- Thread Class
- 2A
- Thread Direction
- Right-hand
- Thread Length
- 0.251 inches minimum and 0.301 inches maximum
- Fastener Length
- 0.511 inches minimum and 0.541 inches maximum
- Head Style
- Flat countersunk
- Head Diameter
- 0.231 inches minimum and 0.279 inches maximum
- Internal Drive Style
- Torque set
- Nominal Thread Diameter
- 0.138 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 E4340 or steel comp 4037
- Screw Material Document and Classification
- MIL-S-5000 mil spec 1ST material response or ams 6300 assn std 2ND material response
- Screw Surface Treatment
- Cadmium and chromate
- Screw Surface Treatment Document and Classification
- QQ-P-416 ty 2 cl 3 fed spec all treatment responses
- Thread Series Designator
- UNJC
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.