{"title":"DIN 9021 Fender Washers (Large OD) — A4 Marine Stainless Steel (SUS316), Whitened \u0026 Passivated","description":"\u003ch1\u003eDIN 9021 Fender Washers (Large OD) — A4 Marine Stainless Steel (SUS316)\u003c\/h1\u003e\n\n\u003cp\u003eFULLERKREG DIN 9021 A4 fender washers are manufactured from A4 stainless steel (SUS316) with a whitened and passivated surface finish. DIN 9021 specifies a large outer diameter washer — the outer diameter (d2) is approximately 3× the bolt nominal diameter — providing a significantly larger bearing area than standard DIN 125A washers to prevent pull-through and embedment in soft or thin materials such as timber, plastic, plywood, thin sheet metal, and composite panels.\u003c\/p\u003e\n\n\u003cp\u003eA4 (SUS316) stainless steel contains 2–3% molybdenum (Mo), giving it a Pitting Resistance Equivalent Number (PREN) of ~24–26 — significantly higher than A2 SUS304 (~18–20). This makes A4 the definitive choice for marine, offshore, coastal, and chloride-containing environments where A2 may suffer pitting corrosion. Combined with the large bearing area of DIN 9021, these washers are the preferred choice for marine timber structures, coastal cladding, offshore platforms, and any outdoor application in high-humidity or salt-air environments.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIN 9021 (Large OD flat washer, outer diameter ≈ 3× bolt diameter)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLarge outer diameter (fender \/ penny) washer — plain flat, no chamfer\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA4 Stainless Steel \/ SUS316 \/ 1.4401\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurface Finish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhitened \u0026amp; Passivated\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM5 – M24\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOD Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOuter diameter ≈ 3× nominal bolt diameter (vs ~2× for DIN 125A)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHardness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤ 200 HV\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePREN (Pitting Resistance)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~24–26 — significantly higher than A2 SUS304 (~18–20)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCorrosion Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExcellent — superior to A2 in marine, chloride, and chemical environments\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMagnetic\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSlightly magnetic after cold working\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Pairing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA4 stainless bolts (DIN 931 \/ DIN 933 A4) and nuts (DIN 934 A4) for full material compatibility\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRelated Standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIN 125A A4 (standard OD)  |  ISO 7093 (large washer series)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Gallery\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:25%; text-align:center; padding:12px;\"\u003e[Product Photo 1]\u003c\/td\u003e\n      \u003ctd style=\"width:25%; text-align:center; padding:12px;\"\u003e[Product Photo 2]\u003c\/td\u003e\n      \u003ctd style=\"width:25%; text-align:center; padding:12px;\"\u003e[Product Photo 3]\u003c\/td\u003e\n      \u003ctd style=\"width:25%; text-align:center; padding:12px;\"\u003e[Product Photo 4]\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eDimensions — DIN 9021\u003c\/h2\u003e\n\u003cp\u003eAll dimensions in millimeters (mm). Data per DIN 9021 standard. Dimensions are identical for A2 and A4 grades.\u003c\/p\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eNominal Size (Bolt d)\u003c\/th\u003e\n      \u003cth\u003ed1 — Inner Ø (mm)\u003c\/th\u003e\n      \u003cth\u003ed2 — Outer Ø (mm)\u003c\/th\u003e\n      \u003cth\u003eh — Thickness (mm)\u003c\/th\u003e\n      \u003cth\u003eWeight (kg \/ 1000 pcs)\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\u003e5.5\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e1.0\u003c\/td\u003e\n\u003ctd\u003e0.73\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\u003e18\u003c\/td\u003e\n\u003ctd\u003e1.6\u003c\/td\u003e\n\u003ctd\u003e1.98\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\u003e24\u003c\/td\u003e\n\u003ctd\u003e2.0\u003c\/td\u003e\n\u003ctd\u003e4.40\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\u003e30\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003e8.50\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e13.0\u003c\/td\u003e\n\u003ctd\u003e37\u003c\/td\u003e\n\u003ctd\u003e3.0\u003c\/td\u003e\n\u003ctd\u003e15.2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM14\u003c\/td\u003e\n\u003ctd\u003e15.0\u003c\/td\u003e\n\u003ctd\u003e44\u003c\/td\u003e\n\u003ctd\u003e3.0\u003c\/td\u003e\n\u003ctd\u003e21.3\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e17.0\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e3.0\u003c\/td\u003e\n\u003ctd\u003e27.3\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM20\u003c\/td\u003e\n\u003ctd\u003e21.0\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e4.0\u003c\/td\u003e\n\u003ctd\u003e53.6\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM24\u003c\/td\u003e\n\u003ctd\u003e25.0\u003c\/td\u003e\n\u003ctd\u003e72\u003c\/td\u003e\n\u003ctd\u003e4.0\u003c\/td\u003e\n\u003ctd\u003e76.9\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003e* d1 = inner diameter (clearance hole); d2 = outer diameter; h = nominal thickness. All dimensions per DIN 9021. Weights are approximate based on A4 stainless steel density (7.98 g\/cm³).\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eA4 (SUS316) vs A2 (SUS304) — Why Choose A4 for Marine \u0026amp; Outdoor Applications?\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eProperty\u003c\/th\u003e\n      \u003cth\u003eA4 — SUS316 (This Product)\u003c\/th\u003e\n      \u003cth\u003eA2 — SUS304\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMolybdenum (Mo) content\u003c\/td\u003e\n\u003ctd\u003e2.0 – 3.0%\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePREN (Pitting Resistance)\u003c\/td\u003e\n\u003ctd\u003e~24–26\u003c\/td\u003e\n\u003ctd\u003e~18–20\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eChloride pitting resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCrevice corrosion resistance\u003c\/td\u003e\n\u003ctd\u003eVery good\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMarine \/ offshore suitability\u003c\/td\u003e\n\u003ctd\u003eYes — preferred grade\u003c\/td\u003e\n\u003ctd\u003eLimited — may pit in high-chloride\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCoastal \/ salt-air environments\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood for low-salinity only\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTimber treatment chemicals\u003c\/td\u003e\n\u003ctd\u003eExcellent resistance\u003c\/td\u003e\n\u003ctd\u003eMay corrode with ACQ\/CCA treated timber\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTensile strength (annealed)\u003c\/td\u003e\n\u003ctd\u003e≥ 515 MPa\u003c\/td\u003e\n\u003ctd\u003e≥ 500 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDensity\u003c\/td\u003e\n\u003ctd\u003e7.98 g\/cm³\u003c\/td\u003e\n\u003ctd\u003e7.93 g\/cm³\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eDIN 9021 vs DIN 125A — Large OD vs Standard OD\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eProperty\u003c\/th\u003e\n      \u003cth\u003eDIN 9021 (This Product)\u003c\/th\u003e\n      \u003cth\u003eDIN 125A (Standard)\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOuter diameter ratio\u003c\/td\u003e\n\u003ctd\u003e~3× bolt diameter\u003c\/td\u003e\n\u003ctd\u003e~2× bolt diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM12 outer diameter\u003c\/td\u003e\n\u003ctd\u003e37 mm\u003c\/td\u003e\n\u003ctd\u003e24 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBearing area (M12)\u003c\/td\u003e\n\u003ctd\u003e~940 mm²\u003c\/td\u003e\n\u003ctd\u003e~320 mm² (~3× smaller)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePull-through resistance\u003c\/td\u003e\n\u003ctd\u003eHigh — for soft\/thin materials\u003c\/td\u003e\n\u003ctd\u003eStandard — for hard materials\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eTimber, plastic, plywood, thin sheet, composite\u003c\/td\u003e\n\u003ctd\u003eSteel, concrete, hard structural materials\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eISO equivalent\u003c\/td\u003e\n\u003ctd\u003eISO 7093\u003c\/td\u003e\n\u003ctd\u003eISO 7089\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eMaterial \u0026amp; Surface Properties — A4 \/ SUS316\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaterial Designation\u003c\/td\u003e\n\u003ctd\u003eA4 \/ SUS316 \/ 1.4401 \/ 0Cr17Ni12Mo2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eChromium Content\u003c\/td\u003e\n\u003ctd\u003e16.0 – 18.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNickel Content\u003c\/td\u003e\n\u003ctd\u003e10.0 – 14.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMolybdenum Content\u003c\/td\u003e\n\u003ctd\u003e2.0 – 3.0% — key differentiator vs A2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTensile Strength\u003c\/td\u003e\n\u003ctd\u003e≥ 515 MPa (annealed)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003e≤ 200 HV\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePREN\u003c\/td\u003e\n\u003ctd\u003e~24–26 (vs ~18–20 for A2 SUS304)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSurface Finish\u003c\/td\u003e\n\u003ctd\u003eWhitened \u0026amp; Passivated\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCorrosion Resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent — superior chloride pitting and crevice corrosion resistance vs A2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e−50°C to +300°C (continuous service)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMagnetic\u003c\/td\u003e\n\u003ctd\u003eSlightly magnetic after cold working\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDensity\u003c\/td\u003e\n\u003ctd\u003e7.98 g\/cm³\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e🚢 \u003cstrong\u003eMarine timber structures\u003c\/strong\u003e — A4 is the mandatory grade for fastening in marine timber (jetties, pontoons, boat building) where seawater splash and salt air demand superior corrosion resistance; large OD prevents pull-through in timber\u003c\/li\u003e\n  \u003cli\u003e🌊 \u003cstrong\u003eCoastal \u0026amp; offshore cladding\u003c\/strong\u003e — large OD distributes load across thin cladding panels in coastal buildings and offshore structures; A4 resists salt-air pitting\u003c\/li\u003e\n  \u003cli\u003e🏗️ \u003cstrong\u003eTreated timber construction\u003c\/strong\u003e — ACQ and CCA timber preservatives are highly corrosive to A2 stainless; A4 provides the necessary resistance for treated timber fastening\u003c\/li\u003e\n  \u003cli\u003e🌳 \u003cstrong\u003eOutdoor \u0026amp; garden structures — coastal\u003c\/strong\u003e — pergolas, decking, fencing, and garden structures in coastal or high-humidity environments where A2 may corrode\u003c\/li\u003e\n  \u003cli\u003e🧱 \u003cstrong\u003eMarine composite \u0026amp; GRP panels\u003c\/strong\u003e — large OD prevents pull-through in fibreglass, GRP, and composite marine panels; A4 resists marine environment corrosion\u003c\/li\u003e\n  \u003cli\u003e🍼 \u003cstrong\u003eFood \u0026amp; beverage processing\u003c\/strong\u003e — A4 SUS316 preferred grade for hygienic applications; large OD suitable for fastening insulation panels and equipment covers\u003c\/li\u003e\n  \u003cli\u003e🍁 \u003cstrong\u003eChemical plant — outdoor\u003c\/strong\u003e — large OD for thin panel and cladding fastening in outdoor chemical plant environments where chloride exposure demands A4\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Why choose A4 over A2 for DIN 9021 fender washers?\u003c\/strong\u003e\u003cbr\u003e\nA: A4 (SUS316) contains 2–3% molybdenum, giving it a PREN of ~24–26 vs ~18–20 for A2 (SUS304). In practical terms, A4 resists chloride pitting and crevice corrosion significantly better than A2 — making it the preferred choice for marine, coastal, offshore, and treated timber applications. DIN 9021 fender washers are frequently used in timber and cladding applications that are exposed to outdoor environments, where A4 provides the necessary long-term corrosion resistance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Are A4 DIN 9021 washers required for treated timber?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. Modern timber preservatives — particularly ACQ (Alkaline Copper Quaternary) and CCA (Copper Chrome Arsenic) — are highly corrosive to carbon steel and can also corrode A2 stainless steel over time. A4 (SUS316) stainless steel provides significantly better resistance to these preservative chemicals and is the recommended grade for fastening in treated timber per most timber construction standards.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between DIN 9021 and DIN 125A?\u003c\/strong\u003e\u003cbr\u003e\nA: DIN 9021 has an outer diameter of approximately 3× the bolt nominal diameter, vs approximately 2× for DIN 125A. For M12: DIN 9021 d2 = 37 mm vs DIN 125A d2 = 24 mm — approximately 3× greater bearing area. DIN 9021 is used where the larger bearing area is needed to prevent pull-through in soft materials (timber, plastic, thin sheet). Both have the same inner diameter for the same bolt size.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Are A4 DIN 9021 washers suitable for seawater immersion?\u003c\/strong\u003e\u003cbr\u003e\nA: A4 (SUS316) provides significantly better seawater resistance than A2 due to its molybdenum content. For splash zone, tidal, and above-waterline marine applications, A4 is the correct choice. For continuous seawater immersion or subsea applications, even A4 can suffer crevice corrosion in stagnant conditions — specify Duplex 2205 or Super Duplex for fully immersed applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the ISO equivalent of DIN 9021?\u003c\/strong\u003e\u003cbr\u003e\nA: DIN 9021 is equivalent to ISO 7093 (large washer series). Both specify a large outer diameter washer with d2 ≈ 3× bolt diameter. DIN 9021 is the German national standard; ISO 7093 is the international equivalent.\u003c\/p\u003e","products":[],"url":"https:\/\/www.fullerkr.com\/collections\/din-9021-fender-washer-a4-stainless.oembed","provider":"Fullerkreg Fasteners","version":"1.0","type":"link"}