Dear customers,
Currently, the printing and shipping of print documents (standards and publications) are delayed.
If available, you may also order the document in digital download format; it is usually available within a few minutes (or within one business day at the latest if manual review is required).
To convert an existing order, please email international@dinmedia.de, including your order number or customer number.
We apologize for the inconvenience and thank you for your patience.
Your DIN Media
Standard [WITHDRAWN]
Product information on this site:
Quick delivery via download or delivery service
All transactions are encrypted
This standard defines terms and parameters for cylindrical worm gears with the flank forms A, C, I, K and N. These terms and parameters apply to gear sets, worms, worm wheels, tooth thickness allowances and backlash. DIN 3975-2 applies to deviations. The national interests in its preparation were represented by Committee NA 060-34-14 AA "Schneckenverzahnungen" ("Worm Gears") at Technical Section Gear of DIN Standards Committee Mechanical Engineering (NAM). Representatives of the manufacturers and users of worm gears as well as of employers' liability insurance associations were involved in the preparation.
This document replaces DIN 3975-1:2002-07 .
This document has been replaced by: DIN 3975-1:2025-12 .