DIN 792 Cylindrical Countersunk Screws

About DIN 792 Cylindrical Countersunk Screws

DIN 792 cylindrical countersunk screws are highly specialized, anti-corrosive fasteners engineered for heavy-duty structural applications. Combining a flat, deep cylindrical head with a tapered countersunk neck, they sit completely flush within pre-machined mating parts. They feature an integrated, precision-machined locking nib (or tenon) directly beneath the head profile, allowing the bolt to securely self-lock into a matching keyway or mortise to prevent rotation during high-torque tightening.

Key features

• Superior corrosion resistance: Forged from premium austenitic stainless steel, making them completely rust-free and optimal for marine, chemical, and outdoor industrial environments.

• Self-locking anti-rotation: The specialized nib eliminates the need for secondary locking tools, facilitating single-sided assembly and high-torque installations.

• Flush profile surface: The unique countersunk cylindrical design reduces obstruction and eliminates snagging hazards on heavy machinery and equipment faces.

Material grades

Stainless steel DIN 792 fasteners are primarily manufactured using the following material classifications:

• A2 stainless steel (SS304): The benchmark grade offering exceptional rust prevention, longevity, and structural reliability for standard industrial applications.

• A4 stainless steel (SS316): Infused with molybdenum to provide elite defense against severe chloride pitting, making it ideal for marine or offshore engineering.

Dimensional standard specification

Screws adhere strictly to the dimensions defined by the DIN 792 Standard. They are optimized with 6g metric coarse threads for heavy-duty load bearing.

Dimensional data table (all measurements in mm)