- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 2.330 inches minimum and 2.407 inches maximum
- Fastener Length
- 2.390 inches minimum and 2.437 inches maximum
- Head Style
- Hexagon
- Head Height
- 0.219 inches nominal
- Width Between Flats
- 0.428 inches minimum and 0.440 inches maximum
- Hole Diameter
- 0.070 inches minimum and 0.080 inches maximum
- Nominal Thread Diameter
- 0.250 inches
- Hole Quantity
- 3
- Hole Type
- Drilled
- Thread Quantity per Inch
- 28
- Hardness Rating
- 36.0 rockwell C minimum overall and 40.0 rockwell C maximum overall
- Hole Configuration Style
- Hexagon corners
- Material
- Steel overall
- Surface Treatment
- Cadmium overall and chromate overall
- Thread Series Designator
- UNF
- Specification/Standard Data
- 80205-NAS564 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.