Union Butterfield Self-Locking Taps

Union Butterfield taps provide holding power that lasts

Dormer Pramet 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 Union Butterfield 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° 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 Union Butterfield’s self-locking thread form eliminates thread stripping that is typical when clamping load is concentrated on fewer threads. Clamp load forces with the Union Butterfield self-locking thread design are spread evenly across all threads as compared to a conventional 60° thread form that puts clamping force only on the first few threads with the other threads receiving limited or not contact at all.

Ideal for transportation, medical or industrial use, the Union Butterfield Self-Locking taps will deliver holding power that lasts.

Request more details at www.dormerpramet.com, calling our self-locking tap specialists at 800-639-1776 or visit booth W-2464 at IMTS 2016.

About Dormer Pramet:

Dormer Pramet is a manufacturer of solid and indexable drilling, milling, threading and turning tools for the general engineering sector. Market-leading brands include Precision Twist Drill (PTD), Union Butterfield, Master, Dormer and Pramet. With best-in-class training, support and logistics services, Dormer Pramet has become the reliable one-stop-shop for general purpose and multi-application cutting tools. Visit us at www.dormerpramet.com.

Miriam Metcalfe

Marketing Manager

Dormer Pramet

2511 Technology Drive

Suite 113/114

Elgin, IL  60124


Office: +1 847-783-5713

Mobile: +1 630-488-6091

Fax: +1 847-783-5760


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