Description
Claws for DN 160 – DN 250 ISO-K with short bolts M10 x 35 are fastening components for larger ISO-K vacuum flange connections covering the DN 160 to DN 250 size range. They clamp mating ISO-K flanges using short M10 x 35 bolts, supporting secure assembly of vacuum chambers, transfer lines, and laboratory vacuum equipment at these nominal diameters. Intended as accessories and spare parts for laboratory apparatus, the claws serve installation, servicing, and replacement tasks where ISO-K claw clamps with short M10 bolts are required. The short-bolt design addresses flange interfaces with restricted space while maintaining alignment of the joint under normal laboratory vacuum service. Supplied as one piece from manufacturer WELCH, each claw is identified by DN range and bolt size to simplify matching with existing ISO-K hardware. Typical uses include modular vacuum sections, pump and chamber interfaces, and research or process setups built on standardized ISO-K flange technology. Selecting the correct claw and bolt combination supports consistent flange seating and straightforward integration into established vacuum system layouts during build or maintenance work.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Product type: Claws for ISO-K flanges
- Flange range: DN 160 - DN 250
- Bolt specification: Short bolts M10 x 35
- Connection standard: ISO-K
- EAN: 4046681089800
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Questions about Claws for DN 160 - DN 250 ISO-K with Short Bolts, M10 x 35
What is this article?
Claws for DN 160 - DN 250 ISO-K with Short Bolts, M10 x 35 is the article on this page. Luminix Health distributes WELCH for laboratory use. It sits in Hose connectors, adapters & fittings, inside Tubing, hoses & fittings, in Labware.
A hose connector or adapter joins two lines, or steps one bore down to another. The barb diameter has to match the tube, and the thread has to match the stopcock or the bottle. Most leaks are a mismatch here, not a hole in the tube.
Tubing is how a liquid or a gas moves between two vessels without being poured. Silicone stays flexible and survives repeated autoclaving. PTFE resists almost every solvent and is stiff. PVC is the ordinary flexible line for water and for mild aqueous work. The fitting, not the tube, is what usually leaks: the barb, the thread and the stopcock have to match the tube bore. Glass and plastic apparatus around these lines is indexed under ISO laboratory ware.
Which category should I open next?
The category is Tubing, hoses & fittings. The sub-category is Hose connectors, adapters & fittings. The catalogue is Labware.
Shelves beside this one are PVC, PTFE & other tubing, Stopcocks & valves, Silicone tubing and Tubing accessories.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
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Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

