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Sales Systems Limited Products and Services > Fasteners Reference Guide > Bolts / Screws > Tapping Screws > Cross Recessed Undercut Flat Countersunk Head Tapping Screws > Item # CRUFCHTSIA00990XXX  
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Item # CRUFCHTSIA00990XXX, Type IA Cross Recessed Undercut Flat Countersunk Head Tapping Screw, 0.0990" Nominal Dia.


  • When 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. 3

Nominal Size or Basic Screw Dia. (Decimal)
0.0990 in

Ref. Recess Dia. (M)
0.096 in

Ref. Recess Depth (T)
0.055 in

Ref. Recess Width (N)
0.029 in

Driver Size
1

Max. Recess Penetration Gaging Depth
0.053 in

Min. Recess Penetration Gaging Depth
0.037 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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