The QA1 steel jam nut has a 1-1/4-12 left hand thread with a 1-7/8in hex and a 11/16in width. It is made from high carbon steel with a protective coating and references ANSI B18.2.2-1972.
Specifications:
- Thread: 1-1/4-12
- Thread direction: left hand
- Hex size: 1-7/8in
- Width: 11/16in
- Material: high carbon steel with protective coating
- Part number: JNL16S
FAQ
What thread does the QA1 JNL16S jam nut use?
It uses a 1-1/4-12 left hand thread.
What are the hex and width dimensions?
The nut has a 1-7/8in hex and is 11/16in wide.
What is this jam nut made from?
It is made from high carbon steel with a protective coating and references ANSI B18.2.2-1972.

