DIN 125 Flat Washer
DIN 125 Flat Washer
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Self-locking washer for secure fastening applications, DIN 25201 standard, made of durable metal.
DIN 25201 Double fold self-locking washer
NFE25511 French Anti-loose Conical Washer
NFE25511 French Anti-loose Conical Washer
Anti-loose conical washers used to secure fasteners and prevent loosening in mechanical assemblies.
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NFE25511 French Anti-loose Conical Washer
NFE25511 French Anti-loose Conical Washer
Anti-loose conical washers used to secure fasteners and prevent loosening in mechanical assemblies.

NFE25511 French Anti-loose Conical Washer

  1. Standard: NF E25-511 (French standard)
  2. Material: Spring steel, alloy steel, stainless steel (304/316); HRC42-45
  3. Structure: Conical annular body + central through hole + single/double-sided serrations
  4. Specifications: M3-M20
  5. Surface treatment: Dacromet, zinc-magnesium plating, black oxide
  6. Types: Standard (Z), enlarged (M), widened (L) – compatible with different bolt head sizes

 

Category:
Description

Core features of NFE25511 French Anti-loose Conical Washer

  1. Serrated design: Enhances friction, effective anti-loosening under vibration
  2. Conical elasticity: Provides sustained preload, compensates for material settlement
  3. Uniform force: Avoids local deformation of workpieces
  4. Easy installation: Directly fits bolts, no extra tools
  5. Wide application: Railway, machinery, electrical equipment (high-vibration environments)

 

Product Parameter (Specification)

StandardNFE 25511MaterialCarbon steel, Stainless Steel, Aluminum
Surface TreatmentDacromet, Mechanical Galvanizing, Phosphorization, PassivationSizeM3-M64
Stylebowl type/ Conical typeUnitePiece,KGS,TON
PackingBulk cartons, small boxes in cartons, Polybags in cartonsLead timeBusy season:20-30days,Slack season:10-20days

 

Product Application

NFE 25511 French anti-loose conical washer is widely used in heavy Industry, automotive industry, railway locomotive electrical assembly parts, communication equipment, electrical control cabinets, electrical equipment, elevators, assembly of railway vehicles, medical machinery and special equipment, etc. assembly industries, etc.

 

NFE25511 French Anti-loose Conical Washer for Furniture Application Scenario Table

Application FieldSpecific ScenariosStandards & GradesKey Considerations
Industrial EquipmentPrecision machinery, automation parts, electrical motor fasteners, transmission joints.NFE25511; Carbon steel 65Mn (zinc-plated), Stainless steel 304 (A2-70).French anti-loose design enhances grip; Conical elasticity resists vibration; Matches European standard fasteners.
Construction & DecorationFrench-style door/window hardware, decorative railings, curtain wall joints, aluminum profile fixes.NFE25511; Carbon steel 65Mn (hot-dip galvanized), Stainless steel 316 (A4-80).Indoor/outdoor corrosion resistance; Anti-loose for structural stability; Fits European decoration needs.
Light IndustryEuropean-standard small appliances, office furniture hardware, display racks, tool casings.NFE25511; Carbon steel 65Mn (black oxide), Stainless steel 304 (A2-70).Cost-effective for mass production; Dual anti-loose (conical + friction); Compatible with standard bolts/nuts.
DIY & MaintenanceEuropean-style home renovations, handmade mechanical projects, garden tool assemblies.NFE25511; Carbon steel 65Mn (zinc-plated), Stainless steel 304 (A2-70).User-friendly for non-professionals; Easy wrench installation; Durable for light-medium dynamic loads.

Related products

DIN6796 Conical Spring Washer
Conical spring washer for mechanical fastening applications.

DIN6796 Conical Spring Washer