- Thread Series
- UNF
- Thread Diameter
- 0.312 inches (5/16-24)
- Threads Per Inch
- 24
- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.469 inches minimum
- Fastener Length
- 2.156 inches nominal
- Grip Length
- 1.688 inches nominal
- Grip Diameter
- 0.3110-0.3120 inches
- Material
- Alloy Steel (4140, E4340, 6150, 8735, or 8740)
- Surface Treatment
- Cadmium and Chromate (QQ-P-416, Type 2, Class 2)
- Hardness
- 36.0-40.0 Rockwell C
- Tensile Strength (Min)
- 160,000 PSI
- Head Style
- C3 Dished Hexagon
- Head Height
- 0.456 inches nominal
- Width Between Flats
- 0.492-0.502 inches
- Shank Feature
- Drilled (D suffix)
Catalogue data is compiled from public DLA/FLIS sources and is provided for
identification. Availability, condition and certification are confirmed on
quotation. OmniSynk Distribution Services is a stocking distributor.