_______________ is a nut in which slots are cut in a cylindrical collar provided on the top of the nut, thus overcoming the disadvantage of slotted nut.
(a) Simmond’s locknut
(b) Penn nut
(c) Castle nut
(d) Sawn nut or wiles nut
I had been asked this question in my homework.
My doubt is from Locking Arrangements for Nuts in chapter Screw Threads & Screwed Fastening of Engineering Drawing