- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.375 inches minimum
- Fastener Length
- 0.438 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
- Hardness Rating
- 26.0 rockwell C minimum and 32.0 rockwell C maximum
- Screw Material
- Steel
- Screw Material Document and Classification
- QQ-S-689, C4-CANCELED fed spec single material response
- Screw Surface Treatment
- Cadmium and chromate zinc
- Screw Surface Treatment Document and Classification
- AN-P-61 mil std 1ST treatment response and MIL-P-6889, type 1-CANCELED 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.