- Thread Class
- 3B
- Thread Direction
- Left-hand
- Nut Style
- Hexagon
- Nut Height
- 0.146 inches minimum and 0.166 inches maximum
- Drilled Hole Diameter
- 0.045 inches minimum and 0.050 inches maximum
- Hole Type and Quantity
- 3 drilled
- Width Across Flats
- 0.615 inches minimum and 0.627 inches maximum
- Thread Series
- UNJF
- Thread Quantity per Inch
- 20
- Nominal Thread Size
- 0.4375 inches
- Hole Configuration Style
- Configuration B
- Countersink Angle
- 109.0 degrees minimum both ends and 111.0 degrees maximum both ends
- Bearing Surface Type
- Chamfered
- Bearing Surface Finish
- 125.0 microinches
- Material
- Iron alloy 660 overall
- Material Document and Classification
- Ams 5525 assn std single material response overall or ams 5731 assn std single material response overall or ams 5732 assn std single material response overall
- Surface Treatment
- Passivate overall
- Surface Treatment Document and Classification
- QQ-P-35 fed spec single treatment response overall
- Specification/Standard Data
- 80205-NAS1423 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.