SS Flat Washers – BS 4320 ANSI 304/316

SS Flat Washers – BS 4320 ANSI 304/316

  • Specification – BS 3410
  • Material – ANSI 304/306
  • Grade – 304/316


Washer, a part of the machine that is used in combination with a screw fastener, such as a bolt and nut, which usually serves either to prevent the screw from loosening or to spread the load from the nut or bolt head over a larger area. Thin flat soft steel rings are commonly used for load distribution. Washers serve as springs to compensate for any change in the distance between the head of the bolt and the nut.

304/316 GRADE
BOLT DIA. (D) INSIDE DIA. (D) OUTSIDE DIA.(D)  Thickness (T) 304 316
M12 14.0 24.0 2.5
M14 16.0 28.0 28.0
M16 18.0 30.0 30.0
M18 20.0 34.0 34.0
M20 22.0 37.0 37.0
M22 24.0 39.0 39.0
M24 26.0 44.0 44.0
M27 30.0 50.0 50.0
M30 33.0 56.0 56.0
M33 36.0 60.0 60.0
M36 39.0 66.0 66.0

We export Fasteners of all kind to our clients Worldwide - Hungary, Kazakhstan, Bhutan, Mexico, Poland, Malaysia, Poland, South Korea, Canada, Yemen, Bulgaria, Philippines, Thailand, Costa Rica, Switzerland, Germany, Spain, Egypt, Argentina, Tunisia, Lebanon, China, Nigeria, South Africa, Jordan, Saudi Arabia, Bangladesh, Venezuela, Nigeria, Norway, Mexico, Croatia, Russia, Ecuador, Puerto Rico, Iran, Denmark, Serbia, Indonesia, Gabon, Czech Republic, Qatar, Austria, India, Greece, Finland, Iran, Mongolia, Israel, Portugal, Peru, Gambia, Romania, Iraq, Slovakia, Oman, Bolivia, Libya, Zimbabwe, Azerbaijan, Australia, Kuwait, Belarus, Taiwan, Hong Kong, Brazil, France, Algeria, Chile, Turkey, Belgium, Singapore, Colombia, India, Trinidad & Tobago, Tibet, Ghana, Chile, Angola, Afghanistan, Vietnam, Japan, Kenya, United Kingdom, Bahrain, Netherlands, Italy, New Zealand, Ukraine, Estonia, United States, Sweden, Macau, Lithuania, Pakistan, Sri Lanka, Namibia, Ireland, Nepal, Morocco