DIN 6923 Flange Nut Standard Overview

The DIN 6923 flange nut is a hex nut with an integrated washer-like flange at its base. This flange distributes the clamping load over a larger surface, reducing the risk of damage to the connected material and improving fastening reliability. The DIN 6923 standard specifies the nut’s structural design, material grades, mechanical performance, and applicable finishes, ensuring compatibility with corresponding DIN-standard bolts.

DIN 6923 Flange Nut Dimensions and Size Range

According to the DIN 6923 standard, the flange nut is available in thread sizes typically ranging from M3 to M20. Common dimensions include:

• Thread diameter (d) in mm: M3, M4, M5, M6, M8, M10, M12, M14, M16, M20
• Across flats (s): matches standard hex nut sizes for each diameter
• Flange diameter (dw): proportionally larger than the nut’s width to provide a stable bearing surface

These dimensions ensure full interchangeability with bolts of the same nominal diameter and thread pitch.

DIN 6923 Flange Nut Tolerances and Quality Grades

The DIN 6923 flange nut typically follows tolerance class 6H for internal threads, ensuring a precise fit with standard bolts. Mechanical property classes such as 8, 10, and 12 are common for carbon steel flange nuts, while stainless steel variants (A2, A4) provide enhanced corrosion resistance. The standard also defines surface finishes such as plain, zinc-plated, hot-dip galvanized, or black oxide for various environments.

Compatible DIN Standard Bolts for DIN 6923 Flange Nuts

The DIN 6923 flange nut is designed to work with hex head bolts, flange bolts, and other fasteners of matching thread size and pitch. Common compatible bolt standards include:

• DIN 933 (full thread hex bolts)
• DIN 931 (partial thread hex bolts)
• DIN 6921 (flange bolts)

Pairing a flange nut with the correct DIN bolt ensures optimal clamping performance and prevents loosening under vibration.

Xinchi Fasteners’ Advantages in DIN 6923 Flange Nut Production

Xinchi Fasteners manufactures DIN 6923 flange nuts with strict adherence to dimensional and mechanical standards. Our factory is equipped with 102 cold-heading machines, enabling us to produce over 10 million pieces daily. The new facility covers 30,000㎡ across two six-story buildings, ensuring large-scale production capacity and consistent quality control. We offer both carbon steel and stainless steel flange nuts with customized finishes to meet specific project requirements.

XINCHI is a trustworthy fastener company, especially in furniture nuts. We have a factory,  founded in 2007. We are the designated fastener supplier to“STAPLE”. As a trusted fastener supplier, XINCHI offers a wide range of high-quality fasteners, including nuts, screws, bolts, rivets, and washers. If you would like to learn more about fasteners or are interested in wholesale fasteners, please do not hesitate to contact us. Our experienced and expert service team will reply as soon as possible.