- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.454 inches nominal
- Fastener Length
- 1.751 inches minimum and 1.781 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
- Grip Diameter
- 0.3735 inches minimum and 0.3745 inches maximum
- Nominal Thread Diameter
- 0.3750 inches
- Grip Length
- 1.302 inches minimum and 1.322 inches maximum
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell C minimum overall and 36.0 rockwell C maximum overall
- Material
- Steel comp 4340 overall or steel comp 8740 overall
- Material Document and Classification
- Ams 6322 assn std 1ST material response overall or MIL-S-5000 mil spec 2ND material response overall or MIL-S-6049 mil spec 2ND material response overall
- Surface Treatment
- Cadmium overall and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416 ty 2 cl 2 fed spec single treatment response overall
- Thread Series Designator
- UNJF
- Specification/Standard Data
- 80205-NAS6206 professional/industrial association specification
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.