This Product Selection Guide contains information to help select products in the Screws, Bolts category on DigiKey.com
A screw is a conical fastener consisting of a protruding helix around a central shaft that acts as a wedge as it pushes into the fastened material. They are identified by head types such as cheese, flat, hex, knob, truss and pan. Bolts are cylindrical, threaded fasteners for the assembly of non-threaded components with the aid of a nut. They are identified by head types such as binding, cheese, flat, hex, oval, pan, round, spade and truss.
SelectionCharacteristics
Type: Indicates the specific style of the screw or bolt, typically by its intended function.
Screw Head Type: Indicates the shape of the screw head.
Drive Type: Indicates the style of tool used to drive the fastener.
Features: These are different capabilities or properties of the screw or bolt, such as self tapping or self sealing.
Thread Size: Indicates the thread size of the screws and bolts. For more information on screw sizes see Choosing a Screw by the Thread Size.
Head Diameter: The diameter of that portion of a product which bears against a fastened surface.
Head Height: The distance that a fastener protrudes from the surface against which it is installed.
Length - Below Head: The distance that a fastener protrudes beyond the surface against which it is installed.
Length - Overall: The overall length of the screw or bolt.
Material: Indicates the material composition of the screw or bolt.
Plating: Indicates the finish/plating material applied to the screw or bolt.
ProductExamples
| MFR PART # | 9900 |
|---|---|
| DIGIKEY PART # | 36-9900-ND |
| MANUFACTURER | Keystone Electronics |
| DESCRIPTION | MACHINE SCREW PAN PHILLIPS 4-40 |
| DATASHEET | Click Here |
| MFR PART # | M3465-SS |
|---|---|
| DIGIKEY PART # | 1772-1803-ND |
| MANUFACTURER | RAF Electronic Hardware |
| DESCRIPTION | THUMB SCREW KNOB M3X0.5 |
| DATASHEET | Click Here |
| MFR PART # | 010440P025 |
|---|---|
| DIGIKEY PART # | RPC6929-ND |
| MANUFACTURER | Essentra Components |
| DESCRIPTION | PAN SLOTTED MACHINE SCREW, NATUR |
| DATASHEET | Click Here |