- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.350 inches minimum and 0.400 inches maximum
- Fastener Length
- 1.672 inches minimum and 1.702 inches maximum
- Head Style
- Flat countersunk
- Head Diameter
- 0.577 inches minimum and 0.635 inches maximum
- Grip Diameter
- 0.3110 inches minimum and 0.3120 inches maximum
- Nominal Thread Diameter
- 0.312 inches
- Grip Length
- 1.302 inches minimum and 1.322 inches maximum
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 160000 pounds per square inch
- Countersink Angle
- 100.0 degrees nominal
- Surface Finish
- 32.0 microinches overall
- Material
- Steel comp 4140 overall
- Material Document and Classification
- MIL-S-5626, cond 4340 mil spec single material response overall
- Surface Treatment
- Cadmium 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-NAS1155 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.