{"title":"Ribbed Safety Lock Washer VS Series Heavy Duty A2 Stainless Steel","description":"\u003ch1\u003eRibbed Safety Lock Washer VS Series - Heavy Duty | A2 Stainless Steel (SUS304)\u003c\/h1\u003e\n\n\u003cp\u003eFULLERKREG Ribbed Safety Lock Washers \u003cstrong\u003eVS Series (Heavy Duty)\u003c\/strong\u003e in \u003cstrong\u003eA2 Stainless Steel (SUS304 \/ 1.4301)\u003c\/strong\u003e conform to \u003cstrong\u003eDIN 9250 Type VS\u003c\/strong\u003e. The VS Series features increased wall thickness and greater cone height compared to the standard S Series, delivering significantly higher spring force and superior pre-load retention - designed for heavy machinery, high-torque bolted joints, and assemblies subject to severe vibration and dynamic loads.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard:\u003c\/strong\u003e DIN 9250 Type VS (Schnorr-type ribbed safety lock washer, Heavy Duty)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e VS - Heavy Duty (increased wall thickness and cone height vs S Series)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e A2 Stainless Steel (SUS304 \/ 1.4301)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface Treatment:\u003c\/strong\u003e Passivated and Whitened\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Range:\u003c\/strong\u003e M5 - M30\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerration:\u003c\/strong\u003e Fine radial ribs on both top and bottom faces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Anti-loosening, maximum vibration resistance, high pre-load retention\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso known as:\u003c\/strong\u003e Schnorr VS washer, heavy duty conical lock washer, heavy duty Belleville lock washer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eDimensional Data - DIN 9250 Type VS Heavy Duty (A2 Stainless Steel)\u003c\/h2\u003e\n\u003cp\u003eAll dimensions in \u003cstrong\u003emm\u003c\/strong\u003e. Data per DIN 9250 Type VS standard.\u003c\/p\u003e\n\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Size\u003c\/th\u003e\n\u003cth\u003eInner Dia. d1\u003c\/th\u003e\n\u003cth\u003eOuter Dia. d2\u003c\/th\u003e\n\u003cth\u003eThickness s\u003c\/th\u003e\n\u003cth\u003eHeight h Min\u003c\/th\u003e\n\u003cth\u003eHeight h Max\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e5.3\u003c\/td\u003e\n\u003ctd\u003e9\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e1.2\u003c\/td\u003e\n\u003ctd\u003e1.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e6.4\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e1.4\u003c\/td\u003e\n\u003ctd\u003e1.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM7\u003c\/td\u003e\n\u003ctd\u003e7.4\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003ctd\u003e1.2\u003c\/td\u003e\n\u003ctd\u003e1.7\u003c\/td\u003e\n\u003ctd\u003e2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e8.4\u003c\/td\u003e\n\u003ctd\u003e13\u003c\/td\u003e\n\u003ctd\u003e1.2\u003c\/td\u003e\n\u003ctd\u003e1.7\u003c\/td\u003e\n\u003ctd\u003e2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e10.5\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003ctd\u003e1.5\u003c\/td\u003e\n\u003ctd\u003e2.0\u003c\/td\u003e\n\u003ctd\u003e2.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e13\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e1.5\u003c\/td\u003e\n\u003ctd\u003e2.1\u003c\/td\u003e\n\u003ctd\u003e2.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM14\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e22\u003c\/td\u003e\n\u003ctd\u003e2.0\u003c\/td\u003e\n\u003ctd\u003e2.7\u003c\/td\u003e\n\u003ctd\u003e3.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e17\u003c\/td\u003e\n\u003ctd\u003e24\u003c\/td\u003e\n\u003ctd\u003e2.0\u003c\/td\u003e\n\u003ctd\u003e2.6\u003c\/td\u003e\n\u003ctd\u003e3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM18\u003c\/td\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003ctd\u003e27\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003e3.2\u003c\/td\u003e\n\u003ctd\u003e3.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM20\u003c\/td\u003e\n\u003ctd\u003e21\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003e3.3\u003c\/td\u003e\n\u003ctd\u003e3.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM22\u003c\/td\u003e\n\u003ctd\u003e23\u003c\/td\u003e\n\u003ctd\u003e33\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003e3.4\u003c\/td\u003e\n\u003ctd\u003e3.9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM24\u003c\/td\u003e\n\u003ctd\u003e25.6\u003c\/td\u003e\n\u003ctd\u003e36\u003c\/td\u003e\n\u003ctd\u003e3.0\u003c\/td\u003e\n\u003ctd\u003e3.9\u003c\/td\u003e\n\u003ctd\u003e4.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM27\u003c\/td\u003e\n\u003ctd\u003e28.6\u003c\/td\u003e\n\u003ctd\u003e39\u003c\/td\u003e\n\u003ctd\u003e3.0\u003c\/td\u003e\n\u003ctd\u003e4.0\u003c\/td\u003e\n\u003ctd\u003e4.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM30\u003c\/td\u003e\n\u003ctd\u003e31.6\u003c\/td\u003e\n\u003ctd\u003e45\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003ctd\u003e4.5\u003c\/td\u003e\n\u003ctd\u003e5.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cem\u003eNote: All A2 Stainless Steel fasteners may exhibit slight magnetic properties due to cold forming. Refer to ISO 3506-2 Annex I. For sizes M33 and above, contact FULLERKREG for availability.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eVS Series vs S Series - Key Differences\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eVS Series - Heavy Duty (This Page)\u003c\/th\u003e\n\u003cth\u003eS Series - Regular Duty\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWall Thickness s\u003c\/td\u003e\n\u003ctd\u003eThicker (1.0-3.5 mm)\u003c\/td\u003e\n\u003ctd\u003eStandard (0.3-2.0 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCone Height h\u003c\/td\u003e\n\u003ctd\u003eGreater\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring Force\u003c\/td\u003e\n\u003ctd\u003eHigh\u003c\/td\u003e\n\u003ctd\u003eMedium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePre-load Retention\u003c\/td\u003e\n\u003ctd\u003eMaximum\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Range\u003c\/td\u003e\n\u003ctd\u003eM5 - M30\u003c\/td\u003e\n\u003ctd\u003eM1.6 - M30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eHeavy machinery, high-torque joints, severe vibration\u003c\/td\u003e\n\u003ctd\u003eGeneral industrial, standard bolt loads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eA2 vs A4 - Which Grade Should You Choose?\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eA2 (SUS304) - This Page\u003c\/th\u003e\n\u003cth\u003eA4 (SUS316)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase Alloy\u003c\/td\u003e\n\u003ctd\u003e18% Cr, 8% Ni\u003c\/td\u003e\n\u003ctd\u003e16% Cr, 10% Ni, 2% Mo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolybdenum\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003e2-3% - key for chloride resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrosion Resistance\u003c\/td\u003e\n\u003ctd\u003eGood - indoor \/ mild outdoor\u003c\/td\u003e\n\u003ctd\u003eExcellent - marine, chemical, coastal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Environment\u003c\/td\u003e\n\u003ctd\u003eGeneral industrial\u003c\/td\u003e\n\u003ctd\u003eMarine, food processing, chemical plant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003ePremium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eHow It Works - Schnorr Ribbed Safety Lock Washer\u003c\/h2\u003e\n\n\u003cp\u003eThe VS Series washer operates on two simultaneous locking mechanisms:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🔩 \u003cstrong\u003eConical spring action\u003c\/strong\u003e - the increased cone height stores greater elastic energy under bolt load. As the bolt tends to loosen, the washer pushes back with higher force, maintaining clamp load even under severe vibration and thermal cycling.\u003c\/li\u003e\n\u003cli\u003e🔒 \u003cstrong\u003eRadial rib grip\u003c\/strong\u003e - fine ribs on both faces bite into the bolt head\/nut bearing surface and the joint surface, creating strong mechanical resistance to rotation in both directions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWashers can be stacked \u003cstrong\u003ein the same direction\u003c\/strong\u003e to multiply spring force, or \u003cstrong\u003eback-to-back\u003c\/strong\u003e to increase deflection range while maintaining locking grip.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eStandard and Compliance\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDIN 9250\u003c\/strong\u003e specifies ribbed safety lock washers (Schnorr-type) in two series:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType S\u003c\/strong\u003e - Regular Duty (standard dimensions)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType VS\u003c\/strong\u003e - Heavy Duty (increased thickness and cone height, this page)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDIN 9250 is functionally cross-referenced with NFE 25-511 (French standard) and the Schnorr original specification. FULLERKREG washers are manufactured to full DIN 9250 Type VS dimensional compliance. Material certification (EN 10204 3.1) available on request for bulk orders.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eMaterial and Surface Specification\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial Grade\u003c\/td\u003e\n\u003ctd\u003eA2 Stainless Steel (SUS304 \/ 1.4301)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Treatment\u003c\/td\u003e\n\u003ctd\u003ePassivated and Whitened\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrosion Resistance\u003c\/td\u003e\n\u003ctd\u003eGood - suitable for indoor and mild outdoor environments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnetic Properties\u003c\/td\u003e\n\u003ctd\u003eSlightly magnetic after cold forming (per ISO 3506-2 Annex I)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-196 to +300 degrees C (continuous service)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoHS Compliant\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eKey Features and Technical Advantages\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e🔩 \u003cstrong\u003eHeavy Duty spring force\u003c\/strong\u003e - thicker wall and greater cone height deliver maximum pre-load retention\u003c\/li\u003e\n\u003cli\u003e🔒 \u003cstrong\u003eDual locking mechanism\u003c\/strong\u003e - conical spring pre-load + radial rib grip on both faces\u003c\/li\u003e\n\u003cli\u003e🔄 \u003cstrong\u003eReusable\u003c\/strong\u003e - washers retain locking strength if not deformed or damaged during removal\u003c\/li\u003e\n\u003cli\u003e⚡ \u003cstrong\u003eElectrical conductivity\u003c\/strong\u003e - ribs penetrate oxide layers for reliable grounding and bonding\u003c\/li\u003e\n\u003cli\u003e🌊 \u003cstrong\u003eCorrosion resistant\u003c\/strong\u003e - A2 stainless steel suitable for humid and mildly corrosive environments\u003c\/li\u003e\n\u003cli\u003e🔀 \u003cstrong\u003eStackable\u003c\/strong\u003e - same-direction for higher force; back-to-back for greater deflection\u003c\/li\u003e\n\u003cli\u003e🏭 \u003cstrong\u003eBulk supply ready\u003c\/strong\u003e - available in bags, boxes, and custom packaging for production lines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eHeavy industrial machinery and equipment subject to severe vibration\u003c\/li\u003e\n\u003cli\u003eHigh-torque structural bolted connections\u003c\/li\u003e\n\u003cli\u003ePower generation equipment - turbines, generators, compressors\u003c\/li\u003e\n\u003cli\u003eAutomotive powertrain and suspension high-load joints\u003c\/li\u003e\n\u003cli\u003eRail and transportation heavy-duty assemblies\u003c\/li\u003e\n\u003cli\u003eWind turbine tower and nacelle bolted flanges\u003c\/li\u003e\n\u003cli\u003eOffshore and marine structural connections\u003c\/li\u003e\n\u003cli\u003eMining and construction equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Gallery\u003c\/h2\u003e\n\u003cp\u003eRibbed Safety Lock Washer VS Series Heavy Duty - A2 Stainless Steel\u003c\/p\u003e\n\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width:25%; text-align:center; padding:12px;\"\u003e[ Image 1 ]\u003c\/td\u003e\n\u003ctd style=\"width:25%; text-align:center; padding:12px;\"\u003e[ Image 2 ]\u003c\/td\u003e\n\u003ctd style=\"width:25%; text-align:center; padding:12px;\"\u003e[ Image 3 ]\u003c\/td\u003e\n\u003ctd style=\"width:25%; text-align:center; padding:12px;\"\u003e[ Image 4 ]\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhy Choose FULLERKREG?\u003c\/h2\u003e\n\n\u003cp\u003e\n🏆 \u003cstrong\u003eStandard Compliance\u003c\/strong\u003e - Full DIN 9250 Type VS dimensional conformance, with NFE 25-511 cross-reference support\u003cbr\u003e\n🔬 \u003cstrong\u003eMaterial Traceability\u003c\/strong\u003e - EN 10204 3.1 mill certificates available for A2 and A4 grades\u003cbr\u003e\n📦 \u003cstrong\u003eFlexible MOQ\u003c\/strong\u003e - Small batch samples to full production quantities; custom packaging available\u003cbr\u003e\n🌍 \u003cstrong\u003eGlobal Shipping\u003c\/strong\u003e - Reliable export logistics to Europe, North America, Southeast Asia, and beyond\u003cbr\u003e\n💬 \u003cstrong\u003eTechnical Support\u003c\/strong\u003e - Engineering team available for selection guidance, stacking calculations, and custom specifications\u003cbr\u003e\n⚙️ \u003cstrong\u003eBroad Range\u003c\/strong\u003e - VS Series and S Series available in A2, A4 stainless steel and 65Mn spring steel grades\n\u003c\/p\u003e","products":[],"url":"https:\/\/www.fullerkr.com\/collections\/ribbed-safety-lock-washer-vs-series-heavy-duty-a2-stainless-steel.oembed","provider":"Fullerkreg Fasteners","version":"1.0","type":"link"}