- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 1.000 inches minimum
- Fastener Length
- 1.484 inches minimum and 1.531 inches maximum
- Head Style
- Flat countersunk
- Head Diameter
- 0.720 inches minimum and 0.781 inches maximum
- Internal Drive Style
- Hexagon
- Nominal Thread Diameter
- 0.375 inches
- Width Across Flats
- 0.218 inches minimum and 0.220 inches maximum
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 70000 pounds per square inch
- Hardness Rating
- 80.0 rockwell B nominal overall
- Countersink Angle
- 80.0 degrees minimum and 84.0 degrees maximum
- Material
- Steel comp 303 overall or steel comp 304 overall
- Material Document and Classification
- 66 fed std single material response overall
- Surface Treatment
- Passivate overall
- Surface Treatment Document and Classification
- QQ-P-35 fed spec single treatment response overall
- Thread Series Designator
- UNF
- Nondefinitive Spec/STD Data
- 4 type
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.