- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.516 inches minimum
- Fastener Length
- 0.891 inches nominal
- 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
- 0.375 inches nominal
- Features Provided
- Finished head
- Thread Quantity per Inch
- 28
- Minimum Tensile Strength
- 110000 pounds per square inch
- Minimum Yield Strength
- 90000 pounds per square inch
- Material
- Steel overall
- Surface Treatment
- Passivate overall
- Special Test Features
- Rupture strength at 1200 deg F shall not be less than 47000 psi in 100 hours
- 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.