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Shanghai Nate Automobile Fastener Co., Ltd.
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Automotive Body Fasteners for Welding and Riveting

Body fasteners go onto the vehicle early, mostly by welding or riveting, and they stay there for the life of the car. If a nut welds badly or a stud sits out of place, the problem shows up on the body line, where it is expensive to fix.

This category covers the seven fasteners we make for body building: weld nuts, weld bolts and weld studs, aluminium grounding components, a riveted stamping sub-assembly, a steel sleeve and a seat armrest bracket. All of them are made in our own factory.

Quality system certifications

IATF 16949:2016 VDA 6.3 Formel Q BIQS T-QMS

Where Our Fasteners Sit in Body Building

Three stages, three groups of parts. Each one is described in detail further down the page.

01Sheet metal partsStamping Sub-Assembly
Steel Sleeve
02Welding on the bodyWelding Nut
Welding Bolt
Welding Stud
Aluminum Grounding Components
03Interior fittingSeat Armrest Bracket
Trim, carpet and insulation carried on weld studs

What We Do for the Body Shop

A welded fastener is only as good as the material and the process behind it. This is how our factory is set up for that.

01Nearly 30 years of automotive fasteners

We have made automotive fasteners for nearly 30 years, welded and riveted types included. We know what a body shop checks first: the part welds well, its weld features are consistent, and every lot behaves like the last.

02Material chosen for the weld

A weld bolt is not picked from a catalogue alone. Its material, such as low carbon steel or boron steel, has to suit the workpiece being welded and the load the bolt will carry. Our R&D department works through that choice with you.

03Many independent lines

Our large factory runs many independent production lines, so welded, riveted and aluminium parts do not have to share one process.

04A standard, audited process

Production runs under IATF 16949:2016 and is audited to VDA 6.3. A defined process with defined checks is what makes a welded part repeatable from lot to lot.

05OEM/ODM at factory-direct prices

Send a drawing, a sample, or just the welding conditions: base material, load and what the part has to carry. We quote factory-direct, with no trading company between us and your line.

Quick Reference of Our Body Fasteners

Process, typical use and material for each part at a glance.

Product Process Typical use Grade
Welding Nut Welding Strong threaded point where only one side of the part can be reached M4~M27
Welding Bolt Welding Welded fixing point matched to the workpiece and the load M4~M18
Welding Stud Welding Holds trim, carpets and heat insulation boards on the body sheet metal CT4~CT6,M4~M6,T4-T6
Aluminum Grounding Components Welding Reliable ground on aluminium sheet metal or aluminium profiles M8
Stamping Sub-Assembly Riveting Nut fixed onto a sheet metal part M5~M12
Steel Sleeve / High-strength link between metal plates and external-thread parts, for large loads and vibration M6~M14
Seat Armrest Bracket Assembly Armrest fitted and removed quickly for maintenance and cleaning /

Steel Bodies and Aluminium Bodies

Many bodies now use both metals. We make welded fasteners for each, so one supplier can cover a mixed-material body.

STEEL

For steel sheet metal

Welding Bolt in low carbon steel or boron steel, Welding Stud in steel, and the Steel Sleeve for high-load connections.

ALUMINIUM

For aluminium sheet metal and profiles

Welding Stud in aluminium alloy, and the Aluminum Grounding Components set for welding on aluminium of various grades.

Range of Our Body Joint Fasteners

Welded to the Body

These four parts are welded to the body or to aluminium sheet metal and then carry a thread, a trim fixing or an earth connection.

ONE-SIDE ACCESS

Welding Nut

High strength and good welding performance. It is the usual choice where only one side of the component can be reached, and after welding it forms a very strong joint.

MATERIAL-MATCHED

Welding Bolt

Made from weldable materials such as low carbon steel or boron steel. The right choice depends on the workpiece being welded and the mechanical load the bolt must bear, so we ask for both before recommending a material.

STEEL OR ALUMINIUM

Welding Stud

Available in steel and in aluminium alloy. Welded to the body sheet metal, it carries interior and exterior trim parts, carpets, heat insulation boards and similar accessories.

GROUNDING

Aluminum Grounding Components

A set of aluminium alloy bolt, nut and cover plate, made for welding on aluminium sheet metal or aluminium profiles of various grades. Its low resistivity gives a reliable ground.

On our production line. Weldability depends on the material and on the shape of the welding features, so we control both together.

Fixed Into Sheet Metal Parts

Not every fixing point is welded. These two parts are built into the sheet metal component itself.

RIVETED

Stamping Sub-Assembly

A small fastener assembly in which a nut is fixed onto a sheet metal part through riveting. [Client to provide: nut types and sheet thickness range]

LARGE LOAD

Steel Sleeve

Makes a high-strength connection between metal plates and external-thread parts, and suits places that bear large loads and vibration. For the aluminium version, see the Aluminium Alloy Sleeve in our Sheet Joint Fasteners category.

On our production line. These parts are fixed into a panel and then loaded, so the dimensions that decide the fit are inspected as critical characteristics.

Interior Fitting

After the body is built, the interior goes in. Welding studs already carry the trim, and the seat armrest bracket handles the armrest.

QUICK FIT

Seat Armrest Bracket

Made of metal, with enough strength and stability to carry the armrest. The armrest can be installed and removed quickly when needed, which makes maintenance and cleaning easier.

How We Work with Body Shops

Most body fastener projects follow the same four steps.

01Share the applicationA drawing or sample, plus the base material, the welding or riveting process, and the load.
02We review and recommendOur R&D team checks the material and the part against your conditions and proposes a design.
03Samples for your trialYou test the samples on your own process before anything goes to series production.
04Series supplyParts are made on our own lines under our certified quality system, at factory-direct prices.

Specifying a Body Fastener?

Tell us what is being welded, riveted or fixed, and what it has to carry. Our engineers can suggest which of these parts fits, or whether a custom design makes more sense.

Our other automotive fastener categories: Sheet Joint Fasteners, Four-Door Two-Cover Fasteners, Quick Change System Fasteners, Hub System Fasteners, Semi-Shaft System Fasteners.