Buying guide
Choosing a desk cable grommet
Search “cable grommet” and you get rubber bungs for switchboards. Search “metal desk cable grommet” and you get plated zinc rings at a few dollars each. Neither is what goes in a desk you paid real money for.
This guide is about the other end: the high-end desk cable grommet — solid metal, machined, the piece you leave in the photograph. What to look for, what to avoid, and where ours fit. We make them, so read it with that in mind.
1. Solid metal, not “metal”
Most grommets sold as metal are die-cast zinc alloy — Zamak — plated to look like brass, chrome or black. It casts cheaply and looks fine in the box. The plating is a skin: wear through it and you are looking at grey zinc.
A solid metal desk grommet is the same metal all the way through. Solid brass scratches to more brass and takes a patina instead of flaking. Solid aluminium stays cool and even. Nothing to wear off.
Quick tells: weight (solid brass is noticeably heavy for its size), edges (machined edges are crisp; cast edges are soft with a parting line), and the inside of the bore (plating thins out where you cannot see).
2. Where plastic is fine — and where it is not
Plastic grommets are cheap and they work. Under a reception counter, in a back office, in a hole nobody sees — use one.
On a visible top they age badly: they yellow, scuff, and the cap loosens until it rattles. On a walnut desk or a stone benchtop, a plastic ring is the first thing that looks cheap. That is the job a metal desk cable grommet is for.
3. Fit: start from the cutout
The most common desk cutout is 60 mm. Check the hole before anything else — a grommet that is “nearly” the right size is the wrong size.
Ours drop into a 60 mm hole: 59.5 mm barrel, 65.5 mm flange, 53.5 mm clear bore, 18 mm under the flange. No screws, no clips. Full numbers on the spec sheet; cutting the hole is on the install guide.
4. Design: two parts, lift-out insert
A good desk grommet is two pieces: a flanged outer that lives in the hole, and an insert with a cable slot that lifts out when you need to pass a plug. Ours has a 12 mm cable slot, and the insert drops back flush once the cables are through.
Watch for thin flanges that lift, inserts that only fit one way, and brush or rubber fills that tear after a year.
5. Finish: brass, aged brass or aluminium
Solid brass ($195 AUD) for warm timber — walnut, oiled oak, brass pulls nearby. Polished on day one, a quieter patina with use.
Aged brass ($215 AUD) is the same solid brass with the patina already there — for joinery that already calls for antique or aged brass hardware.
Solid aluminium ($145 AUD) for pale tops, cooler schemes and whole floors of desks. Lighter, quieter, same fit.
Side by side detail is in brass vs aluminium; looking after them is in care.
6. What a high-end grommet costs
Plastic: a few dollars. Plated zinc: tens of dollars. Machined solid metal: more — because it is machined from solid brass or aluminium stock, not cast and plated.
Put it against the desk. On a custom desk or a run of joinery, the grommet is a rounding error in the budget and one of the few pieces of hardware people touch every day. Not sure which metal? The sample pair ($290 AUD) is one brass and one aluminium. Trade accounts get 10% off list — apply here.
The short version
- Solid metal, not plated zinc.
- Plastic only where nobody looks.
- Measure the cutout first — 60 mm is the common size.
- Two parts, lift-out insert, a slot wide enough for plugs.
- Brass for warm timber, aluminium for pale tops and big floors.
Questions
What is the best desk cable grommet?
For a desk people will look at and touch every day: a solid metal grommet machined from brass or aluminium, two-part, with a lift-out insert, sized to a standard 60 mm cutout. Avoid plated zinc and snap-fit plastic if the desk is meant to last.
Is a metal desk grommet always better than plastic?
Not always — plastic is fine in a back office or a hidden cutout. On a visible desk, boardroom table or joinery top, metal holds its edge and its look; plastic yellows, scuffs and loosens.
How do I tell solid brass from brass-plated zinc?
Weight and wear. Solid brass is heavy for its size and the colour goes all the way through, so a scratch shows more brass. Plated zinc is lighter and a deep scratch shows grey metal under the colour.
What size hole does a desk cable grommet need?
60 mm is the common desk cutout. Plinko grommets drop into a 60 mm hole (59.5 mm barrel), sit on a 65.5 mm flange, and leave a 53.5 mm clear bore for plugs.
More in the FAQ.
Shop: brass, aged brass, aluminium, sample pair. Made in Melbourne by Plinko Design.