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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 # CROCHTSI03720XXX  
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Item # CROCHTSI03720XXX, Type I Cross Recessed Oval Countersunk Head Tapping Screw, with 0.430" Recess Dia.


Applicable to screw types as indicated by code symbols.
  • Type A thread forming, except for short lengths.

This type of recess has a large center opening, tapered 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 I

Nominal Size or Basic Screw Dia.
No. 24

Nominal Size or Basic Screw Dia. (Decimal)
0.3720 in

Applicable to Screw Types1

Ref. Recess Dia. (M)
0.430 in

Ref. Recess Depth (T)
0.270 in

Ref. Recess Width (N)
0.072 in

Driver Size
4

Max. Recess Penetration Gaging Depth
0.262 in

Min. Recess Penetration Gaging Depth
0.238 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
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