- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.800 inches minimum and 0.850 inches maximum
- Fastener Length
- 4.560 inches minimum and 4.590 inches maximum
- Head Style
- Double hexagon W/hole
- Head Height
- 0.547 inches minimum and 0.567 inches maximum
- Width Between Flats
- 0.619 inches minimum and 0.628 inches maximum
- Extended Washer Diameter
- 0.928 inches minimum and 0.938 inches maximum
- Extended Washer Thickness
- 0.123 inches minimum and 0.143 inches maximum
- Hole Diameter
- 0.055 inches nominal
- Grip Diameter
- 0.5605 inches minimum and 0.5615 inches maximum
- Nominal Thread Diameter
- 0.562 inches
- Grip Length
- 3.740 inches minimum and 3.760 inches maximum
- Hole Quantity
- 4
- Hole Type
- Drilled
- Thread Quantity per Inch
- 18
- Minimum Tensile Strength
- 180000 pounds per square inch
- Hardness Rating
- 39.0 rockwell C minimum and 43.0 rockwell C maximum overall
- Hole Configuration Style
- Double hexagon flats
- Part Name Assigned BY Controlling Agency
- Navy special project
- Material
- Steel comp 4140 or steel comp E4340 or steel comp 6150 or steel comp 8735 or steel comp 8740 overall
- Material Document and Classification
- MIL-S-5626 mil spec 1ST material response or MIL-S-5000 mil spec 2ND material response or MIL-S-8503 mil spec 3RD material response or MIL-S-6098 mil spec 4TH material response or MIL-S-6049 mil spec 5TH material response overall
- Surface Treatment
- Cadmium overall
- Surface Treatment Document and Classification
- Nas 672 assn std single treatment response overall
- Thread Series Designator
- UNJF
- Specification/Standard Data
- 80205-NAS629 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.