Does Portland Bolt make square F436 hardened washers?
Yes. There is a common misconception that ASTM F436 hardened washers are only available in the standard circular sizes. However, the F436 specification covers four defined styles of hardened washers, while also allowing for custom dimension washers as well. The four defined styles are:
These four styles each have specific tables in the F436 specification that define their dimensions and allowable tolerances. But, in Section 3.1.5 it states that when ordering hardened steel washers under the F436 specification the purchaser should specify the “…dimensions, nominal size, and other dimensions, if modiﬁed from those covered in this speciﬁcation… ” to the manufacturer. In other words, differing styles and dimensions other than the four standards are allowed, so long as the washers meet all of the other chemical, mechanical, and marking requirements of the specification, and the purchaser and the manufacturer are both clear about what is being supplied.
Portland Bolt routinely manufactures custom F436 hardened washers and plates of varying shape and dimensions. Do you have a requirement for unique or unusual F436 washers or plates? Call one of our knowledgeable sales staff today and we will get you what you need!