- Thread Class
- 2A
- Thread Direction
- Right-hand
- Thread Length
- 0.438 inches maximum
- Fastener Length
- 0.407 inches minimum and 0.438 inches maximum
- Head Style
- Hexagon
- Head Height
- 0.150 inches minimum and 0.163 inches maximum
- Width Between Flats
- 0.428 inches minimum and 0.438 inches maximum
- Nominal Thread Diameter
- 0.250 inches
- Thread Quantity per Inch
- 20
- Minimum Tensile Strength
- 80000 pounds per square inch
- Hardness Rating
- 80.0 rockwell B minimum overall
- Minimum Yield Strength
- 30000 pounds per square inch
- Surface Finish
- 63.0 microinches threads
- Material
- Steel comp 301 or steel comp 302 or steel comp 302B or steel comp 303 or steel comp 303SE or steel comp 304 or steel comp 304L or steel comp 305 or steel comp 308 or steel comp 309 or steel comp 309S or steel comp 310 or steel comp 310S or steel comp 314 or steel comp 316 or steel comp 316L or steel comp 317 or steel comp 321 or steel comp 347 or steel comp 348 or steel comp 384 or steel comp 385 overall
- Material Document and Classification
- 66 fed std all material responses overall
- Surface Treatment
- Passivate overall
- Surface Treatment Document and Classification
- QQ-P-35 fed spec single treatment response overall
- Thread Series Designator
- UNC
- Nondefinitive Spec/STD Data
- 2 type and 10P style
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.