- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.425 inches nominal
- Fastener Length
- 1.863 inches nominal
- Head Style
- Flat countersunk
- Head Diameter
- 0.456 inches minimum and 0.508 inches maximum
- Grip Diameter
- 0.249 inches nominal
- Internal Drive Style
- Cross recess type 1
- End Item Identification
- A-10 aircraft
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 1.438 inches nominal
- Thread Quantity per Inch
- 28
- Countersink Angle
- 100.0 degrees nominal
- Material
- Iron alloy 660 overall
- Thread Series Designator
- UNF
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.