- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.501 inches nominal
- Fastener Length
- 1.799 inches nominal
- Head Style
- Flat countersunk
- Head Diameter
- 0.578 inches minimum
- Grip Diameter
- 0.311 inches minimum and 0.312 inches maximum
- Internal Drive Style
- Offset cruciform (torque set)
- Nominal Thread Diameter
- 0.3125 inches
- Grip Length
- 1.438 inches nominal
- Thread Quantity per Inch
- 24
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Material
- Steel comp 4140 overall or steel comp 4340 overall or steel comp 8740 overall
- Surface Treatment
- Cadmium overall
- Surface Treatment Document and Classification
- QQ-P-416, TY2CL2 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.