- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.412 inches minimum
- Fastener Length
- 1.412 inches nominal
- Head Style
- Double hexagon W/hole
- Head Height
- 0.300 inches nominal
- Width Between Flats
- 0.304 inches minimum and 0.313 inches maximum
- Extended Washer Diameter
- 0.433 inches nominal
- Extended Washer Thickness
- 0.069 inches nominal
- Hole Diameter
- 0.037 inches nominal
- Grip Diameter
- 0.2485 inches minimum and 0.2495 inches maximum
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 1.000 inches nominal
- Hole Quantity
- 4
- Hole Type
- Drilled
- Thread Quantity per Inch
- 28
- Minimum Tensile Strength
- 220000 pounds per square inch
- Hardness Rating
- 46.0 rockwell C minimum overall and 50.0 rockwell C maximum overall
- Hole Configuration Style
- Double hexagon longitudinal hole
- Material
- Steel comp H11 overall
- Material Document and Classification
- Ams 6485 assn std single material response overall or AMS6487 assn std single material response overall
- Surface Treatment
- Cadmium overall
- Surface Treatment Document and Classification
- Nas 672 assn std single treatment response overall
- Thread Series Designator
- UNJF
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.