Print Back
Applicable to screw types as indicated by code symbols.
  • Type A thread forming, except for short lengths.
Unit of Measure

Manufacturer

Manufacturer

Industrial Fasteners Institute

Specifications

Product

Tapping Screws

Unit of Measure

English

Nominal Size or Basic Screw Dia.

No. 24

Nominal Size or Basic Screw Dia. (Decimal)

0.3720 in
Applicable to Screw Types1 2

Max. Head Dia. (A)

0.734 in

Min. Head Dia. (A)

0.709 in

Max. Head Height (H)

0.211 in

Min. Head Height (H)

0.193 in

Max. Head Radius (R)

0.143 in

Max. Slot Width (J)

0.094 in

Min. Slot Width (J)

0.081 in

Max. Slot Depth (T)

0.123 in

Min. Slot Depth (T)

0.100 in

Codes and Standards

Codes and Standards

Abstract of ASME B18.6.4 1998
  • 1 1 = Circle, 2 = Diamond, 3 = Triangle, 4 = Square