- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.719 inches minimum and 0.765 inches maximum
- Fastener Length
- 0.875 inches nominal
- Head Style
- Double hexagon extended washer
- Head Height
- 0.303 inches nominal
- Width Between Flats
- 0.3125 inches nominal
- Extended Washer Diameter
- 0.458 inches nominal
- Extended Washer Thickness
- 0.080 inches nominal
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 0.079 inches minimum and 0.125 inches maximum
- Thread Quantity per Inch
- 28
- Hardness Rating
- 32.0 rockwell C minimum overall and 38.0 rockwell C maximum overall
- Material
- Steel corrosion resisting overall
- Material Document and Classification
- AMS5616 assn std single material 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.