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Band clamp buying guide: length, jaws and the lock

Updated: 22 October 2026

You are gluing a picture frame on the kitchen table, or squaring a drawer, and the sash cramps you own only push in one direction. This band clamp buying guide settles the strap before a brand: length against the outside perimeter, jaws on the flat, and nylon webbing rather than a steel framer's band. A 4 m nylon strap is the usual domestic tool, and it is not a 7 m steel band. Prices for the six listings stay on the [band clamp comparison](/hub/hand-tools/band-clamp). Peter F. checked shop and listing figures on 22 October 2026. A purchase through a link can earn a commission at no extra cost to you.

You are gluing a picture frame on the kitchen table, or squaring a drawer, and the sash cramps you own only push in one direction.

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What you are actually buying

The name covers three tools. A webbing clamp is a wide nylon strap, commonly 25 mm, with corners that pull a rectangle together. A ratchet clamp with jaws adds a cam or a screw so the tail does not creep back through the buckle. A framer's steel band is narrower, often about 10 mm, and it is meant for large frames rather than a kitchen drawer. The Neilsen CT5437 is that domestic pattern: 4 m by 25 mm, four recessed braces, and a cam and screw on the brand shop. The shop's £5.95 is not the amazon.co.uk price, so keep the size and leave the shelf figure on the comparison.

Strap length against the perimeter

Add each outside side, then the jaws and the buckle. The printed 4 m is the strap, not the biggest frame it will close. A 400 mm square is 1.6 m around the outside, so a 4 m by 25 mm nylon strap still has spare. A 1,200 mm square is already 4.8 m of timber before hardware, so a 4 m strap cannot meet itself. Lion Picture Framing states that its 7 m by 10 mm steel band covers squares up to 1,665 mm, as that seller's claim. Axminster has listed a Stanley 4.5 m strap from £11.98 when 4 m is tight. A lock that creeps opens a mitre even on a strap that looked long.

Jaws, lock, and webbing

Four corner jaws suit a frame or drawer when each one bears on the flat. If thin moulding lets the jaw rock on an arris, four jaws will not save the joint. UK Picture Framing Supplies lists the usual set at £14.47: 4 m by 25 mm nylon and four recessed braces. On a round, a hexagon, or a chair, fixed corners can lift off. Look for a cam, screw, or ratchet that holds the tail. Nylon can stretch under load. Sellers of steel say steel does not stretch like webbing. That is their claim, not a test we ran. Frame joints stay on the band clamp for picture frames page.

What the UK shelves cost

The six amazon.co.uk listings run from £9.95 to £14.99. For this sample only, budget about £10 to £15, and read that as nylon with corner jaws, not as a trade steel clamp. Lion lists the 7 m steel band at £40 excluding VAT, and All About Framing lists a matching steel description at £65.99 including VAT. UK Picture Framing Supplies' 4 m nylon at £14.47 sits near the amazon.co.uk sample. Leave the Neilsen brand-shop £5.95 off the marketplace row. Which of the six fits is on the best band clamp page.

Common questions

Is 4 m of strap enough for a picture frame?
Often, on a modest frame. Add the four outside sides, then the jaws and the buckle. A 400 mm square is about 1.6 m around and usually fits 4 m of nylon with spare. If the sides already reach about 4 m before that hardware, the strap will not close.
When does a frame need 4.5 m or a 7 m steel band?
Step up when the outside plus jaws and buckle nears 4 m. Axminster has listed a Stanley 4.5 m strap from £11.98. Lion's 7 m by 10 mm steel is stated for squares up to 1,665 mm. A small softwood frame does not need that steel because it sounds sturdier.
Do I need four corner jaws?
Yes on a rectangle, if each jaw sits on the flat. No on a round or irregular glue-up, where a fixed block lifts off. A jaw that rocks on thin moulding is a fit problem, not a shortage of jaws.
Is nylon webbing a problem because it stretches?
It can creep, so the lock matters as much as the width. On a small frame or a drawer, 25 mm nylon is still the normal buy. Sellers describe steel as the band that does not stretch like webbing. That is their claim, not a measurement from us.
What is the difference between a domestic strap and a framer's steel band on price?
These six amazon.co.uk straps run from £9.95 to £14.99. Lion's 7 m steel band is £40 excluding VAT, and All About Framing's matching description is £65.99 including VAT. The nylon clamp does not become the steel band because both are called a band clamp.
Can the same strap tie a load on a car?
No. Webbing sold to hold a mitre is not a labelled lashing for a roof rack or a trailer. If you need to restrain a load, BS EN 12195-2 is the UK reference, and it belongs to a different, marked product. Buy that rated strap for the vehicle. The frame clamp in the shed stays a frame clamp.
What should I ignore in a listing?
Ignore a 1 mm diameter beside bullets that describe 25 mm nylon, because those two sizes cannot both be the strap. Ignore a material line that says steel when the bullets say nylon, until another page agrees. Neilsen's brand-shop £5.95 is not this sample's marketplace figure.

Related pages

Sources

Sources for this comparison, last checked on 22 October 2026.

  1. GOV.UK, securing loads on HGVs and goods vehicles: the basics (retrieved 22 October 2026)
  2. GOV.UK, ways to secure a load, including lashing labels (retrieved 22 October 2026)
  3. Consumer Rights Act 2015 (retrieved 22 October 2026)
  4. Wolfcraft UK, ratchet belt clamp (retrieved 22 October 2026)
  5. Neilsen CT5437 4 m band-type corner clamp (retrieved 22 October 2026)
  6. Lion Picture Framing, 7 m frame band clamp (retrieved 22 October 2026)
  7. UK Picture Framing Supplies, 4 m strap and band clamp (retrieved 22 October 2026)
  8. ITS, band clamps (retrieved 22 October 2026)