• Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.
This type of recess consists of two intersecting slots with parallel sides converging to a slightly truncated apex at bottom of recess.
Unit of Measure

Manufacturer

Manufacturer

Industrial Fasteners Institute

Specifications

Product

Tapping Screws

Unit of Measure

English

Type

Type II

Nominal Size or Basic Screw Dia.

No. 14

Nominal Size or Basic Screw Dia. (Decimal)

0.2420 in

Ref. Recess Dia. (M)

0.297 in

Ref. Recess Depth (T)

0.172 in

Ref. Recess Width (N)

0.054 in

Driver Size

Point Same on all Drivers

Max. Recess Penetration Gaging Depth

0.162 in

Min. Recess Penetration Gaging Depth

0.145 in

Codes and Standards

Codes and Standards

Abstract of ASME B18.6.4 1998
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