Washers
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WASHER

We are the Roll-Fast leading manufacturers of Washer for the construction of Petrochemical Industries & general maintenance work on a daily basis. We offer Washer in different grades like MS, Carbon Steel, HV 100, HV 200, HV 300, A4, SS 304, SS316, Brass, Copper, Aluminium as per DIN 125 / ISO 7089 etc. We offer sizes from M10 to M100 or 1/2” to 4”.

What is Washer?

A washer is a thin plate with a hole that is normally used to distribute the load of a threaded fastener, such as a bolt or nut. Washer, machine component that is used in conjunction with a screw fastener such as a bolt and nut and that usually serves either to keep the screw from loosening or to distribute the load from the nut or bolt head over a larger area. For load distribution, thin flat rings of soft steel are usual.

Roll-fast manufactures bigger diameter Washer in mild Steel, Carbon Steel, Stainless Steel, Brass, Copper, Aluminum etc. These washers are widely used in many Industries. These are also used Widely in all other kind of sectors namely, heavy engineering, Valves and pump Industry, Desalination projects, Pumping stations, Mega reservoirs, Bridges and road constructions, cross country pipe lines, flange joints and other critical applications. We are the pioneers in manufacturing Washer for the petrochemical industries.

Roll-fast manufactures world class Washer for use in petrochemical industry, these washer are manufactured as per Indian, European and American standard in Coating like Plain, Black and Hot Dip Galvanised (HDG), Geomat, Zinc Flake, Zinc Electroplating, Xylon, PTFE, Non-Metallic coating etc.

We are the biggest producers for Washer in India, as our name suggests we are manufacturing washer grades in the under mentioned table -

Fastener Type

Diameter

Grades

Grades

Grades

Grades

Standard

Flat Washer

M-10 to M-100

1/2” to 4”

MS

HV 100, HV 200, HV300

SS 304, SS316

Brass, Aluminium, Copper

ISO 7089, DIN 125, ASTM F884, ASTM A436

Lock Washer

M-10 to M-100

1/2” to 4”

MS

HV 100, HV 200, HV300

SS 304, SS316

Brass, Aluminium, Copper

DIN 25201

HV Washer

M-10 to M-100

1/2” to 4”

MS

HV 100, HV 200, HV300

SS 304, SS316

Brass, Aluminium, Copper

EN 14399-6, DIN 6914, Dast 021

Chamfered Washer

M-10 to M-100

1/2” to 4”

MS

HV 100, HV 200, HV300

SS 304, SS316

Brass, Aluminium, Copper

ISO 7090

Spring Washer

M-10 to M-100

1/2” to 4”

MS

HV 100, HV 200, HV300

SS 304, SS316

Brass, Aluminium, Copper

DIN 127

Fender Washer

M-10 to M-100

1/2” to 4”

MS

HV 100, HV 200, HV300

SS 304, SS316

Brass, Aluminium, Copper

ASME B18.21.1

Shoulder Washer

M-10 to M-100

1/2” to 4”

MS

HV 100, HV 200, HV300

SS 304, SS316

Brass, Aluminium, Copper

As per dwg.

Countersunk Washer

M-10 to M-100

1/2” to 4”

MS

HV 100, HV 200, HV300

SS 304, SS316

Brass, Aluminium, Copper

As per dwg

Male & Female Spherical Washer

M-10 to M-100

1/2” to 4”

MS

HV 100, HV 200, HV300

SS 304, SS316

Brass, Aluminium, Copper

Din 6319

Washers are generally used with bolts & nuts in assemble to fill the gap in the drilled hole area and to provide a base for the nut to clamp. Washers are generally sold in pairs and 2 are used with every one bolt & nut in assembly.

Manufacturing

We manufacture of washer from M-10 to M-100 in diameter in class MS, HV100, HV 200, HV 300, A4, SS 304, SS 316 stocks are readily available. we also offer Standard Washer, Lock Washer, Spring Washer, Chamfered Washer, Conical Washer etc. The biggest advantage of our manufacturing is that we do Internal SQF sealed quench heat treatment furnace from DOWA Japan, the heat treatment furnace is SCADA controlled and provides 100% repeatability batch after batch. The heat treatment result is a perfect marten site after hardening and gives perfect results after tempering as per standard requirement.

These washers are punch on power press & CNC machining, After that we Heat Treatment and then coating as per customer requirement and then final assembly.

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