Is there anywhere in Section VIII, Div.1 stating carbon steel washers SHALL be made from material listed in Table UCS-23 or Section II materials?
The washer isn't being used on a traditional B16.5/47 Flange design, but instead a custom swingbolt design where the Bolt Circle is larger than the OD of the Flange and the washer is spanning the gap between the Clip Legs. I've attached a picture for reference.
My understanding is that this washer does not require pressure or strength calculations and the only material requirement is that they be made from Wrought Material, per UG-13.
UCS-11 states washers MAY be made from materials in Table II, not SHALL.
Does UCS-5 over-ride UG-13 and UCS-11?
Would calling for the washer be supplied in accordance with either ASTM F844 or F436 be sufficient?