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Sales Systems Limited Products and Services > Fasteners Reference Guide > Bolts / Screws > Tapping Screws > Cross Recessed Oval Countersunk Head Tapping Screws > Item # CROCHTSIA03750XXX  
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Item # CROCHTSIA03750XXX, Type IA Cross Recessed Oval Countersunk Head Tapping Screw, with 0.404" Recess Dia.


Applicable to screw types as indicated by code symbols.
  • 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.

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




Manufacturer  · Specifications  · Codes and Standards

Manufacturer

Manufacturer
Industrial Fasteners Institute


Specifications

Product
Tapping Screws

Unit of Measure
English

Type
Type IA

Nominal Size or Basic Screw Dia.
3/8 in

Nominal Size or Basic Screw Dia. (Decimal)
0.3750 in

Applicable to Screw Types1

Ref. Recess Dia. (M)
0.404 in

Ref. Recess Depth (T)
0.253 in

Ref. Recess Width (N)
0.086 in

Driver Size
4

Max. Recess Penetration Gaging Depth
0.235 in

Min. Recess Penetration Gaging Depth
0.217 in
1 1 = Circle, 2 = Diamond, 3 = Triangle, 4 = Square


Codes and Standards

Codes and Standards
Abstract of ASME B18.6.4 1998


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Type Designations for Tapping Screws and Metallic Drive Screws
(PDF, 206KB)


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