- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.758 inches minimum and 0.778 inches maximum
- Fastener Length
- 3.403 inches minimum and 3.423 inches maximum
- Head Style
- Double hexagon extended washer
- Head Height
- 0.494 inches minimum and 0.514 inches maximum
- Width Between Flats
- 0.547 inches minimum and 0.562 inches maximum
- Extended Washer Diameter
- 0.818 inches minimum and 0.828 inches maximum
- Extended Washer Thickness
- 0.123 inches nominal
- Grip Diameter
- 0.4985 inches minimum and 0.4995 inches maximum
- Nominal Thread Diameter
- 0.500 inches
- Grip Length
- 2.740 inches minimum and 2.760 inches maximum
- Thread Quantity per Inch
- 20
- Minimum Tensile Strength
- 180000 pounds per square inch
- Material
- Steel comp 4140 overall or steel comp 4340 overall or steel comp 6150 overall
- Surface Treatment
- Cadmium overall
- Surface Treatment Document and Classification
- QQ-P-416, ty 11, cl 2 mil std single treatment response overall
- Thread Series Designator
- UNJF
- Specification/Standard Data
- 96906-MS21250-08042 government standard
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.