- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.403 inches nominal
- Fastener Length
- 0.9505 inches minimum and 0.9805 inches maximum
- Head Style
- Flat countersunk
- Head Diameter
- 0.350 inches minimum and 0.399 inches maximum
- Grip Diameter
- 0.2641 inches minimum and 0.2651 inches maximum
- Internal Drive Style
- Offset cruciform (torque set)
- End Item Identification
- F-16
- Nominal Thread Diameter
- 0.2500 inches
- Grip Length
- 0.5625 inches nominal
- Thread Quantity per Inch
- 28
- Minimum Tensile Strength
- 220000 pounds per square inch
- Hardness Rating
- 46.0 rockwell C minimum and 50.0 rockwell C maximum overall
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Surface Finish
- 32.0 microinches threads
- Part Name Assigned BY Controlling Agency
- Bolt, 100 deg reduced head, torq-set or hex recess, 132 ksi min shear
- Material
- Steel comp H11 overall
- Material Document and Classification
- AMS-6487 assn std single material response overall
- Surface Treatment
- Cadmium overall
- Surface Treatment Document and Classification
- NAS672 national std single treatment response overall
- Thread Series Designator
- UNJF
- Specification/Standard Data
- 81755-C7985 manufacturers 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.