Tag Archives: F436
F844 Standard Washer CertificationsDo ASTM F844 standard flat washers come with certification documents?
Commercially available ASTM F844 washers are typically not accompanied by certification documents, even though the F844 washers supplied by Portland Bolt are domestically manufactured. The reason mill test reports are not available for F844 washers is that there are no specific chemical or mechanical (strength, hardness) requirements for these washers. The only requirement is that they need... Read more
Stacking Washers with A325 BoltsIs stacking of F436 washers acceptable with an A325 bolted connection?
Yes, in some cases the stacking of F436 washers seems to be allowed, but not in all cases. The Research Council on Structural Connections (RCSC) in Specification for Structural Joints Using High-Strength Bolts, December 31, 2009, page 16.2-12 says, “If necessary, the next increment of bolt length can be specified with ASTM F436 washers in... Read more
Custom F436 WashersMy plans are calling for a 1" thick, 5" outside diameter ASTM F436 plate washer. My local supplier is telling me that F436 washers only come in standard sizes that are much smaller. Are these larger F436 plate washers available?
Yes. Custom F436 washers can be manufactured to larger sizes per your job’s requirements. Portland Bolt has been involved in many projects where custom F436 washers were specifically called for on a job. However, ASTM F436 does not technically allow for custom sizes and only allows for very specific types and styles that conform to... Read more