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Rostfri.nu 1 meter långa DIN 976-gängstänger i höghållfast stål klass 8.8 med förzinkad yta för bygg- och konstruktionsarbeten inomhus.

Threaded rod 1m | Zinc-plated | DIN 976

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SKU: 103069
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Description

Do you need a threaded rod that provides a strong and reliable fastening for assembly, construction, and repair? The electro-galvanized (FZB) DIN 976 threaded rod in high-tensile steel, grade 8.8 according to ISO 898-1, is designed to provide stability and strength in construction and industrial environments. The electro-galvanized surface treatment provides effective protection against corrosion in dry, indoor environments, while the rod retains its mechanical strength under load.

AREA OF USE

Perfect for construction, installation, machinery assembly, and furniture structures where a strong and adjustable fastening is required. The threaded rod is used together with nuts and washers to create flexible and strong connections. Easy to cut to the desired length and install using standard tools.

TECHNICAL SPECIFICATIONS

Product type: Threaded rod
Standard: DIN 976
Quality: Steel
Material grade: 8.8 according to ISO 898-1
Thread type: Metric ISO thread
Surface treatment: Electro-galvanized (FZB)
Head shape: Not applicable
Grip type: Not applicable

FREQUENTLY ASKED QUESTIONS (FAQ)

What does strength class 8.8 mean for an electro-galvanized threaded rod?

The Grade 8.8 marking according to ISO 898-1 indicates the mechanical properties of high-tensile steel:

  • High yield and tensile strength: The first digit (8) indicates a nominal tensile strength of 8 × 100 = 800 MPa. The second digit (.8) indicates that the yield strength is 80% of the tensile strength, i.e., 640 MPa.

  • Twice as strong as a standard rod (4.8): Compared to simpler threaded rods made of standard steel (grade 4.8), grade 8.8 can withstand twice the load before deforming or failing.

  • Construction and industrial applications: It is the standard choice for load-bearing steel structures, heavy-duty suspensions, machinery assembly, rock bolts, and chemical anchors where high tensile and shear forces occur.

What does electro-galvanizing (FZB / C1–C2) mean and where should the rod be used?

Electro-galvanizing is an electrolytic surface treatment that applies a thin, protective zinc layer to the steel surface:

  • Intended for indoor environments (Corrosivity class C1/C2): Provides excellent rust protection in dry indoor environments, heated premises, workshops, and warehouses.

  • Precision in the thread: Because the zinc layer is very thin, the tight tolerances of the thread are not affected. This allows standard nuts and coupling nuts to run perfectly freely without binding.

  • Limitations outdoors: In damp outdoor environments, rain, or areas with condensation, hot-dip galvanized (HDG/FZV) or stainless/acid-proof rods (A2/A4) should be used instead of electro-galvanized.

How do you cut and install a high-tensile 8.8 threaded rod without damaging the thread?

  1. Nut as a thread chaser: Screw a steel nut (grade 8) onto the threaded rod below the cut point before you cut. When you unscrew the nut after cutting, it automatically realigns the first thread turns at the cut.

  2. Cutting instructions: Use an angle grinder with a thin cutting disc for steel and lightly chamfer the cut edge with a file to remove burrs.

  3. Match the strength class: Always use nuts in Grade 8 (e.g., DIN 934 steel 8 FZB) and washers with sufficient hardness (at least 200 HV) so that the nut threads are not stripped before the rod reaches its maximum load-bearing capacity.