- Thread Class
- 3B
- Thread Direction
- Right-hand
- Locking Feature
- Prevailing torque all metal design
- Washer Outside Diameter
- 0.860 inches maximum
- Counterbore Diameter
- 0.546 inches minimum and 0.551 inches maximum nut
- Overall Height
- 0.430 inches maximum
- Nut Style
- Flat with turned up edge
- Nut Counterbore Depth
- 0.087 inches minimum and 0.097 inches maximum nut
- Width Across Flats
- 0.553 inches minimum and 0.564 inches maximum
- Temp Rating
- 450.0 deg fahrenheit maximum
- Thread Series
- UNJF
- Thread Quantity per Inch
- 20
- Hardness Rating
- 39.0 rockwell C minimum and 48.0 rockwell C maximum
- Nominal Thread Size
- 0.500 inches
- Special Features
- Rockwell C scale 40 min and rockwell C scale 45 max washer
- Material
- Steel comp 4140 or steel comp 4340 or steel comp 8740 nut
- Material
- Steel washer
- Material Document and Classification
- MIL-S-5626 mil spec 1ST material response or MIL-S-5000 mil spec 2ND material response or MIL-S-6049 mil spec 3RD material response nut
- Surface Treatment
- Cadmium and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416, ty 2, cl 2 fed spec all treatment responses overall
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.