- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.532 inches minimum
- Fastener Length
- 6.344 inches nominal
- Head Style
- Hexagon
- Head Height
- 0.172 inches minimum and 0.204 inches maximum
- Width Between Flats
- 0.490 inches minimum and 0.502 inches maximum
- Shank Unthreaded Hole Diameter
- 0.076 inches nominal first hole
- End Item Identification
- Spec item
- Nominal Thread Diameter
- 0.312 inches
- Grip Length
- 5.812 inches nominal
- Features Provided
- Finished head
- Thread Quantity per Inch
- 24
- 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
- 6.171 inches nominal first hole
- Material
- Steel comp 4037 or steel comp 4130 or steel comp 8630 or steel comp 8735 or steel comp 8740 or steel comp 4140 overall
- Material Document and Classification
- MIL-B-6812 mil spec all material responses overall
- Surface Treatment
- Cadmium and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416 TY2 CL3 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.