- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.669 inches minimum and 0.820 inches maximum
- Fastener Length
- 1.615 inches minimum and 1.635 inches maximum
- Head Style
- Flat chamfer
- Head Diameter
- 0.428 inches minimum and 0.448 inches maximum
- Head Height
- 0.250 inches minimum and 0.270 inches maximum
- Hole Diameter
- 0.070 inches nominal
- Internal Drive Style
- Hexagon
- Nominal Thread Diameter
- 0.250 inches
- Width Across Flats
- 0.219 inches minimum and 0.221 inches maximum
- Hole Quantity
- 6
- Hole Type
- Drilled
- Thread Quantity per Inch
- 28
- Hardness Rating
- 32.0 rockwell C minimum overall and 36.0 rockwell C maximum overall
- Hole Configuration Style
- Round longitudinal hole
- Surface Finish
- 32.0 microinches threads
- Surface Finish
- 63.0 microinches bearing surface of head
- Surface Finish
- 63.0 microinches grip
- Material
- Steel comp 8740 overall
- Material Document and Classification
- Ams 6322 assn std single material response overall
- Surface Treatment
- Cadmium overall
- Surface Treatment Document and Classification
- Ams 2400 assn std single treatment response 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.