This is BQUQ’s Precision Stamped Heatsink Clips Collection: stamped clips that hold heatsinks firmly to CPUs, GPUs, LED arrays, and power modules. Each clip is punched from spring
Precision Stamped Heatsink Clips Collection | BQUQ Factory Direct
This is BQUQ’s Precision Stamped Heatsink Clips Collection: stamped clips that hold heatsinks firmly to CPUs, GPUs, LED arrays, and power modules. Each clip is punched from spring steel or stainless s
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This is BQUQ’s Precision Stamped Heatsink Clips Collection: stamped clips that hold heatsinks firmly to CPUs, GPUs, LED arrays, and power modules. Each clip is punched from spring steel or stainless strip, then heat-treated to 40–45 HRC, giving you a spring-back repeatability of ±0.02mm and a flatness tolerance of 0.05mm across the entire clip length. You get clips that never lose grip, ship in 7 days for standard sizes, and cost less than machined equivalents — all from our 20-year factory in Dongguan, China.
Why Stamped Clips Beat Screws and Springs in Thermal Assembly
Screws add assembly time and require torque control. Loose springs rattle and lose pressure. A stamped heatsink clip is one piece: it snaps over the heatsink fin or PCB hole, applies a fixed downward force of 8–15N (depending on material and thickness), and never loosens from vibration. Our clips hold heatsinks flat against the component surface, reducing thermal resistance by up to 18% compared to screw-mounted setups. You cut assembly labor by 40% and eliminate the need for separate spring washers.
Materials and Heat Treatment We Use
We stock three base materials for clips: SUS301 stainless (for corrosion resistance), C75 spring steel (for high fatigue life), and SK5 carbon steel (for cost-sensitive runs). All clips go through a continuous furnace: hardening at 830–860°C, oil quenching, then tempering at 380–420°C to reach 40–45 HRC. This gives a yield strength of 1200–1400 MPa, so a clip can be flexed 100,000 cycles without permanent set. If you need a higher heat resistance, we offer a 430 stainless option rated to 200°C continuous operation.
Dimensional Control: From Strip to Finished Clip
Our progressive dies are ground to a tolerance of ±0.005mm on cutting edges. The stamped part exits with a burr height under 0.03mm, and we deburr by tumbling for 20 minutes before surface treatment. Hole-to-hole pitch is held at ±0.02mm, and the clip’s bend radius is controlled within ±0.05mm. We measure every clip’s spring-back force on a calibrated test rig — you get a force-versus-deflection curve with each batch. That is not typical for stamping houses; we do it because clips fail only when force drifts.
Inspection Before Every Shipment
Every lot gets a first-article inspection (FAI) on a CMM, plus a 2.5% sampling per AQL 1.0. We check: hardness (Rockwell C), flatness (surface plate with feeler gauge), spring-back force (load cell), and surface finish (profilometer). If any sample fails, the entire batch is re-sorted or re-stamped. A full inspection report with material certificates is included in the shipment — no extra charge. For automotive or medical clients, we can add a PPAP level 3 package at your request.
Sizes That Fit Common Heatsinks and PCBs
Our collection covers 12 standard clip lengths: 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 70mm, 80mm, and 100mm. Clip width options: 5mm, 8mm, 10mm, and 12mm. For TO-220 and TO-247 packages, we offer pre-formed clips with a center hole for screw mounting. For LED modules, we make flat clips with two mounting holes on 25.4mm centers. If your heatsink has no holes, we have a push-pin style clip that snaps into a PCB via a 3.2mm hole.
Surface Finish and Corrosion Protection
Bare stainless clips come at Ra 0.8µm. For spring steel, we apply zinc plating (8–12µm) with clear or yellow chromate, giving 72 hours of salt spray resistance. Need black? We do black oxide (0.5–1.5µm) for a matte finish that reduces glare in optical assemblies. All finishes are RoHS compliant and lead-free. If you must avoid any coating, we can supply oiled or dry-lubricated clips — just specify on your drawing.
Lead Time and Tooling for Custom Clips
Standard clips from the collection ship in 7 days — no tooling charge. Custom clips require a new progressive die: 15–20 days for tooling, then 7 days for production. Tooling cost ranges from $800 to $2,500 depending on clip complexity (number of bends, holes, and tolerances). We keep your die in our toolroom free for 5 years; subsequent orders only pay per-part cost. The die is insured and documented with CAD files sent to you.
Specification
Value / Range
Material Options
SUS301, C75, SK5, 430 stainless
Hardness (HRC)
40–45 (standard), 38–42 for 430 SS
Thickness Range
0.15mm – 1.2mm
Length Range
20mm – 100mm (standard)
Width Options
5mm, 8mm, 10mm, 12mm
Dimensional Tolerance
±0.02mm (hole pitch), ±0.05mm (bend radius)
Surface Finish (Ra)
0.8µm (bare), 0.4µm (polished)
Flatness
0.05mm max over full length
Spring Force
8N – 15N at working deflection
Lead Time (standard)
7 days from order
Lead Time (custom)
15–20 days tooling + 7 days production
MOQ
No MOQ — order 100 or 1,000,000
How to Order Samples and Validate Fit
We send free samples (up to 5 pieces) for any standard clip in the collection. Just tell us the length and width, plus your heatsink or PCB thickness. For custom clips, a sample run of 50 pieces costs $50 plus shipping, credited toward your first production order. We recommend you test the clip’s grip force at your working temperature — our clips are rated from -40°C to 150°C continuous. If you need a different force, we can adjust the strip thickness or heat treatment.
FAQ: MOQ, Customization, Quality Control, Lead Time
Do you have a MOQ for this collection?
No MOQ — you can order 100 pieces for prototyping or 100,000 for production, and the per-piece price drops with quantity breaks at 1k, 5k, and 10k units.
Can you make a clip that is not in your standard size list?
Yes, we make custom clips from your drawing or a simple sketch — we will suggest a die design and provide a DFM feedback within 24 hours.
How do you ensure the clips work consistently across a large batch?
We run 100% dimensional checks on critical dimensions using optical comparators and sample hardness tests every 500 pieces, plus a full FAI report per lot.
What is the fastest lead time if I need clips urgently?
For standard clips in stock, we ship in 3 days via DHL; for custom clips, we can split the tooling build into two shifts to meet a 12-day deadline.
Start With a Firm Quote — Not a Guess
Send your drawing or clip dimensions to sc@bquq.com, or WhatsApp +86 13713157787. We reply with a firm quote within 12 hours (usually 3–4 hours during China business time). Include the heatsink thickness, clip length, and material preference. We will confirm the spring force and suggest a surface finish based on your environment. Our 20-year factory in Dongguan, China, handles your clip order from die to shipment — no middlemen, no export agents.
While you evaluate your clip geometry, check our CNC cutting tool selection guide to ensure your heatsink’s mating surfaces are machined to the right finish — a rough surface under the clip reduces heat transfer. And to set tolerances for your heatsink base or PCB holes, read our CNC machining tolerances guide. Both are practical, no-fluff reads.
Email sc@bquq.com now. Or call/WhatsApp +86 13713157787. We will clarify your requirement and send a quote today — not next week. This is precision manufacturing made in China, with no MOQ to slow you down.
