Hobson WRMSYSQM04012 M4 Metric Spring Washer, Square Section

This page lists 6 items of the Hobson metric spring washer, square section (mild steel, zinc yellow passivate): M4 to M12.

A spring washer is a split ring fitted under a nut or bolt head. In a square section spring washer the ring has a square cross-section.

The supplier item description lists each size as the bolt or screw size followed by further figures without saying which is which. Those figures are shown as listed, and outside diameter and thickness are labelled only where the store option or the Hobson stock list states them.

Pack quantity varies by size and is shown for each item in the table.

Where this product is used

• Fitted under a nut or bolt head as a spring washer
• Where an assembly calls for a spring washer under the nut

Features

• 6 items: M4 to M12
• Mild steel, zinc yellow passivate
• Dimensions shown as listed by the supplier
• Pack quantity shown for each item

Common specifications

Key specifications

Selecting the right option

Choose the washer by the bolt size it is made for, then check the dimensions in the table: more than one thickness is listed for some sizes. Zinc yellow passivate is zinc plating with a yellow chromate topcoat (the Hobson acronym list names this ZY) (manufacturer-stated). For a similar washer in another material, finish or size range see Hobson Metric Spring Washer, Square Section, Zinc Plated, M4 to M24.

Related products

Related washers: Hobson Metric Spring Washer, Square Section, Zinc Plated, M4 to M24, Hobson Imperial Spring Washer, Flat Section, Zinc Plated, 1/8" to 1-1/2" and Hobson Imperial Spring Washer, Square Section, Hot Dip Galvanised, 1/4" to 1".