- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.620 inches nominal
- Fastener Length
- 0.620 inches nominal
- Head Style
- Flat countersunk
- Head Diameter
- 0.456 inches minimum and 0.508 inches maximum
- Internal Drive Style
- Tri-wing recess
- Nominal Thread Diameter
- 0.250 inches
- Thread Quantity per Inch
- 28
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Screw Material
- Iron alloy 660
- Screw Material Document and Classification
- Ams 5731 assn std single material response or ams 5737 assn std single material response
- Thread Series Designator
- UNJF
- Specification/Standard Data
- 80205-NAS5704 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.