- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.303 inches minimum
- Fastener Length
- 0.375 inches nominal
- Head Style
- Flat countersunk
- Head Diameter
- 0.319 inches minimum and 0.332 inches maximum
- Locking Feature
- Strip threads
- Internal Drive Style
- Cross recess type 1
- Nominal Thread Diameter
- 0.164 inches
- Thread Quantity per Inch
- 32
- Minimum Tensile Strength
- 160000 pounds per square inch
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Material
- Steel overall
- Surface Treatment
- Cadmium overall and chromate overall
- Thread Series Designator
- UNC
- Specification/Standard Data
- 80205-NAS1189 professional/industrial association standard
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.