- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.877 inches minimum and 0.927 inches maximum
- Fastener Length
- 2.762 inches minimum and 2.792 inches maximum
- Head Style
- Dished hexagon
- Head Height
- 0.312 inches minimum and 0.327 inches maximum
- Width Between Flats
- 0.928 inches minimum and 0.940 inches maximum
- Grip Diameter
- 0.623 inches minimum and 0.624 inches maximum
- Nominal Thread Diameter
- 0.625 inches
- Grip Length
- 1.865 inches minimum and 1.885 inches maximum
- Thread Quantity per Inch
- 18
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell C minimum overall and 40.0 rockwell C maximum overall
- Surface Finish
- 32.0 microinches bearing surface of head
- Surface Finish
- 32.0 microinches grip
- Surface Finish
- 32.0 microinches threads
- Material
- Steel comp E4340 overall or steel comp 8740 overall
- Material Document and Classification
- MIL-S-5000 mil spec 1ST material response overall or MIL-S-6049 mil spec 2ND material response overall or ams 6322 assn std 2ND material response overall
- 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.