- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.553 inches minimum and 0.603 inches maximum
- Fastener Length
- 3.750 inches minimum and 3.780 inches maximum
- Head Style
- Dished hexagon
- Head Height
- 0.188 inches minimum and 0.203 inches maximum
- Width Between Flats
- 0.553 inches minimum and 0.564 inches maximum
- Grip Diameter
- 0.3735 inches minimum and 0.3745 inches maximum
- Shank Unthreaded Hole Diameter
- 0.706 inches minimum first hole and 0.116 inches maximum first hole
- Nominal Thread Diameter
- 0.375 inches
- Grip Length
- 3.177 inches minimum and 3.197 inches maximum
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell C minimum overall and 40.0 rockwell C maximum overall
- Distance from Head Largest Bearing Surface to Shank Hole Center
- 3.568 inches nominal first hole
- Material
- Steel comp E4340 overall or steel comp 4340 overall or steel comp 8740 overall or steel comp 8735 overall or steel comp 6150 overall or steel comp 4140 overall
- Surface Treatment
- Cadmium overall and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416, TY2 CL2 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.