What are roll pins made from?

Asked by: Melinda Gray

Spring pins, commonly known as slotted pins, rolled pins, or tension pins, are hollow, cylindrical tube‑style press fit fasteners with chamfered ends. They are crafted from alloy steel, carbon steel, and stainless steel featuring spring like elastic properties.

Are roll pins hardened steel?

Roll pins are very hard indeed, heavily rolled and heat treated. I am guessing that the hardness is around 800 Vickers, not far off the same as a metal file and an HSS drill.

What is the difference between a spring pin and a roll pin?

A spring pin is an unthreaded mechanical fastener that expands to securely fit in a hole. Spring pins, also known as roll pins, are designed to be inserted into a hole that has a smaller diameter than the pin.

Are spring pins hardened?

Hardened and ground carbon-steel spring pins are extremely hard, but cannot absorb much shock or impact without braking.

Can you reuse roll pins?

Can you reuse a roll pin? Sure. As long as it’s not been unduly damaged from removal. That means the ends are still tapered and the pin is still straight.

What steel are roll pins made of?

Spring pins, commonly known as slotted pins, rolled pins, or tension pins, are hollow, cylindrical tube‑style press fit fasteners with chamfered ends. They are crafted from alloy steel, carbon steel, and stainless steel featuring spring like elastic properties.

How do you get a rusted roll pin out?

So put your punch and your palm nailer. Put it up against your roll pin. Give it a whack and in literally two seconds.

What is the difference between a pin punch and a roll pin punch?

Roll pin punches – also known as Pilot Punches are used to drive or remove hollow tension pins, such as tapered and rolled or solid pins. They feature a similar long head like a pin punch with the difference being that they have a slight bump at the tip permitting insertion into a rolled pin.

What is the purpose of roll pins?

Roll Pins are fasteners that are often used in securing the position of multiple parts of a machine that are relative to each other. They are often used as a ‘key’ to fasten one shaft to another or to fasten flat faces of mating parts together.

Who invented the roll pin?

Late in the nineteenth century, J. W. Reed invented the rolling pin with handles connected to a center rod; this is similar to the tool we know today, and it prevents cooks from putting their hands on the rolling surface while shaping pastry.

What is a firearm roll pin?

Roll pins are hollow steel with a lengthwise split. The pin diameter is oversized to the hole it fits into by approximately the gap width of the split. It squeezes down as it enters the hole and the tension secures it in place. Roll pins have a bevel on each end, but it’s not always enough to get one started.

What does a roll pin look like?

Might have a big solid piece sitting right here on this end. Then we might have a bearing that sits right here. And followed that by a gear that sits on that bearing that sits on that shaft.

How are roll pins measured?

Because they're designed to lock into a hole as you force them in using a digital caliber measure the expanded diameter of a slotted spring.

What size hole do I drill for a roll pin?

Spring Roll Pins

How are spring pins made?

Coiled Spring Pins



Also known as a spiral spring pin, it features a coiled spring that expands when inserted into a hole. They are made by forming strips of metal into a spiral shape. Upon insertion, a coiled spring pin will begin to expand to create a strong and secure environment for the joined machine components.