- Thread Class
- 2B
- Thread Direction
- Left-hand
- Counterbore Diameter
- 0.340 inches minimum nut and 0.360 inches maximum nut
- Nut Style
- Hexagon
- Nut Height
- 0.160 inches minimum and 0.170 inches maximum
- Width Across Flats
- 0.498 inches minimum and 0.502 inches maximum
- Thread Series
- UNF
- Thread Quantity per Inch
- 24
- Nominal Thread Size
- 0.312 inches
- Countersink Angle
- 110.0 degrees nominal nut
- Bearing Surface Type
- Chamfered
- Bearing Surface Finish
- 100.0 microinches
- Material
- Aluminum alloy 2024 overall
- Material Document and Classification
- QQ-A-267 fed spec single material response overall or QQ-A-268 fed spec single material response overall
- Surface Treatment
- Anodize overall
- Surface Treatment Document and Classification
- MIL-A-8625 mil spec single treatment response overall
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.