- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.375 inches nominal
- Fastener Length
- 0.798 inches minimum and 0.828 inches maximum
- Head Style
- Flat countersunk
- Head Diameter
- 0.304 inches minimum and 0.314 inches maximum
- Grip Diameter
- 0.3106 inches minimum and 0.3112 inches maximum
- Shank Unthreaded Hole Diameter
- 0.076 inches minimum grip and 0.086 inches maximum grip
- Shank Unthreaded Hole Diameter
- 0.076 inches minimum overall and 0.086 inches maximum overall
- Internal Drive Style
- Cross recess type 1
- Nominal Thread Diameter
- 0.312 inches
- Grip Length
- 0.428 inches minimum and 0.448 inches maximum
- Thread Quantity per Inch
- A24
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Distance from Head Largest Bearing Surface to Shank Hole Center
- 0.994 inches nominal bearing surface of head
- Material
- Steel 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.