Print Back
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 5/16 in

Nominal Size or Basic Shoulder Diameter (Decimal)

N/A 0.312 in

Max. Shoulder Diameter (D)

N/A 0.3105 in

Min. Shoulder Diameter (D)

N/A 0.3085 in

Max. Head Diameter (A)

N/A 0.438 in

Min. Head Diameter (A)

N/A 0.419 in

Max. Head Height (H)

N/A 0.219 in

Min. Head Height (H)

N/A 0.209 in

Max. Chamfer or Radius (C)

N/A 0.026 in

Nom. Hexagon Socket Size (J)

N/A 5/32 in

Nom. Hexagon Socket Size Decimal (J)

N/A 0.156 in

Min. Key Engagement (T)

N/A 0.117 in

Max. Fillet Transition Diameter (M)

N/A 0.345 in

Min. Head Fillet Radius (R)

N/A 0.012 in

Min. Shoulder Neck Diameter (K)

N/A 0.289 in

Max. Shoulder Neck Width (F)

N/A 0.093 in

Nominal Thread Size or Basic Thread Diameter (D1)

N/A 1/4 in

Nominal Thread Size or Basic Thread Diameter Decimal (D1)

N/A 0.2500 in

Threads Per Inch

N/A 20

Max. Thread Neck Diameter (G)

N/A 0.193 in

Min. Thread Neck Diameter (G)

N/A 0.182 in

Max. Thread Neck Width (I)

N/A 0.100 in

Max. Thread Neck Fillet (N)

N/A 0.0280 in

Min. Thread Neck Fillet (N)

N/A 0.022 in

Basic Thread Length (E)

N/A 0.438 in

Max. Chamfer or Radius (P)

N/A 0.010 in

Codes and Standards

Codes and Standards

N/A ASME B18.3 2002