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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 # CRFCHTSIA02940XXX  
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Item # CRFCHTSIA02940XXX, Type IA Cross Recessed Flat Countersunk Head Tapping Screw, 0.2940" 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, wide straight 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 IA

Nominal Size or Basic Screw Dia.
No. 18

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

Ref. Recess Dia. (M)
0.358 in

Ref. Recess Depth (T)
0.211 in

Ref. Recess Width (N)
0.086 in

Driver Size
4

Max. Recess Penetration Gaging Depth
0.193 in

Min. Recess Penetration Gaging Depth
0.175 in


Codes and Standards

Codes and Standards
Abstract of ASME B18.6.4 1998


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