CNC Machining: Maximum Extents

Find the maximum extents of plastic and metal materials available for CNC milled and turned parts.

Our CNC machining service provides the ability to easily add threaded features to milled and turned parts. Threads are specified within our automated interactive quotes. When a quote is returned, the 3D display will show which thread types are possible for each feature. Different threads (where possible) or no threads can be selected on a feature-by-feature basis. View a demo quote to explore a 3D model with threads. For those having trouble with the interactive display, a 3D PDF is included in the demo quote that shows the thread options available.

After an order is placed, an order confirmation will be emailed with the thread sizes selected. Please review the order confirmation for accuracy. We offer a limited selection of UNF, UNC, and coil and key inserts (but do not supply or install the inserts). See the table below for all of our available selections.

Milled vs. Turned Parts
Threaded holes on milled parts must be modelled at the proper diameter and oriented along one of the three primary axes. Automatic external threads are not available for milled parts at this time. Keep in mind that it is possible (but not recommended) to obtain external threads on milled parts, but in this case, the threads must be modelled. External threads are machined using our standard ball and flat end mills. The smallest external thread that produces reasonable results in our CNC milling process is roughly 1/2-13 (M12). Threaded holes on turned parts must be modelled at the proper diameter and oriented axially or radially. External threads are available on the axial diameters of turned parts. Simply model the nominal diameter—do not model the threads.

Please Note:

  • We may thread a through hole or continuous outer diameter from either side of the part. If the depth of the hole or length of the outer diameter is deeper than our tools can reach, we will offer to thread both ends of the feature. It should be assumed these threads will not be continuous. See the Maximum Reach tab on the table below.
  • All threads will be right handed. Left handed threads, and diameter and pitches not shown in the table cannot be produced with our machining processes at this time.
  • We may be unable to thread features that are obstructed by other elements on a part or that are obstructed by our fixturing. If a feature cannot be threaded, no thread options will be offered for that feature on the quote.
  • Threaded features are not available for parts loaded in the .STL format.

Threading options differ for milled and turned parts, so make sure the right process is selected in the table below. If you have any issues or questions please contact an applications engineer at [email protected] or +44 (0) 1952 683047.

Material Maximum Extents
ABS Max. Depth: 95mm
Acetal Copolymer TECAFORM AH or ERTACETAL C Max. Depth: 95mm
Acetal Copolymer SUSTARIN C FDA Max. Depth: 44mm
Acetal Homopolymer TECAFORM AD or ERTACETAL H Max. Depth: 76mm
Acetal Static Dissipative Tecaform AH SD Max. Depth: 44mm
HDPE TECAFINE PE Max. Depth: 95mm
Nylon 6 TECAST TM Max. Depth: 95mm
Nylon 6 TECAST T - Natural Max. Depth: 95mm
Nylon 6 SUSTAMID 6 FR Max. Depth: 44mm
Nylon 6 GF 30% TECAMID 6 GF30 Max. Depth: 44mm
Nylon 66 TECAMID 66 Max. Depth: 95mm
Nylon 66 GF 30% TECAMID 66 GF30 Max. Depth: 95mm
PBT GF 30% TECADUR PBT GF30 Max. Depth: 69.85mm
PC TECANAT Max. Depth: 95mm
PEEK TECAPEEK Max. Depth: 44mm
PEI Ultem 1000 Max. Depth: 44mm
PEI 30% GF Ultem 2300 TECAPEI Max. Depth: 44mm
PET TECADUR PET Max. Depth: 95mm
PMMA Acrylic TECACRYL Max. Depth: 95mm
PP Homopolymer TECAFINE Beige Max. Depth: 95mm
PP Homopolymer TECAFINE Natural Max. Depth: 69.85mm
PPSU Radel R 5500 Max. Depth: 45mm
PSU Polysulfone PSU 1000 Max. Depth: 44mm
PTF Teflon TECAFLON Max. Depth: 44mm
PVC TECAVINYL Max. Depth: 95mm
Aluminium 6082-T651 Max. Depth: 95mm
Aluminium 7075-T651 Max. Depth: 95mm
Aluminium 2024-T351 Max. Depth: 69.85mm
Brass Cz112 60/40 Max. Depth: 95mm
Carbon Steel EN8/C45  Max. Depth: 44mm
Copper C101 Max. Depth: 44mm
Mild Steel S275 Max. Depth: 44mm
Stainless Steel 17-4 PH Max. Depth: 44mm
Stainless Steel 304/304L Max. Depth: 44mm
Stainless Steel 316/316L Max. Depth: 44mm
Titanium Ti-6Al-4v, Grade 5 Max. Depth: 44mm

 

Material Maximum Extents
Aluminum 6082-T651 75mm
Aluminum 7075-T651 75mm
Brass Cz121 75mm
Carbon Steel EN8/ C45 75mm
Mild Steel S275 75mm
Stainless Steel 17-4 PH 75mm
Stainless Steel 304/304L 75mm
Stainless Steel 316/316L 75mm
Titanium Ti 6Al-4V, Grade 5 75mm