With an overall length of 2-5/8 inch, the USA Adapter Short is just big enough to do the job, but not too big for your fixture.
The CNC Machined 12L14 steel pin fits the 5/8 inch male Baby pin on stands or hanging adapters.
The USA Adapter Short also fits the 1-1/8 inch receivers on Junior stands. The bolt has 1/2-13 threads and comes with a 1/2 -13 by 1 inch long hex head cap screw and a 1 inch OD Belleville washer .