New SELF-LOCK™ Threading Technology Allows Even Distribution of Stress

Press Release Summary:

Emuge’s SELF-LOCK Threading Tools are suitable for aerospace, medical, communications, transportation industries. SELF-LOCK Threading is integrated in the thread with 30 degree ramp surface in the direction of stress. This threading provides constant and increased holding power under dynamic stress conditions. The unit’s ramp-shaped surface integrated into the thread profile provides locking effect. Threads can be formed using taps, cold forming taps or thread mills.

Original Press Release:

Emuge Thread Locking Technology is Ideal for Safety Critical Manufacturing Applications

SELF-LOCK™ Threading Tools Feature Proven Emuge Thread Design.

WEST BOYLSTON, MA U.S.A. (April 3, 2018) – Emuge Corp., a leading manufacturer of high performance taps, drills, end mills and other rotary tools, has announced its industry-leading thread making tool quality is available in a SELF-LOCK integrated locking system. Emuge SELF-LOCK threading tools offer a high quality alternative in thread locking for vital safety applications in aerospace, medical, communications, transportation industries and more. (

The Emuge thread locking feature is integrated in the internal thread, and has a modified profile with a 30 degree ramp surface in the direction of stress which provides the self-locking effect. In an ideal screw connection for high-stress situations, where there is a standard external thread in an Emuge SELF-LOCK internal thread, the internal thread yields a self-locking screw connection that can be used repeatedly. 

"The special profile of the SELF-LOCK thread allows an even distribution of stress over the entire thread length and therefore eliminates slippage," said Mr. Mark Hatch, Product Director at Emuge Corp. "We are pleased to offer such a safety critical threading solution which results in no stripping of threads and is cost-effective because no additional components are necessary."

Compared with standard threads, the Emuge SELF-LOCK internal thread shows constant, maximum holding power under dynamic stress. Functions remain in good operation even with repeated loosening and re-tightening of the thread connection. This locking effect is caused by the ramp-shaped surface integrated into the thread profile.

SELF-LOCK technology results in increased threading tool life for larger thread hole diameters and provides larger tolerances for thread hole diameters. Also, assembly is easy with no assembly errors possible such as forgetting the locking device. To gage SELF-LOCK threads, Emuge recommends using its two-piece gage system which corresponds to the usual combination of a go/ no-go gage.

Emuge SELF-LOCK Threading Tools work with standard external threads (screws) with tolerance class "medium". Internal threads can be produced with Emuge taps, cold forming taps or thread mills. To see the full range of SELF-LOCK Threading tools available, visit (

Emuge Corp. is a wholly owned subsidiary of the 1,500+ employee German company EMUGE-Werk Richard Glimpel GmbH & Co. KG (Lauf, Germany) that has been the product technology and performance leader in their field for nearly 100 years. The company manufactures an extensive line of taps, thread mills, drills, end mills, toolholders, clamping devices and other rotary cutting tools, over 30,000 items sold through distributors worldwide. Emuge also offers end-user technical support through a network of in-the-field engineers and in-house product specialists, all with extensive tooling and application experience.

Over 10,000 types of cutting tools and accessories are stocked in the company’s U.S. and Canadian Headquarters located in West Boylston, MA, USA. The 21,000 square foot state-of-the-art facility includes a new technology center with a machining and tooling demonstration showroom and classroom, tool reconditioning manufacturing, warehouse, sales, support and administrative offices. For more information on Emuge products, contact Emuge at 1800 Century Drive, West Boylston, MA 01583-2121, Tel. 800-323-3013, internet:

Editorial             Michael McCue                                     Emuge      Mark Hatch

Contact:            McCue & Associates LLC                     Contact:     Emuge Corp.

                          978-733-1353                                                         508-595-3600


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