- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.460 inches minimum and 0.510 inches maximum
- Fastener Length
- 1.595 inches minimum and 1.625 inches maximum
- Head Style
- Double hexagon W/hole
- Head Height
- 0.300 inches nominal
- Width Between Flats
- 0.306 inches minimum and 0.315 inches maximum
- Extended Washer Diameter
- 0.433 inches nominal
- Extended Washer Thickness
- 0.069 inches nominal
- Grip Diameter
- 0.2485 inches minimum and 0.2495 inches maximum
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 1.115 inches minimum and 1.135 inches maximum
- Thread Quantity per Inch
- 28
- Minimum Tensile Strength
- 180000 pounds per square inch
- Hardness Rating
- 39.0 rockwell C minimum overall and 43.0 rockwell C maximum overall
- Material
- Steel comp 4140 overall or steel comp 8740 overall or steel comp 8735 overall or steel comp 6150 overall
- Surface Treatment
- Cadmium overall
- Thread Series Designator
- UNF
- Specification/Standard Data
- 80205-NAS624 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.