What type of washer bolt

Referred to as both bolts and screws. Buy Now - Hex Head Bolts. A machine screw is a screw or bolt with a flat point. Available in a variety of drive types and heads, they fit a wide variety of applications. Often driven into tapped holes. Buy Now - Machine Screws. 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.

Buy Now - Shoulder Bolts. 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.

Buy Now - Socket Cap Screws. Set screws are most often headless aka blind , meaning that the screw is fully threaded and has no head. A blind set screw, known in UK as a grub screw, is almost always driven with an internal wrenching drive, such as a hex Allen key.

Socket set screws are installed in threaded holes or inserts. Buy Now - Socket Set Screws. Square Head Bolts 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. Buy Now - Square Head Bolts. Our deck screws feature a type 17 point notched point at the tip to aid in chip removal during thread cutting which allows for an easy installation in wood and composite deck materials.

A bugle head and square drive help to eliminate the stripping effect sometimes experienced with other types of drives. Buy Now - Deck 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. Buy Now - Hex Lag Screws. Self-drilling screws have a sheet metal thread with a self-driller cutting TEK point to pierce through 20 to 14 gauge metals.

The higher the TEK number, the larger the drill point to pierce heavier gauge metals. Buy Now - Self Drilling Screws. Sheet metal screws SMS have sharp cutting threads that cut into sheet metal, plastic or wood. They have a fully threaded shank and sometimes have a notched point at the tip to aid in chip removal during thread cutting. Buy Now - Sheet Metal 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. Buy Now - Wood Screws. The cap nut, also known as the acorn nut, gets its name from its shape. The nut has a domed top to prevent contact with the external thread. Buy Now - Acorn Cap Nuts. Used with cotter pins to prevent loosening, a castellated nut, also called a castle or slotted nut, is a not with slots cut into the top. Used in low-torque applications such as holding a wheel bearing in place.

Buy Now - Castle Nuts. A coupling nut is a threaded fastener used for joining two male threads, most commonly threaded rod. The outside of the fastener is a hex so it can be driven with a wrench. Buy Now - Coupling Nuts. A flange nut is a nut that has a wide flange at one end which acts as an integrated washer that does not move or spin. The serrated flange distributes the pressure of the nut over the part being secured and creates a locking action to prevent loosening.

Buy Now - Flange Nuts. Hex finish nuts are used for fastening to a hex cap screw, socket cap screw or bolt. The most common nuts, hex finish nuts are hex shaped with internal threads and driven with a wrench. Buy Now - Hex Finished Nuts. A jam nut is often used when a nut needs to be locked in place without clamping to another object.

Hex jam nuts are hex shaped with internal threads, but they are thinner than hex finish nuts. Buy Now - Hex Jam Nuts. Larger, heavier, and thicker than a standard hex nut.

Heavy hex nuts are hex shaped, internally threaded, and driven with a wrench. Often used with hex cap screws and carriage bolts. Buy Now - Heavy Hex Nuts. A machine nut is hex shaped with internal threads. Also known as a keps nut, a k-nut or a washer nut, a keps-k lock nut has an attached free spinning lock washer.

Keps nuts are designed to make assembly more convenient. A knurled head thumb nut or thumb nut has a knurled outside surface rather than a hex, which facilitates tightening by hand. Often used in decorative finishes or applications. Buy Now - Knurled Thumb Nuts. A low-profile lock nut is hex shaped, internally threaded with a nylon insert. The nylon material prevents loosening from vibration and cross threads to stop the nut from backing off of the fastener. A nylon insert lock nut is hex shaped, internally threaded with a nylon insert.

Buy Now - Nylon Lock Nuts. Commonly known as stover nuts, prevailing torque lock nuts have chamfered corners and a conical top.

The distortion in the top threads resists loosening from vibration. Also called one-way nuts, they can only be installed one way and are often used in high temperature application because they are all metal with no nylon insert. Buy Now - Stover Nuts. Slotted hex nuts are nuts with portions cut out designed to be used with a cotter ping to create a locking mechanism. These nuts are similar to a castle nut but have a lower profile which sometimes makes them a better option.

Buy Now - Slotted Hex Nuts. A four-sided nut that may be flat or beveled on top. Square nuts provide a greater surface contact area which provides more resistance to loosening.

Typically mated with square head bolts. Buy Now - Square Nuts. Structural hex nuts are comparable to finish nuts but are made to be thicker and much stronger. They are typically used in steel to steel structural connections. Buy Now - Structural Hex Nuts. A t-nut or tee nut is used to fasten wood, particle or composite board leaving a flush surface.

A long thin body with a flange at one end resembles a T in profile. T-nuts often have 3 or 4 prongs that sink into the surface providing better retention. Buy Now - T Nuts. Shear nuts are cone nuts with a hexagonal gripping point. They are designed with an intentional flaw to snap the hexagonal head off once the maximum torque is reached. Leaving behind a protective cone nut that cannot be easily removed. Buy Now - Break Away Nuts.

Tri-groove security nuts have a tapered diameter making them difficult to grip with grabbing devices such as adjustable wrenches or pliers. These nuts require a special unconventional gripping device to install them making them more secure than a typical nut.

Buy Now - Tri-Groove Nuts. Wing nuts are threaded nuts with wings on each side of the body allowing for manual turning and installation.

Easy hand assembly and used when the nut needs to be removed often. Buy Now - Wing Nuts. Rivet backup washers are used to create a larger install diameter giving the rivet a better hold and more support. Backup washers can help to prevent pull-through of a rivet. Buy Now - Rivet Backup Washers. Belleville conical washers are a type of washer that adds extra tension to a fastener assembly. They are commonly used in stacks to increase the load, deflection or both to an assembly depending on the stack.

These washers can be considered lock washers because they add tension and absorb vibration to an assembly. Buy Now - Belleville Washers. Dock washers are heavy duty washers, often used to build docks. Also used in heavy duty construction where a thick washer is needed, dock washers are similar to fender washers with a small inside diameter hole.

Buy Now - Dock Washers. Fender washers are round washers with a small inside diameter hole. Fender washers are used to prevent pull-through and provide a greater bearing surface under the fastener. Buy Now - Fender Washers. Extra thick fender washers are thicker than standard fender washers and are used to prevent pull-through and provide a greater bearing surface under the fastener.

Finishing cup washers form a cup for the head of the screw or fastener to fit in, creating a finish flush with the top of the head. Used for finishing, cup washers are shaped like a cup. Buy Now - Finishing Cup Washers. Flat washers are round outer diameter thin plates with a center hole punched to the size of the bolt or screw. Flat washers are used to distribute loads of threaded bolts, screws and nuts evenly as the fastener is tightened. Buy Now - Standard Flat Washers. Spring Lock Washer - Zinc 46 products.

Hex Nut - Hot-dip Galvanized Steel 21 products. T-nut with Four Prongs - Zinc 19 products. Metric Hex Nut - Zinc 13 products. Wing Nut - Zinc 22 products. Zinc Hex Lock Nut - Metric 13 products. Machine Screw Hex Nut - Zinc 25 products. Hex Nut - Grade 5 - Zinc 16 products.

Type D Nut 9 products. Hex Nut - Stainless Steel 12 products. Fender Washers have applications in automobiles, plumbing, sheet metal, electrical applications, attaching signboards, panels, and drywall. Shoulder washers have a shoulder-type structure. They are used to insulate screws, wire, or any other part from the rest of the assembly. These washers work as a flat washer for flat head countersunk screws.

It provides a flush surface to countersunk screws. Spring washers provide an axial load to fasteners during vibration or shock. Therefore it helps in keeping the nut and bolt is tightened condition. Following types of spring, washers are available in the market. Belleville or Conical spring washers keep an assembly in tension during thermal expansion and contraction conditions.

This type of spring washer supports a very high load with small deflection. Conical washer load-deflection characteristics depend on its height and thickness ratio.

Curved spring washer supports relatively small loads and a wide deflection range. This type of spring washer provides a uniform spring rate over the deflection range and has linear load-deflection characteristics.

Curved spring washers have applications in flexible and load-cycling products. Dome spring washers have very high load capacity with a relatively small deflection range. They have ground curves to create a flatter load-bearing surface. Finger Spring Washers are used to counteract noise, excess wear, vibrations, and reducing skidding wear on rotating elements.

These washers are manufactured from carbon steel. Finger spring washers combine the flexibility of a crescent washer with the distributed load points of a wave washer. Wave Spring Washers have good load capacity and deflection.

They work as cushion springs or spacers on a shaft. Wave spring washers have a moderate load capacity and deflection range. Locking Washers is a type of spring washer.