Round Flange Body in 6061 with Multi Step H12/H13 Bore Cluster
6061 optical body flange base, part 731270.010: Ø32 H13, Ø31 H12, Ø20.5 JS13, Ø18.5 H13 bore cluster, T 0.01 B profile, flatness and parallelism 0.03, black anodized. Quote in 24 hours.
Semiconductor & Optics
A round flanged body base for semiconductor and optical communication equipment, with a multi step center bore cluster at H12/H13 classes and strict profile control.
Or email drawings to kgl@kglmfc.com
Key Specifications
| Parameter | KGL Capability |
|---|---|
| Material | Aluminum 6061, black anodized |
| Process | CNC milling of body and faces, CNC turning and boring of the center cluster, deburring, black anodize |
| Bore cluster | Ø32 H13 (-0.039), Ø31 H12 (-0.25/-0.27), Ø20.5 JS13 (+/-0.165), Ø18.5 H13 (-0.033) |
| Geometric control | Profile T 0.01 B; flatness and parallelism 0.03 B |
| Threads and holes | M2 pattern, Ø4.5 mounting holes |
| Inspection | Dimension, geometric tolerance, and appearance inspection |
| Tolerance | ±0.005 mm standard on metals, engineering plastics, and carbon fiber composite |
| Certifications | ISO 9001:2015, ISO 13485:2016, AS9100D |
| Capacity | 100+ CNC machines including 11 five-axis centers |
| MOQ | No MOQ; 1-piece prototypes supported |
| Quote | Within 24 hours for complete 2D/3D files |
About This Part
This flanged circular body is the mounting core of an optical or optoelectronic module. The center carries a stepped bore cluster, Ø32 H13, Ø31 H12, Ø20.5 JS13, and Ø18.5 H13, so each mating part seats to its own class without stack up surprises. Profile runs T 0.01 B on the controlled surface, with flatness and parallelism at 0.03 B.
Around the flange ears sit M2 threads and Ø4.5 mm mounting holes. Black anodize gives the corrosion and appearance finish, with bore classes protected or finished after oxidation where fits demand it.
Process is aluminum blanking, CNC milling of the body and faces, turning and boring of the center cluster, bench deburring, black anodize, then dimension, geometric, and appearance inspection with packaging. Drawing YB19 20260908 3/19 sheet 21.
This part family supports the Optical / Semiconductor Parts industry. Read how KGL machines parts for that sector, then send your drawing for a quote.
Why Machine It at KGL
Five-Axis Fleet
100+ CNC machines including 11 five-axis centers run complex geometry in single setups, so tolerances do not stack up across refixturing.
Verified Accuracy
±0.005 mm standard on metals, plastics, and carbon fiber composite, verified on Hexagon and Zeiss CMMs (0.0015 mm accuracy).
Fast Prototypes
Engineering feedback with every quotation; prototype parts typically machined in 15 to 25 days.
One Supplier, End to End
Material sourcing, machining, heat treatment coordination, finishing, CMM inspection and export packaging under one roof.
Part-Specific Advantages
- Stepped bore cluster Ø32 H13, Ø31 H12, Ø20.5 JS13, Ø18.5 H13
- Profile T 0.01 B, flatness and parallelism 0.03 B
- Flange ear M2 threads and Ø4.5 mm mounting holes
- Black anodize with bore class protection
- Semiconductor and optical communication mounting duty
Typical Applications
- Optical module body bases and mounting flanges
- Optoelectronic equipment structural cores
- H class bore housing parts
Commercial Terms
| Commercial | Detail |
|---|---|
| MOQ | No MOQ; 1-piece prototype supported |
| Quote | Within 24 hours for complete 2D/3D files |
| Terms | EXW / FOB Shenzhen |
| Certifications | ISO 9001:2015 |
| Packaging | Individual bubble wrap, export carton or wooden case |
| Lead Time | Prototypes 7 to 15 days; production scheduled by volume |
Common Questions
What do the H classes mean for my assembly?
H12 and H13 are standard sliding classes for housings. Each bore is bored to class and gauged, so the mating part fits by specification instead of by selection.
Does the black anodize move the bores?
Controlled bores are masked or finished after oxidation. That is how the H class survives the finish.
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