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SAE ARP 1902B-2018
Bolt, Tee Head, Interface Surface, Dimensions for
This recommended practice provides the dimensional data for the diameters of surfaces that interface with the following tee head bolt series: AS 3232 thru AS 3235, MS 9397 thru MS 9402 and MS 9432 thru MS 9437, or other parts with compatible dimensions.
Society of Automotive Engineers [sae]