Flat Round Sampson Washer 38-45HRC Zinc Yellow Passivate

The Flat Round Sampson Washer 38-45HRC Zinc Yellow Passivate is a Hobson washer that distributes clamping load and protects surfaces in bolted assemblies.

Where this product is used

Hobson washers distribute clamping load, prevent surface damage and provide sealing or vibration isolation in bolted assemblies.

• Load distribution under bolt heads and nuts
• Structural and civil steel connections
• Sealing and vibration isolation in mechanical assemblies

Key specifications

Selecting the right option

Select Hobson washers by inner diameter, outer diameter series (standard, large/supa, mudguard, structural, sampson), material and finish. Hardened washers (H9, Sampson 38–45 HRC) are required under high-tensile bolt heads. Spring washers are available in flat and square section for vibration resistance. Nylon, brass and stainless options suit specialist applications.