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Prevailing Torque Type Hex Lock Nuts Thin Type

China supplier Xiaoguo® Prevailing torque type Hex lock nuts thin type feature a built-in locking design and slim profile. They provide reliable locking performance under vibration without extra washers or adhesives, ideal for limited-height spaces. Perfect for automotive panels and machinery covers, they offer great value for bulk orders.

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Product Description

Before leaving the factory, every batch of Prevailing torque type Hex lock nuts thin type goes through a full set of routine inspection steps, no extra fancy testing, just basic and necessary checks to make sure each piece meets basic use and size standards. First, we check the overall size and thread precision with standard measuring tools, plain and simple. We make sure the thickness, hex width, and thread pitch all fall within the required tolerance range — no parts that are too big or too small get passed. We also look over the nut body for any obvious flaws, like burrs, dents, or rough, uneven spots on the surface.

（2）Core Prevailing Torque Test

Next up is the main prevailing torque test, the most important check for this type of lock nut. We use professional torque testing machines to test the locking torque, writing down the highest and lowest torque numbers when putting the nut on and taking it off. We make sure the torque stays steady and meets the set technical standards, so the Prevailing torque type Hex lock nuts thin type isn’t too loose or too tight when used. We also check how tough the inner nylon insert is, making sure it stays fixed well and doesn’t fall out or bend with normal assembly force.

（3）Material and Surface Finish Check

After that, we check the base material and surface finish. We confirm the metal material is the right grade as required, and if there’s a surface coating, it’s applied evenly with no bare spots or rust marks on the surface.

（4）Batch Sampling Inspection and Final Packaging

Last, we run random sample checks on every batch. We pick a set number of pieces and redo all the tests above to make sure the whole batch is consistent. All good parts are packed and labeled clearly, and bad ones are sorted out separately. No defective items get shipped out directly to customers.

Product Material and Application：

Common Material	Basic Performance Traits	Suitable Industry & Usage Scene
Carbon Steel (Grade 4.8/8.8)	Affordable, solid strength, standard locking performance, fits regular assembly; with zinc plating for basic rust resistance	General machinery manufacturing, household appliance assembly, small hardware processing, daily industrial production lines; for non-corrosive, low-vibration regular fixed use
Stainless Steel304	Good corrosion resistance, no easy rust, steady torque, suitable for humid or mild outdoor environments	Outdoor furniture installation, plumbing equipment, electronic equipment shell fixing, marine small fittings; areas needing basic anti-rust and stable locking
Stainless Steel 316	Strong corrosion and rust resistance, works in harsh, high-humidity or slightly chemical-exposed environments	Marine equipment, coastal engineering fittings, chemical industry auxiliary equipment, outdoor communication equipment; long-term outdoor or corrosive condition use
Prevailing torque type Hex lock nuts thin type	Thin body design, saves installation space, nylon insert keeps stable locking torque	Auto parts assembly, aerospace small parts, precision instrument fixing, compact equipment assembly; scenes with limited installation space

FAQ：

What is the minimum order quantity for this thin Prevailing torque type Hex lock nuts thin type?

We have a standard minimum order quantity for bulk purchases, and we don’t take really small batch orders to keep our production running smoothly. This MOQ follows common industrial rules for fasteners, and we can make a small adjustment for long-term regular clients. We won’t accept trial orders under 500 pieces, because tiny batches push up production costs and make lead times longer. The same MOQ rule applies to every order, no special exceptions for small one-time orders.

Prevailing Torque Type Hex Lock Nuts Thin Type

Mon	M5	M6	M8	M10	M12	M14	M16	M20	M24	M30	M36
P	0.8	1	1.25	1.5	1.75	2	2	2.5	3	3.5	4
e min	8.79	11.05	14.38	17.77	20.03	23.36	26.75	32.95	39.55	50.85	60.79
h max	7.2	8.5	10.2	12.8	16.1	18.3	20.7	25.1	29.5	35.6	42.6
h min	6.62	7.92	9.5	12.1	15.4	17	19.4	23	27.4	33.1	40.1
k min	4.8	5.4	7.14	8.94	11.57	13.4	15.7	19	22.6	27.3	33.1
s max	8	10	13	16	18	21	24	30	36	46	55
s min	7.78	9.78	12.73	15.73	17.73	20.67	23.67	29.16	35	45	53.8