• Each end shall be square with the axis of each arm within 4 deg, and edges may be sharp or chamfered at the option of the manufacturer. The chamfer shall not exceed the values listed.
  • Any truncation or rounding of hexagon corners within the specified across-corner dimensions shall be evident on all corners.
  • Material (Steel Alloy). Hexagon keys and bits shall be fabricated from an alloy steel having two or more of the following alloying elements: chromium, nickel, molybdenum, or vanadium, in
  • more
Unit of Measure

Manufacturer

Manufacturer

Industrial Fasteners Institute

Specifications

Product

Socket Screws

Unit of Measure

English

Nominal Key or Bit and Socket Size

9/16 in

Nominal Key or Bit and Socket Size (Decimal)

0.562 in

Max. Hexagon Width Across Flats (W)

0.5625 in

Min. Hexagon Width Across Flats (W)

0.5600 in

Max. Hexagon Width Across Corners (Y)

0.6420 in

Min. Hexagon Width Across Corners (Y)

0.6356 in

Max. Length (B)

1.844 in

Min. Length (B)

1.656 in

Max. Short Arm Series Length (C)

5.844 in

Min. Short Arm Series Length (C)

5.656 in

Max. Long Arm Series Length (C)

9.094 in

Min. Long Arm Series Length (C)

8.906 in

Min. Radius of Bend (R)

0.562 in

Max. Chamfer (K)

0.053 in

Codes and Standards

Codes and Standards

ASME B18.3 2002
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