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The Sugatsune AR3-K300 is a full-extension, side-mount ball bearing drawer slide built from aluminum, with an integrated hold-out detent that keeps the drawer in the open position until intentionally pushed closed. At just under 12 inches in length, it suits compact drawers in furniture, light fixtures, and specialty cabinetry where weight matters as much as function.
A standard slide stays open only as long as nothing disturbs it. The AR3-K300's hold-out detent changes that — push the drawer to full extension and it stays there until you push it closed. That makes it a practical choice for pull-out trays, instrument or tool drawers that need to stay accessible while both hands are occupied, display cases, and anywhere a drawer being nudged closed mid-task is a problem. The detent releases with a normal push, so there is no lever or release mechanism to manage. This is a standard-motion slide in the closing direction: there is no soft-close or self-close feature, and the drawer stays where it is left once pushed closed.
The AR3-K series is built from aluminum rather than the cold-rolled steel that most side-mount ball bearing slides use. That material choice reduces the slide's own weight, which matters in weight-sensitive furniture builds, portable casework, and applications where the drawer hardware contributes to a total assembly weight limit. The aluminum finish is natural in appearance and functional rather than decorative. This slide is for dry indoor use; aluminum is not a corrosion-resistant substitute for stainless in wet or washdown environments.
At 22 lb per pair, the AR3-K300 is a light-duty slide. It is well matched to small jewelry drawers, instrument cases, display cabinetry, portable furniture, and specialty built-ins where saving weight on the hardware side is a design consideration. Cabinet shops running kitchen or utility drawers in the 75–100 lb class will want to step up to a heavier slide for those applications. This one is for the build where aluminum makes sense — compact, light, and precise, with the hold-out detent as the differentiating feature that drives the selection.
No. The detent engages only at the fully open position. In the closed direction, the slide is standard motion — no hold-in, no self-close, and no soft-close. The drawer rests closed under its own weight.
That is the closed (nominal) slide length. Because this is a full-extension slide, the drawer travel is approximately the same distance, bringing the whole drawer clear of the cabinet opening. Slide length and drawer travel are two separate specs — on a full-extension slide they are close, but on a 3/4-extension model they are not.
Side clearance for this series is not stated in the available product data. Before building the drawer box, confirm the required clearance per side with Sugatsune's published specifications for the AR3-K series.
No. The AR3-K300 is non-handed, so both slides in a pair are identical and each one fits either side of the drawer.
Side-mount slides in face-frame cabinets need rear support at the back of the slide. Check whether Sugatsune offers rear mounting brackets for the AR3-K series before specifying it for face-frame construction.
When aluminum construction and a stay-open detent are both on the requirement list, the AR3-K300 covers both in a compact, full-extension package built for drawers that need to work as hard as the hands using them.