I loved listening to you so much on the Real Mechanic Stuff channel I thought I’d check out your home channel (and enjoyed it). I had heard that lubricating a bolt would make it “hold” better, but you said not to use oil when torquing nuts. I thought I’d see what Machinery’s Handbook (30th Edition) had to say about the subject. It was WAY deeper than what I was prepared to read, but I don’t think it makes a substantial difference either way. Below is paraphrased from the first page (of 13j on TORQUE AND TENSION IN FASTENERS. To estimate required torque, use T = K * Fi * d, where T is the wrench torque, K is a constant that depends on bolt material and size, Fi is the preload required, and d is the nominal bolt diameter. Use K = 0.2 for mild steel bolts 1/4” to 1”, 0.3 for black finish, 0.2 for zinc-plated, 0.18 FOR LUBRICATED, cadmium-plated 0.16 Table 1. Coefficient of Friction of Bolts and Nuts mentions all bolts are assumed to have some remaining machine oil from manufacture unless they’ve been cleaned with acetone. I spent way too much time typing this in but thought you’d like to know - and not just take it on faith some random dude on RUclips is right.
Fantastic teacher. Excellent descriptions and explanations.
Great teacher. Split pin for the castle nut. Cotter pins have a flat sided shaft and end bolt like on a bike crank.
Good video! "Fasteners"
I loved listening to you so much on the Real Mechanic Stuff channel I thought I’d check out your home channel (and enjoyed it).
I had heard that lubricating a bolt would make it “hold” better, but you said not to use oil when torquing nuts. I thought I’d see what Machinery’s Handbook (30th Edition) had to say about the subject. It was WAY deeper than what I was prepared to read, but I don’t think it makes a substantial difference either way. Below is paraphrased from the first page (of 13j on TORQUE AND TENSION IN FASTENERS.
To estimate required torque, use T = K * Fi * d, where T is the wrench torque, K is a constant that depends on bolt material and size, Fi is the preload required, and d is the nominal bolt diameter. Use K = 0.2 for mild steel bolts 1/4” to 1”, 0.3 for black finish, 0.2 for zinc-plated, 0.18 FOR LUBRICATED, cadmium-plated 0.16
Table 1. Coefficient of Friction of Bolts and Nuts mentions all bolts are assumed to have some remaining machine oil from manufacture unless they’ve been cleaned with acetone.
I spent way too much time typing this in but thought you’d like to know - and not just take it on faith some random dude on RUclips is right.
"hug the thread" that was a sweet explanation! Great video!
Thank you very well explained.
Pretty good learning video thank you
Wow she’s beautiful
she's fine
If only whoever named these things in the first place was a bit more mature...
sorry