- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.517 inches minimum and 0.537 inches maximum
- Fastener Length
- 0.625 inches nominal
- Head Style
- Double hexagon extended washer
- Head Height
- 0.388 inches nominal
- Width Between Flats
- 0.491 inches nominal
- Extended Washer Diameter
- 0.562 inches nominal
- Extended Washer Thickness
- 0.090 inches nominal
- Grip Diameter
- 0.343 inches minimum and 0.353 inches maximum
- Nominal Thread Diameter
- 0.375 inches
- Grip Length
- 0.088 inches minimum and 0.108 inches maximum
- Thread Quantity per Inch
- 24
- Material
- Iron alloy 660 overall
- Material Document and Classification
- AMS5731 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.