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Home Nut Square Nut DIN557 Square Nut
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Keps Lock Nut with External Tooth Washer K Nut
Keps Lock Nut with External Tooth Washer K Nut
DIN557 Square Nut
Three DIN557 square nuts for mechanical assembly and fastening.
DIN557 Square Nut
Set of five stainless steel DIN557 square nuts for mechanical fastening.
Click to enlarge
DIN557 Square Nut
Three DIN557 square nuts for mechanical assembly and fastening.
DIN557 Square Nut
Set of five stainless steel DIN557 square nuts for mechanical fastening.

DIN557 Square Nut

  1. Complies with ISO 8992, DIN 557, ANSI B18.2.2; universal anti-rotation locking fasteners
  2. Material: Carbon steel (45#), stainless steel (304/316), brass; strength grades 4.8–12.9
  3. Structure: Square profile + standard thickness + internal coarse/fine thread
  4. Surface treatments: Zinc plating, black oxide, passivation, hot-dip galvanizing
  5. Size M2–M36 (matches standard bolts)
Category: Square Nut
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  • Description
Description

Core features of Square Nut

  1. Square profile: Excellent anti-rotation, fits flat mounting surfaces, no slipping during torque application.
  2. Standard thickness: Balances load-bearing capacity and installation space, reliable locking.
  3. Stable torque transmission: Flat sides fit wrenches tightly, easy to tighten/loosen.
  4. Precise thread fit: Tightly engages with standard bolts, anti-loosening under vibration.
  5. Wide application: Ideal for machinery, construction, furniture, and general fastenings requiring anti-rotation

Product Parameter (Specification)

StandardDIN,ASTM/ANSI, ISOMaterialCarbon steel, Stainless Steel,Brass,Aluminum
Surface TreatmentZinc Plated, Hop Dip Galvanized(HDG) phosphorization,

Black Oxide,Geomet,Dacroment,Nickel plated,Zinc-Nickel plated

SizeM3-M64
UnitePiece,KGS,TONPackingBulk cartons with pallet, small boxes in cartons with pallet

 

Product Application

DIN577 square nut is widely used in heavy Industry, mining, water treatment, building, construction, retail industry, general industry, PV solar system mounting, automotive industry etc.

 

DIN557 Square Nut for Furniture Application Scenario Table

Application FieldSpecific ScenariosStandards & GradesKey Considerations
Industrial EquipmentLight machine frames, conveyor system parts, electrical cabinet mounts, pipe fittings.DIN 557; Carbon steel 4.6/8.8 (zinc-plated), Stainless steel A2-70.Square shape anti-rotation; Medium load-bearing; Compatible with standard bolts.
Construction & DecorationLight steel keels, aluminum profile connections, guardrail fasteners, door/window hardware.DIN 557; Carbon steel 5.6 (hot-dip galvanized), Stainless steel A4-80.Indoor/outdoor corrosion resistance; Secure grip on thin materials; Easy on-site installation.
Light IndustryFurniture hardware joints, small tool housings, metal storage racks, die-cast part fixes.DIN 557; Carbon steel 4.6/5.6, Stainless steel A2-70.Cost-effective for mass production; Fits wrenches easily; Protects substrates from damage.
DIY & MaintenanceHome storage rack builds, wooden workbench assembly, garage tool mounts, appliance minor repairs.DIN 557; Carbon steel 4.6 (black oxide), Stainless steel A2-70.User-friendly for non-professionals; Durable for daily use; Quick assembly/disassembly.

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      • Wedge Anchor
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