OST MMC Connector Adapter in Black POM, Precision CNC Milled
Black POM OST MMC connector adapter, 19 x 13 x 14.98 mm, I slot with parallelism 0.02, M2.5 6H lock thread, counterbores 17 and 3.5 mm, VMS and CMM checked. Quote in 24 hours.
Semiconductor & Optics
A 19 x 13 x 14.98 mm MMC connector adapter machined from black POM: center I shaped terminal slot with parallelism 0.02, side M2.5 6H locking thread, 17 and 3.5 mm counterbores, all edges micro deburred under magnification.
Or email drawings to kgl@kglmfc.com
Key Specifications
| Parameter | KGL Capability |
|---|---|
| Material | Black POM (polyoxymethylene), anti static clean machined surfaces |
| Process | High precision CNC milling of cube faces, I slot, M2.5 tapping, counterboring, micro deburring under magnification, ultrasonic cleaning |
| Overall dimensions | About 19 x 13 x 14.98 mm |
| I slot | Width about 3.8 / 7.6 mm, parallelism 0.02 B, symmetry 0.02 A |
| Thread | M2.5 6H, 7.8 mm deep |
| Counterbores | 17 mm and 3.5 mm diameter |
| Tolerance class | GB/T 1804-2000 f/m on molded and machined features |
| Inspection | Video measuring system, CMM, M2.5 thread plug gauge |
| 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
At 19 by 13 by 14.98 mm, this adapter is small enough that tool pressure is the main enemy. It is machined from black POM rod on a high precision milling center: the cube faces first, then the center I shaped terminal slot, the side M2.5 lock thread, and the top counterbores, each in sequence so the slot walls never see a heavy interrupted cut.
The I shaped slot is the working feature. Its B1, B2, B3 widths carry tight band tolerances per GB/T 1804 f and m classes, and the slot walls hold parallelism at 0.02 to datum B while the pattern holds symmetry at 0.02 to datum A. Slot parallelism is what decides whether the MMC terminal inserts smoothly or jams on the third cycle, so it is measured on every piece, not sampled.
POM cuts cleanly but the thin slot walls deflect under pressure, and M2.5 threads in plastic strip if the tap pulls. Threads are cut with tension taps at reduced speed and every internal corner is cleaned by hand under a microscope. Parts are ultrasonic cleaned and inspected on a video measuring system with CMM backup and thread gauges before packing.
This part family supports the 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
- Compact 19 x 13 x 14.98 mm adapter body in black POM
- Center I shaped terminal slot, parallelism 0.02 to datum B, symmetry 0.02 to datum A
- M2.5 6H side locking thread, 7.8 mm deep, for set screw clamping
- 17 mm and 3.5 mm counterbores on the top face
- Micro corner chamfers C0.2 and 4-R0.5 for clean handling
- VMS video measurement plus CMM and thread gauges on every piece
Typical Applications
- MMC connector interface adapters in test and measurement fixtures
- Insulator and terminal guide blocks in precision connectors
- Anti static machined POM components for electronic assembly equipment
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 |
Common Questions
Why black POM for a connector adapter?
POM is dimensionally stable, low friction, and naturally dissipates static better than many plastics in this class, which protects terminal contacts during insertion. Black pigment also makes the part easy to see inside dark fixtures.
How do you keep a 3.8 mm slot parallel in plastic?
Slot walls are cut in stepped light passes with sharp tools so cutting force never exceeds what the wall can carry. Parallelism is verified on the video measuring system for each piece and recorded.
Can the slot or thread be resized for our terminal?
Yes. The program takes parameter changes cleanly. Send the terminal drawing and we will quote the modified slot widths or thread size within 24 hours.
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