Radlok 5.7mm Stud — M6x1.0 Male

A genuine Amphenol-manufactured Radlok 5.7mm stud with an M6x1.0 male thread. Silver-plated copper construction delivers exceptional conductivity with strong oxidation resistance, maintaining a clean, low-resistance connection over the long term. Threads directly into any M6x1.0 tapped location — chassis grounding points, engine block threads, battery terminals, or factory body locations — and presents a 5.7mm Radlok-compatible stud ready for a press-lock high-current connection.

Radlok is an Amphenol-engineered connector system originally developed for EV battery systems, heavy equipment, and aerospace — applications where connection failure carries real consequences. At its core is RADSOK hyperbolic grid contact technology, a design that maximizes the surface area between pin and socket far beyond what a traditional ring terminal or bolt-on lug can achieve. The result is significantly lower contact resistance, meaning more of your electrical energy reaches its destination rather than being lost at the joint.

Traditional terminals are one of the most overlooked failure points on a built car. Rings stretch, nuts back off from vibration, and the resulting intermittent contact is one of the leading causes of no-start conditions that take hours to diagnose. This stud eliminates that variable. Press the Radlok cable end on, it locks in place, and the connection stays consistent — resistant to loosening, resistant to corrosion buildup, and reliable every time.

Installation Notice

Radlok adapter studs are machined from copper alloy. Copper is a soft material by nature — do not exceed recommended torque values. Male studs are particularly susceptible to thread stretch under over-torque and should be tightened with care. Over-tightening will deform the threads and can cause the stud to shear. No warranty claim will be accepted for studs damaged by over-torque.

Do not use installation lubricants, anti-seize, or grease of any kind on the threads. These products reduce friction and make it significantly easier to over-torque the stud, increasing the risk of thread damage or shear.

Female-threaded studs must be installed hand-tight and fully bottomed out on the bolt stud before any locking hardware is applied. Once seated, thread a jam nut down against the mating surface and tighten to lock the stud in place. Failure to bottom out the stud or use a jam nut can result in the stud backing out under load or vibration.

Electrical & Current Load Notice

These studs are intended for use within the current rating of the Amphenol Radlok connector system they are paired with. Some adapter configurations bridge connector systems of different sizes — it is the installer’s responsibility to ensure the final assembly is rated for the intended load. The limiting factor in any adapted connection is always the smallest rated component in the circuit. Exceeding the rating of any single component, using undersized conductors, or making improper terminations can result in resistance buildup, heat generation, connector failure, and risk of fire. Racing History Company assumes no liability for electrical failure, thermal damage, fire, or injury resulting from installation in systems that exceed component ratings or that do not meet applicable wiring standards.

Intended Use & Liability

These products are intended for motorsport and race vehicle applications only. Use in daily driven or road vehicles is not recommended. Continuous vibration loads encountered in regular street driving will accelerate fatigue in copper alloy components over time and can lead to connector loosening or stud failure. Racing History Company is not liable for damage, failure, or injury resulting from improper installation, incorrect torque application, misuse, use in daily driven vehicles, or any use outside the intended motorsport application of this product.