Portland Bolt Expands with Acquisition of Bennett Bolt Works
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Countersunk Dimensions

Click table to show drawing
Bolt DiameterDFHJS
Body DiameterHead DiameterHead HeightSlot WidthSlot Depth
MaxMax Edge SharpMin Edge SharpAbsolute Min RoundedMaxMinMaxMinMaxMin
1⁄20.5150.9350.9050.8450.2690.2330.1060.0910.1030.068
5⁄80.6421.1691.1321.0660.3360.2920.1130.1160.1370.091
3⁄40.7681.4021.3571.2850.4030.3490.1490.1310.1710.115
7⁄80.8951.6371.5841.5110.4700.4080.1670.1470.2060.138
11.0221.8691.8101.7350.5370.4660.1880.1660.2400.162
11⁄81.1492.1042.0371.9620.6040.5250.1960.1780.2570.173
11⁄41.2772.3372.2622.1870.6710.5820.2110.1930.2910.197
13⁄81.4042.5712.4892.4140.7380.6410.2260.2080.3260.220
11⁄21.5312.8042.7152.6400.8050.6980.2580.2400.3600.244

Dimensions per ASME B18.5 1990 (R 1998)

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