Click to zoom in
Secure left hand threaded suspension adjustments with matching QA1 hardware.
These QA1 jam nuts provide a compact locking solution for compatible 3/4-16 left hand threaded components. Manufacturer part number JNL12S-6PK.
Key Features
- High carbon steel construction with a protective coating
- 3/4-16 left hand thread
- 1-1/8 inch hex and 7/16 inch width
- ANSI B18.2.2-1972 reference dimensions
- Six matching jam nuts per package
Fitment
| Application | Compatibility |
|---|---|
| Universal hardware | 3/4-16 left hand threaded rod ends and shock bodies |
Specifications
| Detail | Value |
|---|---|
| Manufacturer Part Number | JNL12S-6PK |
| Thread | 3/4-16 left hand |
| Hex Size | 1-1/8 in |
| Width | 7/16 in |
| Material | High carbon steel |
| Finish | Protective zinc coating |
| Quantity | 6 |
What's Included
- 6 steel jam nuts
About QA1
QA1 engineers suspension components and service hardware for street, performance, and industrial applications.
FAQ
What is the JNL12S-6PK?It is the exact manufacturer part number for this jam nuts.
Is this a vehicle specific part?No. It is universal hardware selected by thread size and direction.
Which thread direction does it use?It uses a left hand 3/4-16 thread.
What wrench size is required?The hex measures 1-1/8 inches.
How wide is each nut?Each nut is 7/16 inch wide.
What is the material?The nuts are made from high carbon steel with a protective coating.
How many nuts are included?The package contains six matching jam nuts.
Should anti-seize be used?Yes. QA1 recommends lubricating threaded shock components with anti-seize before adjustment.
Installation Instructions
- Confirm the mating component uses a 3/4-16 left hand thread.
- Apply anti-seize to clean threads.
- Thread each nut shoulder side up, make the adjustment, then tighten the nut against the mating component.
Prop 65 Warning
WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov
QA1
QA1 suspension parts are stocked at Black Ops Auto Works for American muscle cars and classic trucks. Shop coilover kits, shock absorbers, springs, handling kits, four link systems, sway bars, strut kits, rod ends, and suspension hardware for the Mustang, Camaro, Corvette, Challenger, Charger, and GM B-Body, F-Body, and G-Body platforms. Every product is filterable by year, make, model, trim, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 536 QA1 SKUs across coilovers, shocks, springs, and handling kit categories. What This Brand Covers QA1 is a suspension manufacturer known for adjustable coilover systems, shock absorbers, and complete handling kits built for muscle cars, classic trucks, drag cars, and pro touring builds. The lineup covers everything from single component shock replacement to full vehicle handling packages. Brand Focus QA1 concentrates on American muscle car and classic truck platforms, with deep coverage of GM, Ford, and ...
View QA1 Products