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Do you know all type of bolts ?

Fasteners come in many different forms. To make it easy for you, we’ve compiled the data below as a guide for figuring out what each fastener is called. Scroll down to learn about many different types of nuts, bolts,just for reference

 

Carriage Bolts

Also known as a “coach” bolt, has a domed or countersunk head. The square section under the head grips into the part being fastened preventing the bolt from turning when the nut is tightened.

Din No :DIN 603 ,DIN 608

Hex Head Bolts

Hex tap bolts, hex cap screws, trim head hex cap screws, and hex serrated flange bolts fall under this category. They share a hexagonal head and are driven with a wrench. Referred to as both bolts and screws.

 

DIN NO :DIN 933 ,DIN 931 ,DIN 960 ,DIN 961

 

Shoulder Bolts

Shoulder bolts (also known as shoulder screws or stripper bolts) are machine screws with a shoulder between the thread of the screw and the head of the part. Once installed, the non-threaded portion extends out of the surface of the application site, allowing the bolts to act as dowels or shafts for moving parts. They can be installed by hand or with a socket (allen) driver.

Hex shoulder bolts

Socket Cap Screws

Socket cap screws are available in button socket, button flange socket head, flat socket, and socket cap. Driven with a socket wrench or a hex allen key. The term socket head cap screw typically refers to a type of threaded fastener whose head diameter is nominally 1.5 times or more than that of the screw shank diameter.

DIN NO :DIN 912

Square Head Bolts

Square Head Bolts have are similar to hex cap screws but with a 4 sided head. This head style allows for a wrench to grip more easily onto the head of the bolt. The head also provides a larger gripping area as compared to a standard 6 sided hexagonal head.

wheel bolts, special bolts

Hex Lag Screws

Lag screws, also called lag bolts, are large wood screws. The head is external hex and are driven with a wrench. Used for lag together lumber for framing, machinery to wood floors, and other heavy duty applications

DIN NO :DIN 571

Wood Screws

Wood screws are partially threaded with large cutting threads and a smooth shank. They are designed to slide through the top piece of wood and tightly pull all boards together.

 

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