• Nominal Size. Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.
  • Screws. Drilled hexagon socket head cap screws shall conform to the respective dimensions and requirements set forth.
  • Number of Holes. Screws shall have 2, 4, or 6 holes drilled in the head as designated by the purchaser. For sizes 6 (0.138 in.) and smaller, the use of only 2 holes is recommended.
  • Holes. Hole size and location from the top of the head shall conform to
  • more
Unit of Measure

Manufacturer

Manufacturer

Industrial Fasteners Institute

Specifications

Product

Socket Screws

Unit of Measure

English

Nominal Size or Basic Screw Dia.

No. 8

Nominal Size or Basic Screw Dia. (Decimal)

0.1640 in

Drilled Hole Dia. Number (U)

56

Basic Drilled Hole Dia. (U)

0.0465 in

Max. Head to Center of Hole (V)

0.060 in

Min. Head to Center of Hole (V)

0.040 in

Basic Type I Drill Check Plug Dia.

0.035 in

Basic Type II Drill Check Plug Dia.

0.044 in

Hole Alignment Check Plug Dia.

0.030 in

Codes and Standards

Codes and Standards

ASME B18.3 2002
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