China Customized Precision CNC Machining Parts
CNC Machining Tolerances
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Maximum Part Size |
General Tolerances |
Precision Tolerances |
Minimum Feature Size |
| Milled parts up to 80” x 48” x 24” (2,032 x 1,219 x 610 mm). Lathe parts up to 62” (1,575 mm) length and 32” (813 mm) diameter. | Tolerances on metals will be held to +/- 0.005" (+/- 0.127 mm) in accordance with ISO 2768 unless otherwise specified. Plastics and composites will be +/- 0.010”. | TONGBAO can manufacture and inspect to tight tolerances per your drawing specifications including GD&T callouts. | 0.020” (0.50 mm). This may vary depending on part geometry and chosen material. |
Main Materials
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Metal CNC Machining Materials |
Type |
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Aluminum Alloys |
Aluminum 6061 |
Aluminum 5052 |
Aluminum 2024 |
Aluminum 6063 |
Aluminum 7050 |
Aluminum 7075 |
Aluminum MIC-6 |
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Copper Alloys |
Copper 101 |
Copper C110 |
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Bronze Alloys |
Copper C932 |
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Brass Alloys |
Copper 260 |
Copper 360 |
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Stainless Steel Alloys |
Nitronic 60 (218 SS) |
Stainless Steel 15-5 |
Stainless Steel 17-4 |
Stainless Steel 18-8 |
Stainless Steel 303 |
Stainless Steel 316/316L |
Stainless Steel 416 |
Stainless Steel 410 |
Stainless Steel 420 |
Stainless Steel 440C |
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Steel Alloys |
Steel 1018 |
Steel 1215 |
Steel 4130 |
Steel 4140 |
Steel 4140PH |
Steel 4340 |
Steel A36 |
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Titanium Alloys |
Titanium (Grade 2) |
Titanium (Grade 5) |
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Zinc Alloys |
Zinc Alloy |
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Plastic CNC Machining Materials |
ABS |
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Acrylic |
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Delrin (Acetal) |
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Garolite G10 |
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HDPE |
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Nylon 6/6 |
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PC (Polycarbonate) |
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PEEK |
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Polypropylene |
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PTFE (Teflon) |
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UHMW PE |
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PVC |
Surface Finish
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Surface Finish |
Effect |
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As-Milled |
Deburring, flat or smooth surface |
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Anodized |
Coloring, corrosion resistance and wear resistance |
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Passivation |
corrosion resistance |
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polishing |
Smooth surface |
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Nickel Plating |
Corrosion resistant and wear-resistant |
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Silver Plating |
Corrosion resistant and wear-resistant |
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Gold Plating |
Corrosion resistant and wear-resistant |
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Zinc Plating |
Corrosion resistant and wear-resistant |
Product Examples
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Product Name |
Picture |
Description |
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Bail Wire |
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Material：AISI 304 Length：165mm Weight：13.095g Usage：for manufacturing Color：sliver |
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Bail Rod |
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Item：B Bail Rod 21051279 Material：6061-T6，5052-H18，LY12-T4 Weight：0.0152kg Surface：Passivation Color：silver MOQ：5000pcs |
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Brass Insert |
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Item：20200628864 Material：C3604 MOQ：10000 Weight：0.0098kg Color：Yellow Size：22.98*10.92 Surface：Passivation |
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Hook |
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Weight：0.0956kg Material：can be customized Size：can be customized Surface：passivation Color：sliver，gold Usage: used for bird feeder, playing the role of hook |
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Shaft Bolt |
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Size: Customization,or non-standard as request&design Material: Stainless Steel,Alloy steel,Carbon Steel,Brass,Aluminum and So on Finish: Plain, black, zinc plated/according to your requirement |
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Part of Valve |
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Its material is aluminium and is with sealed thread inside. Material: Aluminium 6061, Weight：107g |
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Core of Valve |
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It is used for the diesel cylinder. Material: c Weight：9.4g |
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Cover of valve |
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It is used for the diesel cylinder. Material: C38500 Weight：153g |
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Threaded Sleeve |
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It is used for the diesel cylinder. Material: C38500 Weight：47g |
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Valve Part Units |
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It is uded for linking vavle、pin and thread sleeve in the diesel. Material: C38500 |
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Threaded Hook Rod |
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It is used in vehicle assembly line. Material: C38500 Weight：29g |
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Welding Gun |
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It is joint pole used for auto welding machine. Material: Red Copper Weight：140g |
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Belt Buckle |
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It is used for joining two belts. Material: 45# |
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Welding Nozzle |
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It is used in the welding torch. Material: Red Copper Specification:1.2mm |
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Metal Base |
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It is an accessory for dental light guide. Material: SS440 |
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Stud |
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It is a fastener which can be used in various machines. Material: SS304 |
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Brass Joint |
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It is a joint part for engine appliances. Material: C38500 Weight：1.4g |
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Micro Brass Pin |
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It is an accessory for the DVD set. Material: C38500 Technical Process: Cold Heading |
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Cover |
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It is an accessory for house decoration. Material: 45# Surface Nickle Plated |
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Six Point Socket |
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It is an accessory for house decoration. Material: SS303 |
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Diverter Shoe Guide Pin |
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It is a joint part for the vehicle engine. Material: 45# Carburizing Heat Treatment |
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Hook |
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It is a house appliance. Material: SS303 |
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Nut plate |
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It is a fastener for engine appliances. Material: 45# Technical Process: Mold forging + Machining |
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Bearing Washer |
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It is often applied in machines as locking part. Material: 20# |
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Eye Screw |
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It is often used in the rope. Material: 45# Technical Process: Mold forging + Machining |
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Square Pin |
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It is a positioning pin for the CNC tool carrier. Material: 1045 |
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Soldering iron Bracket |
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It is used for heating and fixation of soldering iron in process. Material: Q235 Technical Process: Stamping |
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Locking Bolt |
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It is a locking fitting for various casters. Material: Q235 Nut Material: Nylon |
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Lamp Cover |
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It is used for lamps. Material: Aluminium 6061 Technical Process: Flow Forming |
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Aluminium Tip |
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It is a fixation part for the outdoor appliances such as the pavilion. Material: Aluminium 6061 Weight：18g |
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We have too many CNC machining parts to show. If you don't find your favorite product, please contact us to customize it for you. |
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