Projection Weld Nuts for Automotive Body and Structural Joints
Weld Nuts
Resistance-welded nuts — fused to sheet metal via projection welding, creating a permanent internally-threaded boss without drilling, tapping, or back-side access.
Supplied across square (DIN 928), hex (DIN 929), round, and flange weld nut configurations. Applications: body-in-white panels, seat-track mounting, chassis bracket retention, HVAC module mounting, and sheet-metal assemblies requiring permanent threaded attachment points.
Why source through Way Fast
We serve Tier 1 and Tier 2 automotive suppliers — primarily to North American OEM programs, including platforms shared with European and Japanese brands — with day-to-day experience handling the documentation and tolerance standards these projects demand.
01 · Multi-source capacity
Working with multiple qualified manufacturing partners — we match each order to the best-fit production line, stabilizing lead times and cost when single-source capacity tightens.
02 · Submission-grade documentation
Full support for PPAP (Levels 1–3), IMDS submission, and RoHS / REACH documentation.
03 · Audited special-process chain
Partners certified to AIAG CQI-9 (heat treat), CQI-11 (plating), and CQI-12 (coating) — covering the full post-processing chain under audited special-process controls.
04 · Multilingual drawing review
Technical drawing review in English, German, Japanese, and Chinese — including ISO 8015 GPS callouts, JIS standards, thread tolerance classes, and coating specifications.
05 · Nut style and substrate welding
Nut style (square / hex / round / flange), projection geometry, material grade, and surface treatment matched per customer welding process (projection, seam, or spot) and sheet substrate — drawing-reviewed against customer panel thickness and welding equipment. Active programmes across standard DIN and OEM-specific weld nut configurations.
Family coverage · 4 types
Selecting across weld nut configurations
Square Weld Nut (DIN 928)
Standard · projection welding
Square-body weld nut with projection welds on the bearing face. Most common body-in-white configuration — widely used in automotive panel attachment, seat track mounting, and thin-sheet structural joints.
Hex Weld Nut (DIN 929)
Hex body · mainstream
Hex-body weld nut — same projection welding process as square, selected where hex mating tool access is required. Used in chassis brackets and accessory mounting.
Round Weld Nut
Cylindrical body · specialty
Round cylindrical body weld nut. Selected for specific mounting geometries or where square / hex body is geometrically awkward — e.g. rotating or axial-symmetric mount points.
Flange Weld Nut
Flat bearing face · sheet metal
Weld nut with integral flange providing extended bearing surface. Preferred on thin-sheet panels where clamp load must be distributed beyond the nut body footprint.
Sizes
M5 – M16 · #10 – 5/8″
Lengths
N/A — nut body dimensions per DIN / JIS / ISO specification.
Material
Low-carbon steel (for weldability), alloy steel, or stainless steel — per customer specification.
Finishes
Bare steel (improved weldability), copper flash, zinc (post-weld applications), or to customer specification.
Head types
N/A — nut body form per DIN / JIS / ISO standard.
Drive
N/A — installation by projection welding equipment; threaded bore accepts standard bolt per thread spec.
Lead times
Quotation and production
Quotation
Within 5–7 business days from receipt of drawing and specifications.
Sample & production
Schedules issued per project.
Send your drawing with nut style, thread spec, substrate material, welding process, and target volume — specification and manufacturer matched per programme.
Supplied through qualified manufacturing partners to DIN 928 / DIN 929 / JIS B1196 weld nut specifications. PPAP / IMDS / RoHS / REACH documentation per customer program.
