Hex Nut / Finished Hex Nut (Гайка шестигранная) – DIN 934 & ISO 4032

Product Overview: The Universal Fastener

Our Hex Nuts (also known as Finished Hex Nuts in the US market) are the most fundamental component in the fastening industry. Designed to be used in conjunction with a mating bolt or screw, they clamp multiple parts together through the friction of their threads and the compression of the parts.

We manufacture millions of these nuts daily using high-speed cold forging machines, ensuring consistent dimensional accuracy and thread quality. Whether you need the classic German standard Hex Nut (DIN 934) or the modern ISO equivalent (ISO 4032), we have the tooling ready.

Russian Name: Гайка шестигранная / Гайка метрическая

Key Standards: DIN 934, ISO 4032, ANSI/ASME B18.2.2

Engineering Standards: DIN 934 vs. ISO 4032

Many customers are confused about the difference between these two standards. As a professional factory, we clarify:

• DIN 934 (The Classic): Although officially withdrawn by Germany, it remains the most popular standard in the global export market. It features a slightly lower height and specific width-across-flats dimensions.

• ISO 4032 (The Modern): This is the current international standard. The nuts are slightly taller (thicker) to provide better thread engagement and higher proof load strength.

• Recommendation: If you are supplying to the general construction market, DIN 934 is usually sufficient and more cost-effective. For government or heavy engineering projects, ISO 4032 is often mandatory.

Material Grades & Mechanical Properties

We offer nuts in various strength classes to match the grade of the bolt they are paired with. Using a nut that is weaker than the bolt can lead to thread stripping under load.

1. Metric Grades (EN ISO 898-2)

• Class 4 / 5: Low carbon steel. Paired with Class 4.8 bolts. Used for non-critical applications like fencing or furniture.

• Class 8: Medium carbon steel (quenched and tempered). Paired with Class 8.8 bolts. The industry standard for structural steel.

• Class 10: Alloy steel. Paired with Class 10.9 bolts. Used in automotive and heavy machinery.

2. Inch Grades (SAE J995)

• Grade 2: Low strength (Standard hardware).

• Grade 5: Medium strength (Automotive).

• Grade 8: High strength (Yellow Zinc plated usually).

Detailed Technical Specifications

Property	Specification Details
Product Name	Hex Nut, Finished Hex Nut, Full Nut
Russian Name	Гайка шестигранная (DIN 934)
Material	Carbon Steel (Q195, Q235, 35K, 45#), Stainless Steel (SS304/316)
Metric Size	M3, M4, M5, M6, M8, M10, M12, M16, M20, M24 … M64
Inch Size	1/4″, 5/16″, 3/8″, 1/2″, 5/8″, 3/4″, 1″ (UNC / UNF)
Thread Type	Coarse Thread (Standard), Fine Thread (Custom)
Proof Load	Matches ISO 898-2 requirements
Finish	Plain (Oiled), Zinc Plated (Blue/White/Yellow), Black Oxide, HDG
Standard	DIN 934, ISO 4032, UNI 5587, ANSI B18.2.2

Application Scenarios

• Steel Construction: Securing I-beams and columns using M20 or M24 HDG nuts.

• Automotive: Wheel nuts and engine mounting nuts (often Class 10).

• Railways: Vibration-resistant connections for track maintenance.

• General Assembly: From household appliances to agricultural machinery.

Manufacturing Process: Cold Forging vs. Hot Forging

• Cold Forging (Sizes M6 – M24): We use multi-station bolt formers to “punch” the nut shape from wire coils at room temperature.

  • Benefit: Extremely fast production, smooth surface finish, and work-hardened strength.

• Hot Forging (Sizes M27 – M64): The steel bar is heated red-hot before being pressed into shape.

  • Benefit: Allows for forming very large nuts that cold heading machines cannot handle.

Get a Quote for Bulk Supply

We are a “weight-based” supplier, meaning we offer extremely competitive pricing per ton for container orders. We export regularly to Russia, Brazil, and Europe.

Whether you need small boxes (1kg) or bulk gunny bags (50kg), please Contact Us to get our latest price list for DIN 934 nuts.