Description
Double cross/combination bosshead for rods up to 20 mm is a versatile laboratory clamp component manufactured from zinc die-cast with a durable powder-coated finish. It provides four distinct clamping possibilities, allowing secure attachment of rods and apparatus in multiple orientations on retort stands and scaffolding. The maximum clamping span of 20 mm accommodates standard laboratory rods while the powder-coated zinc construction offers mechanical strength and corrosion resistance for everyday bench use. This bosshead from manufacturer Usbeck is designed for reliable fixation in chemistry, biology and physics laboratories where stable multi-directional connections are required. With a net weight of 0,165 kg it remains easy to handle yet robust enough for repeated assembly and adjustment. The combination design supports both cross and parallel clamping configurations, making it a practical accessory for building custom support frameworks. Supplied as a single piece, the unit integrates readily into existing laboratory stand systems.
This article is part of Clamps & bossheads, in Stands, clamps & racks.
Key features
- Pack size: 1 pc
- Product type: Double cross/combination bosshead
- Max rod diameter: 20 mm
- Clamping options: 4
- Material: Zinc die-cast, powder-coated
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Questions about Double Cross Bosshead, Multi-Purpose 20 mm
What is this article?
Double Cross Bosshead, Multi-Purpose 20 mm is the article on this page. Luminix Health distributes Usbeck for laboratory use. It sits in Clamps & bossheads, inside Stands, clamps & racks, in Labware.
A bosshead grips the rod. A clamp grips the flask or the condenser, usually through two jaws with cork or vinyl faces. Three-finger and two-finger clamps hold different shapes. The jaw opening is the specification.
A stand, a clamp and a rack hold something still so the hands can do the work. A bosshead locks a clamp to a rod. A test-tube rack keeps tubes upright and in an order the operator can read back. The failure is almost always mechanical: the clamp slips, or the rack does not match the tube diameter. The glass they support is indexed under ISO laboratory glassware.
Which category should I open next?
The category is Stands, clamps & racks. The sub-category is Clamps & bossheads. The catalogue is Labware.
Shelves beside this one are Test tube racks, Stands, rods & bases and Stand & rack 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.
How does ordering and shipping work?
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.

