Precision Optical Mounting Seat in 6061, 0.003 mm Flatness

6061 optical mounting seat: multi pocket stepped layout, M1.6 / M2 / M3 thread field, tolerances +/-0.01 to +/-0.05, flatness 0.003, Rz 20, black anodized. Quote in 24 hours.

Black Anodized Optical Mount, 6061 with M1.6 to M3 Thread Field

Semiconductor & Optics

A compact multi cavity mounting seat for semiconductor and optical communication assemblies, with a dense small thread field and strict flatness on the seating face.

Custom to drawing±0.005 mm standard toleranceQuote in 24 hNo MOQISO 9001 · ISO 13485 · AS9100D

Request a Quote for This Part

Or email drawings to kgl@kglmfc.com

Relevant Capabilities

CNC Milling

Materials

Aluminum

Key Specifications

Parameter	KGL Capability
Material	Aluminum 6061, black anodized
Process	CNC milling of outline, cavities, and holes, deburring, black anodize
Flatness	0.003 mm on seating face
Surface	Rz 20
Threads	M1.6, M2, M3 field
Tolerances	+/-0.01 to +/-0.05 mm controlled
Inspection	Dimension, geometric tolerance, visual appearance
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

Mounting seats this dense are thread field problems: M1.6, M2, and M3 threads across stepped cavities and counterbores, with controlled dimensions from plus or minus 0.01 to plus or minus 0.05 mm. The seating face runs flat within 0.003 mm and Rz 20, which is what keeps the mounted optic square without shimming.

The part mills complete from 6061: outline, cavities, hole work, deburr, then black anodize for corrosion and optical stack appearance. Small threads are protected through finishing, and controlled dimensions verified after treatment.

Inspection covers dimensions, geometric tolerances, and visual appearance, with the flatness and the small thread classes as the sampled criticals.

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

Seating face flatness 0.003 mm, Rz 20
M1.6 / M2 / M3 thread field across stepped cavities
Controlled dimensions +/-0.01 to +/-0.05 mm
Black anodize finish with thread protection
Dense multi pocket layout in a compact footprint

Typical Applications

Optical component mounting seats in instruments
Semiconductor module bases with dense thread fields
Precision subassembly carrier plates

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

Why does 0.003 flatness matter on a mount?

An optic bolted to a face that rocks a few microns is an optic bolted in the wrong angle. Flat seating removes the shim stack from the alignment procedure.

How do M1.6 threads survive anodize?

Protected before finishing, verified after. Small threads are where oxide growth does real damage, so they are treated as controlled features.