Tog-L-Loc is sheet metal joining or "clinching" made simple. Whether joining plain, painted or coated sheet metal parts with BTM's patented Tog-L-Loc sheet metal joining system there are no fasteners, sparks, or fumes. Fast, economical and consistent, the Tog-L-Loc joining technique is used worldwide to assemble automobile parts, appliances and more. From simple tooling to high speed automation, BTM provides solutions for your sheet metal assembly requirements.

Tog-L-Loc is a cold-forming clinch process which uses a special punch and die to form a strong interlocking joint within the metals themselves. The result of the process is a round, button shaped extrusion on the die side of the assembly, and a small cylindrical cavity on the punch side. The joint is comprised wholly of the sheet metals that were joined. No external fasteners, or welding is utilized in the process.

A typical Tog-L-Loc joint is created in under a second and features three basic steps as shown in this cross section diagram:

Step 1 Step 2 Step 3

Step 1 (Clamps): A punch side stripper clamps the metals to be joined.

Step 2 (Draws): Once the metals have been clamped by the stripper, a punch draws a section of the metals into a die.

Step 3 (Locks): A Tog-L-Loc die has moving blades which expand, allowing the metals to flow into a strong interlock. The end result is a vibration resistant, leakproof joint which was created without the use of external fasteners.

The Tog-L-Loc joining method is relied upon and trusted by industries around the world manufacturing a diverse range of products. From pre-painted microwave housings to delicate solar collectors, automotive hoods, heat shields, ductwork, garage doors, small electrical components, and even steel frame housing, Tog-L-Loc has become a trusted name in sheet metal joining. Contact BTM today to see how Tog-L-Loc can benefit your application.

Here are just a few examples of industries using Tog-L-Loc. Click an industry to see product examples.

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