Item # item-2837, Type IA Cross Recess Dimensions for Flat Countersunk Trim Head Tapping Screw, with 0.276" Recess Dia. On Sales Systems Ltd.

Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.

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

Unit of Measure

Manufacturer | Specifications | Codes and Standards

N/A Industrial Fasteners Institute

Product	N/A Tapping Screws
Unit of Measure	N/A English
Type	N/A Type IA
Nominal Size or Basic Screw Dia.	N/A 5/16 in
Nominal Size or Basic Screw Dia. (Decimal)	N/A 0.3125 in
Ref. Recess Dia. (M)	N/A 0.276 in
Ref. Recess Depth (T)	N/A 0.164 in
Ref. Recess Width (N)	N/A 0.057 in
Driver Size	N/A 3
Max. Recess Penetration Gaging Depth	N/A 0.151 in
Min. Recess Penetration Gaging Depth	N/A 0.133 in

N/A Abstract of ASME B18.6.4 1998

Manufacturer