HAT Collective's heavy-duty E5 spring arm for one screen of 2.3 to 20.4 kg and up to 49 inches. 267 mm of height adjustment, three rotation joints, a quick-disconnect VESA plate, a one-tool top-down mount for desks up to 38 mm, and HAT's 15-year warranty.
One Arm for Heavy Screens
The E5 is HAT Collective's monitor arm system, launched in 2024. This E5 Single Dynamic is the heavy-duty version: HAT rates it for one screen of 5 to 45 lb (2.3–20.4 kg), up to 49 inches, on a spring arm with 267 mm of height adjustment.
Three rotation joints let the screen swing and turn to where you want it, and it pivots from landscape to portrait. The photo shows the arm in black; this listing is the white finish.
Built to Be Installed and Changed
The E5 mounts from above the desk with a C-clamp or through a grommet hole, both included, on worktops up to 38 mm thick. One tool does the install, and it stores in the mount so it is there when the set-up changes.
Rotation stops are set from outside the arm to 90, 180 or 360 degrees, with no need to take it apart. A tension indicator lets you set the spring to the screen's weight before it goes on, and the quick-disconnect VESA plate lets you change screens without tools.
The Details
Five Things That Make It an E5
The mount, the quick connections, the tension indicator, the tilter head and the cable route. Detail photos show HAT's silver and polished finishes.

Top-Down Mount, One Tool
Clamp or grommet, fitted from above, with the tool stored in the mount.

Push-Button Quick Connections
HAT builds the E5 from 12 components joined by push-button connections.

Tension Indicator
Set the spring to the screen's weight before the screen goes on.

Quick-Disconnect VESA
The VESA 75 / 100 plate releases, so screens change without tools.

Cable Management
Cables route along the arm and down through the mount.
The Numbers
- Screen Weight
- 2.3–20.4 kg
- Screen Size
- Up to 49 in
- Height Adjustment
- 267 mm
- Rotation Joints
- 3
- Desk Thickness
- Up to 38 mm
- Warranty
- 15 years
Figures are from HAT Collective's E5 product pages and HAT's E5 cutsheet (Rev B, 2024); inch figures are converted by us. HAT does not publish the arm's own weight, reach or materials. Weigh your screen without its stand.
Room for a 49-Inch Screen
HAT rates the E5 Single Dynamic for screens up to 49 inches and 2.3 to 20.4 kg, which takes in most ultrawide and curved monitors as well as large single displays. The screen bolts to a quick-disconnect VESA 75 or 100 plate, so it lifts off the arm without tools.
Check the minimum as well as the maximum: a screen lighter than 2.3 kg will not hold its position on this arm. Weigh your screen without its stand, or send us the model on 02 9640 0642 and we will check it. The photo shows a black E5 Single; this listing is white.
This Model
This listing is the HAT Collective E5 Single Dynamic in white (E5-D1-WHT), with C-clamp, grommet mount and quick-disconnect VESA adapter included. HAT also makes it in black and silver; call us if you need another finish and we will check availability. The photo shows white E5 arms in HAT's dual configuration.
Two screens? See the E5 Dual Dynamic. For lighter everyday screens up to 9 kg, the E2 Single costs less.
Why We Stock the HAT Collective E5
We stock the E5 because it covers screens most arms do not: one spring arm rated from 2.3 kg up to 20.4 kg and 49 inches, fitted from above the desk with one tool that stays in the mount. HAT builds it from 12 components joined by push-button quick connections, with rotation stops you set from outside the arm.
HAT backs the E5 range with a 15-year warranty under normal use of a 40-hour, five-day week, and claims are handled by Chair Dinkum in Sydney on 02 9640 0642. Your rights under the Australian Consumer Law for faulty or damaged goods are separate and are not limited by it.
Features & Specifications
Key Features
Downloads
Chair Dinkum — warrantyLink →Dimensions
Figures are from HAT Collective's E5 product pages and HAT's E5 cutsheet (Rev B, 2024); inch figures are converted by us. HAT does not publish the arm's own weight, reach or materials. Weigh your screen without its stand. Warranty terms are on our warranty page.
Frequently Asked Questions
If the screen weighs 2.3 to 20.4 kg without its stand, is no larger than 49 inches and has 75 or 100 mm VESA holes, it is within HAT's rating. Note the minimum: a very light screen under 2.3 kg will not hold position on this arm; the E2 Single suits those.
The E5 mounts from above with a C-clamp or through a grommet hole, both included, on worktops up to 38 mm thick. A grommet hole needs to be at least 57 mm across (HAT's cutsheet; its product page says 51 mm). If a beam or modesty panel sits at the back edge, call 02 9640 0642 before you order.
The E2 Single is HAT's everyday arm for 1 to 9 kg screens up to 32 inches, with a 10-year warranty. The E5 Single Dynamic takes heavier and larger screens, to 20.4 kg and 49 inches, adds the quick-disconnect VESA plate and external rotation stops, and carries 15 years.
We list the white E5 Single Dynamic (E5-D1-WHT). HAT also makes it in black and silver; call 02 9640 0642 if you need another finish and we will check availability.
15 years. HAT Collective's published warranty covers E5 monitor arms for 15 years under normal use of a 40-hour, five-day week. Claims are handled by Chair Dinkum in Sydney on 02 9640 0642; full terms are on our warranty page. Your rights under the Australian Consumer Law for faulty or damaged goods are separate and are not limited by it.
Call 02 9640 0642 to check which arms are on display at our Pyrmont showroom, 1/209 Harris Street, before you visit. We can also check your screen and desk over the phone before you order.

