- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.606 inches minimum and 0.626 inches maximum
- Fastener Length
- 0.688 inches nominal
- Head Style
- Double hexagon W/ hole
- Head Height
- 0.250 inches nominal
- Width Between Flats
- 0.212 inches minimum and 0.220 inches maximum
- Extended Washer Diameter
- 0.312 inches nominal
- Extended Washer Thickness
- 0.030 inches minimum and 0.040 inches maximum
- Nominal Thread Diameter
- 0.164 inches
- Thread Quantity per Inch
- 36
- Hardness Rating
- 42.0 rockwell C minimum and 46.0 rockwell C maximum
- Screw Material
- Steel comp 601
- Screw Material Document and Classification
- Ams 6304 assn std single material response
- Screw Surface Treatment
- Nickel and cadmium and chromate
- Screw Surface Treatment Document and Classification
- Ams 2416 assn std all treatment responses
- 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.