MACHINE SCREW SIZES

Machine Screw Size Calculators have been prepared to present dimensions of machine screw sizes according to ASME B18.6.3 "Machine Screws and Machine Screw Nuts" standard .

Some important notes from the ASME B18.6.3:2003:

Machine screws with slotted and recessed heads, flat countersunk head, oval countersunk head, undercut flat and oval countersunk heads, flat and oval countersunk trim heads, pan head, fillister head, truss head, binding head, hex head, hex washer head, round head and round washer head are covered.

The Standard also covers flat trim head, oval trim head and drilled fillister head machine screws and gives cross recess dimensions and gaging dimensions for all types of machine screw heads. Information on metric machine screws are given in  B18.6.7M standard.

CALCULATORS
Head Type Drive Type Calculator
Head Type Driver Type Combo Pan Head Machine Screw Dimensions
Head Type Driver Type Combo Truss Head Machine Screw Dimensions
Head Type Driver Type Phillips Fillister Head Machine Screw Dimensions
Head Type Driver Type Phillips Flat Countersunk Head Machine Screw Dimensions
Head Type Driver Type Phillips Oval Countersunk Head Machine Screw Dimensions
Head Type Driver Type Phillips Pan Head Machine Screw Dimensions
Head Type Driver Type Phillips Truss Head Machine Screw Dimensions
Head Type Driver Type Slotted Drilled Fillister Head Machine Screw Dimensions
Head Type Driver Type Slotted Fillister Head Machine Screw Dimensions
Head Type Driver Type Slotted Flat Countersunk Head Machine Screw Dimensions
Head Type Driver Type Slotted Oval Countersunk Head Machine Screw Dimensions
Head Type Driver Type Slotted Pan Head Machine Screw Dimensions
Head Type Driver Type Slotted Truss Head Machine Screw Dimensions