- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.438 inches minimum
- Fastener Length
- 0.500 inches nominal
- Head Style
- Round extended washer
- Head Diameter
- 0.312 inches nominal
- Head Height
- 0.375 inches nominal
- Extended Washer Diameter
- 0.375 inches nominal
- Extended Washer Thickness
- 0.023 inches nominal
- Locking Feature
- Patch threads or strip threads
- Internal Drive Style
- Cross recess type ii
- 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 overall and 32.0 rockwell C maximum overall
- Material
- Steel overall
- Surface Treatment
- Cadmium overall
- 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.