- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.400 inches minimum and 0.450 inches maximum
- Fastener Length
- 0.593 inches minimum and 0.628 inches maximum
- Head Style
- Hexagon
- Head Height
- 0.125 inches minimum and 0.140 inches maximum
- Width Between Flats
- 0.430 inches minimum and 0.439 inches maximum
- Hole Diameter
- 0.051 inches nominal
- Grip Diameter
- 0.2485 inches minimum and 0.2495 inches maximum
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 0.178 inches minimum and 0.198 inches maximum
- Hole Quantity
- 3
- Hole Type
- Drilled
- Thread Quantity per Inch
- 28
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hole Configuration Style
- Hexagon corners
- Material
- Iron alloy 660 overall
- Material Document and Classification
- AMS5731 assn std single material response overall
- Surface Treatment
- Cadmium overall and chromate overall or chromium overall
- Surface Treatment Document and Classification
- QQ-P-416 ty 2 cl 2 fed spec 1ST treatment response overall or QQ-C-320 cl 2 fed spec 2ND treatment response overall
- Thread Series Designator
- UNJF
- Specification/Standard Data
- 80205-NAS6704 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.