- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.370 inches maximum
- Fastener Length
- 1.230 inches minimum and 1.260 inches maximum
- Head Style
- Hexagon
- Head Height
- 0.125 inches minimum and 0.140 inches maximum
- Width Between Flats
- 0.429 inches minimum and 0.439 inches maximum
- Hole Diameter
- 0.076 inches minimum and 0.086 inches maximum
- Grip Diameter
- 0.2490 inches minimum and 0.2495 inches maximum
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 0.865 inches minimum and 0.885 inches maximum
- Hole Quantity
- 4
- Hole Type
- Drilled
- Thread Quantity per Inch
- 28
- Distance from Head Largest Bearing Surface to Shank Hole Center
- 1.085 inches minimum grip and 1.065 inches maximum grip
- Color
- Green threads
- Material
- Iron alloy 660 overall
- Material Document and Classification
- AMS5731, AMS5732, AMS5737 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.