Dorma SN1 Sex Nuts for 1-3/4 in Doors
The Dorma SN1 pack is the 8900 Series sex-nut set for a 1-3/4 in door. Painted 8900 closers already include SN1 in the device price (PL38 printed p.187 / 8900 brochure). This listing is the spare pack Seclock stocks as SN1 689 DORMA.
When do I order SN1 as a spare?
Order this pack when the closer is already on the door and the original sex nuts are missing, or when you are moving an 8900 onto a 1-3/4 in door that was never through-bolted. Fire-labeled and sex-nut-required openings still need the correct pack for that door thickness -- this page is SN1 only.
Institutional Grade Features and Benefits
- Matches painted 8900: SN1 is the factory sex-nut pack included on every painted 8900.
- 1-3/4 in door: that is the standard commercial thickness the 8900 brochure lists for SN1.
- Finish 689: painted aluminum, same family as the 8900 covers and plates.
Applications
Through-bolting an 8900 (or the same dormakaba sex-nut geometry) on a 1-3/4 in hollow-metal or wood door. SN2 is a different length and is not this listing.
Which bracket or spacer is this?
This is not a plate. SN1 is the sex-nut pack. Drop plates and brackets stay on their own part pages (DP89, BP89, P89, PFT).
| Part | Use |
|---|---|
| SN1 | Sex nuts for 1-3/4 in door -- this listing |
| SN2 | Different length; not this page |
Technical Specifications
Facts from PL38 printed p.187 and the 8900 brochure fastener note. UL / Grade 1 apply to the 8900 closer body, not to the sex nuts.
Technical Details
| Feature | Details |
|---|---|
| Model Number | Dorma SN1 |
| Series | Dorma - 8900 Series |
| Door thickness | 1-3/4 in |
| Finish with BHMA code | 689 Painted Aluminum |
| Part Type | Sex nuts / through-bolt pack |
| Brand | Dorma |
| General - US Finishes | 689 - Spray Alumimun |
| Series | Dorma - 8900 Series, Dorma - 8900 Series |
| Closer Part Type | Brackets & Feet |
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