- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.415 inches minimum and 0.435 inches maximum
- Fastener Length
- 0.790 inches minimum and 0.810 inches maximum
- Head Style
- Flat countersunk
- Head Diameter
- 0.497 inches minimum and 0.506 inches maximum
- Head Height
- 0.110 inches nominal
- Spline Major Diameter
- 0.219 inches minimum and 0.222 inches maximum
- Grip Diameter
- 0.2490 inches minimum and 0.2495 inches maximum
- Internal Drive Style
- TORX
- End Item Identification
- Aircraft, hornet F/A-18
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 0.365 inches minimum and 0.385 inches maximum
- Thread Quantity per Inch
- 28
- Minimum Tensile Strength
- 240 pounds per square inch
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Material
- Nickel alloy 718 overall
- Material Document and Classification
- INCONEL718 mfr ref 1ST material 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.