- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.316 inches minimum
- Fastener Length
- 0.754 inches nominal
- Head Style
- Flat chamfer
- Head Diameter
- 0.365 inches minimum and 0.375 inches maximum
- Head Height
- 0.133 inches minimum and 0.150 inches maximum
- Internal Drive Style
- Torque set
- Nominal Thread Diameter
- 0.250 inches
- Thread Quantity per Inch
- 28
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell C minimum and 40.0 rockwell C maximum
- Screw Material
- Steel
- Screw Surface Treatment
- Cadmium and chromate or zinc and chromate
- 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.