Drive Types:
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Phillips and Frearson (PH)
Description: Features an X-shaped drive.
Applications: Commonly used for general-purpose fastening due to its crosshead design which allows for better torque and centering.
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Slotted (SL)
Description: Characterized by a single slot in the head.
Applications: Suitable for low-torque applications and easily adjustable with a flathead screwdriver.
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Combination (Combo)
Description: Combines slotted and Phillips drive types.
Applications: Versatile and convenient, allowing use with both flathead and Phillips screwdrivers.
Socket, Hex, or Allen
Description: Features a hexagonal hole for use with an Allen wrench.
Applications: Ideal for high-torque applications and commonly used in machinery, furniture assembly, and bicycles.
One Way
Description: Installs with a normal slotted driver but cannot be removed without special tools.
Applications: Used in security and tamper-resistant applications such as public restrooms and license plates.
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Square (SQ or SD)
Description: Also known as Robertson drive, features a square socket.
Applications: Provides high torque and minimizes cam-out, making it suitable for woodworking and construction.
Torx
Description: A six-pointed star pattern, designed to prevent cam-out and stripped heads.
Applications: High-torque applications requiring precision, such as automotive and electronics assembly.
Washer Types:
Flat Washer
Description: A simple flat washer used to distribute load.
Applications: Available in various standards (SAE, USS) and used to prevent damage to surfaces when tightening bolts.
Fender Washer
Description: An oversized flat washer for broader load distribution.
Applications: Used especially on soft or thin materials to prevent pull-through.
Finishing Washer
Description: Provides a 'finished' look, typically used with oval head screws.
Applications: Decorative purposes where a neat appearance is desired.
Split Lock Washer
Description: A washer that prevents nuts and bolts from backing out.
Applications: Commonly used in vibrating environments to maintain secure fastening.
External Tooth Lock
Description: Features external 'teeth' that bite into the surface to prevent loosening.
Applications: Offers strong locking capability for applications requiring secure fastening.
Internal Tooth Lock
Description: Contains internal 'teeth' for preventing fastener loosening.
Applications: Suitable for situations where external teeth might cause damage.
Square Washer
Description: Square-shaped washer.
Applications: Often used in timber construction to provide a large bearing surface.
Dock Washer
Description: Larger outside diameter and thicker than standard washers.
Applications: Used in heavy-duty and dock construction applications.
Ogee Washer
Description: Thick, large diameter washers with a curved or sculpted appearance.
Applications: Utilized in dock and wood construction for structural support.
Sealing Washer
Description: A soft neoprene washer bonded to a metal backing.
Applications: Creates a watertight seal, used in plumbing, automotive, and HVAC applications to prevent leaks and dampen noise and vibration.
Fastener Categories:
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Wood Screws (WS)
Description: Screws with a smooth shank and tapered point for use in wood.
Applications: Ideal for woodworking projects and furniture assembly.
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Machine Screws (MS)
Description: Screws with threads for use with a nut or tapped hole.
Applications: Commonly used in machinery, appliances, and electronics.
Thread Cutting Machine
Description: Machine screws with a thread cutting (self-tapping) point.
Applications: Used in applications requiring the screw to cut its own thread in metal or hard plastics.
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Sheet Metal Screws (SMS)
Description: Fully threaded screws with a point for use in sheet metal.
Applications: Ideal for fastening thin pieces of metal together.
Self Drilling SMS
Description: A sheet metal screw with a self-drilling point.
Applications: Eliminates the need for pre-drilling holes in sheet metal and other thin materials.
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Hex Bolts (HHMB or HXBT)
Description: Bolts with a hexagonal head and threads for use with a nut or tapped hole.
Applications: Used in construction, machinery, and automotive applications.
Carriage Bolts
Description: Bolts with a smooth rounded head that has a small square section underneath.
Applications: Often used in wood applications where a smooth head is desired.
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Lag Bolts (Lag)
Description: Bolts with a wood thread and pointed tip.
Applications: Used for heavy-duty wood fastening, such as in deck and fence construction.
Socket Screws
Description: Socket screws, also known as Allen Head, are fastened with a hex Allen wrench.
Applications: Used in applications requiring a clean and flush finish.
Set Screws
Description: Machine screws with no head for screwing all the way into threaded holes.
Applications: Used to secure an object within or against another object, such as fixing a pulley or gear to a shaft.
Eye Bolts
Description: A bolt with a circular ring on the head end.
Applications: Used for attaching a rope or chain for lifting or securing loads.
Eye Lags
Description: Similar to an eye bolt but with wood threads instead of machine threads.
Applications: Used for securing items to wood or other soft materials.
J-Bolts
Description: J-shaped bolts are used for tie-downs or as an open eye bolt.
Applications: Commonly used in building construction and securing items.
U-Bolts
Description: Bolts in U shape for attaching to pipe or other round surfaces. Also available with a square bend.
Applications: Used to secure pipes, conduit, and other cylindrical objects.
Shoulder Bolts
Description: Shoulder bolts (also known as stripper bolts) are used to create a pivot point.
Applications: Often used in machinery and automotive applications to create a rotating joint or pivot.
Elevator Bolts
Description: Bolts with a large, flat head, commonly used in conveyor systems.
Applications: Designed to hold together parts of conveyor belts and similar applications.
Sex Bolts
Description: J-shaped bolts are used for tie-downs or as an open eye bolt.
Applications: Commonly used in building construction and securing items.
Mating Screws
Description: Bolts in U shape for attaching to pipe or other round surfaces. Also available with a square bend.
Applications: Used to secure pipes, conduit, and other cylindrical objects.
Hanger Bolts
Description: Shoulder bolts (also known as stripper bolts) are used to create a pivot point.
Applications: Often used in machinery and automotive applications to create a rotating joint or pivot.
Nut Types:
Hex
Description: A six-sided nut, also referred to as a Finished Hex Nut.
Applications: Used for general-purpose fastening with bolts and screws.
Heavy Hex
Description: A heavier pattern version of a standard hex nut.
Applications: Provides extra strength and is used in heavy-duty applications
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Nylon Insert Lock (Nylock)
Description: A nut with a nylon insert to prevent backing off.
Applications: Ideal for vibration-resistant applications.
Jam
Description: A hex nut with a reduced height.
Applications: Used as a lock nut or in tight spaces where a standard hex nut would not fit.
Nylon Insert Jam Lock
Description: A Nylock nut with a reduced height.
Applications: Combines the low profile of a jam nut with the vibration resistance of a Nylock.
Wing
Description: A nut with 'wings' for hand tightening.
Applications: Used where frequent adjustments or removals are needed without tools.
Cap
Description: A nut with a domed top over the end of the fastener.
Applications: Used for decorative purposes and to cover exposed threads.
Acorn
Description: A high crown type of cap nut used for appearance.
Applications: Covers and protects the bolt end while providing a finished look.
Flange
Description: A nut with a built-in washer-like flange.
Applications: Distributes pressure evenly and provides a larger bearing surface.
Tee
Description: A nut designed to be driven into wood to create a threaded hole.
Applications: Commonly used in woodworking projects for securing bolts and screws.
Square
Description: A four-sided nut.
Applications: Provides a larger surface area for tightening and loosening with a wrench.
Prevailing Torque Lock
Description: A non-reversible lock nut used for high-temperature applications.
Applications: Used in applications where standard lock nuts might fail due to heat.
K-Lock or Kep
Description: A nut with an attached free-spinning external tooth lock washer.
Applications: Provides a locking feature to prevent loosening under vibration.
Coupling
Description: Long nuts used to connect pieces of threaded rod or other male fasteners.
Applications: Extends the length of threaded rods or bolts.
Slotted
Description: Slotted nuts used in conjunction with a cotter pin on drilled shank fasteners to prevent loosening.
Applications: Provides a secure locking mechanism, often used in machinery and automotive applications.
Castle
Description: Castle nuts used in conjunction with a cotter pin on drilled shank fasteners to prevent loosening.
Applications: Commonly used in automotive and machinery applications where safety and security are critical.
Head Styles
Flat
Description: A six-sided nut, also referred to as a Finished Hex Nut.
Applications: Used for general-purpose fastening with bolts and screws.
Oval
Description: A heavier pattern version of a standard hex nut.
Applications: Provides extra strength and is used in heavy-duty applications
Pan
Description: A nut with a nylon insert to prevent backing off.
Applications: Ideal for vibration-resistant applications.
Truss
Description: A hex nut with a reduced height.
Applications: Used as a lock nut or in tight spaces where a standard hex nut would not fit.
Round
Description: A Nylock nut with a reduced height.
Applications: Combines the low profile of a jam nut with the vibration resistance of a Nylock.
Hex
Description: A nut with 'wings' for hand tightening.
Applications: Used where frequent adjustments or removals are needed without tools.
Hex Washer
Description: A nut with a domed top over the end of the fastener.
Applications: Used for decorative purposes and to cover exposed threads.
Slotted Hex Washer
Description: A high crown type of cap nut used for appearance.
Applications: Covers and protects the bolt end while providing a finished look.
Socket Cap
Description: A nut with a built-in washer-like flange.
Applications: Distributes pressure evenly and provides a larger bearing surface.
Button
Description: A nut designed to be driven into wood to create a threaded hole.
Applications: Commonly used in woodworking projects for securing bolts and screws.
Washer Assamble Screw:
Type 1
Description: A six-sided nut, also referred to as a Finished Hex Nut.
Applications: Used for general-purpose fastening with bolts and screws.
Type 17
Description: A heavier pattern version of a standard hex nut.
Applications: Provides extra strength and is used in heavy-duty applications
Type 23
Description: A nut with a nylon insert to prevent backing off.
Applications: Ideal for vibration-resistant applications.
Type 25
Description: A hex nut with a reduced height.
Applications: Used as a lock nut or in tight spaces where a standard hex nut would not fit.
Type A
Description: A Nylock nut with a reduced height.
Applications: Combines the low profile of a jam nut with the vibration resistance of a Nylock.
Type B
Description: A nut with 'wings' for hand tightening.
Applications: Used where frequent adjustments or removals are needed without tools.
Type BA
Description: A nut with a domed top over the end of the fastener.
Applications: Used for decorative purposes and to cover exposed threads.
Type F
Description: A high crown type of cap nut used for appearance.
Applications: Covers and protects the bolt end while providing a finished look.
Pilot Point
Description: A nut with a built-in washer-like flange.
Applications: Distributes pressure evenly and provides a larger bearing surface.
Button
Description: A nut designed to be driven into wood to create a threaded hole.
Applications: Commonly used in woodworking projects for securing bolts and screws.