- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.375 inches maximum
- Fastener Length
- 0.344 inches minimum and 0.375 inches maximum
- Head Style
- PAN
- Head Diameter
- 0.473 inches minimum and 0.492 inches maximum
- Head Height
- 0.162 inches minimum and 0.175 inches maximum
- Locking Feature
- Strip threads
- Internal Drive Style
- Cross recess type 1
- Nominal Thread Diameter
- 0.250 inches
- Thread Quantity per Inch
- 28
- Minimum Tensile Strength
- 140000 pounds per square inch
- Hardness Rating
- 248.0 brinell standard minimum overall and 321.0 brinell standard maximum overall
- Minimum Yield Strength
- 85000 pounds per square inch
- Material
- Iron alloy 660 overall
- Material Document and Classification
- Ams 5735 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.