- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.438 inches nominal
- Fastener Length
- 2.625 inches nominal
- 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
- Grip Diameter
- 0.311 inches minimum and 0.312 inches maximum
- Shank Unthreaded Hole Diameter
- 0.076 inches minimum first hole and 0.086 inches maximum first hole
- Nominal Thread Diameter
- 0.312 inches
- Grip Length
- 2.187 inches nominal
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 160000 pounds per square inch
- Distance from Head Largest Bearing Surface to Shank Hole Center
- 2.443 inches nominal first hole
- Material
- Steel comp 4340 overall or steel comp 8740 overall
- Material Document and Classification
- Ams 6415 assn std 1ST material response overall or ams 6322 assn std 2ND material response overall or MIL-S-6049 mil spec 2ND material response overall
- Surface Treatment
- Cadmium overall
- Surface Treatment Document and Classification
- QQ-P-416, tyii, CL2 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.