Dormakaba SN1 689 Sex Nut Kit,...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$22.97
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Dormakaba SN1 689 Sex Nut Kit, 1/4-20 Thread, Pack of 4, Door Closer Replacement Part

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Model: SN1 689 DORMA

In Stock (leaves warehouse same day if ordered before 3pm ET)

$22.97
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Dormakaba SN1 689 Sex Nut Kit, 1/4-20 Thread, Pack of 4, Door Closer Replacement Part

The Dormakaba SN1 689 Sex Nut Kit is a genuine replacement part designed for use with Dormakaba (DORMA) door closers. This kit includes a pack of 4 sex nuts with a 1/4-20 thread specification, providing a reliable and precise fit for compatible door closer hardware. Finished in 689 (Aluminum), these fasteners maintain a consistent appearance while delivering the secure mechanical connection required for commercial door closer applications.

Key Features

  • Thread Specification: 1/4-20 thread size ensures precise compatibility with Dormakaba DORMA door closer hardware for a secure and reliable mechanical connection.
  • Convenient Pack Quantity: Includes 4 sex nuts per kit, providing spares for multiple installations or future service needs.
  • Finish 689: Aluminum finish (689) coordinates with door closer finishes for a clean, professional appearance on commercial doors.
  • Genuine Replacement Part: Sourced as an authentic Dormakaba (DORMA) component, ensuring proper fit and function within compatible door closer assemblies.
  • Commercial Grade: Engineered for the demands of commercial door hardware applications where consistent, dependable fastener performance is essential.
  • Easy Serviceability: Designed to simplify field replacement and maintenance of Dormakaba door closer installations, minimizing downtime.

Technical Specifications

  • Department: Door Hardware
  • Product Category: Mechanical Locks
  • Product Group: Parts and Accessories
  • Subcategory: Parts and Accessories
  • Product Subgroup: Parts and Accessories
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: SN1 689 DORMA

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Dormakaba SN1?

Dormakaba parts and accessories are engineered to exact specifications, ensuring proper fit and long-term performance within compatible door closer assemblies. The SN1 689 Sex Nut Kit reflects Dormakaba's commitment to providing reliable, commercial-grade replacement components that maintain the integrity of installed door hardware systems across demanding applications.

Manufacturer Resources

Product Specs

Department:
Door Hardware
Product Category:
Mechanical Locks
Product Group:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Door Closer Parts
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
SN1 689 DORMA
Features:
Dorma Door Closer Parts & Accessories

Dormakaba SN1 689 DORMA – Frequently Asked Questions

1) What is the Dormakaba SN1 sex nut kit used for on a door closer?
Sex nuts are the female half of a through-bolt fastener set. On a door closer installation they go on the pull side of the door and receive the machine screws driven from the closer side, clamping the closer body or the arm shoe through the door leaf instead of relying on screws biting into the door alone. The SN1 kit is a genuine Dormakaba (DORMA) door closer part and ships four nuts per kit.
2) What thread size are the Dormakaba SN1 sex nuts?
1/4-20, which is the thread the Dormakaba DORMA closer mounting screws use. If the screws you are matching are a different thread, these will not thread up, so check the screw you are replacing against 1/4-20 before ordering.
3) Will the SN1 sex nut kit work with a non-Dormakaba closer?
The SN1 is sold as a Dormakaba (DORMA) replacement component for compatible Dormakaba door closer assemblies. The 1/4-20 thread is a common commercial closer fastener size, but fit on another manufacturer's closer depends on that closer's screw thread and barrel length, and neither is something the SN1 kit is specified against. For a like-for-like replacement on a DORMA closer, this is the correct part.
4) What finish is the SN1 689 sex nut kit, and will it match my closer?
689 aluminum. That is the same painted aluminum finish most commercial DORMA closers ship in, so the exposed nut heads on the pull side blend with the closer body rather than standing out as bare steel.
5) How many sex nuts do I need per closer, and is a four pack enough?
A typical closer body through-bolts with four screws, so one kit of four covers a single closer body. If you are also through-bolting the arm shoe at the frame or doing a run of doors, order a kit per opening plus spares. The four-per-kit count is fixed; there is one SKU, SN1 689 DORMA.
6) Do the SN1 sex nuts come with the mating screws?
No. The kit is four sex nuts only. You supply or reuse the 1/4-20 machine screws that drive into them, which normally come with the closer or are already in the door from the existing installation.
7) Are the Dormakaba SN1 sex nuts rated for commercial door traffic?
They are catalogued as a commercial-grade component, built for commercial door closer service in offices, schools, healthcare, retail, warehouses, multi-tenant residential and government buildings. Through-bolting with sex nuts is the standard approach on high-traffic and hollow-core or mineral-core doors, where screws alone strip out over time.
How fast can I get the Dormakaba SN1 689 DORMA delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Dormakaba SN1 689 DORMA come with a warranty?
Absolutely. The Dormakaba SN1 689 DORMA is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Dormakaba SN1 689 DORMA?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Dormakaba SN1 689 DORMA from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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