- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.652 inches minimum and 0.765 inches maximum
- Fastener Length
- 0.735 inches minimum and 0.765 inches maximum
- Head Style
- Flat chamfer
- Head Diameter
- 0.457 inches minimum and 0.468 inches maximum
- Head Height
- 0.306 inches minimum and 0.312 inches maximum
- Locking Feature
- Patch threads
- Internal Drive Style
- Hexagon
- Nominal Thread Diameter
- 0.312 inches
- Width Across Flats
- 0.250 inches minimum and 0.253 inches maximum
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 80000 pounds per square inch
- Hardness Rating
- 80.0 rockwell B minimum overall
- Minimum Yield Strength
- 30000 pounds per square inch
- Material
- Steel comp 302 overall or steel comp 304 overall or steel comp 316 overall or steel comp XM-7 overall or steel comp 384 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
- 6 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.