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Sales Systems Limited Products and Services > Fasteners Reference Guide > Bolts / Screws > Tapping Screws > Cross Recessed Undercut Oval Countersunk Head Tapping Screws > Item # CRUOCHTSI01640XXX  
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Item # CRUOCHTSI01640XXX, Type I Cross Recessed Undercut Oval Countersunk Head Tapping Screw, with 0.186" Recess 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.
No. 8

Nominal Size or Basic Screw Dia. (Decimal)
0.1640 in

Applicable to Screw Types1

Ref. Recess Dia. (M)
0.186 in

Ref. Recess Depth (T)
0.107 in

Ref. Recess Width (N)
0.031 in

Driver Size
2

Max. Recess Penetration Gaging Depth
0.108 in

Min. Recess Penetration Gaging Depth
0.084 in
1 1 = Circle, 3 = Triangle, 4 = Square


Codes and Standards

Codes and Standards
Abstract of ASME B18.6.4 1998


 DOWNLOADS 

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


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