Our CNC machined furniture hardware hinges and knobs are precision-milled from solid aluminum, stainless steel, or brass, delivering a dimensional tolerance of 0.01 mm and a surf
CNC Machined Furniture Hardware Hinges Knobs by BQUQ | Precision Fit
Our CNC machined furniture hardware hinges and knobs are precision-milled from solid aluminum, stainless steel, or brass, delivering a dimensional tolerance of ±0.01 mm and a surface finish down to R
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Our CNC machined furniture hardware hinges and knobs are precision-milled from solid aluminum, stainless steel, or brass, delivering a dimensional tolerance of ±0.01 mm and a surface finish down to Ra 0.4 µm. Each piece is machined on 5-axis CNC centers with a maximum runout of 0.02 mm, ensuring every hinge pin aligns perfectly and every knob threads smoothly. With a hardness of up to 45 HRC on steel parts and a standard production lead time of just 7 days, this is precision manufacturing made in China that your assembly line can trust without rework.
How Our 5-Axis CNC Centers Eliminate Hinge Pin Misalignment
Hinges fail when the pin bore and the leaf surface are not perfectly perpendicular. We machine the hinge body and pin bore in a single clamping operation on 5-axis DMG MORI centers. This eliminates the need for re-fixturing, which is the main cause of angular error in multi-step machining. The result is a concentricity of 0.01 mm between the pin and the knuckle, so door sag is virtually impossible even after 200,000 open-close cycles. For knobs, we use live tooling to cut the thread and the gripping surface simultaneously, keeping runout under 0.02 mm so the knob spins true without wobble.
Materials and Heat Treatment for Daily Abuse
We do not use soft 201 stainless or low-grade zinc alloys. For hinges, we use 304 stainless steel (sus304) or 6061-T6 aluminum. For knobs, we offer 1215 free-cutting steel, 316 marine-grade stainless, or C36000 brass for decorative applications. Steel parts undergo vacuum heat treatment to reach 42–45 HRC, which resists bending when a heavy door is pulled at an angle. Aluminum parts get a hard anodizing layer of 50 µm (Type III), which is not just a color but a wear-resistant ceramic surface. Brass knobs are plated with satin nickel or PVD gunmetal to prevent fingerprint corrosion.
Surface Finish Options That Match Your Furniture Line
Standard machining leaves a uniform Ra 0.8 µm finish, but we can push to Ra 0.4 µm for visible surfaces. For brushed look, we use a 320-grit belt finish that gives a consistent linear grain. For a matte feel, we bead blast with fine glass media, yielding a low-glare surface that does not show smudges. For polished chrome or gold, we use a two-step process: mechanical polish to mirror finish, then electroplating to a thickness of 15 µm to prevent peeling. Every finish is verified with a profilometer before packing.
Inspection Before Every Shipment: CMM and Go/No-Go Gauges
We do not rely on spot checks. Every batch of hinges and knobs goes through a Zeiss CMM that measures critical dimensions—bore diameter, hole spacing, and thread pitch—against your CAD file. For thread accuracy, we run a Go/No-Go gauge on 100% of threaded knobs. For hinge pin fit, we test the opening torque on a sample of 5 parts per batch to ensure it falls between 0.3 and 0.8 N·m, which gives a firm but smooth swing. A full inspection report with CMM data and material certificates is included with every shipment.
Specification
Value / Range
Available Materials
6061-T6 Al, 304/316 SS, C36000 Brass, 1215 Steel
Hardness (Steel)
42–45 HRC (vacuum heat treated)
Hardness (Aluminum)
Type III hard anodize, 50 µm thickness
Dimensional Tolerance
±0.01 mm (machined features)
Surface Finish (Machined)
Ra 0.4 µm to Ra 0.8 µm
Pin Bore Runout
≤ 0.02 mm
Hinge Cycle Life
200,000 cycles (tested)
Thread Accuracy (Knobs)
6H class per ISO 965
Standard Lead Time
7 days (for 1–1000 pcs)
Minimum Order Quantity (MOQ)
No MOQ — start with 1 prototype
Why Our Lead Time Stays at 7 Days Even for Custom Knobs
Our factory runs 24/7 with a dedicated line for furniture hardware. Because we hold a stock of raw bars (Al 6061, SS304, brass) in standard diameters, we skip the long material procurement stage. For custom knobs with a new shape, we program the CNC path in 4 hours using CAM software, and we cut the first article within 24 hours. The remaining 6 days cover machining, surface finishing, and inspection. If you need a lower volume of 50 pieces, the lead time is 5 days because we can run them on a single pallet without changing tooling.
Packaging That Prevents Surface Scratches in Transit
Machined surfaces are fragile. We individually wrap each hinge and knob in anti-tarnish VCI paper, then place them into foam-cut inserts inside a double-wall carton. For large hinge orders, we use partitioned trays that keep parts from touching each other. This is critical because a single scratch on a mirror-polished knob will cause a reject at your final inspection. We also include a humidity indicator card in each box to prove the packaging stayed dry during shipping.
Custom Logos and Hole Patterns for OEM Furniture Brands
We regularly machine custom hole patterns for European soft-close hinge systems and American-style face-frame hinges. Send us your 2D/3D drawing, and we will adjust the bore depth, counterbore angle, and screw pilot depth to match your exact cam or dowel system. For knobs, we can engrave your brand mark on the top face using a 0.1 mm deep laser pass, which survives 500+ cleaning cycles with chemicals. We keep your original CAD files on file, so reorders are a simple email away with zero programming cost.
What is your MOQ for these hinges and knobs?
We have no MOQ — you can order a single prototype to test fit, then scale to 10,000 pieces without any setup fee change.
Can you machine a hinge from a sample we send you?
Yes, we reverse-engineer your physical sample using a 3D scanner and produce a matching CAD model within 48 hours, then machine to the same dimensions with our ±0.01 mm tolerance.
How do you ensure quality control on a batch of 5,000 pieces?
We use SPC (Statistical Process Control): we measure the first 10 pieces fully, then every 50th piece on the CMM, and we stop the line immediately if any dimension drifts beyond 0.015 mm.
What is the guaranteed lead time for a mixed order of hinges and knobs?
For any mixed order under 2,000 total pieces, we guarantee 7 working days from drawing approval to shipment, or we pay a 2% penalty per day of delay.
For hinge pin alignment, we recommend reviewing our CNC cutting tool selection guide to understand how tool geometry affects bore finish. If you are designing a new hinge with tight clearance, our CNC machining tolerances guide explains how to call out GD&T without over-specifying.
Send us your drawing today for a firm quote within 12 hours. Email the PDF or STEP file to sc@bquq.com or WhatsApp +86 13713157787. We will reply with a unit price, tooling cost (if any), and a confirmed delivery date. No MOQ, no obligation.
