- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.469 inches minimum
- Fastener Length
- 3.469 inches nominal
- Head Style
- Hexagon
- Head Height
- 0.156 inches nominal
- Width Between Flats
- 0.497 inches nominal
- Grip Diameter
- 0.3110 inches minimum and 0.3120 inches maximum
- Shank Unthreaded Hole Diameter
- 0.076 inches nominal first hole
- Nominal Thread Diameter
- 0.312 inches
- Grip Length
- 3.000 inches nominal
- 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
- 3.288 inches minimum first hole
- Material
- Steel comp E4340 overall
- Material Document and Classification
- MIL-S-5000, cond C mil spec single material response overall
- Surface Treatment
- Cadmium overall
- Thread Series Designator
- UNF
- Specification/Standard Data
- 80205-NAS1303 thru NAS1320 professional/industrial association standard
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.