{"product_id":"value-collection-31320-split-lock-washer-size-4-grade-5-steel","title":"Value Collection 31320 Split Lock Washer Size 4 Grade 5 Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 31320 is a size 4 split lock washer manufactured from Grade 5 steel with a zinc-plated finish. Split lock washers are used to resist loosening of threaded fasteners under vibration and dynamic loads. The helical split design creates spring tension as the fastener is torqued down, biting into both the mating surface and the fastener bearing face to maintain clamp load. At 0.209 inches thick with an inside diameter range of 0.114 to 0.12 inches and a maximum outside diameter of 0.209 inches, this washer is sized for use with number 4 machine screws. The zinc-plated finish provides basic corrosion resistance for general indoor and light-duty applications. Electricians, HVAC technicians, plumbers, and general mechanical tradespeople use split lock washers in panel assembly, equipment mounting, and component fastening tasks.\u003c\/p\u003e\n\u003cp\u003eThis washer is suited for light-duty fastening applications across residential and commercial settings. Typical uses include securing electrical junction box covers, HVAC control board mounting hardware, panel components, and similar small-fastener assemblies where vibration or thermal cycling could otherwise allow a fastener to back out over time. The inch-system sizing and Grade 5 material make it compatible with standard number 4 threaded fasteners found throughout HVAC, electrical, and plumbing equipment enclosures.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 5 steel construction provides reliable spring tension and hardness suitable for general mechanical fastening\u003c\/li\u003e\n  \u003cli\u003eZinc-plated finish offers basic corrosion protection for indoor and light-duty environments\u003c\/li\u003e\n  \u003cli\u003eHelical split design resists fastener loosening caused by vibration and thermal cycling\u003c\/li\u003e\n  \u003cli\u003eSized for number 4 screw with inside diameter range of 0.114 to 0.12 inches\u003c\/li\u003e\n  \u003cli\u003eMaximum outside diameter of 0.209 inches for use in tight clearance applications\u003c\/li\u003e\n  \u003cli\u003eInch measurement system; does not meet military specifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with number 4 machine screws in inch-system threaded fastener assemblies. Suitable as a standard split lock washer replacement in general mechanical, electrical, HVAC, and plumbing equipment applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall split lock washers between the fastener bearing face and the mating surface before seating the screw or bolt. Ensure the fastener and washer are properly aligned before applying torque to avoid misseating the helical coil. Power down and de-energize any electrical equipment before accessing interior fastener locations. Follow applicable NEC or equipment manufacturer guidelines when working inside electrical enclosures or control panels.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eScrew Size\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: 5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc-Plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Inside Diameter\u003c\/strong\u003e: 0.114 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Inside Diameter\u003c\/strong\u003e: 0.12 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Outside Diameter\u003c\/strong\u003e: 0.209 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.209 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMilitary Specification\u003c\/strong\u003e: Does Not Meet Military Specifications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 31320\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51717730500914,"sku":"31320","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/019b6ee1a1c8c359197e24226225ae48.jpg?v=1788544999","url":"https:\/\/voomisupply.com\/products\/value-collection-31320-split-lock-washer-size-4-grade-5-steel","provider":"Voomi Supply","version":"1.0","type":"link"}