{"title":"Linchpins","description":"\u003ch2\u003eLinchpin Selection — Quick Reference\u003c\/h2\u003e\n\u003cp\u003eLinchpins are safety retention pins — prevent axle pins + clevis pins + attachment bolts from working loose or withdrawing under vibration + transport movement. Standard fastener on trailers + agricultural + tow bars + machinery wherever pin connection must be retained positively.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eLinchpin Type\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003cth\u003eCommon Size Range\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Linchpin (Spring-Wire Loop)\u003c\/td\u003e\n\u003ctd\u003eGeneral workshop + light agricultural\u003c\/td\u003e\n\u003ctd\u003e5mm – 16mm pin diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeavy-Duty Linchpin\u003c\/td\u003e\n\u003ctd\u003eTrailer + heavy agricultural + tow bar\u003c\/td\u003e\n\u003ctd\u003e10mm – 25mm pin diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBridge Pin (Slotted with Linchpin)\u003c\/td\u003e\n\u003ctd\u003eClevis + agricultural implement attach\u003c\/td\u003e\n\u003ctd\u003ePer equipment spec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLynch Pin (Bow-Style)\u003c\/td\u003e\n\u003ctd\u003eUK + EU agricultural standard\u003c\/td\u003e\n\u003ctd\u003e6mm – 19mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR-Clip \/ Hairpin Cotter\u003c\/td\u003e\n\u003ctd\u003eLight-duty retention — easy removal\u003c\/td\u003e\n\u003ctd\u003e2mm – 8mm — see \u003ca href=\"\/en-nz\/collections\/cotter-pins\"\u003ecotter pins\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuick-Release Pin (Ball-Lock)\u003c\/td\u003e\n\u003ctd\u003eFrequent attach\/detach — push-button release\u003c\/td\u003e\n\u003ctd\u003e4mm – 25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLanyard Linchpin\u003c\/td\u003e\n\u003ctd\u003eTethered linchpin — prevents loss\u003c\/td\u003e\n\u003ctd\u003ePer pin size + cable length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eCritical:\u003c\/strong\u003e Linchpin OD must match the cross-hole in the pin\/bolt it retains. Spring-wire loop must seat fully into the groove — partial seating = pin can vibrate out. \u003cstrong\u003eUse case:\u003c\/strong\u003e trailer tow ball pin + 3-point hitch + agricultural implement attach + clevis-connected machinery. Visual inspection before EVERY transport movement. Companion: \u003ca href=\"\/en-nz\/collections\/clevis-pins\"\u003eclevis pins\u003c\/a\u003e, \u003ca href=\"\/en-nz\/collections\/cotter-pins\"\u003ecotter pins\u003c\/a\u003e, \u003ca href=\"\/en-nz\/collections\/coupling-pins\"\u003ecoupling pins\u003c\/a\u003e, \u003ca href=\"\/en-nz\/blogs\/product-guides\/split-pin-cotter-pin-guide\"\u003esplit + cotter pin guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eLinchpins for Trailers and Agricultural Equipment\u003c\/h2\u003e\n\u003cp\u003eLinchpins are safety retention pins that prevent axle pins, clevis pins, and attachment bolts from working loose or withdrawing under vibration, load, and the movement experienced during transport and field operation. They are a standard safety fastener on trailers, agricultural equipment, tow bars, and industrial machinery wherever a pin connection must be retained positively against accidental release. AIMS Industrial stocks linchpins for trade, agricultural, and industrial applications.\u003c\/p\u003e\n\n\u003ch3\u003eHow Linchpins Work\u003c\/h3\u003e\n\u003cp\u003eA linchpin is inserted through a hole in the end of an axle pin or clevis pin, with the spring or clip design of the linchpin providing enough resistance to prevent it from vibrating out under normal operating conditions while still allowing removal by hand when the attachment needs to be released. The spring-clip body wraps around the shaft of the pin it is retaining, providing a positive mechanical lock that holds the primary pin in position without requiring tools to apply or remove. This make-and-break design is essential on connections that need to be assembled and disassembled repeatedly in the field — implement attachments, tow ball couplings, and trailer connections that are coupled and uncoupled regularly.\u003c\/p\u003e\n\n\u003ch3\u003eApplications in Agriculture and Transport\u003c\/h3\u003e\n\u003cp\u003eOn agricultural equipment, linchpins are found on PTO shaft couplings, three-point linkage pins, implement hitches, and hydraulic cylinder clevis attachments. The vibration and shock loads generated by field work make positive pin retention essential — a lost linchpin on a working PTO shaft or linkage pin creates both an immediate mechanical failure and a serious safety hazard. On trailers and tow vehicles, linchpins retain coupling pins, safety chain attachment points, and jockey wheel adjustment pins. Carrying spare linchpins in the field kit is low-cost insurance against a failure that would otherwise strand equipment mid-operation.\u003c\/p\u003e\n\n\u003ch3\u003eMaterial and Size Selection\u003c\/h3\u003e\n\u003cp\u003eLinchpins are typically manufactured from spring steel or galvanised steel. Spring steel provides the clip tension needed to retain the pin against vibration and the resilience to maintain that tension through repeated use. Galvanised finishes provide adequate corrosion resistance for most outdoor agricultural and transport use. Size selection must match the diameter of the axle pin or clevis pin being retained — the linchpin hole must fit the pin without excessive clearance that would allow side movement, and the clip diameter must wrap around the pin securely. For marine, coastal, or chemical-exposure environments, stainless steel linchpins provide significantly improved corrosion resistance.\u003c\/p\u003e\n\n\u003ch3\u003eStocking Linchpins for Field Operations\u003c\/h3\u003e\n\u003cp\u003eLinchpins are a low-cost fastener that are easy to lose and expensive to be without. Agricultural and transport operations should carry an adequate supply of the correct linchpin sizes for their equipment on the vehicle and at the workshop. AIMS Industrial is an Australian business supplying industrial fasteners and hardware since 1988. For linchpin specifications, sizing assistance, or bulk supply pricing, \u003ca href=\"\/en-nz\/pages\/contact-us\"\u003econtact our team\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"linch-pin-304-stainless-steel","title":"Linch Pin - 304 Stainless Steel","description":"\u003ch2 id=\"quick-answer\"\u003eLinch Pin\u003c\/h2\u003e\n\u003cp\u003eA linch pin is a quick-release fastener used through a shaft or axle to keep a wheel, hitch or implement in place. A spring-loaded retaining clip on the head folds over to lock the pin against vibration, so it can be removed by hand for fast changeovers on trailers, machinery and farm implements. This is a 304 stainless steel linch pin, sized M4 to M10, giving everyday corrosion resistance for indoor, outdoor and food-contact use.\u003c\/p\u003e\n\u003cdiv style=\"max-width:680px;width:100%;padding:8px 0;font-family:Arial,sans-serif\"\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px;padding:8px 0\"\u003e\n\u003cdiv style=\"padding:0 8px;display:flex;align-items:flex-start;gap:8px\"\u003e\n\u003cspan style=\"font-size:14px;color:#222;line-height:1.4;flex:0 0 auto\"\u003e◆\u003c\/span\u003e\u003cspan style=\"font-size:14px;color:#333;line-height:1.4\"\u003eGrade 304 stainless for everyday corrosion resistance\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding:0 8px;display:flex;align-items:flex-start;gap:8px\"\u003e\n\u003cspan style=\"font-size:14px;color:#222;line-height:1.4;flex:0 0 auto\"\u003e●\u003c\/span\u003e\u003cspan style=\"font-size:14px;color:#333;line-height:1.4\"\u003eSize range M4 to M10\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding:0 8px;display:flex;align-items:flex-start;gap:8px\"\u003e\n\u003cspan style=\"font-size:14px;color:#222;line-height:1.4;flex:0 0 auto\"\u003e▲\u003c\/span\u003e\u003cspan style=\"font-size:14px;color:#333;line-height:1.4\"\u003eSpring-loaded retaining clip, fast quick-release locking\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top:16px\"\u003e\u003cp style=\"font-size:14px;line-height:1.6;color:#333;margin:0\"\u003eGrade 304 stainless steel delivers reliable corrosion resistance for indoor, outdoor and food-contact use, giving this linch pin a long working life in standard Australian conditions. The spring clip retains the pin against vibration, so this split pin is the standard quick-release fix on trailers, machinery and farm implements.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Inox World","offers":[{"title":"M4","offer_id":49273355436309,"sku":"A0088030","price":49.1,"currency_code":"AUD","in_stock":true},{"title":"M6","offer_id":49273355469077,"sku":"A0088031","price":84.82,"currency_code":"AUD","in_stock":true},{"title":"M8","offer_id":49273355501845,"sku":"A0088032","price":35.93,"currency_code":"AUD","in_stock":true},{"title":"M10","offer_id":49273355534613,"sku":"A0088033","price":87.44,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/5191\/1957\/files\/LinchPin.png?v=1756561059"},{"product_id":"m6-316-linch-pin-stainless-steel-box-of-10","title":"M6 316 Linch Pin, Stainless Steel -Box of 10","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;\"\u003eProvides a quick-release secure pin for trailers and machinery\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;\"\u003eEngineering-grade construction with corrosion-rated finish\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;\"\u003eCompatible with standard installation tools for fast trade service\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 general engineering, trade and workshop fastening, 316 Linch Pin Stainless Steel delivers the load capacity, corrosion resistance and assembly speed demanded by the rated application. Suited to general engineering fastening, quick-release pin applications, sheet metal fabrication, hinging and pivoting joints and workshop hardware. Part of the Hobson engineering fastener range stocked at AIMS Industrial.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hobson","offers":[{"title":"Default Title","offer_id":49274320257301,"sku":"A0100139","price":61.69,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/5191\/1957\/files\/m6-316-linch-pin-stainless-steel-box-of-10-4514549.jpg?v=1781532316"},{"product_id":"champion-ca18-lynch-pin-assortment-kit-18-pieces","title":"Champion CA18 Lynch Pin Assortment Kit - 18 Pieces","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;\"\u003ePins and locates assemblies\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;\"\u003eChampion service-line stock\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;\"\u003e18-piece sorted kit\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;\"\u003eThis Champion Lynch Pin kit puts a graded range of sizes in one box, for pinning and locating assemblies. Champion-made for everyday service work. Holds 18 pieces in a labelled case.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Champion","offers":[{"title":"Default Title","offer_id":49300544553237,"sku":"A0167351","price":45.25,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/5191\/1957\/files\/champion-ca18-lynch-pin-assortment-kit-18-pieces-5306983.jpg?v=1781505247"},{"product_id":"champion-lynch-pin-zinc-plated-steel","title":"Champion Lynch Pin Zinc Plated Steel","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;\"\u003ePuts a range of fastener sizes in one organised box for fast service work\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;\"\u003eManufactured by Champion Fasteners to recognised commercial and engineering standards\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;\"\u003eCompatible with standard metric and imperial fastening across automotive, plumbing and trade service\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 fast service work, Champion Lynch Pin Zinc Plated Steel puts a range of common fastener sizes in one organised box for automotive, plumbing, mechanical and general trade tasks. Champion supplies the box and the sizes most likely to be needed in daily service work. Part of the Champion Fasteners range stocked at AIMS Industrial for trade, automotive and workshop customers.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Champion","offers":[{"title":"5mm","offer_id":49300681425173,"sku":"A0167727","price":6.49,"currency_code":"AUD","in_stock":true},{"title":"6mm","offer_id":49300681457941,"sku":"A0167728","price":6.49,"currency_code":"AUD","in_stock":true},{"title":"8mm","offer_id":49300681490709,"sku":"A0167729","price":6.69,"currency_code":"AUD","in_stock":true},{"title":"10mm","offer_id":49300681523477,"sku":"A0167730","price":6.8,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/5191\/1957\/files\/champion-lynch-pin-zinc-plated-steel-5256386.jpg?v=1781504954"},{"product_id":"gj-works-metric-lynch-pins-kit-24-pieces-gka24","title":"GJ Works Metric Lynch Pins Kit, 24 Pieces - GKA24","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;\"\u003ePuts a range of fastener sizes in one organised box for fast service work\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;\"\u003eManufactured by Champion Fasteners to recognised commercial and engineering standards\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;\"\u003eCompatible with standard metric and imperial fastening across automotive, plumbing and trade service\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;\"\u003eGJ Works Metric Lynch Pins Kit save trade time by putting the right sizes in one box. Used by mechanics, plumbers, fabricators and workshop teams who need fast access to a curated range of fasteners. Part of the Champion range stocked at AIMS Industrial.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"GJ Works","offers":[{"title":"Default Title","offer_id":49329466310933,"sku":"A0209286","price":36.58,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/5191\/1957\/files\/gj-works-metric-lynch-pins-kit-24-pieces-gka24-5260723.jpg?v=1779086888"}],"url":"https:\/\/aimsindustrial.com.au\/en-nz\/collections\/linchpins.oembed","provider":"AIMS Industrial Supplies","version":"1.0","type":"link"}