Jack Nut Engineered For Secure Threading
At Concept Fasteners, we have more than 35 years of experience working closely with manufacturers, fabricators, and assemblers. We manufacture a range of fastening and hardware products that include self-clinching fasteners, gas structs and security seals. We also deal in jack nuts that provide a fastening solution in areas where rear access is unavailable.
Our Jack Nuts, also called Molly Nut, create stable internal threads within thin sheet metal, hollow profiles, and closed sections. During installation, they expand behind the panel to form a secure anchor, allowing components to be installed, removed, and reinstalled without compromising the base material.
We manufacture and supply jack nuts using high-quality steel chosen for:
- Controlled expansion during installation
- Uniform thread formation
- Reliable holding behaviour
- Compatibility with various materials such as steel and aluminium
This material selection supports predictable performance at the point of setting and steady behaviour throughout ongoing use.
All our products, including the Jack Nut, meet the Australian standards and are certified with ISO 9001:2015.
Choose the Right Jack Nut From Our Diverse Collection
We supply jack nuts across a range of thread sizes. These include imperial options such as 8-32, 10-32, and 1/4-20. If you’re searching alongside metrics, our sizes include M4, M5, and M6.
Correct selection depends on how the jack nut will behave once installed.
Grip Range
Should match the combined thickness of the material so the fastener expands fully without spinning or collapsing.
Hole Size
Proper preparation allows the body to seat correctly and expand evenly during setting.
Load Requirement
Size and material choice must align with the forces applied during service.
Frequency of Removal
Assemblies requiring regular access benefit from options that retain thread integrity over repeated cycles.
Considering these points early helps minimise installation issues and supports dependable performance over the life of the assembly.
We assist with jack nut selection through clear specifications and practical guidance.