- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 1.479 inches minimum and 1.562 inches maximum
- Fastener Length
- 1.562 inches nominal
- Head Style
- Dished hexagon
- Head Height
- 0.156 inches minimum and 0.171 inches maximum
- Width Between Flats
- 0.429 inches minimum and 0.439 inches maximum
- Internal Drive Style
- Cross recess type 1
- Nominal Thread Diameter
- 0.312 inches
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 160000 pounds per square inch
- Screw Material
- Steel comp E4340 or steel comp 8740
- Screw Material Document and Classification
- MIL-S-5000 mil spec 1ST material response or MIL-S-6049 mil spec 2ND material response or AMS6322 assn std 2ND material response
- Screw Surface Treatment
- Cadmium and chromate
- Screw Surface Treatment Document and Classification
- QQ-P-416 TY2 CL2 fed spec single treatment response
- Bearing Surface of Head Surface Finish
- 63.0 microinches
- Shank Surface Finish
- 32.0 microinches
- Thread Surface Finish
- 32.0 microinches
- 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.