What material are the passenger side seat brackets made from?

Both brackets are made from 1/4" thick carbon steel plate.

What size are the mounting holes and hardware?

All holes are 0.3900 inches in diameter, with 3/8 x 24 nuts welded to the plates (on the rear bracket the nuts are welded to the underside of the plate).

What is the hole spacing on the rear bracket?

The two holes are 11.50 inches apart center-to-center, each located 2.00 inches from the ends of the 15.50-inch plate.

How are the three holes on the front bracket spaced?

The first hole is 2.00 inches from the left edge, the second is 3.00 inches from the first, and the third is 8.50 inches from the second (2.00 inches from the right edge), giving 11.50 inches between the outer holes.

Home/ Registry/ Ford/ Bronco/ 1992-1996/ “Eddie Bauer”/ Photo supermotors.net/registry/media/1007162

Ford Bronco SD Seat Adapter Passenger Side Brackets Blueprint - Dimensions

Dimensioned drawing of passenger side front and rear brackets with welded nuts

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Engineering blueprint of passenger-side front and rear brackets showing dimensions, hole spacing and welded nuts.

AI caption January 2014 · Photo 1476 of 3001

This blueprint-style drawing, titled "Passenger Side Brackets," provides fabrication dimensions for two custom seat adapter brackets — a Front Bracket and a Rear Bracket — intended for mounting a Super Duty (SD) seat. Both brackets are cut from 1/4" thick carbon steel plate and are 15.50 inches long. The Front Bracket is 3.00 inches tall with a rounded lower-left corner and features three 0.3900-inch diameter holes: the first is 2.00 inches from the left edge, the second is 3.00 inches further along, and the third is 8.50 inches beyond that (2.00 inches from the right edge), with 11.50 inches between the outer holes. A welded 3/8 x 24 nut is specified at the mounting holes, and a 1.50-inch vertical dimension locates the hole line. The Rear Bracket is 2.00 inches tall with two 0.3900-inch holes spaced 11.50 inches apart, each 2.00 inches from the plate ends; 3/8 x 24 nuts are welded to the underside of the plate. A fabricator can use this drawing to reproduce the passenger-side adapter brackets used to fit Super Duty seats into a Ford Bronco, as part of a multi-page adapter plate set.

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Frequently asked questions

What material are the passenger side seat brackets made from?: Both brackets are made from 1/4" thick carbon steel plate.
How long are the front and rear brackets?: Both the Front Bracket and Rear Bracket are 15.50 inches long. The Front Bracket is 3.00 inches tall and the Rear Bracket is 2.00 inches tall.
What size are the mounting holes and hardware?: All holes are 0.3900 inches in diameter, with 3/8 x 24 nuts welded to the plates (on the rear bracket the nuts are welded to the underside of the plate).
What is the hole spacing on the rear bracket?: The two holes are 11.50 inches apart center-to-center, each located 2.00 inches from the ends of the 15.50-inch plate.
How are the three holes on the front bracket spaced?: The first hole is 2.00 inches from the left edge, the second is 3.00 inches from the first, and the third is 8.50 inches from the second (2.00 inches from the right edge), giving 11.50 inches between the outer holes.