- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.514 inches minimum and 0.574 inches maximum
- Fastener Length
- 1.279 inches minimum and 1.309 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
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 0.735 inches minimum and 0.765 inches maximum
- Features Provided
- Finished head
- Thread Quantity per Inch
- 28
- Minimum Tensile Strength
- 140000 pounds per square inch
- Hardness Rating
- 248.0 brinell standard minimum overall and 341.0 brinell standard maximum overall
- Material
- Iron alloy 660 overall
- Material Document and Classification
- AMS5732 assn std single material response overall or AMS5737 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
- Specification/Standard Data
- 80205-NAS1004 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.