Item # item-3071, Type IA Short Screw, with 0.162" Recess Dia. On Sales Systems Ltd.

This type of recess has a large center opening, wide straight wings, and blunt bottom, with all edges relieved or rounded.

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.
Type C thread forming and Types D, F, G, and T thread cutting.

Unit of Measure

Manufacturer | Specifications | Codes and Standards

Manufacturer

Industrial Fasteners Institute

Specifications

Product	N/A Tapping Screws
Unit of Measure	N/A English
Type	N/A Type IA Short Screws
Nominal Size or Basic Screw Dia.	N/A No. 8
Nominal Size or Basic Screw Dia. (Decimal)	N/A 0.1640 in
Head Size	N/A 5
Applicable to Screw Types¹	N/A 1 2 3 4
Ref. Recess Dia. (M)	N/A 0.152 in
Ref. Recess Depth ((T)	N/A 0.080 in
Ref. Recess Width (N)	N/A 0.041 in
Driver Size	N/A 2
Max. Recess Penetration Gaging Depth	N/A 0.074 in
Min. Recess Penetration Gaging Depth	N/A 0.056 in
Max. Protrusion Above Gaging Dia. (F)	N/A 0.075 in
Min. Protrusion Above Gaging Dia. (F)	N/A 0.053 in
Gaging Dia. (G)	N/A 0.196 in

Codes and Standards

Abstract of ASME B18.6.4 1998

¹ 1 = Circle, 2 = Diamond, 3 = Triangle, 4 = Square

Manufacturer

Manufacturer

Specifications

Product

Unit of Measure

Type

Nominal Size or Basic Screw Dia.

Nominal Size or Basic Screw Dia. (Decimal)

Head Size

Ref. Recess Dia. (M)

Ref. Recess Depth ((T)

Ref. Recess Width (N)

Driver Size

Max. Recess Penetration Gaging Depth

Min. Recess Penetration Gaging Depth

Max. Protrusion Above Gaging Dia. (F)

Min. Protrusion Above Gaging Dia. (F)

Gaging Dia. (G)

Codes and Standards

Codes and Standards