Rok Hardware 35mm (1-3/8") Plastic Hole Plug, White, 10 Pack ROKHP35WH

Hardware 35mm (1-3/8") Plastic Hole Plug, White, 10 Pack ROKHP35WH

Features

  • Used to plug holes in cabinet doors
  • 1-15/32" (37mm) top diameter, 5/16" (8mm) drilling depth, 1-3/8" (35mm) drilling diameter
  • White Plastic

Specifications

Color White
Size 35 mm
Unit Count 10

Plastic hole plugs designed to cover 1-3/8" (35 mm) drilling-diameter openings in cabinet doors. Each white plastic plug has a 1-15/32" (37 mm) top diameter and inserts to a depth of 5/16" (8 mm); sold in a pack of 10.

Model Number: ROKHP35WH-10

Rok Hardware 35mm (1-3/8") Plastic Hole Plug, White, 10 Pack ROKHP35WH Review

4.3 out of 5

What these plugs are and where they make sense

I reach for 35 mm white hole plugs whenever I have unused Euro hinge cup bores in cabinet doors or need to tidy up a test bore on a jig. The Rok 35 mm hole plugs are purpose-built for that job: they friction-fit into a standard 35 mm (1-3/8") drilled hole and present a clean white face to hide the opening. They come in a pack of ten—handy for kitchens and small shop projects—and they’re simple, inexpensive, and, in my use, reliably snug.

Design and dimensions

The dimensions are exactly what I want for covering a hinge cup:

  • Drilling diameter: 1-3/8" (35 mm)
  • Top (visible) diameter: 1-15/32" (37 mm)
  • Insert depth: 5/16" (8 mm)
  • Material/color: white plastic

That 37 mm face is key. It gives roughly 1 mm of overhang beyond the bore diameter, which is enough to hide slight tear-out or a scruffy edge without making the plug look oversized. The 8 mm insert depth doesn’t attempt to fill a full hinge cup (which is usually 11–13 mm deep), but it doesn’t need to; the ribbed shank bites the sidewall near the face where the hole is most consistent.

The profile is low and clean. On painted or melamine doors, the white blends well. On clear-finished hardwoods, it obviously reads as a plug, but still looks tidy and intentional.

Installation: press-fit that actually behaves

Installation is a push-fit affair. I orient the plug square to the hole and press by hand; for tighter bores, I’ll use a rubber mallet and a scrap block to tap it home. The ribs bite predictably, and the lip sits flush without rocking. The material is firm enough to hold shape, yet has enough compliance to adapt to minor out-of-round bores.

I tested them across a few materials:

  • Pre-finished white cabinet doors: effortless press-in, seamless look.
  • Raw poplar frames: slightly tighter fit; still seated cleanly with a light mallet tap.
  • Melamine-faced particleboard: good grip, no chipping around the lip as it seated.

Once in, they don’t rattle. The holding force feels ideal for a friction plug: not so aggressive that you fear splitting thin veneers, but firm enough that I couldn’t pull them out with fingers alone.

Fit and tolerance realities

Even “35 mm” varies. Bit wear, brand tolerances, and how cleanly the hole was bored all matter. In my runs, holes bored with a sharp 35 mm Forstner delivered a near-perfect fit. Older cups cut with a worn bit were a touch loose. For those, a small wrap of painter’s tape around the shank or a micro bead of latex caulk inside the bore snugged things up without making them permanent. On the tight end, a whisper of sandpaper around the hole edge or a gentle mallet tap did the trick.

A small note: if your bore is wildly oversized or has chipped out beyond the 37 mm face, no friction plug will look perfect. Within normal carpentry tolerances, though, these plugs covered everything cleanly.

Finish, stain, and edge sealing

On raw wood projects, I was pleasantly surprised by how clean the interface between the plug lip and the wood remained during finishing. With gel stain, I didn’t see bleed creeping under the lip or wicking along the edge. That said, these are smooth plastic; they are not intended to be stained, and most paints will need a plastic primer for long-term adhesion. If you need a color match beyond white, your best bet is to paint the plug with an adhesion-promoting primer and a compatible topcoat before installation.

For laminate and painted doors, the stock white is a natural match for many “builder white” finishes, though it isn’t an exact match to every shade. If you’re aiming to blend into off-white or almond laminates, color mismatch is the only aesthetic ding I ran into.

Removal and reusability

These don’t include a pull tab or notch, so removal takes a bit of finesse. I’ve had the best luck with:

  • Sliding a thin plastic pry tool or painter’s 5-in-1 under the lip.
  • Using blue tape on the surface to prevent marring while I lift a corner.
  • Working around the perimeter incrementally rather than levering from one point.

Using that method, I’ve popped out a couple dozen with minimal scuffing. A few plugs did pick up tiny nicks at the edge from an early attempt with a steel chisel; they were still usable, but if you plan on frequent reuse, stick to plastic pry tools. As a semi-permanent, removable cap, they’re perfectly serviceable.

Durability and everyday wear

The plastic formulation is rigid enough to hold its shape over time but not so brittle that it snaps during insertion. I haven’t seen stress whitening or cracking around the ribs. In a kitchen environment—doors opened and closed, occasional wipe-downs—they’ve stayed put and stayed white. They’re not rubber grommets; they’re meant to be seen and touched, and the finish has held up to casual contact and cleaning with standard non-abrasive cleaners.

Beyond cabinets: other shop uses

While they’re intended for cabinet doors, I’ve found them handy for:

  • Covering test bores on jigs and fixtures to keep dust out.
  • Hiding abandoned hinge cups on shop cabinets and utility doors.
  • Creating clean access caps on hobby projects where a 35 mm hole is practical.

As long as the substrate can accept a 35 mm bore and you’re okay with a white face, they make for quick, neat closures.

Limitations to know

  • Color options: White only. If your finish is almond, cream, or a specialty shade, plan on painting or living with a contrast.
  • No pull feature: Removal is possible, but not tool-less. If you expect frequent in/out cycles, consider a plug with a tab.
  • Hole accuracy matters: A true 35 mm bore gives the best result. Significantly off-size holes may be either loose or painfully tight.

Value

For a pack of ten, the cost per opening is low, and the time savings is real. Patching a hinge cup with filler, sanding, priming, and painting is overkill for many projects; snapping in a clean, uniform plug gets you 95% of the way there in under a minute. For production shops, the consistency is helpful; for homeowners, installation doesn’t require special tools or skills.

Pros and cons

Pros:
- Clean, flush look with a forgiving 37 mm face
- Reliable friction fit in true 35 mm bores
- Quick, tool-light installation
- Durable plastic that holds up to everyday use
- Good pack quantity for typical cabinet runs

Cons:
- Only available in white
- No integrated pull tab; removal needs a thin pry tool
- Fit depends on accuracy of the existing bore

Recommendation

I recommend these Rok 35 mm hole plugs for anyone needing a fast, clean way to hide unused Euro hinge cups or tidy up 35 mm test bores. They install easily, hold securely, and present a neat, professional look with a lip large enough to cover minor imperfections. The white color won’t match every cabinet finish, and removal requires a bit of care, but those are reasonable trade-offs for a plug that fits properly and stays put. If white suits your application—or you’re willing to prime and paint them to match—this is a simple, dependable solution that earns a place in the shop drawer.



Project Ideas

Business

Pre-decorated Plug Kits for Retail

Assemble and sell themed 10-packs of pre-decorated 35 mm plugs (modern matte, vintage brass-look, kids' characters). Include instructions for installation and matching touch-up paint. Market through Etsy, local craft stores, and home-improvement fairs as an easy cabinet-update product.


Cabinet Hole Repair & Cosmetic Refresh Service

Offer a local service that replaces unwanted or damaged cabinet holes with color-matched plug-in medallions. Provide on-site color matching, finishing, and optional custom-decor work. Charge per-door or per-job; upsell full-cabinet refresh packages.


Furniture Refurbisher Partnership

Partner with furniture refinishers and antique restorers to supply decorative 35 mm plugs as a finishing touch for repaired doors and panels. Offer bulk white-stock plugs and a white-label decoration/finishing service so partners can offer unique, consistent details on refurbished pieces.


DIY Workshop + Kit Sales

Run in-person or virtual workshops teaching painting, decoupage, and resin-inlay techniques using these plugs. Sell bundled take-home kits (10 plugs, paints, brushes, resin) and provide a video follow-up. Workshops appeal to craft groups, makerspaces, and home-improvement hobbyists.


Branded Promotional & Trade-show Giveaways

Customize the 37 mm top surface with a small logo decal or printed label to make low-cost branded giveaways for interior designers, cabinet makers, or property managers. Market them as 'before-and-after' demo pieces or branded samples that recipients can use in small cosmetic repairs.

Creative

Decorative Cabinet Knob Covers

Use the 35 mm white plugs as bases for minimalist knob covers: paint or decoupage the 37 mm tops, glue on a small decorative knob or metal cap, then press into existing 1-3/8" holes to create a clean, custom cabinet pull without drilling new hardware holes.


Mosaic Wall Medallions

Create textured wall art by arranging multiple plugs on a backing board. Paint each plug, fill centers with colored resin, glass beads, or tiny tiles, then mount the board. The uniform 37 mm tops give a consistent, repeating pattern ideal for geometric or floral mosaics.


Magnetic Fridge Tiles & Game Pieces

Glue strong disc magnets to the underside of each plug and decorate the tops (paint, veneer, tiny prints). Use them as fridge magnets, or produce matching sets for tabletop games (checkers, custom tokens). The 35 mm size is large enough to display detail but small enough for handling.


Mini Wall Planter Bases

Turn plugs into small, shallow bases for air plants or preserved moss displays. Seal and decorate the top surface, adhere a tiny planting bed or foam, then insert plugs into cabinet or panel holes to create a line of living accents—works especially well on reclaimed-wood panels or vertical planter boards.


Cable-Organizing Grommet Covers

Repurpose the plugs as decorative cable pass-through covers for shallow panel holes. Trim a small slot into the plug top, paint to match cabinetry, and use to hide unfinished holes while keeping cords tidy. The 8 mm insert depth makes them ideal for cabinet door or thin panel applications.