Every screw and bolt has a head that is unique to it's intended function.
Below is your basic guide to screw head styles and their uses.

At Fastener SuperStore, Inc., we supply only the highest quality fasteners. We make it our business to supply you with the durable hardware in the quantities you need.

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Binder Undercut Head Screws at FastenerSuperstore

Binder / Binding
Undercut

Binder / Binder Undercut - Often used for electrical applications. The undercut area beneath the head allows space for wire connections.

Bugle Head Screws at FastenerSuperstore

Bugle

Bugle Head - Countersunk style primarily used in drywall and wood decking.

Button Head Screws at FastenerSuperstore

Button

Button Head - Rounded head most often used in socket driven screws. Becoming more common with Torx / Six-lobe drives as well.

Fillister Head Screws at Fastener SuperStore

Fillister

Fillister Head - Smaller diameter and higher profile than round or pan heads allows for deeper slot.

Flat Head Screws at Fastener SuperStore

Flat

Flat Head (82 degrees) - Standard countersunk flat head screw. Allows for flat, smooth surface after installation.

Flat Undercut Head Screws at Fastener SuperStore

Flat
Undercut

Flat Undercut Head (82 degrees) - Used instead of standard flat head for some short sizes. Allows for more shallow countersinking than standard 82 degree flat heads.

Flat 100 Head Screws at Fastener SuperStore

Flat 100

Flat 100 Head - Uses a 100 degree angle rather than the standard 82 degree. Used for thinner materials that require a flat head.

Flat 100 Undercut Head Screws at Fastener SuperStore

Flat 100
Undercut

Flat 100 Undercut Head - Used instead of flat 100 for some short screws. Allows for slightly longer thread grip.

Metric Flat Head Screws at Fastener SuperStore

Flat Metric

Flat Head (Metric) - Metric flat heads screws come standard with a 90 degree head angle.

Hex Head Screws at Fastener SuperStore

Hex

Hex Head - Common in bolts, hex heads allow for greater torque and are driven with the drivers force against the outside of the head, unlike most drives, which are internally driven.

Hex Washer Head Screws at Fastener SuperStore

Hex Washer

Hex Washer Head - Newer and more common version of the hex head. Attached washer style flange under the head creates larger surface connection area. Sometimes available in combination with phillips or slotted drive.

Modified Truss Head K Lath Screws at Fastener SuperStore

Modified Truss
Head / K Lath

Modified Truss Head / K Lath - Provides extra large bearing surface with low profile / clearance. Very similar to Round Washer Head Style.

Oval Head Screws at Fastener SuperStore

Oval

Oval Head - Countersunk screw head that includes a decorative rounded finish at the top. Often used for switch coverings.

Oval Undercut Screws at Fastener SuperStore

Oval
Undercut

Oval Undercut Head - Used in some shorter screw lengths to allow for longer thread grip and more shallow countersinking.

Pan Head Screws at Fastener SuperStore

Pan

Pan Head - Most common type of rounded-top screw head. Used in many applications when a flat bottomed screw is required. Can be successfully substituted for many similar head styles.

Round Head Screws at Fastener SuperStore

Round

Round Head - Becoming less common, but offers an appearance alternative from other rounded head screws.

Round Washer Head Screws at Fastener SuperStore

Round
Washer

Round Washer Head - Creates larger bearing surface in situations where rounded head is preferred. Very similar to Modified Truss Head Style.

Serrated Head Screws at Fastener SuperStore

Serrated

Serrated - While not a single head style, serrations on the bottom are an option on some head types. The serrations on the underside allow for tighter hold while also resisting loosening.

Socket Head Cap Screws at Fastener SuperStore

Socket Cap
Screw

Socket Cap Screw Heads - A style unique to socket drive screws, these heads are often installed flush with the surrounding materials, providing a smooth appearance with easy access to the drive.

Trim Head Screws at Fastener SuperStore

Trim

Trim Head - An option to flat head screws, providing a narrower head. Often used as a finishing screw for carpentry and woodworking.

Truss Head Screws at Fastener SuperStore

Truss

Truss Head - Sometimes called a mushroom head, provides a larger bearing surface and a lower profile than pan or round heads.

Wafer Head Screws at Fastener SuperStore

Wafer

Wafer Head - Most commonly found in Self-Drilling Screws. Provides bearing surface while still able to countersink into soft materials.

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