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Sales Systems Limited Products and Services > Fasteners Reference Guide > Bolts / Screws > Tapping Screws > Cross Recessed Flat Countersunk Head Tapping Screws > Item # CRFCHTSI05000XXX  
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Item # CRFCHTSI05000XXX, Type I Cross Recessed Flat Countersunk Head Tapping Screw, 0.5000" Nominal Dia.


  • Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.
  • Head dimensions not shown are the same as those of slotted heads
  • Not practical to gage sizes No. 0 and No. 1.
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.
1/2 in

Nominal Size or Basic Screw Dia. (Decimal)
0.5000 in

Ref. Recess Dia. (M)
0.418 in

Ref. Recess Depth (T)
0.265 in

Ref. Recess Width (N)
0.069 in

Driver Size
4

Max. Recess Penetration Gaging Depth
0.256 in

Min. Recess Penetration Gaging Depth
0.234 in


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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