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DOT® Grommet with Tooth Washer
1/2" Government Black Brass #4 (1 gross)

Item # 233790

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This #4 grommet and tooth washer set is used to reinforce holes in a variety of fabrics. Made from heavy-gauge brass, these small yet resilient parts can stand up to any type of environment. The finish gives a matte black look and enhances abrasion resistance. The tooth washer features interlocking teeth for a stronger hold than a standard washer. Simply punch a hole into the fabric then install the metal grommet and washer with the right setting tools.

While great for banners, drapery, and curtains, they also work well in marine, custom upholstery, and outdoor awning projects. Applications include banners and flags, privacy drapes, boat covers, luggage, safety gear, tarps, awnings, seating, signs and media, and outdoor tents.

The hole's inner diameter is 1/2". 1 gross = 144 grommets and 144 washers (288 total pieces).

For a brief outline on which types suit which applications, head to our main Grommets page.

Trademark: DOT® is a registered trademark of Scovill Fasteners, Inc.


Hole Size:
Government Black
Package Size:
1 gross
Product Category:
Grommet - Scovill Grommets With Washers
Government Specifications Met:
MIL-G-16491F, MS-20230, NASM-16491 and NASM-20230.
Government Black
Hand Tools Part Number:
22-RHT4GR (#223535)
Hole Size After Setting:
1/2 in.
Machine Tools Part Number:
22-RBS-4GR (#223565)
Standard Package:
1 gross