{"id":4138,"date":"2025-07-02T03:23:51","date_gmt":"2025-07-02T10:23:51","guid":{"rendered":"https:\/\/guxiangjs.com\/?post_type=product&p=4138"},"modified":"2025-07-02T03:23:52","modified_gmt":"2025-07-02T10:23:52","slug":"ansi-asme-b18-21-1-split-lock-washer-18-8-304-stainless-steel-spring-lock-washer","status":"publish","type":"product","link":"https:\/\/guxiangjs.com\/zh\/shop\/ansi-asme-b18-21-1-split-lock-washer-18-8-304-stainless-steel-spring-lock-washer\/","title":{"rendered":"ANSI\/ASME B18.21.1 Split Lock Washer 18-8 (304) Stainless Steel Spring Lock Washer"},"content":{"rendered":"
    \n
  1. Reliable Spring-Action Locking & Corrosion-Proof Performance
    \n\u2022 Made from 18-8 \/ 304 austenitic stainless steel and work-hardened to \u2248 210 \u2013 230 HV, the helical split ring exerts a continuous radial load that bites into both the fastener underside and the joint material, preserving clamp force against vibration, shock, and thermal cycling.
    \n\u2022 The open-coil geometry offers elastic deflection of 0.10 \u2013 0.30 mm (size M3 \u2013 M16), absorbing joint relaxation in soft gaskets or painted surfaces while preventing back-off without damaging threads.
    \n\u2022 A self-renewing chromium-oxide film shields the washer from salt spray, detergents, mild acids, and outdoor moisture across a \u2212200 \u00b0C \u2192 +425 \u00b0C service window, eliminating the red-rust risk associated with plated carbon-steel versions.
    \n\u2022 Conforms to ISO 8752 \/ DIN 127 performance criteria and retains \u2265 88 % of initial preload after 1 000 transverse-vibration cycles in independent Junker testing.<\/li>\n
  2. Broad, Cross-Industry Application Spectrum
    \n\u2022 Electronics & Instrumentation: Secures PCB standoffs, heatsink screws, and terminal blocks where low magnetic permeability, electrical continuity, and compact height are desired.
    \n\u2022 Food, Medical & Pharmaceutical Equipment: Stainless construction endures aggressive wash-downs and autoclave sterilization on mixer guards, lab racks, and sanitary clamp assemblies.
    \n\u2022 Transportation & Marine Hardware: Maintains torque on lighting brackets, dashboard panels, battery trays, and deck fittings exposed to constant vibration, humidity, and brine.
    \n\u2022 Machinery, Renewable-Energy & Construction: Locks sensor mounts, guard plates, solar-panel frames, and cable glands, ensuring long-term clamp integrity in high-cycle duty or outdoor environments.<\/li>\n
  3. Installer-Friendly, Time-Saving Handling
    \n\u2022 Fits beneath standard hex heads or nuts without special orientation tools; installers apply the same torque specified for plain washers, so no recalculation or new procedures are needed.
    \n\u2022 Chamfered coil ends minimize burrs and allow smooth feeding in magnetic sockets, screw presenters, or automatic pick-and-place equipment.
    \n\u2022 Overall height increase is only 0.5 \u2013 1.2 mm, making retrofits possible without switching to longer screws or redesigning recess depths.
    \n\u2022 Supplied bulk-packed, in resealable pouches, or on tape-and-reel strands to integrate seamlessly with field toolkits, bench stations, and high-speed assembly lines.<\/li>\n
  4. Certified Quality & Long-Term Durability
    \n\u2022 100 % optical and load-deflection inspection verifies free height, gap width, hardness, and spring rate to statistical Cp\/Cpk > 1.33, supporting ISO 9001, IATF 16949, and AS 9100 quality systems.
    \n\u2022 Stress-relief tempering removes residual forming stresses, preserving elastic modulus and preventing relaxation creep over repeated clamp cycles.
    \n\u2022 Electropolished or passivated variants achieve Ra \u2264 0.4 \u00b5m for hygienic or decorative finishes without affecting locking performance; low-outgassing options meet clean-room and vacuum standards.
    \n\u2022 Each production lot is laser-etched or QR-coded on outer packaging for traceability back to melt chemistry and mechanical test reports, ensuring confidence in safety-critical aerospace, medical-device, and infrastructure applications.<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"

    Reliable Spring-Action Locking & Corrosion-Proof Performance \u2022 Made from 18-8 \/ 304 austenitic stainless steel and work-hardened to \u2248 210 \u2013 230 HV, the helical split ring exerts a continuous radial load that bites into both the fastener underside and the joint material, preserving clamp force against vibration, shock, and thermal cycling. \u2022 The open-coil […]<\/p>","protected":false},"featured_media":4139,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[176],"product_tag":[],"class_list":{"0":"post-4138","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-washer","8":"first","9":"instock","10":"taxable","11":"shipping-taxable","12":"purchasable","13":"product-type-variable"},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product\/4138","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/comments?post=4138"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/media\/4139"}],"wp:attachment":[{"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/media?parent=4138"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product_brand?post=4138"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product_cat?post=4138"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product_tag?post=4138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}