Unit of Measure

Manufacturer

Manufacturer

N/A Industrial Fasteners Institute

Specifications

Product

N/A Socket Screws

Unit of Measure

N/A English

Nominal Size or Basic Shoulder Diameter

N/A 3/8 in

Nominal Size or Basic Shoulder Diameter (Decimal)

N/A 0.3750 in

Max. Shoulder Diameter (D)

N/A 0.3730 in

Min. Shoulder Diameter (D)

N/A 0.371 in

Max. Head Diameter (A)

N/A 0.562 in

Min. Head Diameter (A)

N/A 0.543 in

Max. Head Height (H)

N/A 0.250 in

Min. Head Height (H)

N/A 0.240 in

Max. Chamfer or Radius (C)

N/A 0.031 in

Nom. Hexagon Socket Size (J)

N/A 3/16 in

Nom. Hexagon Socket Size Decimal (J)

N/A 0.188 in

Min. Key Engagement (T)

N/A 0.141 in

Max. Fillet Transition Diameter (M)

N/A 0.413 in

Min. Head Fillet Radius (R)

N/A 0.015 in

Min. Shoulder Neck Diameter (K)

N/A 0.352 in

Max. Shoulder Neck Width (F)

N/A 0.093 in

Nominal Thread Size or Basic Thread Diameter (D1)

N/A 5/16 in

Nominal Thread Size or Basic Thread Diameter Decimal (D1)

N/A 0.3125 in

Threads Per Inch

N/A 18

Max. Thread Neck Diameter (G)

N/A 0.249 in

Min. Thread Neck Diameter (G)

N/A 0.237 in

Max. Thread Neck Width (I)

N/A 0.111 in

Max. Thread Neck Fillet (N)

N/A 0.031 in

Min. Thread Neck Fillet (N)

N/A 0.0250 in

Basic Thread Length (E)

N/A 0.500 in

Max. Chamfer or Radius (P)

N/A 0.010 in

Codes and Standards

Codes and Standards

N/A ASME B18.3 2002
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