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  • Nominal Size. Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.
  • Length. The length of the screw shall be measured overall, parallel to the axis of the screw. The basic length dimension on the product shall be the nominal length expressed as a two-place decimal.
Unit of Measure

Manufacturer

Manufacturer

Industrial Fasteners Institute

Specifications

Product

Socket Screws

Unit of Measure

English

Type

Half Dog Point

Nominal Size or Basic Screw Diameter

5/8 in

Nominal Size or Basic Screw Diameter (Decimal)

0.6250 in

Nom. Hexagon Socket Size (J)

5/16 in

Nom. Hexagon Socket Size Decimal (J)

0.312 in

Nom. No. of Splines

6

Nom. Spline Socket Size Decimal (M)

0.372 in

Hex Socket TH Min. Key Engagement to Develop Functional Capability of Key (T)

0.312 in

Spline Socket Ts Min. Key Engagement to Develop Functional Capability of Key (T)

0.312 in

Max. Half Dog Point Diameter (P)

0.469 in

Min. Half Dog Point Diameter (P)

0.456 in

Max. Half Dog Point Length (Q)

0.164 in

Min. Half Dog Point Length (Q)

0.148 in

Half Dog Point Shortest Optimum Nominal Length to Which TH Applies (B)

0.88 in

Half Dog Point Shortest Optimum Nominal Length to Which Ts Applies (B1)

0.88 in

Codes and Standards

Codes and Standards

ASME B18.3 2002