Welcome aboard!
I agree made by Snyder who also made Rollfast, same bike. Hardware stores sold those bikes with a different name and model.
Yours is a 71 or later model judging by the BMI sticker on the seat tube. Although it looks like an early 60's bike.
The bottom bracket (BB) is the standard size, bikes today still use that OPC (one piece crank). Most all American bikes used them, then overseas bikes also had them after everything went overseas. But judging from the condition of your bike, they probably just need tightening up a little.
There are 2 things that have reverse threads, the left pedal, and the adjustment side of the cranks, they turn left to tighten.
New grease on the bearings is probably needed, as the old grease is probably hardened by now. I use a cheap tub of axle bearing grease from the auto parts place, but you can also get a tube of bike lube.
You can go by walmart and see the same size cranks on the cruisers. Your old bearings are probably in better shape because of the quality back then.
Same goes for the steering bearings and wheel bearings.
The rear hub has a oil port, that's made for light oil, like 30 weight motor oil or more expensive light fine oil.
How to set the tightness of the bearings might be a little tricky if you've never done it. Just ask here at RRB and someone will explain and show how it's done.
Your bike looks original, even the seat isn't torn up, unusual for a boys bike. The wheels don't match, the rear is probably what should be on there, but with very little wear, maybe it came with a different front rim. If they hit something and changed the front, the forks would show a slight bend, but they are straight.
Yours is a middleweight bike, and came with 26 x 1.75 tires, you may have the originals on it. On some middleweights, I've been able to go up to 26 x 2.125 but had to take the fenders off for that to work. And the wheels had to be very straight.
I would clean and wax it to see how good it looks, but it's your bike, have fun with it and do some custom modification. And make room for more bikes. Here's the Rollfast version from a few years earlier than yours: