I assumed he was kidding. #4 is huge.
I guess snowboard bindings decided to bail on Pozidrive or at least more people would know about it. You’d think hardware and building stores in a ski town would know what it is. I went in to one and the guy who’d worked there probably 30 years had never heard of Pozidrive. Then I told him about JIS too. Didn’t want to blow the mind getting into Reed and Prince.
Why don’t we talk about Frearson/Reed and Prince...
Co still in business. Well the name. I guess it was liquidated in the 80’s. It would be hilarious to send them an inquiry for a quote to make them, as they make custom fasteners.
They were heavily used in aircraft in WW2 and boats. Still used for bronze screws. It appears many of the illustrations are wrong for todays R&P screws. The design was updated at some point, [edit- looks like 1884! ] radiusing the corners, so it is not a”perfect cross” as often claimed.
#14 silicon bronze screw, Frearson/Reed and Prince. Jamestown Distributors, price per 100.
John Frearson, English patent 1857, US 1873
progress-is-fine.blogspot.com
This relatively old, and small, US Co makes Reed and Prince, JIS, but not Pozi.
Chapman MFG Screwdriver bits vs. other screwdriver bits. Chapman bits are precision milled to tight tolerances with flat edges, sharp corners and no burrs for snug screw fit. All bits are machined from USA steel and heat treated with a black oxide rust inhibitor finish. Chapman bits are...
chapmanmfg.com
The Robertson screw is better in multiple ways, but Henry Ford sealed its fate in the U.S.
www.roadandtrack.com
The Robertson square drive has it’s problems also. You’d think it wouldn’t strip, but it does, or the recess deforms making it difficult to get the screw out. (One method is to pound a Torx bit in) Part of that may be due to stuff in the bottom not allowing sufficient depth. Torx is better and has replaced square drive on deck screws.