SCHOTT 158.340 Base — Heavy Base with 3 × M6 Thread Holes (Mounting Platform)

The SCHOTT 158.340 Base is a compact, heavy-duty mounting platform built for stable microscope/inspection illumination setups. This 2.5 lb base includes three M6 threaded holes to support brackets, columns, and positioning hardware—helping keep light guides and optical accessories steady and repeatable at the workstation.

What it is: A mounting base for illumination hardware.
What it is not: A light source or light guide.

Specifications:

Manufacturer: SCHOTT
Part number / SKU: 158.340
Configuration: Base with 3 × M6 thread holes
Weight: 2.50 lbs
Quantity option: 1 Base
Use case: Stable mounting platform for bracket/column assemblies, light-guide positioning, and inspection workstation standardization

Typical Setup (Base + Bracket + Column)

Many inspection benches use a modular build: Base to anchor the system, a mounting bracket to interface with the base, and a column sized to your stand or fixture diameter. This approach reduces “operator drift” and helps keep illumination geometry consistent across shifts.

Common compatible hardware (sold separately):

About the Manufacturer:

SCHOTT is a global technology company recognized for advanced glass, specialty materials, and optical/illumination solutions used in industrial inspection, microscopy, electronics, and life sciences. SCHOTT’s modular illumination accessories are designed to support repeatable workstation geometry—helping teams stabilize lighting setups, reduce variability, and maintain consistent inspection conditions.

Pairs Well With SCHOTT Illumination

Notes: For help selecting the right bracket/column size, illumination geometry, or a complete workstation build, open the SOSCleanroom Technical Vault tab above.

For application support, call 800-443-7101 or email Sales@SOSsupply.com.

Product page updated: Feb. 5, 2026 (SOS Technical Staff)

© 2026 SOSCleanroom.com. All rights reserved.

The Technical Vault: SCHOTT 158.340 Base (3 × M6 Thread Holes)

Vault purpose: How to use a heavy base to stabilize illumination geometry and reduce inspection variability (microscopy + machine vision workstations).

1) What the 158.340 Base does

The 158.340 is a 2.5 lb stabilizing base with three M6 threaded mounting points. Its job is to provide a repeatable, rigid anchor for mounting brackets and columns used to hold illumination hardware at a fixed position and angle.

In practice, a stable base reduces drift, vibration effects, and “hand repositioning” that can change shadowing and contrast from one inspection to the next.

2) Why mounting rigidity matters more than people think

Repeatability: fixed illumination geometry = stable pass/fail appearance
Reduced operator variation: fewer “micro adjustments” that change defect visibility
Camera consistency: improved exposure repeatability when illumination position is locked

3) Common build: Base → Bracket → Column → Illumination

Most modular stations follow this chain: Base (anchor) → Mounting bracket (interface) → Column (height/diameter match) → guide/fixture.

Examples in your catalog:

4) Threading and mounting notes (M6)

The base provides three M6 threaded holes. Confirm the fastener length and head style required by your bracket and ensure the base sits flat on the bench (no debris underneath) to prevent rocking.

Practical tip: If your inspection criteria are sensitive to reflections, lock your illumination mount and document angle + distance. Small changes can completely change the appearance of haze, scratches, and edge chips.

5) Where this fits with SCHOTT illumination

The base is commonly used to stabilize accessory positioning when paired with SCHOTT fiber optic illumination systems and light guides. For example:

ColdVision CV-LS A20980 (high control + machine-vision integration)
A08600 Universal Ringlight (uniform annular illumination)

6) Controlled-environment note

This is a hardware accessory and is not sterile and not marketed as cleanroom-certified. Use in ISO-controlled environments depends on your placement strategy and wipe-down SOP.

7) Source basis (spec traceability)