Nylon Insert Locknuts Manufacturers Suppliers Stockist India

Nylon Insert Locknuts Manufacturers Suppliers Stockist India

Nylon Insert Locknuts Manufacturers Suppliers Stockist India

The K.M Steel India stocks a large inventory of fasteners for commercial, industrial, utility, and OEM installations. We have Fasteners such as screws, Nylon Insert Locknuts , bolts, nuts, washers, and studs available in several grades and materials. Along with the standard fasteners we also stock B7 bolts & studs and stainless steel, nuts, Nylon Insert Locknuts, bolts, and washers. We also carry a large inventory of mechanical anchors such as, drop-ins, wedge anchors, tapcons, lead, plastic, and hollow wall anchors.

K.M Steel India is a full line fastener distributor that stocks a wide variety of products. No matter what the specification, we can find what you're looking for. If it's not on our shelves we will outsource the product to ensure our customers' satisfaction. With K.M Steel India, there is no job to large or small. We cater to any fastener need.

K.M Steel India is a major player in the fastener industry who handles the needs of any customer. For construction, we sell Nylon Insert Locknuts to all the fields with a heavy concentration in electrical, mechanical, and steel erection contractors. We have a very large inventory of Nylon Insert Locknuts , specialty bolts in all of our warehouses, supplying fields such as fasteners, anchors, channel and strut accessories.

K.M Steel India has established itself as the market leader and is recognised for exceptional service, timely delivery, competitiveness, and total solutions.

we also have our sales representatives to understand the requirements of our clients, we maintain ready stock of Nylon Insert Locknuts in Cities like Abu Dhabi, Riyadh, Manama, Muscat, Doha, Dubai, Damascus, Khartoum, Beirut, Jeddah, Aleppo, Alexandria, Algiers, Amman, Mosul, Cairo, Baghdad, Dammam, Casablanca, Basra, Mecca, Tripoli, Rabat, Sana'a, Arbil, Hilla, Port Said, Marrakech, Medina, Al Hudaydah, Omdurman, Damietta, Homs, Kafr Dawar, Benghazi, Fez, Bahri, Nouakchott, Sulaymaniyah, Safi, Zarqa, Oran, Kirkuk, Ismailia, Tunis, Agadir, Tangier, Sharjah, Shibin El Kom, Misratah, Matrah, Aden, Najaf, Karbala, Latakia, Sousse, Meknes, Gaza, Fallujah, Aswan, Kassala, Al-Ubayyid, Sohag, Kuala Lumpur, Penang, Kuching & many more...

Nylon Insert Lock Nuts

Nylon insert lock nuts are hex nuts that have a captive nylon washer mounted in their top to create a prevailing torque type lock nut. The undersized washer forms a compression grip that binds on the threads of the mating fastener to resist loosening. Due to limitations of the non-metallic insert, the nuts cannot be used at elevated temperatures or with certain chemicals but the nylon washer does provide a gas and moisture seal. Various colors of nylon are used; some manufacturers use a specific color. Regular, thin pattern and machine screw nylon insert lock nuts are used in aerospace, agricultural equipment, appliances, avionics, computers, furniture, home and garden, lighting, medical equipment and vehicles (auto, truck and trailer). Heavy pattern types are used on bridges and buildings, in heavy industry, and on oil field machinery and railroad equipment. Nylon insert lock nuts are also known as: 

aircraft lock nuts, elastic lock nuts, elastic stop nuts, nyloc nuts, nylock nuts, nylon insert stop nuts, stop nuts.

Because the washer largely returns to its original form, nylon insert lock nuts may be reused a limited number of times. Lock washers are not used with prevailing torque lock nuts.

By definition, "Prevailing-torque locking fasteners have a self-contained feature which creates frictional interference between the threads of the mating components." Consequently, unlike free spinning lock nuts, there is a resistance to rotation during both assembly and disassembly requiring them to be wrenched; that resistance is called prevailing torque. The advantage is that disassembly is unlikely even if preload diminishes completely because of the remaining rotational resistance. Despite the fact they are called "lock nuts," nylon insert lock nuts are not permanently locked in place so they can be adjusted or removed after installation. However, their "locking" feature does resist loosening without the nuts being seated, which allows them to be used as stop nuts or spacers for rotating or other components.

Threads are standard right-hand and Unified inch coarse series (UNC, Unified National Coarse) or Unified inch fine (UNF, Unified National Fine).

Nylon insert lock nut size refers to its nominal thread diameter. Typically, sizes range from about 2-56 to 2". Sizes less than 1/4" are listed as a number size (the larger the number the larger the size) while sizes that are 1/4" and larger are specified in inches, usually fractional rather than decimal. Not all types are available in all sizes.

Nut width and thickness vary with the size and type of the nylon insert lock nut: thin, regular (full height), heavy and machine screw. See Table 1 for a description of each type.

The nuts are considered one-way lock nuts because they can only be installed one-way—top up. Top lock, or top locking, is another term used to describe this type of lock nut. Nylon insert lock nuts spin freely until the nylon washer engages the threads of the mating part. For the locking action to be effective, the washer must contact fully formed threads so several threads of a standard bolt/screw should extend beyond the top of the nut.

Grades 2 and 8 are available. Steel is a common material along with stainless steel. Zinc plated and yellow zinc plated are typical finishes for steel nylon insert lock nuts.

Always follow the manufacturer's recommendations regarding nut reuse, thread lubricants and torque values. Do not apply standard torque values to prevailing torque lock nuts because the joint may not be tightened to the correct clamping force due to the additional friction of the locking element.

Generally, prevailing torque lock nuts are not considered suitable for long threaded assemblies because extended nut travel along the threads could damage the nut's locking feature. Therefore, the length of the bolt/screw should not be much longer than that needed to ensure full thread engagement with the nut.

Thin, Grade 2, Zinc Plated Nylon Insert Lock Nuts
Thin, Stainless Steel Nylon Insert Lock Nuts
Grade 2, Zinc Plated Nylon Insert Lock Nuts
Grade 8, Yellow Zinc Plated Nylon Insert Lock Nuts
Stainless Steel Nylon Insert Lock Nuts
Heavy, Grade 2, Zinc Plated Nylon Insert Lock Nuts
Machine Screw, Stainless Steel Nylon Insert Lock Nuts
Machine Screw, Grade 2, Zinc Plated Nylon Insert Lock Nuts

Nylon Insert Lock Nuts Dimensions

Dimensions of Nylon Insert Lock Nut - "Nylock"

Nylon Insert Stop Nuts, Standard Pattern
Nominal Size 
or Basic Thread Diameter
Across Flats
Thickness Side Height Width 
Across Corners
Basic Max Min Max Min Ref Ref
4 0.1120 1/4 0.251 0.423 0.153 0.133 0.081 0.268
5 0.1250 1/4 0.251 0.243 0.153 0.133 0.081 0.268
6 0.1380 5/16 0.313 0.305 0.188 0.168 0.103 0.339
8 0.1640 11/32 0.345 0.336 0.239 0.219 0.140 0.374
10 0.1900 3/8 0.376 0.367 0.249 0.229 0.140 0.410
1/4 0.2500 7/16 0.439 0.430 0.328 0.298 0.225 0.482
5/16 0.3125 1/2 0.502 0.492 0.359 0.329 0.250 0.552
3/8 0.3750 9/16 0.564 0.553 0.468 0.438 0.324 0.698
7/16 0.4375 11/16 0.627 0.616 0.468 0.438 0.324 0.698
1/2 0.5000 3/4 0.752 0.741 0.609 0.579 0.464 0.837
9/16 0.5625 7/8 0.877 0.865 0.656 0.626 0.469 0.978
5/8 0.6250 15/16 0.940 0.928 0.765 0.735 0.593 1.051
3/4 0.7500 1-1/8 1.064 1.052 0.890 0.860 0.742 1.191
7/8 0.8750 1-5/16 1.252 1.239 0.999 0.969 0.790 1.403
1" 1.0000 1-1/2 1.440 1.427 1.078 1.016 0.825 1.615
1-1/8 1.1250 1-11/16 1.627 1.614 1.203 1.141 0.930 1.826
1-1/4 1.2500 1-7/8 1.815 1.801 1.422 1.360 1.125 2.038
1-1/2 1.5000 2-1/4 2.197 2.159 1.640 1.578 1.313 2.444

Nylon Insert Lock Nuts Price

high discount on big bulk Order

FOB Price : $0.91 to 100 Each Piece


Pay Mode Terms: L/C (Letter of Credit), T/T (Bank Transfer)
Port of Dispatch : CST Air Port, Mumbai & Nhava Seva Sea Port
Production Capacity : 500 Metric Tons/Month

For quick Quote For Nylon Insert Locknuts, please contact our Sales team.

Email : kmsteelindia@gmail.com, info@kmsteelindia.com

/// Quick Contact Us : +91-9869714760


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