Fastener Information

Are you tired of struggling with fasteners and feeling overwhelmed by the various types and sizes available? Look no further! Our comprehensive Fastener Information PDF is here to equip you with all the knowledge you need to master the world of bolts, screws, and nuts. Whether you’re a DIY enthusiast or a professional tradesperson, this in-depth guide will be your go-to resource for understanding fasteners and their applications.

Calling all DIY enthusiasts and aspiring handypersons! Get ready to fasten your learning journey with our exclusive Fastener Information PDF. Say goodbye to confusion and hello to expertise as you dive into the fascinating world of nuts, bolts, and screws. Whether you’re a beginner or a seasoned pro, this downloadable guide will empower you with the confidence and know-how needed to tackle any project. Be the master of every fastening task – download now and unlock the secret behind a solid grip!

Fastener Categories
Phillips Flat Head Wood Screw
Slotted Round Head Wood Screw
Slotted Flat Head Machine Screw
Phillips Pan Head Machine Screw
Star Flat Head Machine Screw Type F
Hex Head Machine Screw Type F

Sheet metal screw, hex head
Sheet metal screw, Phillips oval head
Wood Screws
Screws with a smooth shank and tapered point for use in wood.
Abbreviated WS
Machine Screws
Screws with threads for use with a nut or tapped hole.
Abbreviated MS
Thread Cutting Machine Screws
Machine screws with a thread cutting (self tapping) point.
Sheet Metal Screws
Fully threaded screws with a point for use in sheet metal.
Abbreviated SMS
Self drilling sheet metal screw
Self drilling sheet metal screw
Hex bolt
Full thread hex bolt
Carriage boltLag bolt
Self Drilling SMS
A Sheet metal screw with a self drilling point.
Hex Bolts
Bolts with a hexagonal head with threads for use with a nut or tapped hole.
Abbreviated HHMB or HXBT
Carriage Bolts
Bolts with a smooth rounded head that has a small square section underneath.
Lag Bolts
Bolts with a wood thread
and pointed tip.
Abbreviated Lag
Flange BoltSocket Head
Socket Flat Head
Wire Eye Bolt
Shoulder Eye Bolt
Wire Eye Lag
Flange Bolts
Flange bolts have a flange on the bottom of the head that distributes the load like a washer.
Socket Screws
Socket screws, also known as Allen head, are fastened with a hex Allen wrench.
Eye Bolts
A bolt with a circular ring on the head end. Used for attaching rope or chain.
Eye Lags
Similar to an eye bolt but with wood threads instead of machine thread.
U-BoltJ-BoltHanger BoltHanger Bolt
Bolts in U shape for attaching to pipe or other round surfaces. Also available with a square bend.
J shaped bolts are used for tie-downs or as an open eye bolt.
Shoulder Bolts
Shoulder bolts (also known as stripper bolts) are used to create a pivot point.
Elevator Bolts
Elevator bolts are often used in conveyor systems. They have a large, flat head.
Hanger BoltMating ScrewHanger BoltSet screw
Sex Bolts
Sex bolts (a.k.a. barrel nuts or Chicago bolts) have a female thread and are used for through bolting applications where a head is desired on both sides of the joint.
Mating Screws
Mating screws have a shoulder that matches the diameter of the sex bolts they are used with.
Hanger Bolts
Hanger bolts have wood thread on one end and machine thread on the other end.
Set Screws
Machine screws with no head for screwing all the way into threaded holes.
Head Styles
Flat HeadFlat Head ProfileOval HeadOval Head ProfilePan HeadPan Head ProfileTruss HeadTruss Head Profile
A countersunk head with a flat top.
Abbreviated FH
A countersunk head with a rounded top.
Abbreviated OH or OV
A slightly rounded head with short vertical sides.
Abbreviated PN
An extra wide head with a rounded top.
Round HeadRound Head ProfileHex HeadHex Head ProfileHex Washer HeadHex Washer Head ProfileSlotted Hex HeadSlotted Hex Head Profile
A domed head.
Abbreviated RH
A hexagonal Head.
Abbreviated HH or HX
Hex Washer
A hex head with built
in washer.
Slotted Hex Washer
A hex head with built in washer and a slot.
Socket CapSocket Cap ProfileButton HeadButton Head Profile  
Socket Cap
A small cylindrical head using a socket drive.
A low profile rounded head using a socket drive.
Drive Types
Phillips DrivePhillips DriveFrearson DrivePhillips DriveSlotted DriveSlotted DriveCombo DriveCombo Drive
The standard drive type for most screws.
Abbreviated PH
Similar to Phillips. Requires a Frearson driver for installation.
A slot in the head.
Abbreviated SL
A combination of slotted and Phillips drives.
Abbreviated Combo
Allen DriveAllen DrivePhillips DrivePhillips DriveSlotted DriveSlotted DriveStar/Torx driveStar/Torx Drive
Socket, Hex or Allen
A hexagonal hole for use with an Allen wrench.
One Way
Installs with a normal slotted driver but can not be removed without special tools.
Also known as Robertson drive.
Abbreviated SQ or SD.
Also known as Torx®. A six-pointed star pattern, specifically designed to prevent cam-out and stripped heads.
Nut Types
hex nuthex nylock nuthex jam nuthex jam nylock nut
A six sided nut. Also referred to as a finished hex nut.
Nylon Insert Lock
A nut with a nylon insert
to prevent backing off.
Also referred to as a Nylock
A hex nut with a reduced height.
Nylon Insert Jam Lock
A nylock nut with a reduced height.
wing nutcap nutAcorn Nutflange nut
A nut with ‘wings’ for hand tightening.
A nut with a domed top over the end of the fastener.
Acorn nuts are a high crown type of cap nut, used for appearance.
A nut with a built in washer like flange.
t-nutsquare nutprevailing torque lock nutk-nut
A nut designed to be driven into wood to create a threaded hole.
A four sided nut.
Prevailing torque lock
A non-reversible lock nut used for high temperature applications
K-Lock or Kep
A nut with an attached free-spinning external tooth lockwasher.
2-Way Reversible Lock nutCoupling NutSlotted NutCastle Nut
2-Way Reversible Lock
A lock nut that can be installed either side up. Often used in high temperature applications.
Coupling nuts are long nuts used to connect pieces of threaded rod or other male threaded fasteners.
Slotted nuts are used in conjunction with a cotter pin on drilled shank fasteners to prevent loosening.
Castle nuts are similar to slotted nuts but with the slots in a rounded section above the main nut.
Washer Types
flat washerfender washerfinishing washerlock washer
A flat washer used to
distribute load. Available in SAE, USS, and other patterns.
An oversize flat washer used to further distribute load especially on soft materials.
A washer used to obtain a ‘finished’ look. Usually used with oval head screws.
Split Lock
The most common style of washer used to prevent nuts and bolts from backing out.
lock washer external toothlock washer internal toothsquare dock washerDock Washer
External Tooth Lock
A washer with external ‘teeth’ Used to prevent nuts and bolts from backing out.
Internal Tooth Lock
A washer with internal ‘teeth’ Used to prevent nuts and bolts from backing out.
A square shaped washer.
Dock washers have a larger outside diameter and are thicker than standard.
Ogee WasherSealing Washer  
Thick, large diameter, cast iron washers with a curved or sculpted appearance. Typically used in dock and wood construction
A neoprene washer bonded to a metal backing. Used to seal out air/water or dampen noise and vibration.

Related Posts

Benefits of Small Scale Industries

Benefits of Small Scale Industries

Benefits of Small Scale Industries – Small-scale industries are the backbone of many economies, particularly in developing countries. They are defined as businesses that maintain revenues, assets,…

Barrel Nuts and Bolts

Unraveling the Essentials: A Comprehensive Guide to Understanding Barrel Nuts and Bolts

Barrel nuts and bolts are not just ordinary components, but fundamental ones that play a crucial role in various applications. These specifically designed types of fasteners stand…

When to Use Washers with Nuts and Bolts-01

A Comprehensive Guide on When to Use Washers with Nuts and Bolts

When it comes to securing nuts and bolts, using washers might seem like a minor detail. However, these small metal discs play a crucial role in ensuring…

Technical Guide for Fastener

A Comprehensive Guide to Fasteners: Types of Bolts, Nuts, and Washers

Fasteners play a crucial role in mechanically joining and securing multiple parts together. However, their performance and service life are significantly influenced by factors such as type,…

Consider Using Through-Bolts for Stronger Woodworking Connections

When it comes to woodworking, many people instinctively reach for nails or wood screws to join their pieces together. However, there’s a better option in many cases:…

Leave a Reply

Your email address will not be published. Required fields are marked *

Discover more from All About Bolts

Subscribe now to keep reading and get access to the full archive.

Continue Reading