Canister caps: DIN 45, 51, 61 and 71

What DIN 45, 51, 61 and 71 mean

The DIN designation on canisters refers to the size of the threaded opening – the number corresponds to the outer diameter of the thread in millimetres. A DIN 51 cap therefore fits any canister with a DIN 51 neck, regardless of manufacturer. The larger the opening, the faster the canister can be filled and emptied – smaller openings, on the other hand, allow more precise dosing.

Thread	Opening	Typical for
DIN 45	approx. 45 mm	small canisters (3–10 litres), precise pouring
DIN 51	approx. 51 mm	the most common size for 5–20 litre canisters
DIN 61	approx. 61 mm	medium to large canisters, quick filling
DIN 71	approx. 71 mm	large canisters from 20 litres, coarse contents

The thread your canister has is stated for every product in the canister categories, either directly in the name or in the technical data.

Matching accessories for each thread

For every DIN size we stock the complete range of accessories: taps and spouts (metal tap, AFT tap, flexible spouts in short and long, quick-pour spouts) as well as replacement lids and caps – on request with a drilled cap and cup seal for fitting a tap. When buying accessories, simply look for the same DIN number as on the canister.

Frequently asked questions

Does a DIN 51 tap fit a DIN 61 canister? No – the threads are not compatible. The exact DIN number is what counts.
Are the canisters food-safe? Our HDPE canisters are BPA-free and food-safe where stated in the product listing.
Delivered with the original seal? Canisters are delivered with an unused original cap; taps and spouts are intended as separate accessories and are fitted by the customer as required.

Order matching caps directly: Screw cap & replacement lid DIN51 · Metal tap DIN61

As of: September 2026