The best 3/8-inch fender washer depends on the material, outside diameter, and quantity your project requires. Makers Bolt’s zinc-plated steel washers suit general-purpose use, while ALBO’s 304 stainless steel options offer larger packs in two diameters. For extra-wide coverage, consider the 2-inch zinc-plated option; for a compact stainless steel washer, BNUOK offers a 1-inch outside diameter.
| Product | Material | Outside Diameter | Pack Size | Best For |
|---|---|---|---|---|
| Makers Bolt | Zinc-plated steel | 1-1/4 in. | 100 | General-purpose projects |
| ALBO 1-1/4-inch | 304 stainless steel | 1-1/4 in. | 100 | Corrosion resistance in a standard size |
| ALBO 1-1/2-inch | 304 stainless steel | 1-1/2 in. | 100 | More surface coverage |
| Fastener Basics | Zinc-plated steel | 2 in. | 10 | Extra-wide load distribution |
| BNUOK | 304 stainless steel | 1 in. | 84 | Compact coverage with stated thickness |
Makers Bolt Zinc-Plated 1-1/4-Inch Washers
This 100-count pack has a 3/8-inch inside diameter and a 1-1/4-inch outside diameter. The washers are zinc-plated steel, and the listing says they meet ASME B18.21.1. Their wider outside diameter provides a larger bearing surface than a standard small flat washer.
Best for: Buyers who need a bulk pack of zinc-plated steel washers for general fastening tasks. Choose this option if the 1-1/4-inch outside diameter suits the surface area you need. The listing does not provide a washer thickness, so verify thickness requirements separately.
ALBO 304 Stainless Steel, 1-1/4 Inch
ALBO’s pack contains 100 304 stainless steel fender washers, each listed as 3/8 inch inside diameter by 1-1/4 inches outside diameter. The product description highlights corrosion resistance and lists automotive, furniture assembly, electrical repair, and construction among its potential uses.
Best for: Projects that call for a 1-1/4-inch washer and stainless steel rather than zinc-plated steel. This is a practical choice when buying a larger quantity. The listing does not specify thickness, so it may not suit applications with a precise thickness requirement.
ALBO 304 Stainless Steel, 1-1/2 Inch
This ALBO option includes 100 304 stainless steel washers with a 3/8-inch inside diameter and a 1-1/2-inch outside diameter. Compared with the 1-1/4-inch ALBO version, the larger outside diameter covers more area around the fastener. The listing describes corrosion resistance and use in several repair and assembly settings.
Best for: Buyers who want a large quantity of stainless washers with more coverage than a 1-1/4-inch model provides. Choose it when the added diameter fits the workpiece and available space. Avoid it if a smaller washer is necessary for clearance.
Fastener Basics Zinc-Plated 2-Inch Washers
These zinc-plated steel washers have a 3/8-inch inside diameter and a 2-inch outside diameter, with 10 pieces per pack. Their particularly wide, flat surface is intended to spread pressure across a larger area and help reduce the chance of a fastener pulling through or deforming the material.
Best for: Applications where a broad bearing surface matters more than pack size. The small 10-piece quantity may be convenient for a limited repair. A 2-inch outside diameter needs more surrounding space than the other options here, so check clearance before choosing it.
BNUOK 304 Stainless Steel, 1-Inch
BNUOK’s 84-piece pack is listed as 3/8-inch inside diameter by 1-inch outside diameter, with a thickness of 0.059 inches. The washers are 304 stainless steel, and the product description says they are designed to provide a wider bearing surface to help prevent nuts, bolts, or screws from pulling through base material.
Best for: Buyers who need a smaller outside diameter, a stated thickness, and a bulk stainless steel pack. This washer provides less coverage than the 1-1/4-, 1-1/2-, and 2-inch choices, so select a wider size when the material needs more support.
Buying Guide: How to Choose 3/8-Inch Fender Washers
What does 3/8 inch refer to?
For these products, 3/8 inch refers to the inside diameter, the opening intended for a matching fastener size. Check your bolt or screw dimensions before ordering. Do not choose by outside diameter alone: that measurement describes the washer’s total width across its face.
Which outside diameter should you choose?
A larger outside diameter creates a broader bearing surface, which can help distribute pressure and reduce pull-through on a material. The 1-inch BNUOK option is the most compact choice in this selection; the 2-inch Fastener Basics washer is the widest. Match the washer to the workpiece and confirm it will fit the available space.
Should you choose stainless steel or zinc-plated steel?
The listed stainless steel options are made from 304 stainless steel and are described as corrosion-resistant. Zinc-plated steel is used in the Makers Bolt and Fastener Basics products. Consider the environment and project specifications when selecting a material; the product details alone do not establish suitability for every exposure or load.
How many washers should you buy?
Pack sizes range from 10 to 100 pieces among these picks. Count the fasteners in your project and consider whether you need spares. Also check thickness when it matters: BNUOK lists 0.059 inches, while the other selected listings do not state a thickness in the provided details.
Frequently Asked Questions
Are 3/8-inch fender washers suitable for 3/8-inch bolts?
The selected products are listed with a 3/8-inch inside diameter and are described as fitting 3/8-inch fasteners. Confirm the product dimensions and your fastener requirements before use.
What is the advantage of a fender washer?
A fender washer has a comparatively wide outside diameter that spreads the bearing area around a fastener. This can help reduce pull-through or surface damage, depending on the material and application.
Is a larger outside diameter always better?
No. A wider washer can distribute pressure over more area, but it also needs more clearance. Choose the largest diameter that fits the surface and project requirements.
Which option has a stated thickness?
The BNUOK 3/8-inch by 1-inch 304 stainless steel washer is listed as 0.059 inches thick. The other selected products do not include a thickness in the supplied product details.