- Thread Class
- 2A
- Thread Direction
- Right-hand
- Thread Length
- 1.000 inches nominal
- Fastener Length
- 1.000 inches nominal
- Head Style
- Flat countersunk
- Head Diameter
- 0.257 inches minimum and 0.279 inches maximum
- Internal Drive Style
- Cross recess type 1
- Nominal Thread Diameter
- 0.138 inches
- Thread Quantity per Inch
- 32
- Minimum Tensile Strength
- 500 pounds per square inch
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Screw Material
- Copper alloy
- Screw Material Document and Classification
- QQ-W-321 fed spec single material response or QQ-B-626 fed spec single material response
- Thread Series Designator
- UNC
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.