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Shoulder washers are small but crucial components in various plumbing and electrical applications. Their primary function is to prevent over-tightening of screws and bolts, thereby protecting both the fastener and the material it's securing. Selecting the correct type and size ensures a secure, reliable connection and prevents potential damage.
Maier USA products are made with a proprietary thermoplastic olefinic elastomer (TPO), specifically designed for extreme conditions.
This high-impact polypropylene alloy delivers a high-gloss finish with strength characteristics capable of enduring the hardcore weather and temperature conditions they will encounter.
These plastics are UV-stablized, resistent to chemicals, tougher than OEM and avaliable in a wide array of colors and films.
Backed by Maier USA's 1-Year Warranty
NOTE: The "Color Detail" image is a representation of the color you are ordering.
ACTS AS A FLANGE FOR LOAD DISTRIBUTION: Shoulder washers increase the load-bearing surface under a fastener's head, protecting the material from damage.
COUNTERSINK DESIGN FOR FLAT OVAL SCREWS: Designed for use with flat or oval head screws; promotes a flush, decorative finished appearance in installations.
HIGH-STRENGTH NYLON CONSTRUCTION: Non-abrasive material with low surface friction offers superior wear properties and electrical insulating characteristics.
INSULATION AND MECHANICAL APPLICATIONS: Suitable for a wide variety of insulation, mechanical, and decorative applications including cabinet protection.
TRUSTED HILLMAN FASTENING SOLUTIONS: Hillman hardware products are engineered for consistent quality, dependable performance, and reliable fastening across construction, repair, and home improvement applications.
SIZE 0.750 in x 0.385 in QUANTITY 15 PIECES: White nylon shoulder washers ideal for robust fastening solutions; thick design increases load bearing and insulation capability
SUPERIOR WEAR PROPERTIES: Non-abrasive nylon construction offers low surface friction; ideal for applications requiring durability and long-life performance
STRONG INSULATING MATERIAL: High-quality nylon offers electrical insulation and chemical resistance; thick profile prevents nuts or bolts from tearing through materials
MULTIPURPOSE APPLICATION: Perfect for use as glides, bumpers, spacers, feet, or in panels and cabinets; supports insulation and mechanical projects; white finish blends with most surfaces
HILLMAN QUALITY: Manufactured by Hillman for reliability in fastener hardware applications; trusted choice for professional and home improvement use
Maier USA products are made with a proprietary thermoplastic olefinic elastomer (TPO), specifically designed for extreme conditions.
This high-impact polypropylene alloy delivers a high-gloss finish with strength characteristics capable of enduring the hardcore weather and temperature conditions they will encounter.
These plastics are UV-stablized, resistent to chemicals, tougher than OEM and avaliable in a wide array of colors and films.
Backed by Maier USA's 1-Year Warranty
NOTE: The "Color Detail" image is a representation of the color you are ordering.
Last update on 2026-07-18 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Hardware Shoulder Washers
Material
Nylon: Lightweight, non-conductive, and resistant to corrosion. Ideal for electrical applications and areas prone to moisture.
Metal (Steel, Brass, Aluminum): Offer greater strength and durability for load-bearing applications. Steel is robust, brass provides excellent corrosion resistance, and aluminum is lightweight.
Size and Fit
Inner Diameter: Must match the diameter of the screw or bolt shank to fit snugly.
Outer Diameter: Determines the bearing surface area. A larger outer diameter distributes pressure more effectively.
Shoulder Height: Dictates how much the fastener is spaced from the mounting surface. Ensure it provides adequate clearance for your needs.
Application
Consider the environment and load. For plumbing, corrosion resistance is key. For electrical, insulation and non-conductivity are paramount. Heavy-duty applications may require stronger metal options.
Frequently Asked Questions
What is the main purpose of a shoulder washer?
A shoulder washer acts as a spacer and a stop. It prevents a screw or bolt from being tightened too deeply into a material, protecting both the fastener and the surface from damage.
Are shoulder washers necessary for all screw applications?
Not for all, but they are highly recommended for applications where over-tightening could cause damage, such as in electronics, delicate plastics, or when mounting components that require precise spacing.
How do I choose the correct size shoulder washer?
You need to match the inner diameter to the screw or bolt size. The outer diameter and shoulder height should then be selected based on the required bearing surface and spacing for your specific project.
Can shoulder washers be used in outdoor or wet environments?
Yes, depending on the material. Nylon and brass shoulder washers offer good corrosion resistance and are suitable for damp or outdoor conditions. Stainless steel is also an excellent choice for harsh environments.
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