- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.562 inches maximum
- Fastener Length
- 2.562 inches nominal
- Head Diameter
- 0.521 inches minimum and 0.531 inches maximum
- Head Height
- 0.312 inches nominal
- Internal Drive Style
- Hexagon
- Nominal Thread Diameter
- 0.312 inches
- Width Across Flats
- 0.219 inches minimum and 0.221 inches maximum
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell C minimum overall and 40.0 rockwell C maximum overall
- Material
- Steel overall
- Surface Treatment
- Cadmium overall
- Thread Series Designator
- UNF
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.