- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.413 inches minimum and 0.463 inches maximum
- Fastener Length
- 1.361 inches minimum and 1.391 inches maximum
- Head Style
- Dished hexagon
- Head Height
- 0.156 inches minimum and 0.171 inches maximum
- Width Between Flats
- 0.492 inches minimum and 0.502 inches maximum
- Shoulder Diameter
- 0.3266 inches minimum and 0.3276 inches maximum first shoulder
- Shoulder Length
- 0.928 inches minimum and 0.948 inches maximum first shoulder
- Nominal Thread Diameter
- 0.312 inches
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell C minimum and 40.0 rockwell C maximum overall
- Shoulder Shape
- Round first shoulder
- Material
- Steel comp E4340 or steel comp 8740 overall
- Material Document and Classification
- MIL-S-5000 mil spec 1ST material response or MIL-S-6049 mil spec 2ND material response or ams 6322 assn std 2ND material response overall
- Surface Treatment
- Cadmium and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416 ty 2 class 2 fed spec single treatment response overall
- Thread Series Designator
- UNJF
- Specification/Standard Data
- 80205-NAS6205 professional/industrial association standard
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.