Item # item-2835, Type IA Cross Recess Dimensions for Flat Countersunk Trim Head Tapping Screw, with 0.262" 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

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 1/4 in
Nominal Size or Basic Screw Dia. (Decimal)	N/A 0.2500 in
Ref. Recess Dia. (M)	N/A 0.262 in
Ref. Recess Depth (T)	N/A 0.149 in
Ref. Recess Width (N)	N/A 0.056 in
Driver Size	N/A 3
Max. Recess Penetration Gaging Depth	N/A 0.136 in
Min. Recess Penetration Gaging Depth	N/A 0.118 in

Abstract of ASME B18.6.4 1998

Manufacturer