SIMMONDS safety nuts
(TDI reseller of the Simmonds brand)
SIMMONDS safety nuts have been manufactured in France at Saint Côme-en-Vairais since 1938. They were developed to improve the reliability of bolted assemblies in the aerospace sector. SIMMONDS provides its customers with total traceability (ISO 10204 3.1 certificates available for the entire range). Today, SIMMONDS products continue to be manufactured mainly for the following sectors
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| automotive | aeronautics | industrial |
NYLSTOP® BRAND
SIMMONDS is the owner of the NYLSTOP brand. This is a variant of the self-locking nut, characterized by the use of a " TECHNYL " nylon locking ring . This ring is carefully crimped into a prepared seat on the top of the nut. The precision of the crimping and the special characteristics of nylon give the NYLSTOP screw/nut assembly incomparable advantages:
NYLSTOP preserves the screw thread (steel or stainless steel) at temperatures ranging from -50°C to +120°C for non-metallic ring nuts.
NYLSTOP ensures constant braking torque
NYLSTOP is reusable, with a minimum of 5 assembly/disassembly operations with specified values
NYLSTOP has a zinc-nickel-gray protection which gives them a 720-hour salt spray test life
NYLSTOP andidentification: marking of resistance class and manufacturer from diameter 5 upwards
Declination of the NYLSTOP SIMMONDS range
① Hexagon nuts diameters M2.5 to M52 in classes 8 and 10, also available in stainless steel A2-70 and A4-80. Standard zinc nickel gray coating.
② Notched bearing nuts diameters M10 to M100
MHT NUTS
SIMMONDS also offers "MHT" nuts for applications up to 400°C, as well as the ESLOCK process for self-locking a thread by depositing a nylon pellet on part of it.
