1/4" x 3/4" Flat Head Carriage Bolts with Knurled Neck,Zinc Plated Carriage & Coach Bolt with Ribbed Neck,Flathead Plow Bolt Ribbed Shank for Vertical/Curve Track & Extension Ladder Systems (25 Sets)

My garage door was having problems. I had to replace the rollers. I changed the bottom rollers by tilting the straight section on the bottom track. I then replaced the track and replaced any old track screw/nuts which showed wear. These screw/nuts were so easy to install.They really worked very well for me

My Werner 24' Extension Ladder (D-1324-2EQ) has adjustable Equalizer legs at the bottom for use on uneven ground. The hardware that attaches the Equalizer legs to the ladder uses bolts exactly like this. One of the existing bolts twisted off when I was removing it as part of a repair. And I had barely touched it. These bolts are a perfect fit for replacing the broken one. In fact, I think I'll replace all 8 of them while I'm at it, since if one of the existing bolts was compromised, they may all be at this point. And I like the locking teeth on these new nuts too.

Before buying these I went through an ordeal with another seller that couldn't or wouldn't send the quantity they advertised ( twice ), I should have gone with these guys first and saved myself some grief.

Garage door track. Little to long but worked out good.

Fit worked just right for the project at hand

They worked but I thought the threads were a little sloppier than usual

No issues tightening them either.

Perfect for my needs