{"title":"Safety Washers","description":"\u003ch2\u003eSafety Washer Selection — Quick Reference\u003c\/h2\u003e\n\u003cp\u003eSafety washers — LOCKING + ANTI-VIBRATION + tamper-resistant washer designs to PREVENT FASTENER LOOSENING from vibration + thermal cycling + dynamic loads. Workshop + automotive + industrial machinery applications.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSafety Washer Type\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring Lock Washer (DIN 127)\u003c\/td\u003e\n\u003ctd\u003eGeneral workshop — see \u003ca href=\"\/en-nz\/collections\/spring-lock-washers\"\u003espring washers\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Tooth Lock Washer\u003c\/td\u003e\n\u003ctd\u003eHigher locking + smaller bore\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Tooth Lock Washer\u003c\/td\u003e\n\u003ctd\u003eHigher locking + electrical earth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWedge Lock Washer (Nord-Lock)\u003c\/td\u003e\n\u003ctd\u003eHeavy vibration + extreme — see \u003ca href=\"\/en-nz\/collections\/wedge-lock-washers\"\u003ewedge-lock\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisc \/ Belleville Spring\u003c\/td\u003e\n\u003ctd\u003eHigh pre-load + tolerance take-up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConical Spring Washer\u003c\/td\u003e\n\u003ctd\u003eHeavy spring action\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerrated Flange\u003c\/td\u003e\n\u003ctd\u003eCombined with hex nut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eCritical:\u003c\/strong\u003e Spring washers ALONE INADEQUATE for severe vibration — use wedge-lock for safety-critical joints. Replace single-use designs each assembly. Match to bolt grade + finish. Companion: \u003ca href=\"\/en-nz\/collections\/washers\"\u003ewashers\u003c\/a\u003e, \u003ca href=\"\/en-nz\/collections\/spring-lock-washers\"\u003espring lock\u003c\/a\u003e, \u003ca href=\"\/en-nz\/collections\/wedge-lock-washers\"\u003ewedge lock\u003c\/a\u003e, \u003ca href=\"\/en-nz\/collections\/fasteners\"\u003efasteners\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eSafety Washers for Australian Engineering and Maintenance\u003c\/h2\u003e\n\u003cp\u003eSafety washers are the locking washers that prevent bolted joints from loosening under vibration, dynamic load, and thermal cycling. Different from spring washers and split lock washers (which provide modest vibration resistance), safety washers use cam, serration, or conical-spring geometries that lock the joint mechanically. AIMS Industrial supplies safety washers including the Schnorr serrated range and complementary locking systems for Australian engineering and maintenance work.\u003c\/p\u003e\n\n\u003ch3\u003eThe safety washer types we stock\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSchnorr serrated safety washers\u003c\/strong\u003e — German-engineered conical washers with serrated faces; the premium safety washer choice\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNord-Lock wedge-locking washers\u003c\/strong\u003e — Swedish-designed washer pairs that prevent rotation through wedge geometry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal star washers\u003c\/strong\u003e — teeth bite into the joint material; for small fastener applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal star washers\u003c\/strong\u003e — teeth bite into the bolt head; for general locking applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal\/external combination star washers\u003c\/strong\u003e — both internal and external teeth for maximum grip\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConical spring washers (Belleville)\u003c\/strong\u003e — for spring-loaded fastening that maintains tension as joints relax\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhere safety washers earn their place\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibrating equipment\u003c\/strong\u003e — pumps, motors, gearboxes where standard spring washers don't hold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy machinery\u003c\/strong\u003e — earth-moving, mining, agricultural equipment subject to constant shock loading\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle chassis\u003c\/strong\u003e — automotive, truck, and trailer fastenings exposed to vibration and thermal cycling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHVAC plant\u003c\/strong\u003e — fan and motor mountings, ducting connections subject to ongoing vibration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCritical safety fixings\u003c\/strong\u003e — anywhere joint loosening would create a safety risk\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eChoosing the right safety washer\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSchnorr serrated\u003c\/strong\u003e — for general vibration resistance with serviceable joints; widely used premium choice\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNord-Lock\u003c\/strong\u003e — for the highest vibration resistance; mechanically prevents rotation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStar washers\u003c\/strong\u003e — economical for light-duty locking on smaller fasteners\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConical spring\u003c\/strong\u003e — for joints where spring-loaded fastening maintains preload as the joint settles\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy standard spring washers often fail\u003c\/h3\u003e\n\u003cp\u003eConventional split-ring spring washers provide modest spring force but limited rotation resistance. Under sustained vibration, they can fully relax (squashed flat) and provide essentially no locking function. For serious vibration applications, a proper safety washer (Schnorr or Nord-Lock) is the right specification — the cost difference is small against the cost of a single fastener loosening in service.\u003c\/p\u003e\n\n\u003ch3\u003eMaterials and finishes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring steel (zinc-plated)\u003c\/strong\u003e — the everyday workshop choice\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless steel 304 or 316\u003c\/strong\u003e — for corrosive and food-contact environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeomet or surface-treated\u003c\/strong\u003e — for premium corrosion resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompanion ranges at AIMS\u003c\/h3\u003e\n\u003cp\u003eSafety washers sit alongside our broader fastener range — see \u003ca href=\"\/en-nz\/collections\/schnorr\"\u003eSchnorr\u003c\/a\u003e, \u003ca href=\"\/en-nz\/collections\/nord-lock\"\u003eNord-Lock\u003c\/a\u003e, \u003ca href=\"\/en-nz\/collections\/retaining-washers\"\u003eretaining washers\u003c\/a\u003e, and \u003ca href=\"\/en-nz\/collections\/mudguard-washers\"\u003emudguard washers\u003c\/a\u003e for the related products.\u003c\/p\u003e\n\n\u003cp\u003eNeed help selecting safety washers for a specific application or vibration concern? \u003ca href=\"\/en-nz\/pages\/contact-us\"\u003econtact our team\u003c\/a\u003e — we'll match by load, vibration severity, and service environment.\u003c\/p\u003e","products":[{"product_id":"type-s-safety-washer-serrated-plain-black","title":"Type S Safety Washer Serrated Plain \/ Black","description":"\u003cdiv style=\"max-width:680px;width:100%;padding:12px 0;font-family:Arial,sans-serif;\"\u003e\n\u003cdiv style=\"display:flex;align-items:flex-start;justify-content:space-between;border-top:1px solid #e0e0e0;border-bottom:1px solid #e0e0e0;padding:16px 0;margin-bottom:24px;\"\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e◆\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eHolds bolt preload against vibration and dynamic loading\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e●\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eWedge-locking cam angle exceeds bolt thread pitch so any loosening tightens the joint\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e▲\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003ePairs with matched bolt and washer for fast installation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:14px;line-height:1.6;color:#444;margin:0;\"\u003eBuilt for critical bolted joints where bolt failure is not an option, Type S Safety Washer Serrated Plain Black secures preload against vibration and dynamic load through cam-action wedge locking. Used in rail, mining, heavy plant, renewables and structural engineering. AIMS Industrial stocks the Hobson locking washer range for engineering, maintenance and procurement teams.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Schnorr","offers":[{"title":"M8","offer_id":49326160314645,"sku":"A0141360","price":24.33,"currency_code":"AUD","in_stock":true},{"title":"M10","offer_id":49326160347413,"sku":"A0141361","price":18.94,"currency_code":"AUD","in_stock":true},{"title":"M36","offer_id":49326160380181,"sku":"A0141362","price":36.29,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/5191\/1957\/files\/type-s-safety-washer-serrated-plain-black-2361438.jpg?v=1779088941"},{"product_id":"type-s-safety-washer-serrated-zinc-plated","title":"Type S Safety Washer Serrated Zinc Plated","description":"\u003cdiv style=\"max-width:680px;width:100%;padding:12px 0;font-family:Arial,sans-serif;\"\u003e\n\u003cdiv style=\"display:flex;align-items:flex-start;justify-content:space-between;border-top:1px solid #e0e0e0;border-bottom:1px solid #e0e0e0;padding:16px 0;margin-bottom:24px;\"\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e◆\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eHolds bolt preload against vibration and dynamic loading\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e●\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eWedge-locking cam angle exceeds bolt thread pitch so any loosening tightens the joint\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e▲\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003ePairs with matched bolt and washer for fast installation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:14px;line-height:1.6;color:#444;margin:0;\"\u003eEngineered for vibration-resistant bolted joints, Type S Safety Washer Serrated Zinc Plated holds preload in critical assemblies where loosening cannot be tolerated. The wedge-locking cam angle is larger than the bolt thread pitch, so any rotation actually increases clamping tension. Suited to heavy machinery, rail, mining, wind energy, offshore and structural engineering assemblies that cannot afford bolt failure. Stocked at AIMS Industrial as part of the Hobson engineering fastener range.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Schnorr","offers":[{"title":"M2","offer_id":49326165688597,"sku":"A0141363","price":25.08,"currency_code":"AUD","in_stock":false},{"title":"M3","offer_id":49326165721365,"sku":"A0141364","price":25.08,"currency_code":"AUD","in_stock":true},{"title":"M4","offer_id":49326165754133,"sku":"A0141365","price":25.08,"currency_code":"AUD","in_stock":true},{"title":"M36","offer_id":49326165786901,"sku":"A0141366","price":43.8,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/5191\/1957\/files\/type-s-safety-washer-serrated-zinc-plated-8383050.jpg?v=1779088940"},{"product_id":"type-vs-safety-washer-serrated-plain-black","title":"Type VS Safety Washer Serrated Plain \/ Black","description":"\u003cdiv style=\"max-width:680px;width:100%;padding:12px 0;font-family:Arial,sans-serif;\"\u003e\n\u003cdiv style=\"display:flex;align-items:flex-start;justify-content:space-between;border-top:1px solid #e0e0e0;border-bottom:1px solid #e0e0e0;padding:16px 0;margin-bottom:24px;\"\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e◆\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eHolds bolt preload against vibration and dynamic loading\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e●\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eWedge-locking cam angle exceeds bolt thread pitch so any loosening tightens the joint\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e▲\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003ePairs with matched bolt and washer for fast installation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:14px;line-height:1.6;color:#444;margin:0;\"\u003eBuilt for critical bolted joints where bolt failure is not an option, Type VS Safety Washer Serrated Plain Black secures preload against vibration and dynamic load through cam-action wedge locking. Used in rail, mining, heavy plant, renewables and structural engineering. AIMS Industrial stocks the Hobson locking washer range for engineering, maintenance and procurement teams.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Schnorr","offers":[{"title":"M5","offer_id":49326175093013,"sku":"A0141367","price":25.08,"currency_code":"AUD","in_stock":true},{"title":"M6","offer_id":49326175125781,"sku":"A0141368","price":22.13,"currency_code":"AUD","in_stock":true},{"title":"M8","offer_id":49326175158549,"sku":"A0141369","price":25.08,"currency_code":"AUD","in_stock":true},{"title":"M10","offer_id":49326175191317,"sku":"A0141370","price":29.52,"currency_code":"AUD","in_stock":true},{"title":"M12","offer_id":49326175224085,"sku":"A0141371","price":35.07,"currency_code":"AUD","in_stock":true},{"title":"M14","offer_id":49326175256853,"sku":"A0141372","price":42.26,"currency_code":"AUD","in_stock":true},{"title":"M16","offer_id":49326175289621,"sku":"A0141373","price":34.43,"currency_code":"AUD","in_stock":true},{"title":"M18","offer_id":49326175322389,"sku":"A0141374","price":57.63,"currency_code":"AUD","in_stock":true},{"title":"M20","offer_id":49326175355157,"sku":"A0141375","price":66.33,"currency_code":"AUD","in_stock":true},{"title":"M22","offer_id":49326175387925,"sku":"A0141376","price":73.28,"currency_code":"AUD","in_stock":false},{"title":"M24","offer_id":49326175420693,"sku":"A0141377","price":45.05,"currency_code":"AUD","in_stock":true},{"title":"M27","offer_id":49326175453461,"sku":"A0141378","price":57.63,"currency_code":"AUD","in_stock":true},{"title":"M30","offer_id":49326175486229,"sku":"A0141379","price":32.54,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/5191\/1957\/files\/type-vs-safety-washer-serrated-plain-black-7182402.jpg?v=1779088945"},{"product_id":"type-vs-safety-washer-serrated-zinc-plated","title":"Type VS Safety Washer Serrated Zinc Plated","description":"\u003cdiv style=\"max-width:680px;width:100%;padding:12px 0;font-family:Arial,sans-serif;\"\u003e\n\u003cdiv style=\"display:flex;align-items:flex-start;justify-content:space-between;border-top:1px solid #e0e0e0;border-bottom:1px solid #e0e0e0;padding:16px 0;margin-bottom:24px;\"\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e◆\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eHolds bolt preload against vibration and dynamic loading\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e●\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eWedge-locking cam angle exceeds bolt thread pitch so any loosening tightens the joint\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e▲\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003ePairs with matched bolt and washer for fast installation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:14px;line-height:1.6;color:#444;margin:0;\"\u003eBuilt for critical bolted joints where bolt failure is not an option, Type VS Safety Washer Serrated Zinc Plated secures preload against vibration and dynamic load through cam-action wedge locking. Used in rail, mining, heavy plant, renewables and structural engineering. AIMS Industrial stocks the Hobson locking washer range for engineering, maintenance and procurement teams.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Schnorr","offers":[{"title":"M5","offer_id":49326188003605,"sku":"A0141380","price":25.08,"currency_code":"AUD","in_stock":true},{"title":"M6","offer_id":49326188036373,"sku":"A0141381","price":25.08,"currency_code":"AUD","in_stock":true},{"title":"M8","offer_id":49326188069141,"sku":"A0141382","price":30.01,"currency_code":"AUD","in_stock":true},{"title":"M10","offer_id":49326188101909,"sku":"A0141383","price":28.05,"currency_code":"AUD","in_stock":true},{"title":"M12","offer_id":49326188134677,"sku":"A0141384","price":37.53,"currency_code":"AUD","in_stock":true},{"title":"M14","offer_id":49326188167445,"sku":"A0141385","price":55.37,"currency_code":"AUD","in_stock":true},{"title":"M16","offer_id":49326188200213,"sku":"A0141386","price":41.32,"currency_code":"AUD","in_stock":true},{"title":"M18","offer_id":49326188232981,"sku":"A0141387","price":73.81,"currency_code":"AUD","in_stock":true},{"title":"M20","offer_id":49326188265749,"sku":"A0141388","price":80.19,"currency_code":"AUD","in_stock":true},{"title":"M22","offer_id":49326188298517,"sku":"A0141389","price":38.42,"currency_code":"AUD","in_stock":true},{"title":"M24","offer_id":49326188331285,"sku":"A0141390","price":38.42,"currency_code":"AUD","in_stock":false},{"title":"M27","offer_id":49326188364053,"sku":"A0141391","price":32.66,"currency_code":"AUD","in_stock":true},{"title":"M30","offer_id":49326188396821,"sku":"A0141392","price":34.58,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/5191\/1957\/files\/type-vs-safety-washer-serrated-zinc-plated-3049877.jpg?v=1779088942"}],"url":"https:\/\/aimsindustrial.com.au\/en-nz\/collections\/safety-washers.oembed","provider":"AIMS Industrial Supplies","version":"1.0","type":"link"}