- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.624 inches minimum and 0.685 inches maximum
- Fastener Length
- 2.078 inches minimum and 2.107 inches maximum
- Head Style
- Hexagon
- Head Height
- 0.234 inches minimum and 0.266 inches maximum
- Width Between Flats
- 0.615 inches minimum and 0.627 inches maximum
- Shank Unthreaded Hole Diameter
- 0.106 inches minimum first hole and 0.116 inches maximum first hole
- Nominal Thread Diameter
- 0.438 inches
- Grip Length
- 1.422 inches minimum and 1.454 inches maximum
- Features Provided
- Finished head
- Thread Quantity per Inch
- 20
- Minimum Tensile Strength
- 125000 pounds per square inch
- Hardness Rating
- 32.0 rockwell C minimum overall and 34.0 rockwell C maximum overall
- Distance from Head Largest Bearing Surface to Shank Hole Center
- 1.906 inches minimum first hole and 1.938 inches maximum first hole
- Material
- Steel comp 431 overall
- Material Document and Classification
- MIL-S-18732 mil spec single material response overall
- Surface Treatment
- Passivate overall
- Thread Series Designator
- UNF
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.