Description
BOLA replacement nuts Ø 4 mm are PTFE-glass fibre fastening parts for fittings, valves and stopcocks. Made from glass-fibre-reinforced polytetrafluoroethylene, they serve as spare nuts in laboratory tubing and fluid-connection assemblies. Manufacturer data specify fitting thread M 14 x 2 for hose outer diameters from 4 to 6,35 mm, so one nut series covers several common tubing sizes on the same thread. Net weight is 0,005 kg per nut. Supplied in a pack of 5 pieces from manufacturer Bohlender within the BOLA range, these nuts restore thread engagement when original fasteners are worn or missing. The PTFE-glass fibre build keeps material continuity with matching BOLA fittings, valves and taps that use the same M 14 x 2 interface. Dimensional alignment to the stated thread and the 4–6,35 mm hose outer-diameter window supports direct replacement during assembly or service. Use them wherever BOLA-compatible M 14 x 2 connections need a new nut without changing the overall geometry of the hose joint.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 5 pc(s)
- Material: PTFE-glass fibre
- Hose outer diameter: 4–6,35 mm
- Fitting thread: M 14 x 2
- Suitable for: Fittings, valves and stopcocks
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Questions about BOLA Replacement Nuts, Ø 4 mm glass-fibre reinforced PTFE
What is this article?
BOLA Replacement Nuts, Ø 4 mm glass-fibre reinforced PTFE is the article on this page. Luminix Health distributes Bohlender 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.
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.

