Hobson WR43PM08 M8 x 18 x 2.3mm Flat Round Sampson Washer, 38-45HRC, Plain

This page lists 19 items of the Hobson flat round Sampson washer (plain): M8 to M100.

A Sampson washer is a hardened flat round washer. The supplier lists its hardness in HRC, the Rockwell C scale.

The supplier lists a hardness of 38-45HRC (manufacturer-stated).

For 15 of these items the Hobson High Tensile Stock List (April 2011) also gives the inside diameter and the pack weight; they are shown where the catalogue pack matches the supplier pack (manufacturer-stated).

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

Where this product is used

• Under the nut or bolt head of a bolted joint where a hardened flat washer is specified
• Spreading the clamping load of a bolt over a larger area

Features

• 19 items: M8 to M100
• Plain
• Hardness 38-45HRC (manufacturer-stated)
• Dimensions labelled where the store option or stock list states them
• Pack quantity shown for each item

Common specifications

Key specifications

Pack weight is the catalogue weight of the pack quantity shown, from the Hobson High Tensile Stock List, April 2011 (manufacturer-stated). It is shown only where the catalogue pack matches the supplier pack.

Selecting the right option

Choose the washer by the bolt or screw size it is made for, then check the dimensions in the table against the space you have. The standard named for the washer (where one is named) sets its dimensions, so check that it matches the specification for your joint. Plain washers are uncoated, so they suit fittings that are protected another way. For a similar washer in another material, finish or size range see Hobson Flat Round Sampson Washer, 38-45HRC, Zinc Plated, M6 to M36 and Hobson Flat Round Sampson Washer, 38-45HRC, Zinc Yellow Passivate, 1-5/8" to 3".

Related products

Related washers: Hobson Flat Round Sampson Washer, 38-45HRC, Zinc Plated, M6 to M36, Hobson Flat Round Sampson Washer, 38-45HRC, Zinc Yellow Passivate, 1-5/8" to 3" and Hobson H9 Impact Imperial Flat Washer, 43-49 HRC, Plain, 3/8" to 1-1/2".