolerance is 0 1mm and it is 0 2mm for shafts 22 to lightPositional tolerances is used to locate features of size from datum planes such as a hole or keyway and used to locate features coaxial to a datum axis. used for cutting tools, material stock, gages, etc. 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. 6 or below. 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. 1 Class 2 standards for dimensions and tolerances. British Standard :BS 46 Part 1 : 1958 Keys and keyways and taper pins. ) It establishes symbols, rules, definitions, requirements, defaults, and recommended practices for stating and interpreting GD&T and related requirements for use on engineering drawings, models defined in digital data. I -I w*l-8-4 GIB HEAD TAPER Over I I. 4- Some internal Grade values must be rounded down to a precision of 3 decimal metric millimeter precision. The tolerance of a size is defined as the difference between the upper and lower limit dimensions of the part. We additionally allow variant types and in addition. The premise is; if you surrender 10% of the total product tolerance to the gages, you will pass 90% of your product tolerance 100% of the time, if the Go fits and the No-Go does not. The table, to the best of our knowledge, complies with:. 1-1967 or JIS B 1301-1996 specify sizes and tolerances of the keys and keyways. ANSI Standard Woodruff Key Size Table Chart ANSI B17.