- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.265 inches minimum and 0.327 inches maximum
- Fastener Length
- 0.297 inches minimum and 0.327 inches maximum
- Head Style
- Flat chamfer
- Head Diameter
- 0.262 inches minimum and 0.270 inches maximum
- Head Height
- 0.159 inches minimum and 0.164 inches maximum
- Locking Feature
- Strip threads
- Internal Drive Style
- Hexagon
- Nominal Thread Diameter
- 0.164 inches
- Width Across Flats
- 0.140 inches minimum and 0.142 inches maximum
- Thread Quantity per Inch
- 32
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell C minimum overall and 45.0 rockwell C maximum overall
- Minimum Yield Strength
- 130000 pounds per square inch
- Material
- Steel overall
- Material Document and Classification
- 66 fed std single material response overall
- Surface Treatment
- Cadmium overall and chromate 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.