NATO Strap
Single-pass nylon strap with a redundant retention system
What it is
A single-pass nylon strap that threads through a fixed bar and around the back of the case, providing redundancy if one spring bar fails (the watch stays on the wrist). The NATO strap originates from a 1973 British Ministry of Defence specification; the NATO Stock Number gives it the name. It threads under the case, which elevates the watch slightly higher off the wrist than a two-piece strap. Popular on vintage sport watches; the additional thickness under the case is either comfortable or irritating depending on the wearer.
History
The 1973 MoD spec G10 produced the original grey NATO strap for British military issue. Collectors adopted NATO straps for vintage Rolex sports models in the 1980s and 1990s because they allow watch rotation without changing spring bars: a single strap fits any watch at the right lug width, and the redundant retention system made them practical for active wear. James Bond's Submariner worn on a NATO strap in early films reinforced the association. Modern variants include nylon, polyester, and leather versions; two-piece "zulu" straps are mechanically similar but use larger hardware.
How it works
The strap passes through the gap between the case and both spring bars in a single continuous piece. The watch sits on top of the strap's first layer; a second layer of strap passes under the case. If one spring bar releases, the second layer retains the watch. The standard NATO strap has five hardware rings: two fixed bars at the case attachment points and three adjustment rings along the strap length. The strap buckle is a traditional pin-through-hole design.
In the catalog
Related
- Bracelet / Strap: The band that holds the watch on the wrist
- Clasp: The fastening mechanism on the bracelet or strap
- Lugs: The projections that hold the strap or bracelet
- Leather Strap: The traditional watch strap: calf, alligator, or exotic skin
