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Sales Systems Limited Products and Services > Fasteners Reference Guide > Bolts / Screws > Tapping Screws > Cross Recessed Pan Head Tapping Screws > Item # CRPHTSI02940XXX  
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Item # CRPHTSI02940XXX, Type I Cross Recessed Pan Head Tapping Screw, with 0.579" Head 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. 18

Nominal Size or Basic Screw Dia. (Decimal)
0.2940 in

Applicable to Screw Types1

Max. Head Dia. (A)
0.579 in

Min. Head Dia. (A)
0.558 in

Max. Head Height (H)
0.205 in

Min. Head Height (H)
0.191 in

Min. Head Radius (R)
0.035 in

Ref. Recess Dia. (M)
0.328 in

Ref. Recess Depth (T)
0.166 in

Ref. Recess Width (N)
0.056 in

Driver Size
4

Max. Recess Penetration Gaging Depth
0.158 in

Min. Recess Penetration Gaging Depth
0.134 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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