Bolt threading GIF

[Jon]

Bolt threading GIF.


https://s3-us-west-1.amazonaws.com/h..._threading.gif

[smithdoor]

Good video

Dave

[Toolmaker51]

Bolt threading GIF.

More than mere threading, that's thread rolling, basically a knurling process. The bolt is pre-headed by impact [hex or socket] and body is undersize finished diameter. Dies have slight incline to squeeze progressively and maintain pitch diameter, an important detail combined with material to produce graded fasteners. Rolling raises metal to form threads, preserving and strengthening lengthwise metal grain structure, imparting finish mechanically superior to cut threads, in a fractional amount of time. Smooth clean thread flanks especially near roots and crests, contribute to better torquing, a real consideration Grade 5 and higher.

[Toolmaker51]

Brawura i prędkość, czyli najczęstszy powód wypadków drogowych | Auto OC
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Thanks Coupleder11T. Wherever you are located, good to know the brigade of thoughtful consumerism exists to aid others.