Schnorr M8 Safety Lock Washer

Description

This is a genuine Type S safety washer from Schnorr, designed for M8 bolt sizes. These washers are specifically engineered to prevent the loosening of bolted connections under heavy vibration. The serrated surface provides a form-locking effect that is superior to traditional spring washers, ensuring maximum reliability for your assemblies.

Specifications

• Manufacturer: Schnorr
• Type: Safety Lock Washer Type S
• Size: M8 (for 8mm diameter bolts)
• Material: Spring Steel
• Finish: Black (likely phosphated and oiled)

Label Info

• Marking: SCHNORR
• Size Marking: M8 (or similar identifier)

Application

Ideal for use in high-vibration environments such as automotive, railway, heavy machinery, and industrial automation where connection integrity is critical.

Country of Origin

Manufactured in Germany.

CO2 Impact

By choosing this pre-owned hardware component, you contribute to a circular economy and avoid the CO2 emissions associated with new production, which for this item is estimated at 0.01 kg.

Availability

This item is in stock and ready for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

What is the main advantage of a Schnorr Type S washer over a standard split lock washer?

The Schnorr Type S washer is a 'safety washer' that provides a true form-locking connection through its serrated surface, which bites into the bolt head and the mating surface. This offers superior resistance to loosening from vibration compared to a standard split washer, which relies primarily on friction and spring tension.

While it is technically possible to reuse Schnorr washers, it is not recommended for critical applications. The sharp edges of the serrations, which are key to its locking function, can become flattened during initial tightening, reducing their effectiveness on subsequent uses. For maximum safety, always use a new washer.

This washer is most effective when used with mating components (like bolts and surfaces) made of materials with a lower hardness than the washer itself. It is designed to be used with steel bolts up to property class 8.8. Using it on very hard surfaces (above 40 HRC) may reduce its locking ability as the teeth cannot bite into the material effectively.

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Last Update: Friday, March 13, 2026