PARTS IN 1-3 DAYS
Quick-Turn Machined Parts
We don’t have minimums, we deliver the best parts for your money, and meet your deadlines!
Every job is unique, and many require special considerations for materials, finishing, custom work, or urgent delivery – your commercial quote will be turned around by seasoned estimators who confirm all aspects of your job.
“We are extremely happy with the quality of parts
received as well as the level of service…Thanks!”
–Micah H., VP Product Development
“Finding Prototek by chance was like hitting
the Strategic Sourcing Easy Button.”
– Brian H., Senior Designer
“On time and to Spec. To EVERYONE involved
producing quality parts a hearty thanks.”
– Jim T., Senior Product Engineer
“Fastest quoting & delivery I’ve ever
experienced, & the parts look great!”
– John H., Lead Mechanical Engineer
Amazing companies choose PROTOTEK for high-quality parts done fast!
Licenses, certifications
and real machining service
and real machining service
Expertise and quality are paramount. With more than three decades of experience in commercial machined parts, we’ve achieved a rich set of certifications and provide high-touch attention and service to every quote – and every job.
We engage with our customers to help them design better and more cost-effective parts. We want to be your one-stop shop for commercial sheet metal fabrication. Most of our business is from returning customers, and to achieve that, we strive to hit our customer’s deadlines across all project types.
Machined Parts – Working with PROTOTEK
Deep capabilities in commercial sheet metal and machining – design, sheet metal fabrication, manufacturing, finishing, and even challenging assemblies.
What do we do?
- Sheet Metal Parts & Assemblies in 1-3 Days
- CNC Milled and Turned Parts in 1-3 Days
- Additive Manufactured Parts in 1 – 3 Days
- Expedited Jobs
About our fast, flexible, personalized service:
- ISO-9001:2015 Certified, ITAR Registered
- Quotes within 24 Hours
- Contact us about our expedited services
Our machined parts capabilities start below but they don’t stop there. Want to talk to someone about a job, upload a file for quote or call us now.
QUOTES WITHIN 24HRS
We accept these file types STP, PRT, IGS, DXF, STL, and more!
PARTS & ASSEMBLIES – ONE STOP SHOP
NO ORDER TOO SMALL
EXPEDITED PARTS IN 1-3 DAYS
Prototek's In-house Capabilities
Sheet Metal
- Manufacturing Design Assistance
- Laser Cutting - Punching
- Material Graining
- Drilling - Countersinking - Tapping
- Forming - Bending
- Hardware Insertion
- Mechanical Assembly
- TIG, MIG, Spot Welding & Weld Grinding
- Welded Assemblies & Frames
Machining
- Up to 5-Axis Milling
- Horizontal & Vertical Milling
- 9-Axis Mill-Turn
- Turning
- CNC Routing
- Surface Grinding
- Lapping & Polishing
- Welding / Post-Weld Machining
- Heli-Coils / Hardware Inserts
Cutting & Engraving
- Wire & Sinker EDM Cutting
- Waterjet Cutting
- CO2 Laser
- Fiberoptic
Quality Assurance
- Quality Engineering Assistance
- CMM Inspection Services
- First Article and AQL Inspections
- Compliance and Document Control
Plastic & Composite Fabrication
- Plastic Thermoforming - Bending
- Annealing
- Cryogenic Deflashing & Deburring
- Plastic Welding
- Thermal, Adhesive, & Mechanical Bonding
- Vapor Polishing
- Radiological Film-Cutting Services
Assembly
- Manufacturing Design Assistance
- Tooling and Fixture Fabrication
- Electro-Mechanical Services
- Welded, Mechanical, & Small Parts Assembly
- Wire Harnessing
- Laser Cutting – Polymers & Metals
- Insert Installation
Finishing
- Powder Coating
- Painting
- Chemical Agent Resistant Coating
- Silk Screening
- Laser Engraving
- Chem Film
- Anodizing
- Black Oxide
- Bead Blasting
- Tumbling
Additive Manufacturing
- Laser Sintering
- Multi Jet Fusion
- Stereolithography
- Digital Light Processing
- Fused Filament Fabrication
- Material Jetting
- Cast Urethane
Guide to Custom Machined Parts
Custom CNC machining services are a cost-effective and efficient way to have custom parts created. CNC milling and turning machines have made it easier than ever to create parts out of almost any material and customize them with a variety of features and shapes.
CNC Machining, Milling and Turning for Machined Parts
Computer Numerical Control (CNC) machining is a manufacturing process for machined parts in which factory equipment and machinery are controlled by pre-programmed computer software. It can be used to operate a wide variety of complex machinery, including grinding, routing, milling and lathing. Three-dimensional cutting tasks can be completed in a single set of prompts with CNC machining. CNC machining is commonly used for creating custom milled and turned parts.
Milling parts is the process of machining using rotary cutters to remove material by advancing a cutter into a workpiece. This method is very flexible and can be used in varying directions on one or multiple axes, cutter head speeds and pressures. Milling machines developed into “machining centers” after the introduction of CNC in the 1960’s. Machining centers are milling machines with automatic tool changers, tool magazines or carousels, CNC capacity, coolant systems and enclosures.
Turning parts, on the other hand, is a machining method in which a cutting tool, usually a non-rotary tool bit, moves more or less linearly as the workpiece rotates, describing a helix toolpath.
Live tooling for lathes and the occasional use of mills for turning operations started the introduction of milling into turning environments, and vice versa. This resulted in the creation of a new class of machine tools known as multitasking machines (MTMs), which are specifically designed to allow milling and turning within the same work envelope.
Materials Used for Machined Parts
| Machined Parts Material | Grade / Alloy | Heat Treatable | Tensile Strength (Ultimate, PSI) | Fatigue Strength (PSI) | Hardness (Brinell) | Machinability (AISI Rating) | Machined Parts Material | Grade / Alloy | Heat Treatable | Tensile Strength (Ultimate, PSI) | Fatigue Strength (PSI) | Hardness (Brinell) | Machinability (AISI Rating) |
|---|---|---|---|---|---|---|
| Aluminum | 1100-0 | No | 13000 | 5000 | 23 | 360% |
| Aluminum | 1100-H112 | No | 13000 | 4600 | 23 | 360% |
| Aluminum | 1100-H14 | No | 18000 | 7200 | 32 | 360% |
| Aluminum | 2011-T3 | Yes | 52000 | 1800 | 95 | 360% |
| Aluminum | 2011-T451 | Yes | 45000 | 11000 | 95 | 360% |
| Aluminum | 2024-0 | Yes | 27000 | 13000 | 47 | 360% |
| Aluminum | 2024-T3 | Yes | 63800 | 20000 | 120 | 360% |
| Aluminum | 2024-T351 | Yes | 57300 | 20000 | 120 | 360% |
| Aluminum | 2024-T3511 | Yes | 67000 | 18000 | 120 | 360% |
| Aluminum | 2024-T4 | Yes | 45000 | 20000 | 120 | 360% |
| Aluminum | 2024-T851 | Yes | 75000 | 20000 | 140 | 360% |
| Aluminum | 3003-H14 | No | 23000 | 8700 | 42 | 360% |
| Aluminum | 3003-H22 | No | 20000 | 10000 | 37 | 360% |
| Aluminum | 5052-0 | No | 28000 | 16000 | 47 | 360% |
| Aluminum | 5052-H112 | No | 29000 | 11000 | 55 | 360% |
| Aluminum | 5052-H32 | No | 34000 | 17000 | 60 | 360% |
| Aluminum | 5052-H34 | No | 37000 | 18000 | 68 | 360% |
| Aluminum | 5083-H112 | No | 44000 | 16000 | 75 | 360% |
| Aluminum | 5083-H116 | No | 47000 | 23000 | 83 | 360% |
| Aluminum | 5086-H111 | No | 40000 | 15000 | 65 | 360% |
| Aluminum | 5086-H112 | No | 39000 | 14000 | 69 | 360% |
| Aluminum | 5086-H116 | No | 44000 | 22000 | 81 | 360% |
| Aluminum | 6020-T8 | Yes | 43900 | N/A | 100 | 360% |
| Aluminum | 6061-T6 | Yes | 45000 | 14000 | 93 | 360% |
| Aluminum | 6061-T651 | Yes | 46000 | 14000 | 93 | 360% |
| Aluminum | 6061-T6511 | Yes | 42000 | 15000 | 95 | 360% |
| Aluminum | 6063-T52 | Yes | 25000 | 9700 | 60 | 360% |
| Aluminum | 6262-T9 | Yes | 57000 | 13000 | 120 | 360% |
| Aluminum | 7050-T7451 | Yes | 76000 | 30000 | 140 | 360% |
| Aluminum | 7050-T7651 | Yes | 80000 | 31000 | 147 | 360% |
| Aluminum | 7075-T6 | Yes | 83000 | 23000 | 150 | 360% |
| Aluminum | 7075-T651 | Yes | 80000 | 23000 | 150 | 360% |
| Aluminum | 7075-T73 | Yes | 72000 | 23000 | 140 | 360% |
| Aluminum | 7075-T7351 | Yes | 73000 | 24000 | 140 | 360% |
| Aluminum | 7475-T7351 | Yes | 72000 | 28000 | 135 | 360% |
| Aluminum | K100-S | No | 41000 | N/A | 70 | 450% |
| Aluminum | M-1 | No | 42900 | N/A | 85 | 450% |
| Aluminum | MIC-6 | No | 23900 | N/A | 65 | 450% |
| Bearing Bronze | C93200 | No | 34800 | 16000 | 65 | 70% |
| Brass | C26000 | No | 46000-99000 | 14000 | 210 | 30% |
| Brass | C36000 | No | 4800-77000 | 16000 | 78 | 100% |
| Brass | C46400 | No | 55000 - 88000 | 14500 | 82 | 30% |
| Bronze | C31400 | Yes | 40000-60000 | N/A | 56-59 | 80% |
| Carbon Steel | A36 | Yes | 80000 | N/A | 119-159 | 72% |
| Copper | C11000 | No | 25000-29000 | 11000-17000 | 82-92 | 60% |
| Copper | C14500 | No | 47900 | 13000 | 60-130 | 85% |
| Phosphor Bronze | C54400 | No | 47000-100000 | N/A | N/A | 80% |
| Silicon Aluminum Bronze | C64200 | No | 75000-102000 | 50000 | N/A | 60% |
| Stainless Steel | 15-5PH | Yes | 115000-190000 | 95000-160000 | 255-388 | 45% |
| Stainless Steel | 17-4PH | Yes | 115000-190000 | 75000-90000 | 255-388 | 45% |
| Stainless Steel | 17-7PH | Yes | 170000 | 42000 | 180 | 75% |
| Stainless Steel | 303 | Yes | 87000-100000 | 33000-52000 | 170-210 | 75% |
| Stainless Steel | 304 | Yes | 84000-170000 | 30000-63000 | 170-360 | 40% |
| Stainless Steel | 304L | Yes | 78000-170000 | 25000-62000 | 160-350 | 40% |
| Stainless Steel | 316 | Yes | 76000-170000 | 30000-63000 | 160-360 | 36% |
| Stainless Steel | 316L | Yes | 77000-170000 | 25000-65000 | 170-350 | 36% |
| Stainless Steel | 321 | Yes | 85000-10000 | 32000-40000 | 170-210 | 36% |
| Stainless Steel | 347 | Yes | 89000-100000 | 32000-40000 | 160-201 | 36% |
| Stainless Steel | 410 | Yes | 76000-110000 | 28000-50000 | 190-240 | 54% |
| Stainless Steel | 416 | Yes | 75000-120000 | 33000-50000 | 230-320 | 50% |
| Stainless Steel | 420 | Yes | 100000-250000 | 33000-97000 | 190 | 50% |
| Stainless Steel | 420F | Yes | 110000 | 39000 | 230 | 68% |
| Stainless Steel | 430 | Yes | 75000 | 45000 | 160 | 66% |
| Stainless Steel | 430F | Yes | 79800 | 30000 | 170 | 75% |
| Stainless Steel | 440C | Yes | 100000-290000 | 38000-120000 | 222 | 40% |
| Steel | 1018 | Yes | 63000-70000 | 26000-38000 | 130-140 | 78% |
| Steel | 1045 | Yes | 90000-98000 | 33000-53000 | 180-190 | 57% |
| Steel | 1215 | Yes | 78300 | N/A | 167 | 136% |
| Steel | 4140 | Yes | 100000-160000 | N/A | 200-310 | 66% |
| Steel | 11L17 | Yes | 86300 | N/A | 179 | 9% |
| Steel | 12L14 | Yes | 78300 | 28000-41000 | 163 | 198% |
| Titanium | 6AL-4V | Yes | 131000 | 74000 | 334 | 22% |
| Titanium | 6AL-4V ELI | Yes | 125000 | 20300 | 326 | 22% |
| Titanium | 3Al 2.5 | No | 89900 | 24700 | 256 | N/A |
Types of Milling Involved with Machined Parts
One of the advantages of milling in the machining of parts is its versatility. There are many types of milling that can create a diverse range of custom milled parts.
-
Machined Parts with 3-Axis Machining
When cutting involves synchronized coordinated movement of the X, Y, and Z axes, 3-axis milling is used.
-
Machined Parts with 4-Axis Machining
This method is one of the most popular milling techniques because it’s more advanced and versatile than 3-axis milling but less costly than 5-axis machining. There are two options: four-axis simultaneous interpolation or four-axis positioning. The fourth axis will reposition the part between three-axis operations but does not shift during the machining.
-
Machined Parts with 5-Axis Machining
5-Axis Machining rotates a tool along the X, Y, and Z axes and the A and B axes, allowing the machine to reach a workpiece from either direction.
-
Machined Parts with 9-Axis Machining
The 9-axis CNC machine combines lathe and 5-axis machining. The component can be turned, and multi-axis milled in one setup thanks to its nine usable axes. The removal of manual loading and secondary fixtures is the most significant advantage of this machine. A 9-axis CNC mill can quickly complete a part from start to finish.
-
Machined Parts with Horizontal Machining
The spindle on horizontal milling machines has a horizontal orientation. Horizontal milling machines selectively extract material from a stationary workpiece by mounting the cutting tool on a horizontally oriented spindle.
-
Machined Parts with Vertical Machining
A vertical milling machine, the most common machine, has a vertically oriented spindle that both holds and rotates the cutting tool against the stationary workpiece. The spindle will go up and down when removing material from the workpiece by pushing against it.
Custom CNC Turning for Machined Parts
CNC turned parts can easily be customized with a variety of features:
-
Shapes:
There are a variety of insert shapes for turning, each with its own purposes and ideal uses. Insert shapes range from a perfect circle to a diamond shape. The ideal shape will depend on the part’s contours, the spindle power required to cut the material, vibrations during cutting, and the strength of the insert versus the material. A custom CNC machining shop can assess your project and materials to determine the best option.
-
Grooves:
Grooving is a term used to describe the method of creating a narrow cavity of a specific depth on a cylinder, cone, or face of a component. CNC turning machines may make grooves, which are typically used to allow another part to move within and be driven by the groove.
-
Holes:
Holes can be added to custom milled or turned parts, including standard holes, threaded holes, and even key inserts.
Contact us for your machined parts needs.
Prototek
215 Devcon Dr.
San Jose, CA 95112
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Sac EDM a Prototek Company
11341 Sunrise Park Dr.
Rancho Cordova, CA 95742
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Midwest Prototyping a Prototek Company
1100 W 120th Ave #100
Westminster, CO 80234
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Prototek
900 Cheyenne Ave.
Grafton, WI 53024
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Midwest Prototyping a Prototek Company
10949 Blackhawk Dr
Blue Mounds, WI 53517
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Prototype Solutions Group a Prototek Company
1621 Indianhead Drive
Menomonie, WI 54751
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Prototek
205 Pine St.
Contoocook, NH 03229
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Prototek
244 Burnham Intervale Rd.
Contoocook, NH 03229
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ProtoCAM A Prototek Company
6620 Grant Way
Allentown, PA 18106
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Prototek Trending Topics
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Frequently Asked Questions
Are you a broker or a manufacturer?
We are a full service sheet metal and machining manufacturer with four U.S. production facilities across the nation allowing us to deliver your high-quality parts FAST.
Does PROTOTEK manufacture in higher-volume quantities?
We focus on prototypes to low-volume production and can do larger runs. All our parts, from one – to 100 – to 1,000+ are always delivered with production-quality finish.
What are your payment terms?
PROTOTEK offers Net 30 payment terms for established customers with good credit.
What file formats are required or suggested for requesting a quote?
We accept .STP, .DWG, .IGS, .PDF, Parasolid files, and more.
What if I need help with my part design?
Our estimators are on hand to discuss your specific job needs. Our expert team can help you move your project smoothly through the design process and on to delivery.
If I do not have a CAD model, can you quote/fabricate my parts?
Yes, we can work directly from your drawings. Additional engineering charge (NRC) may apply depending on complexity.
How do I submit my NDA and other document requests?
Submit your NDA, Approved Vendor and other document requests to your sales rep or estimator.
How long is a quote valid?
Our quotes stand firm for 7 days from the date of issue.
How fast can I get my order?
Lead time for standard orders is 10 business days. Expediting options are available, including emergency service – down to as fast as 1-2 business days, depending on complexity of work and materials.
