The most basic difference between a cap screw and a bolt is the way in which these fasteners are installed. Technically, a bolt is installed by turning a nut to tighten the fastener, while a cap screw in installed by turning the head of the bolt to assemble and tighten.

09/03/  · 3 Answers, Sorted by: 3, The hex socket in a countersink will always be smaller than the socket in a hex socket capscrew. It's not so great at the smaller end - M5 countersink uses a 4mm hex, capscrews use a 5mm hex vs. 12mm and 17mm for M20.

A bolt has a head that can be tightened and loosen with the help of a hex or square wrench or a spanner. If the fastener is tightened and loosen by a drive tool 

Hex cap screws feature a washer face under the head and a chamfered point, whereas a hex bolt does not have a washer face or chamfered threads. They are made of 

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Hex bolts get their name from their shape. Hex head bolts have a hexagonal shaped head that makes them easy to grip and install with a wrench or ratchet because 

Hex cap screws offer a lot more support due to the cross section at their shoulder being larger than the cross section at the threaded portion 

Stainless steel hex cap screws are often mistakenly called hex bolts. However, the main difference is that hex cap screws feature a washer face under the head 

Socket screws are the preferred screw when bolts and nuts can't be used. The hex socket means the screw has six stress-bearing sides. Compared 

Typically, cap screws are fully threaded up to 1 to 1/4′′. Hex cap screws will be available in diameters ranging from 1/4′′ to 2′′. Visual difference. The key visual distinction between any fully threaded type hex cap screw and any hex tap bolt is that your hex cap screw has a certain washer face under its head, whereas the tap bolt

In general, hex head cap screws are a little more refined and precise than hex bolts. They have tighter tolerances across the board, no matter the size of the part. For example, the minimum body diameter for a ¼" nominal size hex head cap screw is 0.245" and the maximum is 0.250" — a 0.005" difference.