STAINLESS STEEL WORM GEAR HOSE CLAMPS DIN 3017

Worm Gear Hose Clamps DIN 3017 — A worm-drive hose clamp built to DIN 3017, the German standard that sets out the band, housing, and screw-thread construction for this style of clamp, ensuring a consistent, predictable tightening mechanism and band width across manufacturers. Turning the screw engages the worm thread with slots or ridges pressed into the band, drawing it tighter around the hose or ducting with each turn, which allows the clamping force to be precisely adjusted, checked, and re-tightened over the life of the connection — unlike a single-use crimped ferrule or cable tie. That adjustability is why worm gear clamps are used to secure hoses onto pipe stubs and spigots, retain flexible ducting, and hold pipe connections across automotive, marine, industrial, and general engineering work, wherever a joint may need periodic servicing, inspection, or re-tightening rather than being fitted once and left. Functionally, this is the same clamping principle as a Jubilee® branded clip, but manufactured as a standard generic alternative rather than under that trademark. As with other stainless worm gear clamps, where both grades are offered, the choice between A2 and A4 stainless usually comes down to the environment: A2 is generally adequate for indoor, dry, or general workshop use, while A4 is the safer specification for marine, washdown, coastal, automotive underbody, or chemically exposed applications, where the housing and screw mechanism — not just the band — need to resist corrosion over the working life of the clamp. Choosing the correct size means selecting a clamp whose adjustable diameter range comfortably covers the outer diameter of the hose once it's fitted over the connection, with enough spare adjustment for the hose to compress slightly under clamping force and for any variation in hose wall thickness between batches; too narrow a range leaves no margin to retighten as the hose settles or ages.

FAQs
What's the difference between this and a Jubilee® branded clip?
Functionally they work the same way, using a worm-drive screw to tighten a slotted band; Jubilee is a specific trademarked brand, while a DIN 3017 clamp is the generic standard equivalent — the two are usually interchangeable in application but aren't the same manufactured product.

Should I choose A2 or A4 stainless for a marine or automotive application?
For marine, washdown, or automotive underbody use, A4 is the safer choice given sustained moisture and salt exposure; A2 is generally suitable for dry, indoor, general-purpose fixing.