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Meeting ASTM A193 and ASME B16
They have a flat head with a 6-lobe drive and are designed for use in a variety of applications
allowing for secure fastening in thicker materials
while the serrated threads provide a secure grip in metal surfaces
These 10-24 x 1/2 Phillips pan split lock & narrow flat washer sems fully threaded zinc screws are designed for a variety of applications
5/16-18 x 1 1/2 Serrated Hex Flanged Washer Full Thread Screw Black Oxide 1/4-20-1 Meeting ASTM A193 and ASMEThe 5 16 18 x 1 1 2 Serrated Hex Flanged Washer Full Thread Screw Black Oxide is a versatile and durable fastener designed for a wide range of applications. It features a 5 16 18 thread size, a 1 1 2 inch length, and a black oxide finish for enhanced corrosion resistance. The serrated hex flange washer provides a secure grip and prevents the screw from loosening due to vibration or movement. The full thread design allows for maximum thread engagement
