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Hex Head Bolt Dimensions ASME B18.2.1

What is the dimensions of a hex head bolt?

If you have a question, concern or comment, feel free to contact us.


Body Diameter BasicBody Diameter MaxBody Diameter MinWidth Across Flats BasicWidth Across Flats MaxWidth Across Flats MinWidth Across Corners MaxWidth Across Corners MinHead Height BasicHead Height MaxHead Height MinRadius of Fillet MaxRadius of Fillet MinThread Length 6" and ShorterThread Length Over 6"
1/40.2600.2377/160.4380.4250.5050.48411/640.1880.1500.030.010.7501.000
5/160.3242.9801/20.5000.4840.5770.5527/320.2350.1950.030.010.8751.125
3/80.3880.3609/160.5620.5440.6500.6201/40.2680.2260.030.011.0001.250
7/160.4520.4215/80.6250.6030.7220.68719/640.3160.2720.030.011.1251.375
1/20.5150.4823/40.7500.7250.8660.82611/320.3640.3020.030.011.2501.500
5/80.6420.60515/160.9380.9061.0831.03327/640.4440.3780.060.021.5001.750
3/40.7680.7291-1/81.1251.0881.2991.2401/20.5240.4550.060.021.7502.000
7/80.8950.8521-5/161.3121.2691.5161.44737/640.6040.5310.060.022.0002.250
11.0220.9761-1/21.5001.4501.7321.65343/640.7000.5910.090.032.2502.500
1-1/81.1491.0981-11/161.6881.6311.9491.8593/40.7800.6580.090.032.5002.750
1-1/41.2771.2231-7/81.8751.8122.1652.06627/320.8760.7490.090.032.7503.000
1-3/81.4041.3452-1/162.0621.9942.3822.27329/320.9400.8100.090.033.0003.250
1-1/21.5311.4702-1/42.2502.1752.5982.48011.0360.9020.090.033.2503.500
1-3/41.7851.7162-5/82.6252.5383.0312.8931-5/321.1961.0540.120.043.7504.000
22.0391.96433.0002.9003.4643.3061-11/321.3881.1750.120.044.2504.500
2-1/42.3052.2143-3/83.3753.2623.8973.7191-1/21.5481.3270.190.064.7505.000
2-1/22.5592.4613-3/43.7503.6254.3304.1331-21/321.7081.4790.190.065.2505.500
2-3/42.8272.7114-1/84.1253.9884.7634.5461-13/161.8691.6320.190.065.7506.000
33.0812.9614-1/24.5004.3505.1964.95922.0601.8150.190.066.2506.500
3-1/43.3353.2104-7/84.8754.7125.6295.3722-3/162.2511.9360.190.066.7507.000
3-1/23.5893.4615-1/45.2505.0756.0625.7862-5/162.3802.0570.190.067.2507.500
3-3/43.8583.7265-5/85.6255.4376.4956.1982-1/22.5722.2410.190.067.7508.000
44.1113.97566.0005.8006.9286.6122-11/162.7642.4240.190.068.2508.500


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Are you a Fastener Distributor or Reseller?

Glover's Threaded Products Inc. is a bolt manufacturing company, hot forging hex, square and custom headed bolts from 1/2" thru 2-1/2" diameter.

R. E. Glover Ltd. sells only to end users. Distributors and resellers must contact GTP at 905-549-7678 or visit
www.gloverstp.com
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R. E. GLOVER LTD. 84 Mead Ave . Hamilton . ON . Canada . L8H 3T5
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