- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.501 inches nominal
- Fastener Length
- 1.048 inches minimum and 1.078 inches maximum
- Head Style
- Flat countersunk
- Head Diameter
- 0.578 inches minimum and 0.633 inches maximum
- Grip Diameter
- 0.3110 inches minimum and 0.3120 inches maximum
- Internal Drive Style
- Torque-set ribbed
- Nominal Thread Diameter
- 0.312 inches
- Grip Length
- 0.552 inches minimum and 0.572 inches maximum
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 160000 pounds per square inch
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Material
- Steel comp 4140 overall or steel comp E4340 overall or steel comp 8740 overall
- Material Document and Classification
- MIL-S-5626 mil spec 1ST material response overall or MIL-S-5000 mil spec 2ND material response overall or MIL-S-6049 mil spec 3RD 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-NAS1580 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.