Bremick Metric Nylon Insert 6, M30

This is the Metric Nylon Insert Lock Nut - Grade 6 Zinc Yellow Finish.

Bremick nylon insert lock nuts (Nyloc) provide a prevailing-torque locking action that resists loosening under vibration, used where a standard hex nut cannot be relied upon to stay at torque without additional retention. This one is the Metric Grade 6 Yellow Finish.

Where this product is used

• Vibration-prone assemblies such as motors, pumps, conveyors and guards, where a plain nut can work loose
• Trailers, racks and mounts that see road or machine vibration
• Replacing worn locknuts on bolts of the same thread form and diameter
• Dry, indoor and sheltered locations such as workshops, enclosed machinery and interior fit-out
• Choosing between the 2 items here: they cover diameters from M30 to M36

Features

• Yellow passivate over electroplated zinc: indoor and under-cover use
• Grade: Grade 6
• Finish: Zinc Plated

Key specifications

Choosing the finish

Yellow zinc is zinc plating with a yellow passivate over it, a chromate conversion layer that gives the colour. Underneath it is electroplated zinc, so the same limits apply: dry, indoor and sheltered use, and not suitable for treated pine.

Use yellow zinc on the dry side of the job, and move to hot dip galvanised or 316 stainless where moisture, weather or salt air come into it.

What the class means

The nylon ring in this nut resists loosening from vibration. Do not use it in high-temperature locations, and expect the grip to reduce with repeated use.

Class 6 is Bremick designation. Because no strength figure is given, take the nut class from the bolt specification you are working to.

Fasteners are not lifting rated unless marked.

Choosing the right option

Nylon insert lock nuts are single-use, once removed and re-tightened, the nylon insert may not provide full locking torque. Select by thread size, pitch, and grade to match the bolt specification.

Product details