- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.638 inches minimum and 0.678 inches maximum
- Fastener Length
- 1.250 inches nominal
- Head Style
- Double hexagon W/ hole
- Head Height
- 0.230 inches nominal
- Width Between Flats
- 0.2188 inches nominal
- Extended Washer Diameter
- 0.312 inches nominal
- Extended Washer Thickness
- 0.030 inches minimum
- Internal Drive Style
- W/O internal drive
- Nominal Thread Diameter
- 0.164 inches
- Thread Quantity per Inch
- 36
- Screw Material
- Iron alloy 660
- Screw Material Document and Classification
- AMS5731 assn std single material response
- Bearing Surface of Head Surface Finish
- 32.0 microinches
- Shank Surface Finish
- 32.0 microinches
- Thread Surface Finish
- 32.0 microinches
- 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.