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HILLMAN®

Zinc Indoor Flat Washers — M1.6, 0.30 mm, 40-pack

Mfg.#: 4297-a
Sku#: 6331839

Pack of 40 zinc-finished flat washers for indoor fastening applications
Designed for M1.6 metric fasteners with a 1.7mm inside diameter
Features a 4mm outside diameter for small-scale hardware assemblies
Suitable for thin-clearance uses with 0.30mm thickness
Includes zinc finish that offers basic corrosion resistance for indoor use

* Estimated stock levels as of Thu, Apr 2, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.

Description

These HILLMAN Zinc Indoor Flat Washers provide a simple, reliable way to distribute load and protect surfaces when fastening small hardware. Sized for M1.6 fasteners, each washer has a 1.7mm inside diameter, a 4mm outside diameter and a thin 0.30mm profile that fits in tight assemblies where spacing and alignment matter. The zinc finish resists everyday wear while keeping a low profile, making the set useful for light-duty indoor projects such as electronics repair, appliance trim, cabinet hardware and other small-scale fastening tasks. The 40-piece pack gives you enough washers to keep on hand for repairs or small builds, and their consistent dimensions make them easy to pair with M1.6 screws for neat, secure connections.

Specifications

General

Finish	Zinc
Indoor/Outdoor	Indoor
Pack Qty	40
Type	Flat Washer

Dimensions

Diameter	M1.6
Inside Diameter	1.7mm
Outside Diameter	4mm
Size	M1.6
Thickness	0.30mm

Manufacturing Details
The following information is subject to change without notice

Prop 65 Warning	WARNING: This product can expose you to chemicals, including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.