OpeningYou send the drawing. We machine the part. You get a verified knob or handle that fits your assembly on the first try.We are BQUQ, a precision manufacturing factory in Dongg
OpeningYou send the drawing. We machine the part. You get a verified knob or handle that fits your assembly on the first try.We are BQUQ, a precision manufacturing factory in Dongguan, China. We have
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Send us your drawing / quantity / material — reply within 24h.
You send the drawing. We machine the part. You get a verified knob or handle that fits your assembly on the first try.
We are BQUQ, a precision manufacturing factory in Dongguan, China. We have run CNC lines for 20 years. Every knurled knob or handle we ship is checked against your 2D or 3D file before packing. No guesswork.
Tolerance: ±0.01 mm on critical diameters
Lead time: 7–12 days for standard batches
No MOQ – order 1 piece or 10,000
Surface finish: Ra 0.8 µm or better on request
Material: aluminum, stainless steel, brass, or free-cutting steel
This is custom CNC machining, not off-the-shelf hardware. You control the knurl pitch, the thread size, the chamfer angle, and the surface treatment.
3-axis & 5-axis CNC mills, CNC lathes with live tooling, Swiss-type lathes
Knurling
Straight, diagonal, or diamond pattern; pitch 0.5–1.5 mm; depth 0.2–0.5 mm
Threads
Metric (M3–M20), UNC/UNF, or custom; class 6H/6g
Tolerance
±0.01 mm on bores and OD; ±0.05 mm on knurl diameter
Surface finish
As-machined, anodized (clear/black), passivated, nickel-plated, or powder-coated
Batch size
1–50,000 pieces; no MOQ
Inspection
100% critical dimension check; CMM report per batch
Lead time
7 days for prototypes, 12 days for production runs
Country of origin
Made in China, Dongguan factory
We use carbide inserts for knurling to avoid material tear-out. For stainless steel, we slow the spindle and increase coolant pressure. For brass, we adjust feed rates to prevent burr formation on the knurl crests.
Three reasons buyers send us their drawings
1. Batch-traceable quality.
Every bar of material gets a heat number. Every batch gets a job card. If a part fails in your field, we trace it back to the machine, the operator, and the material lot within one hour. You get full traceability records with your shipment.
2. Inspection report per batch.
We do not just say "it's within tolerance." You receive a dimensional report with actual measured values for every critical feature – knurl OD, thread pitch diameter, concentricity, and surface roughness. For high-volume orders, we include SPC charts. This is standard, not an upsell.
3. One factory for CNC + stamping + springs + heat sinks.
Your knob might need a spring-loaded detent, a stamped retaining ring, or a heat-sink insert. Instead of managing three suppliers in three time zones, you send us one drawing package. We coordinate the processes under one roof. Fewer emails, fewer shipping delays, one invoice.
Where these parts are used
Test and measurement equipment: Knurled thumbscrews for probe fixtures and adjustable stops. The knurl gives a firm grip for gloved hands.
Industrial control panels: Handles for rotary switches and potentiometer shafts. We hold the bore tolerance so the knob presses on without wobble.
Medical device adjustment mechanisms: Small knurled knobs for torque-limited dials on surgical tables and imaging stands. We use 316L stainless and passivate per ASTM A967.
Aerospace ground support equipment: Locking handles for access panels and cable tensioners. Anodized aluminum keeps weight low, and the diamond knurl prevents slipping under oil.
Automotive aftermarket: Shift knob adapters and brake lever adjusters. We match your thread pitch exactly, so no adapter rings are needed.
Q: What is your MOQ?
A: No MOQ. We run one prototype for you at the same quality level as a 10,000-piece order. The only difference is the unit price – small batches carry a slightly higher setup cost.
Q: How do you guarantee tolerance and quality?
A: We use in-process probing on the CNC machines. After machining, we check critical dimensions on a CMM. The inspection report is included with every shipment. If a part is out of spec, we replace it at no cost – no arguments.
Q: What is the realistic lead time?
A: Prototypes ship in 7 days. Production batches of 1,000+ pieces ship in 12 days. For urgent needs, we can rush a single piece in 48 hours at an expedite fee. We quote the exact date before you approve the order.
Q: Do you provide material certificates?
A: Yes. We supply mill test certificates for the raw material, plus our own incoming inspection records. For aerospace or medical applications, we can provide full traceability documentation.
Send your drawing
Stop comparing generic catalog parts. Send us your knob or handle drawing, and we will give you a firm quote in 12 hours – including knurling cost, finish options, and a realistic delivery date.
Email your PDF or STEP file to sc@bquq.com
WhatsApp: +86 13713157787
Precision manufacturing from Dongguan, China. No MOQ. Verified quality before shipment. Your drawing is the starting point – we handle the rest.
