- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.324 inches minimum and 0.364 inches maximum
- Fastener Length
- 1.459 inches minimum and 1.479 inches maximum
- Head Style
- Button
- Head Diameter
- 0.484 inches minimum and 0.516 inches maximum
- Head Height
- 0.109 inches minimum and 0.141 inches maximum
- Groove Diameter
- 0.191 inches minimum and 0.201 inches maximum
- Shank Unthreaded Hole Diameter
- 0.066 inches minimum and 0.076 inches maximum first hole
- Single Shear Strength
- 3680 pounds per square inch
- Internal Drive Style
- SLOT
- Nominal Thread Diameter
- 0.250 inches
- Thread Quantity per Inch
- 28
- Minimum Tensile Strength
- 125000 pounds per square inch
- Hardness Rating
- 26.0 rockwell C minimum and 32.0 rockwell C maximum overall
- Distance from Head Largest Bearing Surface to Shank Hole Center
- 1.297 inches minimum and 1.328 inches maximum first hole
- Material
- Steel comp 4140 or steel comp 8740 or steel comp 8630 or steel comp 8735 or steel comp 4130 or steel comp 4037 overall
- Surface Treatment
- Cadmium and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416, ty 2 cl 3 fed spec all treatment responses 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.