270 TECHNICAL INFORMATION 1. Shape and Dimensions of Hexagon Nuts Style (Parts Grade A) Reference 1. Nominal of thread in brackets should not be used unless it is absolutely necessary. 2. The shape of nuts, unless otherwise designated, shall be "double chamfered", and the "washer faced" option shall be as designated by the purchaser. Chamfering for the "washer faced" threads shall be based on the chamfered dimensions for "double chamfered". * With some of the hexagon bolts and hexagon nuts for M10 and M12 distributed at present, the opposite side S is based on JIS prior to the revision. Reference 1. The nominal diameter is dependent on the diameter of the pin hole. 2. d is a value for a spot somewhere between the end and the ℓ/2 spot. 3. The end may be pointed or flat. If a pointed end or a flat one is needed, it should be specified. 4. The length (ℓ) should be one enclosed by thick lines. The value in an enclosed area is a tolerance. If the required r-value is not given in the table, it should be specified by customers. 5. The head must not tilt excessively from the axial center. s e d m' m' m' m' Ødw Ødw Ødw Ødw Øda m m c 15°~ 30 15° ~ 30° C m m Øda d e s 90°~120° 90°~120° Washer Faced Washer Faced Reference Reference Double Chamfered Double Chamfered ℓ b c a a d 2. Shape and Dimensions of Hexagon Nuts Style (Parts Grade A) Unit: mm Unit: mm 3.Shape and Dimensions of Cotter Pins (Pointed End) (Flat End) Unit: mm Nominal of Thread d M2 M3 M4 M5 M6 M8 M10 M12 (M14) M16 Pitch P 0.4 0.5 0.7 0.8 1 1.25 1.5 1.75 2 2 c Max. 0.2 0.4 0.4 0.5 0.5 0.6 0.6 0.6 0.6 0.8 Min. 0.1 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.2 da Min.(Reference Dimension) 2 3 4 5 6 8 10 12 14 16 Max. 2.3 3.45 4.6 5.75 6.75 8.75 10.8 13 15.1 17.3 dw Min. 3.07 4.6 5.9 6.9 8.9 11.6 14.6 16.6 19.6 22.5 e Min. 4.32 6.01 7.66 8.79 11.05 14.38 17.77 20.03 23.35 26.75 m Max.(Reference Dimension) 1.6 2.4 3.2 4.7 5.2 6.8 8.4 10.8 12.8 14.8 Min. 1.35 2.15 2.9 4.4 4.9 6.44 8.04 10.37 12.1 14.1 m' Min. 1.08 1.72 2.32 3.52 3.92 5.15 6.43 8.3 9.68 11.28 s Max.(Reference Dimension) 4 5.5 7 8 101316182124 Min. 3.82 5.32 6.78 7.78 9.78 12.73 15.73 17.73 20.67 23.67 Nominal Diameter 0.6 0.8 1 1.2 1.6 2 2.5 3.2 4 5 6.3 8 10 13 16 20 d Reference Dimension 0.5 0.7 0.9 1 1.4 1.8 2.3 2.9 3.7 4.6 5.9 7.5 9.5 12.4 15.4 19.3 Tolerance 0 − 0.1 0 − 0.2 0 − 0.3 c Reference Dimension 1 1.4 1.8 2 2.8 3.6 4.6 5.8 7.4 9.2 11.8 15 19 24.8 30.8 38.6 Tolerance 0 − 0.1 0 − 0.2 0 − 0.3 0 − 0.4 0 − 0.6 0 − 0.7 0 − 0.9 0 − 1.2 0 − 1.5 0 − 1.9 0 − 2.4 0 − 3.1 0 − 3.8 0 − 4.8 b Approx. 2 2.4 3 3 3.2 4 5 6.4 8 10 12.6 16 20 26 32 40 a Approx. 1.6 1.6 1.6 2.5 2.5 2.5 2.5 3.2 4 4 4 4 6.3 6.3 6.3 6.3 Diameter of Applicable Bolts and Pins Bolts Over than − 2.5 3.5 4.5 5.5 7 9 11 14 20 27 39 56 80 120 170 or Less 2.5 3.5 4.5 5.5 7 9 11 14 20 27 39 56 80 120 170 − Clevis Pin Over than − 2 3 4 5 6 8 9 12 17 23 29 44 69 110 160 or Less 2 3 4 5 6 8 9 12 17 23 29 44 69 110 160 − Dia. of Pin Hole (Reference) 0.6 0.8 1 1.2 1.6 2 2.5 3.2 4 5 6.3 8 10 13 16 20 ℓ 4 ±0.5 5 ±0.5 6 ±0.5 8 ±0.5 ±0.8 10 ±0.8 12 ±0.8 14 ±0.8 16 18 ±1.2 20 22 ±1.2 25 28 32 ±1.2 36 40 ±2 45 ±2 50 56 63 71 ±2 80 90 100 112 ±2 125 140 160 ±2 180 200 224 250 280 Nominal of Thread d M5 M6 M8 M10 M12 (M14) M16 Pitch P 0.8 1 1.25 1.5 1.75 2 2 c Max. 0.5 0.5 0.6 0.6 0.6 0.6 0.8 Min. 0.15 0.15 0.15 0.15 0.15 0.15 0.2 da Min.(Reference Dimension) 5 6 8 10 12 14 16 Max. 5.75 6.75 8.75 10.8 13 15.1 17.3 dw Min. 6.9 8.9 11.6 14.6 16.6 19.6 22.5 e Min. 8.79 11.05 14.38 17.77 20.03 23.35 26.75 m Max.(Reference Dimension) 5.1 5.7 7.5 9.3 12 14.1 16.4 Min. 4.8 5.4 7.14 8.94 11.57 13.4 15.7 m' Min. 3.84 4.32 5.71 7.15 9.26 10.7 12.6 s Max.(Reference Dimension) 8 10 13 16 18 21 24 Min. 7.78 9.78 12.73 15.73 17.73 20.67 23.67 GeneralTechnical Information Hexagon Nuts/Cotter Pins
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