- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.562 inches minimum
- Fastener Length
- 0.562 inches nominal
- Head Style
- Headless (setscrew)
- Point Style
- CUP
- Internal Drive Style
- Hexagon
- End Item Identification
- Ww/s:aircraft, viking S-3B; aircraft, C-2A (reprocured); aircraft, hawkeye E-2C; aircraft, tomcat F-14; helicopter, advance attack, AH-1W; consolidated targets; F4S aircraft; aircraft, C-18A, EC-18B; joint stars target radar system
- Nominal Thread Diameter
- 0.190 inches
- Width Across Flats
- 0.094 inches minimum and 0.095 inches maximum
- Thread Quantity per Inch
- 32
- Hardness Rating
- 45.0 rockwell C minimum overall and 53.0 rockwell C maximum overall
- Material
- Steel comp 4037 overall or steel comp 4137 overall or steel comp 4140 overall or steel comp 8630 overall or steel comp 8740 overall
- Material Document and Classification
- 66 fed std all material responses overall
- Surface Treatment
- Cadmium overall
- Thread Series Designator
- UNF
- Nondefinitive Spec/STD Data
- 1 type and 4 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.