You Searched For: Bossheads

Bossheads are essential parts to complete the laboratory retort stand construction for titration, filtration, or distillation experiments. With two screw clamps, bossheads attach to the vertical rod supported by the apparatus base and simultaneously securely hold the sample. All designs are lightweight and durable for testing longevity and come in a variety of finishes. Some are designed to fit the standard rod diameter, while others have more flexibility in sizes. Rotating designs allow any angle to be achieved.

Bossheads are essential parts to complete the laboratory retort stand construction for titration, filtration, or distillation experiments. With two screw clamps, bossheads attach to the vertical rod supported by the apparatus base and simultaneously securely hold the sample. All designs are lightweight and durable for testing longevity and come in a variety of finishes. Some are designed to fit the standard rod diameter, while others have more flexibility in sizes. Rotating designs allow any angle to be achieved.


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Supplier: VWR International
Description: Clamp is ideal for constructing lab frames or other supports requiring the connection of two perpendicular rods.

Product available on GSA Advantage®

Catalog Number: (21572-658)
Supplier: VWR International
Description: Surpass standard holding capabilities with this all-position clamp holder.

Supplier: VWR International
Description: Two Q-clamp post holders with center swivel capacity allow tilting of clamp at any angle in parallel planes.
Supplier: VWR International
Description: Features a streamlined design for maximum contamination resistance and easy cleaning.

Product available on GSA Advantage®

Catalog Number: (89084-746)
Supplier: Ace Glass
Description: This clamp holder is normally used to secure clamps to rods and lab frame supports

Product available on GSA Advantage® Small Business Enterprise


Catalog Number: (89084-750)
Supplier: Ace Glass
Description: This clamp holder is great for holding large and heavy assemblies, since it can grip rods or pipe up to 22 mm in diameter, or as small as 5 mm

Product available on GSA Advantage® Small Business Enterprise


Catalog Number: (47750-928)
Supplier: Bel-Art Products, a Part of SP
Description: This open-sided stainless steel bosshead accepts rods up to 13 mm (½") diameter.


Catalog Number: (470231-448)
Supplier: Wards
Description: A versatile clamp to securely grip a variety of cylindrically shaped glass and labware.


Catalog Number: (470165-426)
Supplier: Wards
Description: Thicker Than Normal 7 mm Threaded Clamping Screws


Catalog Number: (470137-832)
Supplier: Wards
Description: Perfect for Physics


Supplier: Wards
Description: Lab Aid, Many Uses

Catalog Number: (470165-422)
Supplier: Wards
Description: Threaded Metal One-Piece Clamping Screws


Supplier: Kemtech America
Description: Chrome plated finish with plastic-headed screws.

Catalog Number: (470165-428)
Supplier: Wards
Description: This bosshead can swivel 360°.


Catalog Number: (470137-826)
Supplier: Wards
Description: Securely holds rods at a 90 degree angle.


Catalog Number: (470137-834)
Supplier: Wards
Description: Secure laboratory equipment and apparatus at right angles.


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Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at 1-800-932-5000.
Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at 1-800-932-5000.
To process your orders without delay, please provide the required business documentation to purchase this product.

To order chemicals, medical devices, or other restricted products please provide ID that includes your business name & shipping address via email CMD_NA@vwr.com or fax 484.881.5997 referencing your VWR account number. Acceptable forms of ID are:

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  • City or County issued Business License
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  • Any other ID issued by the State that includes the business name & address

* ATTN: California Customers may require additional documentation as part of the CA Health & Safety Code. Products that fall under this regulation will be placed on a mandatory 21-day hold after documentation is received. VWR will not lift restrictions for residential shipping addresses.

-Additional Documentation May be needed to purchase this item. A VWR representative will contact you if needed.
This product has been blocked by your organization. Please contact your purchasing department for more information.
The original product is no longer available. The replacement shown is available.
This product is no longer available. Alternatives may be available by searching with the VWR Catalog Number listed above. If you need further assistance, please call VWR Customer Service at 1-800-932-5000.
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