- Thread Class
- 3A
- Thread Direction
- Right-hand
- Fastener Length
- 1.178 inches minimum and 1.198 inches maximum
- Head Height
- 0.068 inches minimum and 0.078 inches maximum
- Width Between Flats
- 0.127 inches minimum and 0.130 inches maximum
- Shank Diameter
- 0.311 inches minimum and 0.312 inches maximum
- Shank Style
- Pin-rivet, straight, threaded
- Head Major Diameter
- 0.475 inches minimum and 0.505 inches maximum
- Lubrication
- Cetyl alcohol
- Grip Length
- 0.683 inches minimum and 0.693 inches maximum
- Nominal Thread Size
- 0.312 inches
- Shear Strength
- 19160 double pounds per square inch
- Material
- Steel comp 431 overall
- Material Document and Classification
- MIL-S-18732 mil spec single material response overall
- Surface Treatment
- Passivate overall
- Surface Treatment Document and Classification
- 258, fscm 73197 mfr ref single treatment response overall
- Thread Series Designator
- UNJF
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.