- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.438 inches minimum and 0.516 inches maximum
- Fastener Length
- 1.891 inches minimum and 1.938 inches maximum
- Head Style
- Hexagon
- Head Height
- 0.140 inches minimum and 0.172 inches maximum
- Width Between Flats
- 0.428 inches minimum and 0.440 inches maximum
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 1.422 inches minimum and 1.453 inches maximum
- Features Provided
- Finished head
- Thread Quantity per Inch
- 28
- Minimum Tensile Strength
- 62000 pounds per square inch
- Material
- Aluminum alloy overall
- Material Document and Classification
- QQ-A-200 fed spec single material response overall or QQ-A-225 fed spec single material response overall or QQ-A-430 fed spec single material response overall
- Surface Treatment
- Oxide film overall and anodize overall
- Surface Treatment Document and Classification
- MIL-C-5541 mil spec 1ST treatment response overall and MIL-A-8625 mil spec 2ND 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.