- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.345-0.395 in
- Fastener Length
- 1.043-1.073 in
- Head Style
- Dished hexagon
- Head Height
- 0.125-0.140 in
- Width Between Flats
- 0.430-0.439 in
- Grip Diameter
- 0.2485-0.2495 in
- Nominal Thread Diameter
- 0.250 in
- Grip Length
- 0.678-0.698 in
- Thread Quantity per Inch
- 28
- Min Tensile Strength
- 160,000 PSI
- Surface Finish
- 32.0 microinches (bearing surface, grip, threads)
- Material
- Iron alloy 660 overall
- Material Spec
- AMS 5731 or AMS 5737
- Surface Treatment
- Cadmium overall and chromate overall per QQ-P-416, type 2, class 2
- Thread Series
- UNJF
- Specification
- NAS6304
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.