- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.787 inches minimum
- Fastener Length
- 3.188 inches nominal
- Head Style
- Bevel-conical
- Head Diameter
- 0.818 inches minimum and 0.828 inches maximum
- Head Height
- 0.500 inches nominal
- Internal Drive Style
- Hexagon
- Nominal Thread Diameter
- 0.500 inches
- Width Across Flats
- 0.3755 inches minimum and 0.3785 inches maximum
- Thread Quantity per Inch
- 20
- Hardness Rating
- 34.0 rockwell C minimum overall and 40.0 rockwell C maximum overall
- Material
- Steel comp 4340 overall or steel comp 4140 overall or steel comp 8740 overall or steel comp 8735 overall
- Surface Treatment
- Cadmium overall and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416 TY2, CL2 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.