- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.528 inches nominal
- Fastener Length
- 2.888 inches minimum and 2.918 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
- 0.514 inches minimum and 0.515 inches maximum
- End Item Identification
- KC-135 aircraft
- Nominal Thread Diameter
- 0.500 inches
- Grip Length
- 2.365 inches minimum and 2.385 inches maximum
- Thread Quantity per Inch
- 20
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell C minimum overall and 40.0 rockwell C maximum overall
- Material
- Steel comp E4340 overall or steel comp 4340 overall or steel comp 8740 overall
- Surface Treatment
- Cadmium overall and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416, ty 2, cl 2 fed spec all treatment responses overall
- Thread Series Designator
- UNJF
- Specification/Standard Data
- 80205-NAS6208 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.