This specification covers metric aircraft quality spacers for use as positioners for tubes, flat washers for use as load spreaders, galling protection of adjacent surfaces and or material compatibility, and key or tab washers for use as locks for bolts, nuts and screws.
SAE MA1784-2012 history
2018SAE MA1784A-2018 Spacers and Washers@ Procurement Specification for@ Metric
2012SAE MA1784-2012 Spacers and Washers, Procurement Specification For, Metric
1987SAE MA1784-1987 Spacers and Washers, Procurement Specification for, Metric FSC 5310& 5365