Bulk Regular Split Lock Washers – Carbon Thru-Hardened, Made in USA – Monster Bolts

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Monster Overview Keep your assemblies tight and secure with Regular Split Lock Washers – Carbon Thru-Hardened from Monster Bolts. These washers are Made in the USA and engineered t o provide a spring-like locking action that helps resist loosening caused by vibration, shock, and thermal cycling. Manufactured from thru-hardened carbon steel, these split lock washers deliver consistent performance in demanding applications, including machinery, equipment maintenance, automotive, construction, and general industrial use. The plain finish is suitable for indoor or controlled environments and is also an excellent choice when parts will receive project-level coatings. Like our other plain-finish carbon steel products, these washers are RoHS compliant. Monster Features Locking Action: Split design provides a spring-like effect to help resist loosening under vibration and movement. Thru-Hardened Carbon Steel: Hardened for strength and durability in demanding bolted joints. Regular Style: Standard split lock washer profile for broad compatibility with inch-series bolts and nuts. Made in USA: Produced domestically for consistent quality, spec compliance, and reliable supply. Plain Finish: Suitable for controlled environments or assemblies that will be painted or coated. RoHS Compliant: Plain carbon thru-hardened finish is fully RoHS compliant. Bulk Quantities: Ideal for shops, maintenance departments, and industrial users that need stocked bins of locking washers. Monster Specifications Specification Details Washer Type Regular Split Lock Washer Material Carbon Steel, Thru-Hardened Finish Plain (uncoated carbon steel, may have light oil from manufacturing) Hardening Thru-hardened for improved strength and spring action System of Measurement Inch / SAE Country of Origin Made in USA RoHS Compliance Plain carbon steel finish is RoHS compliant Sizes Available Offered in common inch sizes; please select size and bulk quantity from the options above. More Monster Products Matching Hardware: Pair these regular split lock washers with our USA-made hex nuts and bolts for a complete fastening solution. Explore our Made in USA Fasteners Collection to find compatible Grade 5, Grade 8, and structural hardware. Order Yours Today Keep your assemblies secure with USA-Made Carbon Thru-Hardened Regular Split Lock Washers. Choose your size and bulk quantity above, then click “Add to Cart” to stock your shop or jobsite with reliable locking washers from Monster Bolts. { "@context": "https://schema.org", "@type": "Product", "name": "Bulk Regular Split Lock Washers – Carbon Thru-Hardened, Made in USA – Monster Bolts", "description": "USA-made regular split lock washers in carbon thru-hardened steel with a plain finish. Inch-series locking washers for machinery, construction, and industrial applications. RoHS compliant.", "brand": { "@type": "Brand", "name": "Monster Bolts" }, "manufacturer": { "@type": "Organization", "name": "Monster Bolts Inc." }, "material": "Carbon steel, thru-hardened", "countryOfOrigin": "US", "additionalProperty": [ { "@type": "PropertyValue", "name": "Washer Type", "value": "Regular split lock washer" }, { "@type": "PropertyValue", "name": "Finish", "value": "Plain (uncoated carbon steel)" }, { "@type": "PropertyValue", "name": "RoHS Compliant", "value": "Yes" }, { "@type": "PropertyValue", "name": "System of Measurement", "value": "Inch / SAE" } ], "image": { "@type": "ImageObject", "url": "https://cdn.shopify.com/s/files/1/1818/5247/files/Monster_Bolts_website_SEO_Image.jpg?v=1755614615", "contentUrl": "https://cdn.shopify.com/s/files/1/1818/5247/files/Monster_Bolts_website_SEO_Image.jpg?v=1755614615", "creditText": "Monster Bolts", "creator": { "@type": "Organization", "name": "Monster Bolts Inc." }, "copyrightNotice": "Copyright © {{ 'now' | date: '%Y' }} Monster Bolts Inc. All Rights Reserved", "acquireLicensePage": "https://monsterbolts.com/pages/image-licensing", "license": "https://monsterbolts.com/pages/image-licensing" } } Show more