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ASME B18.5 Round Head Fin Neck

asme-b18-5-round-head-fin-neck-bolts

Dimensions of ASME B18.5 Round Head Fin Neck Bolts

Nominal Size or Basic Bolt DiameterBody Diameter, EHead Diameter, AHead Height, HFin Thickness, MDistance Across Fins, OFin Depth, PMaximum Fillet Radius, R
MaxMinMaxMinMaxMinMaxMinMaxMinMaxMin
No. 100.190.1990.1820.4690.4380.1440.0940.0980.0780.3950.3750.0880.0760.031
1/40.250.260.2370.5940.5630.1450.1250.1140.0940.4580.4380.1040.0940.031
5/160.31250.3240.2980.7190.6880.1760.1560.1450.1250.5510.5310.1350.1250.031
3/80.3750.3880.360.8440.7820.2080.1880.1610.1410.6450.6250.1510.1410.031
7/160.43750.4520.4210.9690.9070.2390.2190.1920.1720.7390.7190.1820.1720.031
1/20.50.5150.4831.0941.0320.2700.2500.2080.1880.8330.8130.1980.1880.031
Notes :
  • Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.
  • The minimum radius is one half of the value shown.