Item # CRPHTSIA05000XXX, Type IA Cross Recessed Pan Head Tapping Screw, with 0.987" Head Dia. On Sales Systems Ltd.

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Applicable to screw types as indicated by code symbols.

Types B and BP thread forming and Types BF and BT thread cutting.

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

Manufacturer

Manufacturer

N/A Industrial Fasteners Institute

Specifications

Product	N/A Tapping Screws
Unit of Measure	N/A English
Type	N/A Type IA
Nominal Size or Basic Screw Dia.	N/A 1/2 in
Nominal Size or Basic Screw Dia. (Decimal)	N/A 0.5000 in
Applicable to Screw Types¹	N/A 3
Max. Head Dia. (A)	N/A 0.987 in
Min. Head Dia. (A)	N/A 0.958 in
Max. Head Height (H)	N/A 0.348 in
Min. Head Height (H)	N/A 0.325 in
Min. Head Radius (R)	N/A 0.055 in
Ref. Recess Dia. (M)	N/A 0.414 in
Ref. Recess Depth (T)	N/A 0.264 in
Ref. Recess Width (N)	N/A 0.086 in
Driver Size	N/A 4
Max. Recess Penetration Gaging Depth	N/A 0.246 in
Min. Recess Penetration Gaging Depth	N/A 0.228 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

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