- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.429 inches minimum and 0.479 inches maximum
- Fastener Length
- 1.877 inches minimum and 1.907 inches maximum
- Head Style
- Dished hexagon
- Head Height
- 0.188 inches minimum and 0.203 inches maximum
- Width Between Flats
- 0.554 inches minimum and 0.564 inches maximum
- Hole Diameter
- 0.070 inches minimum and 0.080 inches maximum
- Grip Diameter
- 0.3735 inches minimum and 0.3745 inches maximum
- Nominal Thread Diameter
- 0.375 inches
- Grip Length
- 1.428 inches minimum and 1.448 inches maximum
- Hole Quantity
- 4
- Hole Type
- Drilled
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell C minimum overall and 40.0 rockwell C maximum overall
- Hole Configuration Style
- Hexagon flats
- Material
- Steel comp E4340 overall or steel comp 8740 overall
- Material Document and Classification
- MIL-S-5000 mil spec single material response overall or AMS6322 assn std single material response overall
- Surface Treatment
- Chromate overall
- Surface Treatment Document and Classification
- QQ-P-416 type 2, class 2 fed spec single 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.