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Applicable to screw types as indicated by code symbols.
  • Type AB thread forming.
  • Type A thread forming, except for short lengths.
  • Types B and BP thread forming and Types BF and BT thread cutting.
Unit of Measure

Manufacturer

Manufacturer

N/A Industrial Fasteners Institute

Specifications

Product

N/A Tapping Screws

Unit of Measure

N/A English

Nominal Size or Basic Screw Dia.

N/A No. 7

Nominal Size or Basic Screw Dia. (Decimal)

N/A 0.1510 in
Applicable to Screw Types1 N/A 1
2
3

Max. Head Dia. (A)

N/A 0.296 in

Min. Head Dia. (A)

N/A 0.281 in

Max. Head Height (H)

N/A 0.089 in

Min. Head Height (H)

N/A 0.079 in

Max. Head Radius (R)

N/A 0.049 in

Max. Slot Width (J)

N/A 0.048 in

Min. Slot Width (J)

N/A 0.039 in

Max. Slot Depth (T)

N/A 0.054 in

Min. Slot Depth (T)

N/A 0.041 in

Codes and Standards

Codes and Standards

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