- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.245 inches minimum and 0.392 inches maximum
- Fastener Length
- 3.156 inches minimum and 3.188 inches maximum
- Head Style
- Button
- Head Diameter
- 0.609 inches minimum and 0.641 inches maximum
- Head Height
- 0.140 inches minimum and 0.172 inches maximum
- Groove Diameter
- 0.245 inches minimum and 0.255 inches maximum
- Shank Unthreaded Hole Diameter
- 0.076 inches minimum first hole and 0.086 inches maximum first hole
- Single Shear Strength
- 5750 pounds per square inch
- Internal Drive Style
- SLOT
- Nominal Thread Diameter
- 0.312 inches
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 125000 pounds per square inch
- Hardness Rating
- 26.0 rockwell C minimum overall and 32.0 rockwell C maximum overall
- Distance from Head Largest Bearing Surface to Shank Hole Center
- 2.984 inches minimum first hole and 3.016 inches maximum first hole
- Material
- Steel comp 4140 overall or steel comp 8740 overall or steel comp 8630 overall or steel comp 8735 overall or steel comp 4130 overall or steel comp 4037 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
- 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.