Bremick UNC Nylon Insert Lock Nut, 1"

A nylon insert lock nut is a hex nut with a nylon ring fitted in one end. The bolt or stud threads through the ring, which is the locking feature of the nut. There are 11 Bremick UNC nylon insert lock nut items (UNC thread, Grade 5, zinc finish): 10-24 to 1".

UNC is Unified National Coarse Thread, and TPI is threads per inch. Threads per inch are shown for each size. Grade is the imperial strength level of a screw or nut, for example Grade 2, Grade 5 or Grade 8. On the Bremick class vs grade chart, Grade 5 is high tensile, alongside metric Class 8.8. The pack or box quantity for each item is shown in the table. It changes with the size.

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
• Assemblies that stay at normal workshop or outdoor temperatures (not for high-temperature use)
• Dry-environment assemblies where a zinc plated finish is enough protection
• Medium-strength machinery and equipment work that needs more than Grade 2
• There are 11 items with diameters from 1/4" to 10", so work out the size you need first and then read across the table

Features

• 11 items: 10-24 to 1"
• UNC thread, nylon insert lock nut
• Grade 5, zinc finish
• Pack quantity shown for each item
• IFI100NE named for the items the stock list covers
• Zinc plated finish, for indoor and sheltered locations
• Grade 5, medium-carbon quenched and tempered steel

Key specifications

Choosing the finish

Zinc plating is a thin electroplated coating. It suits dry, indoor and sheltered work, and it does not meet treated-timber requirements, so zinc plated fasteners are not suitable for treated pine.

Keep zinc plated parts for the dry side of the job, and use hot dip galvanised or 316 stainless where moisture, weather or salt air are involved.

What the grade means

Nylon insert locknuts rely on a nylon ring to hold against vibration. They are not for high-temperature use, and reuse is limited because the grip falls off after repeated tightening.

Grade 5 is medium-carbon steel, quenched and tempered, in the SAE convention.

UNC is the coarse inch thread, the general-purpose choice; it only mates with UNC nuts and tapped holes of the same diameter.

Fasteners are not lifting rated unless marked.

Choosing the right option

Match the nut to the bolt, stud or rod: thread form, diameter and pitch must all agree. Sizes are nominal thread diameters in inches. 10-24 is a numbered size with 24 threads per inch. Compare the threads per inch with your bolt.

See also: Bremick UNC Hex Nut, Grade 5, High Tensile Steel, Zinc, 1/4" to 3/8", Bremick UNF Nylon Insert Lock Nut, Grade 5, Zinc, 1/4" to 7/8", Bremick BSW Nylon Insert Lock Nut, Zinc, 1/2", Pack of 200.