- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.342 inches minimum and 0.392 inches maximum
- Fastener Length
- 5.188 inches minimum and 5.228 inches maximum
- Head Style
- Hexagon
- Head Height
- 0.109 inches minimum and 0.141 inches maximum
- Width Between Flats
- 0.365 inches minimum and 0.377 inches maximum
- Shoulder Diameter
- 0.186 inches minimum first shoulder and 0.189 inches maximum first shoulder
- Shoulder Length
- 4.865 inches minimum first shoulder and 4.885 inches maximum first shoulder
- Nominal Thread Diameter
- 0.138 inches
- Thread Quantity per Inch
- 32
- Hardness Rating
- 26.0 rockwell C minimum overall and 32.0 rockwell C maximum overall
- Shoulder Shape
- Round first shoulder
- Material
- Steel comp 4140 overall or steel comp 8740 overall or steel comp 8630 overall or steel comp 8735 overall or steel comp 4130 overall or steel comp 4037 overall
- Surface Treatment
- Cadmium overall and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416, ty 2 cl 2 fed spec single treatment response overall
- Thread Series Designator
- UNJC
- Specification/Standard Data
- 80205-NAS1297 professional/industrial association standard
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.