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Unit of Measure

Manufacturer

Manufacturer

Industrial Fasteners Institute

Specifications

Product

Socket Screws

Unit of Measure

English

Nominal Size or Basic Shoulder Diameter

1/4 in

Nominal Size or Basic Shoulder Diameter (Decimal)

0.2500 in

Max. Shoulder Diameter (D)

0.2480 in

Min. Shoulder Diameter (D)

0.2460 in

Max. Head Diameter (A)

0.375 in

Min. Head Diameter (A)

0.357 in

Max. Head Height (H)

0.188 in

Min. Head Height (H)

0.177 in

Max. Chamfer or Radius (C)

0.020 in

Nom. Hexagon Socket Size (J)

1/8 in

Nom. Hexagon Socket Size Decimal (J)

0.125 in

Min. Key Engagement (T)

0.094 in

Max. Fillet Transition Diameter (M)

0.276 in

Min. Head Fillet Radius (R)

0.009 in

Min. Shoulder Neck Diameter (K)

0.227 in

Max. Shoulder Neck Width (F)

0.093 in

Nominal Thread Size or Basic Thread Diameter (D1)

10

Nominal Thread Size or Basic Thread Diameter Decimal (D1)

0.1900 in

Threads Per Inch

24

Max. Thread Neck Diameter (G)

0.142 in

Min. Thread Neck Diameter (G)

0.133 in

Max. Thread Neck Width (I)

0.083 in

Max. Thread Neck Fillet (N)

0.023 in

Min. Thread Neck Fillet (N)

0.017 in

Basic Thread Length (E)

0.375 in

Max. Chamfer or Radius (P)

0.010 in

Codes and Standards

Codes and Standards

ASME B18.3 2002