Dyna Glide ModelsSuper Glide, Super Glide Sport, Super Glide Custom, Dyna Glide Convertible, Super Glide T-Sport, Dyna Glide Police, Dyna Switchback, Low Rider, Street Bob, Fat Bob and Wide Glide.
Typically, if a screw has a captive washer, the specs in the hardware list will include "SEMS" (see 4688 & 4705). The specs for the oil pan screw (4741A) doesn't include SEMS.
But when the Dust Settles (where the rubber meets the road ), the 4741A does in fact include a captive washer ... just like Uncle Larry and Harley_ish already stated
Btw, here's a 4741A with "SEM" included on the printed description