Best Male Fluted Knobs

1.75" Fluted knob 5/16-18 X 1.00" steel zinc stud black pp.
Reviews
Find Best Price at Amazon"DONT buy the cheap 4 or 5 star plastic knobs on ebay.I had 2 of them break and cut my thumb."
"I used these knobs for sliding metal extensions on a welding table I made and they did the job quite well."

JW Winco's Hand knob with fluted head style, maximum heat resistance of nylon plastic: 110 degree C, matte black finish, Made of glass filled nylon plastic, zinc plated steel, molded-in threaded stud.
Reviews
Find Best Price at Amazon"Item arrived safely, on time and as described."
"good."
"Excellent finish."

1.75'"Fluted knob 3/8-16 X 1.00" steel zinc stud black pp.
Reviews
Find Best Price at Amazon"The "Won't crack, become brittle or discolor" statement does not hold water in the desert, as ALL plastics lose their plasticizers at an accelerated rate in a hot dry climate."
"Great handles, they are perfect for the project I am working on...I am about to order more right now."
Best Fluted Knobs

1.75'"Fluted knob 3/8-16 X 1.00" steel zinc stud black pp.
Reviews
Find Best Price at Amazon"The "Won't crack, become brittle or discolor" statement does not hold water in the desert, as ALL plastics lose their plasticizers at an accelerated rate in a hot dry climate."
"Great handles, they are perfect for the project I am working on...I am about to order more right now."
Best Female Fluted Knobs

JW Winco's Aluminum clamping hand knob.
Reviews
Find Best Price at Amazon"Nice knob, but I don't understand why they couldn't cut the threads cleanly."
"One star knocked off due to the threads not being cut all the way through."
"great they work as said thank you."
"I ordered a size too large."
"Fantastic product."
"Nice clamping knob."
"Hey, its an aluminum knob, but high quality and works as required."