- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 1.000 inches nominal
- Fastener Length
- 1.750 inches nominal
- Head Style
- Flat chamfer
- Head Diameter
- 0.365 inches minimum and 0.375 inches maximum
- Head Height
- 0.244 inches minimum and 0.250 inches maximum
- Internal Drive Style
- Hexagon
- Nominal Thread Diameter
- 0.250 inches
- Width Across Flats
- 0.188 inches nominal
- Thread Quantity per Inch
- 28
- Chamfer Angle
- 30.0 degrees minimum and 45.0 degrees maximum
- Material
- Steel corrosion resisting overall
- Material Document and Classification
- NAS1351 national spec single material response overall
- Surface Treatment
- Passivate overall
- Surface Treatment Document and Classification
- AMS2700, method 1, type 6 or 7, class 1 assn std single treatment response overall
- Thread Series Designator
- UNRF
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.