- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.406 inches minimum
- Fastener Length
- 1.000 inches nominal
- Head Style
- Round extended washer
- Head Diameter
- 0.312 inches nominal
- Head Height
- 0.082 inches minimum and 0.092 inches maximum
- Extended Washer Diameter
- 0.375 inches nominal
- Extended Washer Thickness
- 0.023 inches minimum and 0.028 inches maximum
- Internal Drive Style
- SLOT
- Nominal Thread Diameter
- 0.164 inches
- Thread Quantity per Inch
- 32
- Minimum Tensile Strength
- 125000 pounds per square inch
- Screw Material
- Steel
- Screw Material Document and Classification
- QQ-S-689 fed spec single material response
- Screw Surface Treatment
- Cadmium or zinc
- Screw Surface Treatment Document and Classification
- AN-P-61 mil spec 1ST treatment response or MIL-P-6889, TYPE1 mil spec 2ND treatment 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.