- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.376 inches minimum and 0.451 inches maximum
- Fastener Length
- 1.829 inches minimum and 1.874 inches maximum
- Head Style
- Flat countersunk
- Head Diameter
- 0.287 inches minimum and 0.334 inches maximum
- Internal Drive Style
- Cross recess type 1
- Nominal Thread Diameter
- 0.164 inches
- Thread Quantity per Inch
- 32
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell C minimum and 40.0 rockwell C maximum
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Screw Material
- Steel comp 8740 or steel comp 8630 or steel comp 8735 or steel comp 4130
- Screw Surface Treatment
- Cadmium and chromate
- Screw Surface Treatment Document and Classification
- QQ-P-416, ty 2, cl 2 fed spec single treatment response
- Thread Series Designator
- UNJC
- Specification/Standard Data
- 80205-NAS517 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.