SS Plain Washer Supplier in Ahmedabad

About Plain Washers

A plain washer is a flat ring placed under a nut or bolt head. It spreads the load over a larger area, protects the surface from damage and covers oversize or slotted holes. The common standards are DIN 125 and IS 2016.

SS 304, SS 316 or SS 202?

Use SS 304 for most indoor and outdoor work, SS 316 for coastal and chemical areas, and SS 202 for dry indoor use where cost matters. Match the washer grade to the bolt and nut to avoid corrosion. See our SS 304 vs SS 316 vs SS 202 guide.

Washers for High Tensile and HDG Bolts

High tensile bolts need washers of the right hardness, so the washer does not dent under the high clamping load. ISO 7089 gives 200 HV washers for bolts up to class 8.8 and hardened 300 HV washers for bolts up to 10.9. Hot dip galvanized bolts need HDG washers, and mild steel bolts take mild steel washers. We supply these on request.

Applications

• Structural and fabrication work
• Electrical panels and earthing
• Food, dairy and pharma machinery
• Solar structures and outdoor fittings

Plain Washer Size Chart (DIN 125 A)

All dimensions in mm, for reference.

Plain Washer FAQs

What size washer fits an M10 bolt?

An M10 plain washer to DIN 125 has a 10.5 mm hole, a 20 mm outer diameter and a thickness of 2 mm.

Should the washer go under the nut or under the bolt head?

Put it on the side that is turned when tightening, usually under the nut. On soft materials or slotted holes, use a washer on both sides.

Do I need a spring washer as well?

Use a spring washer as well where there is vibration. The plain washer goes against the part, and the spring washer goes under the nut.