- Thread Class
- 3A
- Thread Direction
- Right-hand
- Fastener Length
- 1.323 inches minimum and 1.343 inches maximum
- Head Height
- 0.059 inches minimum and 0.069 inches maximum
- Width Between Flats
- 0.0947 inches minimum and 0.0967 inches maximum
- Shank Diameter
- 0.2791 inches minimum and 0.2797 inches maximum
- Shank Style
- Pin-rivet, straight, threaded
- Head Major Diameter
- 0.387 inches minimum and 0.412 inches maximum
- Lubrication
- Cetyl alcohol
- Grip Length
- 0.933 inches minimum and 0.943 inches maximum
- Thread Quantity per Inch
- 28
- Nominal Thread Size
- 0.250 inches
- Material
- Steel comp 4130 or steel comp 4140 or steel comp 8740 or steel comp E4340 overall
- Surface Treatment
- Cadmium and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416, ty 2 fed spec 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.