Self-Locking Taps Provide Holding Power That Lasts

Dormer Pramet (Elgin, IL) puts a lock on fastener costs with its Union Butterfield brand of self-locking taps. Utilizing specialized production equipment, this self-locking thread form can be produced on straight flute, spiral flute spiral point, roll form and even on the Union Butterfield line of high performance taps.

With improved holding power that lasts, the self-locking tap design eliminates time intensive disassembly and assembly procedures and costly fasteners, chemical bonds, nylon plugs or other devices to maintain tightness. In short, the company’s taps provide efficiency in operation and cost. A 30 deg wedge lock on the female thread creates a continuous spiral contact along the entire thread length for improved holding power versus standard thread forms.

Working with aluminum or other lightweight soft materials, the optimum load distribution provided by the self-locking thread form, eliminates thread stripping that is typical when clamping load is concentrated on fewer threads. Clamp load forces with the thread design are spread evenly across all threads as compared to a conventional 60 deg thread form that puts clamping force only on the first few threads, with the other threads receiving limited or no contact at all. Ideal for transportation, medical or industrial use, they can deliver holding power that lasts.

Dormer Pramet, 2511 Technology Drive Suite #113 / #114, Elgin, IL 60124, 847-783-5700, Fax: 847-783-5760, www.dormerpramet.com.