Ultra-Thin Self-Clinching Nut

Ultra-thin self-clinching nut: a low-height part for thin sheet, where less material is available to fill the undercut.

Key specifications

MaterialSpring Steel 65Mn / Stainless Steel 304
Installationpressed into a prepared hole with a clinching press (single side)
StandardGB/T 90.1 (acceptance), customer drawing
Typical substratecold-rolled steel, stainless and aluminium sheet 0.5–3 mm
Key inspectionspush-out, torque-out, face flushness

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Product overviewOverview

A self-clinching nut is held by cold flow, not by thread friction. A clinch nut is held by sheet material displaced into an undercut, so a thinner nut leaves less room for that material and push-out falls quickly as the gauge drops. On sheet around 1 mm both hole size and press force have to be held tightly, because there is little margin to correct either.

Material: Spring Steel 65Mn / Stainless Steel 304. It is pressed into a prepared hole with a clinching press, working from one side.

Key featuresFeatures

Because the nut is thin, the undercut has little wall to work with and both hole size and press force must be held to the drawing.
Annular undercut and knurl: sheet metal flows in to form a mechanical interlock.
Push-out and torque resistance come from metal shear and knurl bite.
Pressed in, the head finishes flush and the panel can be closed against a flat gasket or a sliding cover.

Typical applicationsApplications

Server and telecom rack panels
Sheet-metal chassis thread bosses
Battery pack enclosures

Selection notesSelection

Verify push-out on the production gauge rather than on a thicker trial piece; performance does not scale down with nut height.

Frequently asked questionsFAQ

Can a standard clinch nut be used on thin sheet?

Usually at a loss of push-out, because the undercut needs sheet material to flow into it. A thin-profile nut matched to the gauge performs better than a standard part forced onto thin sheet.

What matters during installation of the Ultra-Thin Self-Clinching Nut?

Press it into a prepared hole with a clinching press, working from one side. Because the nut is thin, the undercut has little wall to work with and both hole size and press force must be held to the drawing.

Specifications

Material	Spring Steel 65Mn / Stainless Steel 304
Surface Treatment	Zinc-plated / Black oxide
Standard	GB/T 90.1 (acceptance), customer drawing
Installation	pressed into a prepared hole with a clinching press (single side)
Typical substrate	cold-rolled steel, stainless and aluminium sheet 0.5–3 mm
Key inspections	push-out, torque-out, face flushness

Manufacturing and inspection

Push-out and torque tests are sampled per lot, with failure load recorded.We recommend a pilot assembly at the actual torque and mating part before locking the process parameters for volume.