- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 1.479 inches minimum
- Fastener Length
- 6.614 inches minimum and 6.634 inches maximum
- Head Style
- Double hexagon extended washer
- Head Height
- 0.913 inches minimum and 0.933 inches maximum
- Width Between Flats
- 1.052 inches minimum and 1.072 inches maximum
- Extended Washer Diameter
- 1.615 inches minimum and 1.625 inches maximum
- Extended Washer Thickness
- 0.212 inches minimum and 0.232 inches maximum
- Grip Diameter
- 0.998 inches minimum and 0.999 inches maximum
- Nominal Thread Diameter
- 1.000 inches
- Grip Length
- 5.115 inches minimum and 5.135 inches maximum
- Thread Quantity per Inch
- 12
- Minimum Tensile Strength
- 180000 pounds per square inch
- Hardness Rating
- 39.0 rockwell C minimum overall and 43.0 rockwell C maximum overall
- Surface Finish
- 32.0 microinches bearing surface of head
- Surface Finish
- 32.0 microinches grip
- Material
- Steel comp 4140 overall or steel comp E4340 overall or steel comp 8740 overall or steel comp 6150 overall
- Surface Treatment
- Cadmium overall and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416, ty 2, cl 2 fed spec all treatment responses 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.