This collection covers stamped spring clips in zinc-plated carbon steel, engineered for retention and vibration resistance in assemblies from automotive brackets to consumer electronics. We hold flatn
This collection covers stamped spring clips in zinc-plated carbon steel, engineered for retention and vibration resistance in assemblies from automotive brackets to consumer electronics. We hold flatness to 0.05mm and hole-to-hole positioning to ±0.05mm, with a surface finish of Ra 1.6 after plating. Hardness is controlled at 45-50 HRC post heat treatment, and standard production ships in 15 days from drawing approval.
Bent wire clips deform under cyclic load. Stamped clips do not. Our progressive dies produce a uniform grain flow along the clip's bend radius, eliminating stress risers. Each clip's spring rate is verified on a load tester—we hold a ±5% variance on the force-to-deflection curve. If your design requires a retention force of 12N at 1.5mm deflection, we deliver that within 0.6N, clip after clip.
Zinc plating is not a single spec. We offer clear, yellow, or blue passivation. Standard thickness is 8-12 microns, which passes 72 hours of neutral salt spray testing per ASTM B117. For outdoor or underhood applications, we add a trivalent seal that pushes corrosion resistance to 120 hours without affecting the clip's dimensional envelope. Plating is applied after heat treatment, so the spring temper is not compromised.
We stock three base materials: C75S (1.1248) spring steel, 65Mn, and 301 stainless for high-temperature zones. The C75S clips are oil-quenched and tempered to 45-50 HRC. We do not use case hardening—that only hardens the skin and leaves a soft core. Through-hardening gives you a consistent spring modulus across the entire cross-section. For thin clips under 0.8mm thickness, we use 65Mn with a modified tempering cycle to prevent brittleness.
Your production line stops when clips jam in feeders or misalign in fixtures. Our die clearances are held to 5% of material thickness, which produces a clean shear zone with minimal burr. Burr height is capped at 0.03mm—measured on a comparator before every lot ships. If your clip has a critical locating slot, we hold that dimension to ±0.02mm using wire-cut tooling inserts. This is what makes our Zinc Plated Stamped Spring Clips Collection feel like a drop-in replacement, not a rework project.
Every batch goes through a three-stage check. First, a coordinate measuring machine (CMM) verifies critical geometry on five pieces from the first run. Second, a hardness test is performed on a Rockwell scale—we reject any piece below 45 HRC. Third, a random sample of 0.5% of the lot is visually inspected under a 10x magnifier for plating voids or edge tears. We send you a PDF inspection report with the shipment, including salt spray results and material certs. If you want a full lot inspection, we offer that at no extra charge for orders under 5,000 pieces.
| Parameter | Value / Range | Notes |
|---|---|---|
| Materials | C75S, 65Mn, 301 SS | Strip thickness 0.2–3.0mm |
| Hardness | 45–50 HRC | Through-hardened, oil quenched |
| Dimensional Tolerance | ±0.05mm | Critical features ±0.02mm |
| Flatness | 0.05mm max | After plating, measured on granite plate |
| Surface Finish (Ra) | Ra 1.6 | As-stamped, before plating |
| Burr Height | ≤0.03mm | Per DIN 2670 Part 1 |
| Plating Thickness | 8–12 microns | Clear / yellow / blue zinc |
| Salt Spray Resistance | 72–120 hours | ASTM B117, depends on passivation |
| Lead Time | 15 days | From drawing approval, standard stock sizes |
| MOQ | No MOQ | Prototypes accepted from 1 piece |
Stainless steel costs 3x more per kilogram and work-hardens during stamping, which shortens die life. For zinc plated clips inside a housing or bracket, carbon steel is the smart choice. C75S gives you a higher fatigue limit than 65Mn, but 65Mn is easier to form for complex geometric features. We help you pick the right grade based on your operating temperature and cycle count. If you are unsure, send us your deflection and load requirements—we will suggest a material and simulate the spring rate in our FEA software.
No MOQ—we accept prototype orders from one piece and scale to millions per year.
Yes, we offer clear, yellow, blue, and black zinc, plus a trivalent seal for higher corrosion resistance.
We use CMM inspection on first-run pieces, Rockwell hardness testing on every batch, and a 0.5% random visual inspection per lot.
Tooling takes 10 days, and production takes 5 days after approval—15 days total for standard materials.
Send us a 2D PDF and 3D STEP file. We need the material thickness, the maximum operating temperature, and the required spring force at a given deflection. If you do not have a drawing, send us a sample part and we will reverse-engineer it within 48 hours. We have built over 2,000 progressive dies for spring clips since 2004. This is not our first time seeing an unusual bend radius or a tight tolerance. Our engineers will flag any feature that risks cracking during bending and suggest a die-radius adjustment. This precision manufacturing approach is what has kept our clients in the automotive and appliance sector reordering for 15 years.
For reference on how to pair our clips with cutting tools, read our CNC cutting tool selection guide. If your clip interfaces with a machined housing, check our CNC machining tolerances guide to align the mating part's specs.
Send your drawing to sc@bquq.com or message us on WhatsApp at +86 13713157787. We reply with a firm quote—not a ballpark—within 12 hours on business days. Include your annual volume, target price per piece, and any plating requirement. We will send you a DFM feedback sheet and a sample of our inspection checklist. Made in China, engineered for global OEMs. No MOQ, no surprises.
| Parameter | Capability |
|---|---|
| Materials | SPCC, SGCC, SUS301/304/316, brass, copper, beryllium copper, phosphor bronze |
| Process | Progressive die stamping, fine blanking, deep drawing, bending, tapping |
| Tolerance | ±0.01mm standard, ±0.005mm on request |
| Surface | Zinc plating, nickel, tin, gold, powder coating, passivation, anodizing |
| Die Size | Up to 1200 x 800 mm, 16-250 ton presses |
| Thickness | 0.05 - 6.0 mm sheet metal, wire 0.1 - 8.0 mm |
| Prototype | 7-15 days tooling, no MOQ on samples |
| Inspection | Full report per batch, CMM and optical measurement |
