{"title":"NFE 25-511 Contact Washer","description":"\u003ch1\u003eNFE 25-511 Contact Washers\u003c\/h1\u003e\n\n\u003cp\u003eFULLERKREG NFE 25-511 Serrated Contact Conical Washers are cone-shaped spring washers with radial serrations on both bearing faces. The conical profile provides elastic pre-load retention while the serrations grip mating surfaces to prevent loosening under vibration and dynamic loads. Available in multiple materials and surface treatments to suit a wide range of industrial environments.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eNFE 25-511 M-Type Series\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eM-Type\u003c\/strong\u003e (Type A) is designed for use with hex head screws and nuts, featuring the largest outer diameter in the NFE 25-511 range. Thread sizes M3–M12. Select your material and surface treatment below:\u003c\/p\u003e\n\n\u003cp\u003e\n  \u003ca href=\"\/collections\/m-type-serrated-contact-conical-washers-nfe-25511-stainless-steel-a2\"\u003e\u003cstrong\u003eM-Type Serrated Contact Conical Washers (NFE 25511) — Stainless Steel A2\u003c\/strong\u003e\u003c\/a\u003e\u003cbr\u003e\n  材质 A2 (SUS304 \/ 1.4301) · 表面钒化洗白 · M3–M12 · 耐腐蚀，适用于一般工业环境\n\u003c\/p\u003e\n\n\u003cp\u003e\n  \u003ca href=\"\/collections\/m-type-serrated-contact-conical-washers-nfe-25511-stainless-steel-a4\"\u003e\u003cstrong\u003eM-Type Serrated Contact Conical Washers (NFE 25511) — Stainless Steel A4\u003c\/strong\u003e\u003c\/a\u003e\u003cbr\u003e\n  材质 A4 (SUS316 \/ 1.4401) · 表面钒化洗白 · M3–M12 · 含锢，超强耐海水、化工腐蚀性能\n\u003c\/p\u003e\n\n\u003cp\u003e\n  \u003ca href=\"\/collections\/nfe-25-511-m-type-serrated-contact-conical-washers-430-500-hv-grade-zinc-cr3\"\u003e\u003cstrong\u003eNFE 25-511 M-Type Serrated Contact Conical Washers — 430–500 HV | Zinc Cr3\u003c\/strong\u003e\u003c\/a\u003e\u003cbr\u003e\n  材质 65Mn 弹簧钉 · 硬度 430–500 HV · 表面 Zinc Cr3（三价铬锂电镀）· M3–M12 · RoHS合规，高硬度防松动\n\u003c\/p\u003e\n\n\u003cp\u003e\n  \u003ca href=\"\/collections\/nfe-25-511-m-type-serrated-contact-conical-washers-430-500-hv-grade-zinc-yellow\"\u003e\u003cstrong\u003eNFE 25-511 M-Type Serrated Contact Conical Washers — 430–500 HV | Zinc Yellow\u003c\/strong\u003e\u003c\/a\u003e\u003cbr\u003e\n  材质 65Mn 弹簧钉 · 硬度 430–500 HV · 表面 Zinc Yellow（黄色锂电镀）· M3–M12 · 超强耐蚀（≥200h NSS）\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eSelection Guide — Material \u0026amp; Surface Treatment\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eGrade\u003c\/th\u003e\n      \u003cth\u003eMaterial\u003c\/th\u003e\n      \u003cth\u003eSurface\u003c\/th\u003e\n      \u003cth\u003eHardness\u003c\/th\u003e\n      \u003cth\u003eSalt Spray\u003c\/th\u003e\n      \u003cth\u003eRoHS\u003c\/th\u003e\n      \u003cth\u003eBest For\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003ca href=\"\/collections\/m-type-serrated-contact-conical-washers-nfe-25511-stainless-steel-a2\"\u003eA2 Stainless\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd\u003eSUS304 \/ 1.4301\u003c\/td\u003e\n      \u003ctd\u003ePassivated\u003c\/td\u003e\n      \u003ctd\u003e~200–300 HV\u003c\/td\u003e\n      \u003ctd\u003e—\u003c\/td\u003e\n      \u003ctd\u003e✅\u003c\/td\u003e\n      \u003ctd\u003eGeneral industrial, indoor\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003ca href=\"\/collections\/m-type-serrated-contact-conical-washers-nfe-25511-stainless-steel-a4\"\u003eA4 Stainless\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd\u003eSUS316 \/ 1.4401\u003c\/td\u003e\n      \u003ctd\u003ePassivated\u003c\/td\u003e\n      \u003ctd\u003e~200–300 HV\u003c\/td\u003e\n      \u003ctd\u003e—\u003c\/td\u003e\n      \u003ctd\u003e✅\u003c\/td\u003e\n      \u003ctd\u003eMarine, chemical, coastal\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003ca href=\"\/collections\/nfe-25-511-m-type-serrated-contact-conical-washers-430-500-hv-grade-zinc-cr3\"\u003e65Mn Zinc Cr3\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd\u003e65Mn Spring Steel\u003c\/td\u003e\n      \u003ctd\u003eZinc Cr3\u003c\/td\u003e\n      \u003ctd\u003e430–500 HV\u003c\/td\u003e\n      \u003ctd\u003e≥120h\u003c\/td\u003e\n      \u003ctd\u003e✅\u003c\/td\u003e\n      \u003ctd\u003eHigh pre-load, RoHS supply chains\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003ca href=\"\/collections\/nfe-25-511-m-type-serrated-contact-conical-washers-430-500-hv-grade-zinc-yellow\"\u003e65Mn Zinc Yellow\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd\u003e65Mn Spring Steel\u003c\/td\u003e\n      \u003ctd\u003eZinc Yellow\u003c\/td\u003e\n      \u003ctd\u003e430–500 HV\u003c\/td\u003e\n      \u003ctd\u003e≥200h\u003c\/td\u003e\n      \u003ctd\u003e⚠️ Cr6\u003c\/td\u003e\n      \u003ctd\u003eMax corrosion protection, general industrial\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eAbout NFE 25-511\u003c\/h2\u003e\n\n\u003cp\u003eNFE 25-511 is a French national standard specifying serrated contact conical washers (also known as Schnorr-type or toothed conical washers). The standard defines three types by fastener head geometry:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType M (A)\u003c\/strong\u003e — For hex head screws and nuts · Largest OD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType B\u003c\/strong\u003e — For cylindrical head screws (socket cap) · Medium OD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType C\u003c\/strong\u003e — For flat nuts and countersunk fasteners · Smallest OD\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis series currently lists \u003cstrong\u003eType M\u003c\/strong\u003e variants. Type B and Type C variants are available — contact FULLERKREG for specifications and pricing.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Gallery\u003c\/h2\u003e\n\u003cp\u003eNFE 25-511 Serrated Contact Conical Washers — FULLERKREG\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 NFE 25-511 dimensional conformance, with DIN\/ISO cross-reference support\u003cbr\u003e\n  🔬 \u003cstrong\u003eMaterial Traceability\u003c\/strong\u003e — EN 10204 3.1 mill certificates and plating reports available on request\u003cbr\u003e\n  📦 \u003cstrong\u003eFlexible MOQ\u003c\/strong\u003e — Small batch samples to full production reels; 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, substitution advice, and custom specifications\u003cbr\u003e\n  ⚙️ \u003cstrong\u003eBroad Range\u003c\/strong\u003e — Full NFE 25-511 type range (M \/ B \/ C) across multiple materials and surface treatments\n\u003c\/p\u003e","products":[],"url":"https:\/\/www.fullerkr.com\/collections\/nfe-25-511-contact-washer.oembed","provider":"Fullerkreg Fasteners","version":"1.0","type":"link"}