- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.735 inches nominal
- Fastener Length
- 5.1575 inches minimum and 5.1875 inches maximum
- Head Style
- Dished hexagon
- Head Height
- 0.250 inches minimum and 0.265 inches maximum
- Width Between Flats
- 0.741 inches minimum and 0.752 inches maximum
- Grip Diameter
- 0.4985 inches minimum and 0.4995 inches maximum
- Shank Unthreaded Hole Diameter
- 0.106 inches minimum first hole and 0.116 inches maximum first hole
- Single Shear Strength
- 95000 pounds per square inch
- End Item Identification
- Boeing B757 aircraft
- Nominal Thread Diameter
- 0.500 inches
- Grip Length
- 4.4275 inches minimum and 4.4475 inches maximum
- Thread Quantity per Inch
- 20
- Minimum Tensile Strength
- 160000 pounds per square inch
- Distance from Head Largest Bearing Surface to Shank Hole Center
- 4.957 inches nominal first hole
- Color
- Green point
- Material
- Iron alloy 660 overall
- Material Document and Classification
- SAE-AMS5731 assn std single material response overall or SAE-AMS5732 assn std single material response overall or SAE-AMS5737 assn std single material response overall or SAE-AMS5853 assn std single material response overall
- Surface Treatment
- Cadmium 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.