Description
BOLA cylinder head screws M 4 × 30 mm are PTFE fasteners similar to DIN 84 / DIN EN ISO 1207 for laboratory assemblies that need non-metallic, chemically resistant screws. The thread is M 4 with a pitch of 0,7 mm, a usable length of 30 mm and a cylindrical head measuring 7,0 mm diameter by 4,0 mm height. Manufactured from polytetrafluoroethylene (PTFE), the screw is intended for fixtures, apparatus frames and equipment points where metal fasteners are undesirable or where inert contact surfaces are preferred. Geometry follows the stated BOLA dimensions for predictable engagement in matching M 4 threads. Supplied as a single piece from manufacturer Bohlender, the item fits targeted replacements and small builds in research and technical laboratories. Net weight is 0,0008 kg. These cylinder head screws support secure fastening in chemically aggressive or contamination-sensitive laboratory environments while remaining fully polymeric throughout the head and shank.
This article is part of Other lab tools & accessories, in Tools & accessories.
Key features
- Pack size: 1 pc
- Brand: BOLA
- Material: Polytetrafluoroethylene (PTFE)
- Thread size: M 4
- Pitch: 0,7 mm
- Usable length: 30 mm
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Questions about BOLA Screws with Cylindrical Head, M 4 x 30 mm PTFE
What is this article?
BOLA Screws with Cylindrical Head, M 4 x 30 mm PTFE is the article on this page. Luminix Health distributes Bohlender for laboratory use. It sits in Other lab tools & accessories, inside Tools & accessories, in Labware.
This shelf is the bench tools that do not belong to a narrower rack: odd holders, small aids, pieces that complete a setup. The useful check is what the tool touches, and whether that contact adds a contaminant.
The small tools of the bench are what the hand actually holds: a spatula for a powder, forceps for an object that must stay clean, a brush for a narrow neck, a desiccator when a dried sample must not take up water again. None of these reads a measurement. They keep the measurement possible. The apparatus around them is listed under ISO laboratory apparatus.
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The category is Tools & accessories. The sub-category is Other lab tools & accessories. The catalogue is Labware.
Shelves beside this one are Spatulas & spoons, Lab furniture, trolleys & storage, Tweezers & forceps, Scissors, scalpels & dissecting instruments, Weighing boats, dishes & paper, Desiccators & desiccant, Grease, boiling stones & sealants, Timers, stopwatches & calculators, Stationery, books & lab notebooks, Brushes & cleaning tools, Stirring rods, spreaders & glass tools, Cutting & sealing tools and Gas handling & burners accessories.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

