Slotted Pan Head Shoulder Bolts DIN 923

DIN 923 Slotted Shoulder Bolts are precision-engineered fasteners with a cylindrical shoulder under the head, combined with a slotted drive. They are manufactured in A1 stainless steel and available in sizes ranging from M2 to M10, making them highly versatile for a wide range of engineering and assembly applications. The slotted drive allows for simple installation and removal using a flat-blade screwdriver, while the precision shoulder provides accurate spacing, alignment, and load distribution.

Common Applications and Industries

Slotted shoulder bolts to DIN 923 are used in applications where rotating or sliding components must be securely mounted while still allowing controlled movement. Typical uses include:

• Precision machinery – for guiding, spacing, and holding moving parts.
• Electrical and electronic equipment – where compact fastening and alignment are required.
• Fixtures and tooling – ensuring accurate positioning in jigs, gauges, and measuring instruments.
• Automotive and aerospace industries – in assemblies where tolerance and alignment are critical.
• Medical devices and optical instruments – where stainless steel provides corrosion resistance and clean performance.

Their corrosion-resistant stainless steel construction makes them especially suitable for outdoor, marine, and laboratory environments where durability is essential.

Difference Between DIN 923 and ISO 7379 Shoulder Bolts

While both DIN 923 and ISO 7379 fasteners are shoulder bolts, they are designed for different installation methods and purposes:

• DIN 923 Slotted Shoulder Bolts feature a slotted head, enabling use with a flat-blade screwdriver. They are typically employed in lighter-duty applications, instrument assemblies, and situations where hex keys may not be practical.
• ISO 7379 Socket Shoulder Bolts use a hex socket drive (Allen key), providing higher torque capability and greater clamping strength. These are often preferred in heavy-duty engineering, machinery, and automation where secure tightening is crucial.

In short, DIN 923 bolts are ideal for precision and light-to-medium duty applications, while ISO 7379 bolts are suited for robust mechanical fastening requiring higher torque.