- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 1.690 inches minimum and 1.750 inches maximum
- Fastener Length
- 2.440 inches minimum and 2.500 inches maximum
- Head Style
- Flat chamfer
- Head Diameter
- 0.921 inches minimum and 0.937 inches maximum
- Head Height
- 0.616 inches minimum and 0.625 inches maximum
- Internal Drive Style
- Hexagon
- Nominal Thread Diameter
- 0.625 inches
- Width Across Flats
- 0.500 inches minimum and 0.505 inches maximum
- Thread Quantity per Inch
- 11
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell C minimum overall and 43.0 rockwell C maximum overall
- Minimum Yield Strength
- 130000 pounds per square inch
- Material
- Steel overall
- Surface Treatment
- Cadmium overall and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416 ty 2 cl 3 fed spec single treatment response 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.