- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.420 inches minimum and 0.460 inches maximum
- Fastener Length
- 0.805 inches minimum and 0.825 inches maximum
- Head Style
- Double hexagon W/hole
- Head Height
- 0.255 inches minimum and 0.275 inches maximum
- Width Between Flats
- 0.240 inches minimum and 0.260 inches maximum
- Extended Washer Diameter
- 0.340 inches minimum and 0.360 inches maximum
- Extended Washer Thickness
- 0.045 inches minimum and 0.065 inches maximum
- Grip Diameter
- 0.1885 inches minimum and 0.1895 inches maximum
- Nominal Thread Diameter
- 0.190 inches
- Grip Length
- 0.365 inches minimum and 0.385 inches maximum
- Thread Quantity per Inch
- 32
- Minimum Tensile Strength
- 180000 pounds per square inch
- Hardness Rating
- 39.0 rockwell C minimum overall and 43.0 rockwell C maximum overall
- Material
- Steel comp 4140 overall or steel comp E4340 overall or steel comp 8740 overall or steel comp 6150 overall
- Surface Treatment
- Cadmium overall or chromate overall
- Surface Treatment Document and Classification
- QQ-P-416, type 2, class 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.