- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.425 inches maximum
- Fastener Length
- 3.285 inches minimum and 3.315 inches maximum
- Head Style
- Hexagon
- Head Height
- 0.125 inches minimum and 0.135 inches maximum
- Width Between Flats
- 0.429 inches minimum and 0.439 inches maximum
- Hole Diameter
- 0.010 inches maximum
- Grip Diameter
- 0.2490 inches minimum and 0.2495 inches maximum
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 2.865 inches minimum and 2.885 inches maximum
- Hole Quantity
- 3
- Hole Type
- Drilled
- Thread Quantity per Inch
- 28
- Hole Configuration Style
- Hexagon corners
- Color
- Green threads
- Material
- Iron alloy 660 overall
- Material Document and Classification
- AMS5731, AMS5732 assn std 1ST material response overall or AMS5853 assn std 2ND material response overall
- Surface Treatment
- Cadmium overall
- Surface Treatment Document and Classification
- QQ-P-416, TYPE2, CLASS2 fed spec 1ST 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.