Washers

 Belleville Washers have a slight conical shape that gives it a spring like characteristic. These washers are also known as coned-disc spring or cupped spring washer and can be used as springs to apply a pre-load or flexibility to a bolted joint. Belleville washers are especially suited for high loads in small spaces.

Beveled Washers are a type of flat washer that is either square or circular with one surface consisting of a sloping angle. Generally used in structural applications, beveled washers fasten bolts through I-beam flanges to generate a parallel surface.

Bonded Sealing Washers are galvanized and have rubber attached to act as a cushion under the head of a bolt or nut, prevents leakage, and help seal joints. These washers are strong, yet soft and resilient enough to use with fragile materials.  Bonded sealing washers are typically used in outdoors applications to protect against corrosion.  

­ Combination Tooth Lock Washers have twisted teeth or prongs on both the inside and outside edges.  Combination tooth lock washers are ideal where a greater load bearing surface is desired, greater electrical connection is optimum, or used where two adjustable pieces need rotational adjustment maintained.

Countersunk External Tooth Washers bite into the nut or screw head and the contact surface creating a ratchet type action for superior material holding.  When tightened, the countersunk tooth washers increase tension to prevent loosening.

Countersunk Finishing Washers are cupped-shaped most frequently used with flat head or oval head screws. These finishing washers provide an additional holding area on fastened materials leaving a clean and neat appearance.

Dock Washers are similar to fender washers but a have a larger diameter and are thicker. Heavy duty galvanized dock washers are best used for outdoor, heavy duty load bearing applications.

External Tooth Lock Washers are circular with twisted teeth or prongs protruding from the outside edge that applies greater bolt tension when tightened.  This causes more uniform load distribution and resists loosening caused by corrosion or vibration.

Fender Washers were originally designed for auto body repair and have a larger outside working area.  Because they provide extra working area support, they are also used in plumbing, sheet metal and electrical applications. Fender washers are great for attaching signs, paneling and drywall.

Finishing Washers provide a tight, even pressure to secure two materials together.  Finishing washers are intended for use where consistent pressure is ‘key’ and to improve overall strength and quality of the product.

Flat Washers are circular with a center hole, are most commonly used to meet a broad range of fastening applications.

Hi Collar Lock Washers have a slightly smaller O.D. to use in confined areas. These washers have an increased thickness that sustains the overall locking abilities.  Hi Collar lock washers are recommended to be used with socket head cap screws and in areas where there are clearance restrictions. 

Internal Tooth Lock Washers are round with twisted teeth or prongs on the inside lip and hidden by the head of the screw or bolt. Internal tooth washers are preferred when appearance is critical for finished products.

Load Indicator Washers are used to ensure correct tension when installing A325 or A490 structural bolts.  Load indicating washers are an accurate, yet simple and cost effective means for inspecting bolts that require a specific level of clamping force and tension.

Lock Washers add pressure to the nut or bolt to prevent loosening.  Most common lock washers are split with one end is higher than the other. This provides a spring like action, adding pressure to hold the joined components tightly in place.

Plate Washers are generally made from low carbon steel and develop more friction when tightened against wood products.  Plate washers prevent bolt heads and nuts from being pulled into work surfaces and expansion anchors tighten easier.

SAE Washers are similar to USS washers but with a smaller inside and outside diameter and produced from thinner materials.  SAE washers are designed to meet the specifications in the automotive engineering field.

Torque Washers are formed with sharp prongs to sink into the mating surface. These washers are used where non-rotation between the washer and surface is required.

USS Washers are a thin, flat, circular type with a centrally located hole.  USS washers meet the majority of industrial manufacturing, maintenance, and repair applications.