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Sales Systems Limited Products and Services > Fasteners Reference Guide > Bolts / Screws > Tapping Screws > Cross Recessed Pan Head Tapping Screws > Item # CRPHTSI02500XXX  
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Item # CRPHTSI02500XXX, Type I Cross Recessed Pan Head Tapping Screw, with 0.492" Head Dia.


Applicable to screw types as indicated by code symbols.
  • Type AB thread forming.
  • 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, 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.
1/4 in

Nominal Size or Basic Screw Dia. (Decimal)
0.2500 in

Applicable to Screw Types1

Max. Head Dia. (A)
0.492 in

Min. Head Dia. (A)
0.473 in

Max. Head Height (H)
0.175 in

Min. Head Height (H)
0.162 in

Min. Head Radius (R)
0.035 in

Ref. Recess Dia. (M)
0.274 in

Ref. Recess Depth (T)
0.148 in

Ref. Recess Width (N)
0.036 in

Driver Size
3

Max. Recess Penetration Gaging Depth
0.144 in

Min. Recess Penetration Gaging Depth
0.118 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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