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Sexkantsmuttrar ISO 4032 i höghållfast elförzinkat stål i olika storlekar med blank ytfinish för säkra skruvförband.
Teknisk måttritning och dimensionstabell för sexkantsmuttrar ISO 4032 i förzinkat stål i olika storlekar.
Sexkantsmuttrar ISO 4032 i höghållfast elförzinkat stål i olika storlekar med blank ytfinish för säkra skruvförband.
Teknisk måttritning och dimensionstabell för sexkantsmuttrar ISO 4032 i förzinkat stål i olika storlekar.

Hexagon nut | FZB | ISO 4032

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SKU: 100988
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Description

Do you need a standard nut that combines strength, precision, and corrosion protection at a competitive price? Electro-galvanized hexagon nut ISO 4032 is made of high-strength steel and surface-treated with zinc to resist rust and wear. It offers excellent strength and reliability in both industrial and construction applications. The nut is easy to assemble with a standard wrench and provides a stable fastening when combined with electro-galvanized screws or bolts.

FIELD OF APPLICATION

Perfect for construction, machine assembly, the automotive industry, and general industrial use. The electro-galvanized surface provides basic protection against corrosion, making the nut suitable for indoor use in dry environments. The combination of high strength and a protective surface treatment ensures a long-lasting and secure fastening.

TECHNICAL SPECIFICATIONS

Product type: Hexagon nut
Standard: ISO 4032
Quality: Steel, electro-galvanized
Property class: 8
Thread type: Metric ISO thread
Surface treatment: Electro-galvanized (bright)
Head shape: Hexagon
Drive type: External hexagon

FREQUENTLY ASKED QUESTIONS (FAQ)

What is the difference between hexagon nut ISO 4032 and the older DIN 934 standard?

ISO 4032 is the modern international standard for hexagon nuts and has largely replaced the older German standard DIN 934:

  • Slightly higher nut body: ISO 4032 is slightly taller than DIN 934. This provides more engaged thread turns, which increases the nut's shear strength and reduces the risk of the thread stripping under high tightening torques.

  • Wrench size on certain dimensions: M6 and M8 have the same wrench size in both standards, but for M10 (16 mm in ISO 4032, 17 mm in DIN 934) and M12 (18 mm vs. 19 mm), the wrench sizes differ.

  • Full compatibility: ISO 4032 nuts fit perfectly on standard M-threaded screws and threaded rods (both ISO and DIN standardized).

Why choose electro-galvanized steel (FZB) and in what environments is it best suited?

Electro-galvanization (FZB) provides an ideal balance between mechanical strength, fit, and economy:

  • Intended for indoor environments: The steel's electro-galvanized zinc layer protects against surface rust in dry and moderately humid indoor environments (Corrosivity class C1/C2).

  • Precision thread without coating thickness: Unlike hot-dip galvanizing (HDG), which builds up a thick and uneven zinc layer, electro-galvanization provides an extremely smooth and fine surface. This allows the nut to run easily and smoothly over the screw thread.

  • Not for outdoor or marine use: For constant outdoor use, pressure-treated timber, or marine environments, acid-proof A4 steel should be chosen, as rain, salt, and chemicals quickly break down the thin FZB layer.

What should be considered when mounting an ISO 4032 hexagon nut?

  1. Match property classes: Use a class 8 nut together with a class 8.8 screw. The nut should always be as strong as or stronger than the screw to prevent thread failure.

  2. Use a washer: Always install an electro-galvanized plain washer (e.g., DIN 125B 200HV) under the nut. It protects the surface of the substrate during rotation and distributes the clamping force evenly.

  3. Need for vibration locking? A standard hexagon nut lacks a built-in locking function. If the joint is exposed to vibrations or dynamic movements, you should supplement it with a locking washer (Nord-Lock), thread locker (Loctite), or choose a lock nut with a nylon ring (DIN 982/985).