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  • Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.
This type of recess has a large center opening, tapered wings, and blunt bottom, with all edges relieved or rounded.
Unit of Measure

Manufacturer

Manufacturer

 N/A Industrial Fasteners Institute

Specifications

Product

 N/A Tapping Screws

Unit of Measure

 N/A English

Type

 N/A Type I

Nominal Size or Basic Screw Dia.

 N/A No. 12

Nominal Size or Basic Screw Dia. (Decimal)

 N/A 0.2160 in

Ref. Recess Dia. (M)

 N/A 0.198 in

Ref. Recess Depth (T)

 N/A 0.124 in

Ref. Recess Width (N)

 N/A 0.032 in

Driver Size

 N/A 2

Max. Recess Penetration Gaging Depth

 N/A 0.125 in

Min. Recess Penetration Gaging Depth

 N/A 0.102 in

Codes and Standards

Codes and Standards

 N/A Abstract of ASME B18.6.4 1998
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