Unit of Measure
Items
Hexagon Socket Head Shoulder Screws

Hexagon Socket Head Shoulder Screw, 1/4" Nominal Dia.

Hexagon Socket Head Shoulder Screws

Hexagon Socket Head Shoulder Screw, 5/16" Nominal Dia.

Hexagon Socket Head Shoulder Screws

Hexagon Socket Head Shoulder Screw, 3/8" Nominal Dia.

Hexagon Socket Head Shoulder Screws

Hexagon Socket Head Shoulder Screw, 1/2" Nominal Dia.

Hexagon Socket Head Shoulder Screws

Hexagon Socket Head Shoulder Screw, 5/8" Nominal Dia.
Manufacturer N/A Industrial Fasteners Institute
Product N/A Socket Screws
Codes and Standards N/A ASME B18.3 2002
Unit of Measure N/A English
Nominal Size or Basic Shoulder Diameter N/A 1/4 in N/A 5/16 in N/A 3/8 in N/A 1/2 in N/A 5/8 in
Nominal Size or Basic Shoulder Diameter (Decimal) N/A 0.2500 in N/A 0.312 in N/A 0.3750 in N/A 0.5000 in N/A 0.6250 in
Max. Shoulder Diameter (D) N/A 0.2480 in N/A 0.3105 in N/A 0.3730 in N/A 0.4980 in N/A 0.6230 in
Min. Shoulder Diameter (D) N/A 0.2460 in N/A 0.3085 in N/A 0.371 in N/A 0.4960 in N/A 0.6210 in
Max. Head Diameter (A) N/A 0.375 in N/A 0.438 in N/A 0.562 in N/A 0.750 in N/A 0.875 in
Min. Head Diameter (A) N/A 0.357 in N/A 0.419 in N/A 0.543 in N/A 0.729 in N/A 0.853 in
Max. Head Height (H) N/A 0.188 in N/A 0.219 in N/A 0.250 in N/A 0.312 in N/A 0.375 in
Min. Head Height (H) N/A 0.177 in N/A 0.209 in N/A 0.240 in N/A 0.302 in N/A 0.365 in
Max. Chamfer or Radius (C) N/A 0.020 in N/A 0.026 in N/A 0.031 in N/A 0.040 in N/A 0.050 in
Nom. Hexagon Socket Size (J) N/A 1/8 in N/A 5/32 in N/A 3/16 in N/A 1/4 in N/A 5/16 in
Nom. Hexagon Socket Size Decimal (J) N/A 0.125 in N/A 0.156 in N/A 0.188 in N/A 0.250 in N/A 0.312 in
Min. Key Engagement (T) N/A 0.094 in N/A 0.117 in N/A 0.141 in N/A 0.188 in N/A 0.234 in
Max. Fillet Transition Diameter (M) N/A 0.276 in N/A 0.345 in N/A 0.413 in N/A 0.550 in N/A 0.687 in
Min. Head Fillet Radius (R) N/A 0.009 in N/A 0.012 in N/A 0.015 in N/A 0.020 in N/A 0.024 in
Min. Shoulder Neck Diameter (K) N/A 0.227 in N/A 0.289 in N/A 0.352 in N/A 0.477 in N/A 0.602 in
Max. Shoulder Neck Width (F) N/A 0.093 in
Nominal Thread Size or Basic Thread Diameter (D1) N/A 10 N/A 1/4 in N/A 5/16 in N/A 3/8 in N/A 1/2 in
Nominal Thread Size or Basic Thread Diameter Decimal (D1) N/A 0.1900 in N/A 0.2500 in N/A 0.3125 in N/A 0.3750 in N/A 0.5000 in
Threads Per Inch N/A 24 N/A 20 N/A 18 N/A 16 N/A 13
Max. Thread Neck Diameter (G) N/A 0.142 in N/A 0.193 in N/A 0.249 in N/A 0.304 in N/A 0.414 in
Min. Thread Neck Diameter (G) N/A 0.133 in N/A 0.182 in N/A 0.237 in N/A 0.291 in N/A 0.397 in
Max. Thread Neck Width (I) N/A 0.083 in N/A 0.100 in N/A 0.111 in N/A 0.125 in N/A 0.154 in
Max. Thread Neck Fillet (N) N/A 0.023 in N/A 0.0280 in N/A 0.031 in N/A 0.035 in N/A 0.042 in
Min. Thread Neck Fillet (N) N/A 0.017 in N/A 0.022 in N/A 0.0250 in N/A 0.029 in N/A 0.036 in
Basic Thread Length (E) N/A 0.375 in N/A 0.438 in N/A 0.500 in N/A 0.625 in N/A 0.750 in
Max. Chamfer or Radius (P) N/A 0.010 in N/A 0.010 in N/A 0.010 in N/A 0.010 in N/A 0.015 in
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