- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.514 inches minimum and 0.574 inches maximum
- Fastener Length
- 1.404 inches minimum and 1.434 inches maximum
- Head Style
- Hexagon
- Head Height
- 0.140 inches minimum and 0.172 inches maximum
- Width Between Flats
- 0.430 inches minimum and 0.439 inches maximum
- Hole Diameter
- 0.046 inches nominal
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 0.860 inches minimum and 0.890 inches maximum
- Hole Quantity
- 1
- Hole Type
- Drilled
- Features Provided
- Finished head
- Thread Quantity per Inch
- 28
- Minimum Tensile Strength
- 130000 pounds per square inch
- Hardness Rating
- 248.0 brinell standard minimum overall and 341.0 brinell standard maximum overall
- Minimum Yield Strength
- 85000 pounds per square inch
- Hole Configuration Style
- Hexagon flats
- Material
- Iron alloy 660 overall
- Material Document and Classification
- AMS5731 assn std single material response overall or AMS5732 assn std single material response overall
- Surface Treatment
- Passivate overall
- Surface Treatment Document and Classification
- MIL-S-5002 mil spec 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.