1 3/8" Screw Size Washers

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51 Products

General Purpose Washers

Your go-to metal washer for every screw size. Washers take the pressure off nuts and screws to protect mounting surfaces.

Stainless Steel About Stainless Steel

18-8 Stainless Steel—The choice for wet and outdoor environments, these washers resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these washers have a dark, matte coating to create a finished look. They resist rust in wet and outdoor environments, but won't hold up to harsh chemicals as well as 316 stainless steel.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.

	ID	OD	Thk.	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1 3/8"	1.500"	3.250"	0.133" to 0.147"	5	92141A049	000000


	Black-Oxide 18-8 Stainless Steel



			1 3/8"	1.500"	2.750"	0.100" to 0.180"	1	96765A215	0000


			Highly Corrosion-Resistant 316 Stainless Steel



					1 3/8"	1.500"	2.750"	0.100" to 0.180"	1	90107A122	0000

Steel

Black-Oxide Steel—Typically chosen for their appearance, these washers have a dark, matte coating that creates a finished look. They offer minimal corrosion resistance, so they're best for dry environments.

Black Super-Corrosion-Resistant-Coated Steel—Combines a finished appearance with the rust resistance of 316 stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.

Material Certificate—Washers include a report with a traceable lot number.

For Fastener Strength Grade/Class—If you require screws or nuts with a specific fastener strength rating, make sure your washer matches the grade or class.

	ID	OD	Thk.	For Fastener Strength Grade/Class	Certificate Type	Pkg. Qty.		Pkg.
Black-Oxide Steel



	1 3/8"	1.500"	2.750"	0.235" to 0.265"	—	—	1	93550A110	000000


	Black Super-Corrosion-Resistant-Coated Steel



			1 3/8"	1.500"	3.250"	0.136" to 0.160"	SAE Grade 8	Material Certificate	1	98026A124	00000

SAE Washers

Originally designed for the automotive industry, these washers conform to SAE sizing standards. They generally have smaller diameters than USS washers to fit in cramped spots and are thinner to create more precise gaps. Washers distribute pressure under screws and nuts to protect your mounting surface.

Stainless Steel About Stainless Steel

18-8 Stainless Steel—The choice for wet and outdoor environments, these washers resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.

Material Certificate—Washers include a report with a traceable lot number.

	ID	OD	Thk.	Certificate Type	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1 3/8"	1.500"	2.750"	0.136" to 0.213"	—	1	96659A123	00000


	Black-Oxide 18-8 Stainless Steel



			1 3/8"	1.500"	2.750"	0.136" to 0.213"	Material Certificate	1	96659A146	0000


			Highly Corrosion-Resistant 316 Stainless Steel



					1 3/8"	1.500"	2.750"	0.136" to 0.213"	—	1	91950A055	0000

Steel

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.

Steel—Best for dry environments since moisture will cause these washers to rust.

Corrosion-Resistant Galvanized Steel—These washers combine the strength of steel with the rust resistance of stainless steel. They're an economical alternative to 18-8 stainless steel in wet and outdoor environments, but they won't hold up to salt water and chemicals.

For Fastener Strength Grade/Class—If you require screws or nuts with a specific fastener strength rating, make sure your washer matches the grade or class.

	ID	OD	Thk.	For Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	1 3/8"	1.500"	2.750"	0.136" to 0.192"	—	ASME B18.21.1	5	90126A041	00000


	Zinc-Yellow-Chromate-Plated Steel



			1 3/8"	1.500"	2.750"	0.136" to 0.192"	SAE Grade 8	ASME B18.21.1	5	98023A042	00000


			Steel



					1 3/8"	1.500"	2.750"	0.136" to 0.192"	—	ASME B18.21.1	5	91083A041	0000


					Corrosion-Resistant Galvanized Steel



							1 3/8"	1.500"	2.750"	0.136" to 0.192"	—	ASME B18.21.1	1	93012A123	0000


							Black Super-Corrosion-Resistant-Coated Steel



									1 3/8"	1.500"	2.750"	0.136" to 0.192"	—	ASME B18.21.1	1	91434A445	0000

Aluminum

One-third the weight of steel, these washers are commonly used in robotics, automation, and other applications that have weight limits. They're an alternative to stainless steel for rust resistance, but aren't as strong.

	ID	OD	Thk.	Pkg. Qty.		Pkg.
Aluminum



	1 3/8"	1.500"	2.750"	0.136" to 0.213"	1	96596A131	00000

Brass

Softer than most metals, brass washers won't damage other fastening components.

Brass—With a warm, polished look, these washers are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments.

	ID	OD	Thk.	Pkg. Qty.		Pkg.
Brass



	1 3/8"	1.500"	2.750"	0.136" to 0.213"	1	90231A131	000000

Copper

These have the best conductivity of all our metal washers. They're often used to secure electrical connections inside breaker panels and to fasten components on printed circuit boards. They're also the softest of all our metal washers, so they won't damage screws and nuts. However, copper washers aren't as corrosion resistant as brass washers, and will develop a green patina over time.

	ID	OD	Thk.	Pkg. Qty.		Pkg.
Copper



	1 3/8"	1.500"	2.750"	0.136" to 0.213"	1	93661A131	000000

Oversized Washers

Cover oversized holes or use these washers as spacers and levelers. Compared to general purpose washers, these have a larger diameter or thickness.

Stainless Steel About Stainless Steel

Image of Product. Front orientation. Contains Annotated. Washers. Oversized Washers.

Image of Specification. Front orientation. Washers. Oversized Washers.

18-8 Stainless Steel—The choice for wet and outdoor environments, these washers resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

	ID	OD	Thk.	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1 3/8"	1.500"	2.750"	0.235" to 0.265"	1	98900A316	000000

Steel

Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.

Material Certificate—Washers include a report with a traceable lot number.

For Fastener Strength Grade/Class—If you require screws or nuts with a specific fastener strength rating, make sure your washer matches the grade or class.

	ID	OD	Thk.	For Fastener Strength Grade/Class	Certificate Type	Pkg. Qty.		Pkg.
Zinc-Yellow-Chromate-Plated Steel



	1 3/8"	1.438"	2.750"	0.235" to 0.264"	SAE Grade 8	—	1	98025A043	00000


	Black-Oxide Steel



			1 3/8"	1.500"	2.750"	0.240" to 0.260"	—	Material Certificate	1	98029A116	00000

Structural Washers

Distribute pressure under structural screws and nuts in columns, joists, and I-beams. These thick washers are tested and certified to meet industry standards for handling high-stress loads.

Steel

Steel—Best for dry environments since moisture will cause these washers to rust.

For Fastener Strength Grade/Class—If you require screws or nuts with a specific fastener strength rating, make sure your washer matches the grade or class.

	ID	OD	Thk.	For Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Steel



	1 3/8"	1.500"	2.813"	0.136" to 0.177"	ASTM Grade A325, ASTM Grade A490	ASTM F436 Type 1	10	98038A111	00000


	Corrosion-Resistant Galvanized Steel



			1 3/8"	1.500"	2.813"	0.136" to 0.177"	ASTM Grade A325, ASTM Grade A490	ASTM F436 Type 1	10	98119A121	00000

USS Washers

These washers meet USS sizing specifications and typically have larger diameters than SAE washers. As a result, they accommodate larger screws and nuts and distribute pressure across a wider surface area. They are also thicker, so they withstand heavier loads and span wider gaps when used as spacers.

Stainless Steel About Stainless Steel

18-8 Stainless Steel—The choice for wet and outdoor environments, these washers resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.

	ID	OD	Thk.	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1 3/8"	1.500"	3.250"	0.153" to 0.213"	ASME B18.21.1	1	93852A145	00000


	Black-Oxide 18-8 Stainless Steel



			1 3/8"	1.500"	3.250"	0.153" to 0.213"	ASME B18.21.1	1	93852A184	00000


			Highly Corrosion-Resistant 316 Stainless Steel



					1 3/8"	1.500"	3.250"	0.153" to 0.213"	ASME B18.21.1	1	93852A142	00000

Steel

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.

Steel—Best for dry environments since moisture will cause these washers to rust.

For Fastener Strength Grade/Class—If you require screws or nuts with a specific fastener strength rating, make sure your washer matches the grade or class.

	ID	OD	Thk.	For Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	1 3/8"	1.500"	3.250"	0.153" to 0.213"	—	ASME B18.21.1	5	90108A042	000000


	Zinc-Yellow-Chromate-Plated Steel



			1 3/8"	1.500"	3.250"	0.136" to 0.160"	SAE Grade 8	ASME B18.21.1	1	98026A041	0000


			Steel



					1 3/8"	1.500"	3.250"	0.153" to 0.213"	—	ASME B18.21.1	5	91081A042	0000


					Corrosion-Resistant Galvanized Steel



							1 3/8"	1.500"	3.250"	0.153" to 0.213"	—	ASME B18.21.1	5	98970A313	00000


							Black Super-Corrosion-Resistant-Coated Steel



									1 3/8"	1.500"	3.250"	0.153" to 0.213"	—	ASME B18.21.1	1	96582A435	0000


									1 3/8"	1.500"	3.250"	0.153" to 0.213"	SAE Grade 8	—	1	98189A630	00000

Plastic Washers

All of these washers are lightweight, nonconductive, and naturally rust resistant. They are commonly used in electronics and automation applications to take the pressure off screws and nuts and protect mounting surfaces.

Chemical-Resistant High-Temperature PTFE—The most chemical-resistant plastic washers we offer, these stand up to the widest range of harsh acids, bases, solvents, and corrosive cleaners, even at temperatures up to 500° F. Their slippery surface reduces friction between the washer, fastener, and mounting surface to prevent sticking when tightening and loosening. They are also good electrical insulators.

					Temp. Range
	For Screw Size	ID	OD	Thk.	Min.	Max., ° F	Color	Pkg. Qty.		Pkg.
Chemical-Resistant High-Temperature PTFE



		1 3/8"	1.500"	2.585"	0.018" to 0.023"	Not Rated	500	White	1	95630A133	00000


		1 3/8"	1.500"	2.585"	0.115" to 0.135"	Not Rated	500	White	1	95630A132	0000

Mil. Spec. Washers

These washers are manufactured and tested to strict U.S. military standards for material and construction. They take the pressure off screws and nuts to protect mounting surfaces.

Steel

Low-Friction Cadmium-Plated Steel—The plating reduces friction between the washer, fastener, and mounting surface to prevent sticking when fastening and loosening. It also creates a barrier against rust that's comparable to zinc yellow-chromate plating.

	ID	OD	Thk.	Mil. Spec.	Specs. Met	Pkg. Qty.		Pkg.
Low-Friction Cadmium-Plated Steel



	1 3/8"	1.500"	3.250"	0.153" to 0.213"	MS27183-31	ASME B18.21.1	1	98032A362	000000

Mil. Spec. Split Lock Washers

These washers are manufactured and tested to strict U.S. military standards for material and construction. As you tighten, the uneven ends bite into the nut or screw so it won't loosen due to mild vibration. While they don't hold as tightly as other lock washers, they are a great fit for electrical panels, light fixtures, and other light duty assemblies. Split lock washers are not reusable, and they only work with fasteners that have right-hand threads.

Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.

	ID	OD	Thk.	Mil. Spec.	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Yellow-Chromate-Plated Steel



	1 3/8"	1.379"	2.219"	0.344"	MS35338-56	ASME B18.21.1	2	91475A373	00000

Abrasion-Resistant Cushioning Washers

These SBR rubber washers are reinforced with cloth fibers to resist wear from rubbing and scraping surfaces. Use them to cushion joints and dampen vibration.

	ID	OD	Thk.	Min. Temp.	Max. Temp., ° F	Hardness	Color	Pkg. Qty.		Pkg.
Polyester Fiber-Filled SBR Rubber



	1 3/8"	1.438"	2.500"	0.105" to 0.145"	Not Rated	170	Durometer 70A	Black	10	90131A622	000000


	1 3/8"	1.500"	3.250"	0.156" to 0.218"	Not Rated	170	Durometer 70A	Black	2	90131A652	0000

Tension-Indicating Structural Washers

Fasten structural screws and nuts securely without overtightening. When you see orange dye, you'll know you've applied the correct tension, so you don't accidentally strip threads. These washers distribute pressure under fasteners in columns, joists, and I-beams. They are tested and certified to meet industry standards for handling high-stress loads.

Steel

For Fastener Strength Grade/Class—If you require screws or nuts with a specific fastener strength rating, make sure your washer matches the grade or class.

	ID	OD	Thk.	For Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Corrosion-Resistant Galvanized Steel



	1 3/8"	1.442"	2.760"	0.158" to 0.270"	ASTM Grade A325	ASME B18.2.6, ASTM F959 Type A325	1	95318A118	00000

Tooth Lock Washers

Grip tighter than split lock washers to prevent nuts and screws from loosening in applications with constant movement, such as conveyors. Tooth lock washers typically can't be reused because the teeth often get bent when tightened.

Internal Tooth

Internal teeth dig into the nut or screw to prevent it from backing out. Unlike external-tooth lock washers, these have a smooth outside edge, so they are less likely to mar your material or snag on objects. However, they don’t grip quite as well. Pair them with fasteners that have small diameters, such as fillister and cheese head screws.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

	ID	OD	Thk.	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	1 3/8"	1.394"	1.950"	0.060" to 0.064"	ASME B18.21.1	1	91113A051	00000

Wave Spring Lock Washers

The wavy shape flexes like a spring to keep nuts and screws secure on slightly uneven surfaces. These washers add a small amount of tension to stop fasteners from backing out due to mild vibration. While they don't hold as well as other lock washers, they do grip slightly better than curved washers. They work best in electrical panels, light fixtures, and other light duty assemblies. Since these washers hold their shape when untightened, you can reuse them a handful of times without losing strength.

Steel—Best for dry environments since moisture will cause these washers to rust.

3 Wave—More points of contact than single-wave washers for a better grip.

	No. of Waves	ID	OD	Thk.	Overall Ht.	Pkg. Qty.		Pkg.
Steel



	1 3/8"	3	1.406"	1.812"	0.020"	0.130"	5	90134A051	000000

Extreme-Vibration-Resistant Wedge Lock Washers

When it's critical to keep bolted assemblies secure, choose these two-piece lock washers with the tightest grip of all. They stop nuts and screws from loosening in heavy machinery that experiences jarring starts and stops, such as compressors and compactors. Serrations on the outside bite into the fastener and mating surfaces, while wedges on the inside lock the two pieces together. When the nut or screw starts to loosen, the wedges drive more tightly together to maintain tension. You can reuse these washers up to fifteen times, as long as the serrations and wedges are not worn down. They are comparable to NORD-LOCK® or Sherex TEC® washers.

Wedge Lock

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.

Highly Corrosion-Resistant Zinc-Flake-Coated Steel—With 40 times the corrosion resistance of zinc-plated steel, these withstand rust as well as 316 stainless steel. They have been tested to extreme standards, including 1,000 hours of salt spray. They are similar to Magni-coated washers.

	ID	OD	Thk.	Pkg. Qty.		Pkg.
Highly Corrosion-Resistant 316 Stainless Steel



	1 3/8", M36	1.470"	2.170"	0.260" to 0.280"	1	91812A822	000000


	Highly Corrosion-Resistant Zinc-Flake-Coated Steel



			1 3/8", M36	1.470"	2.170"	0.250" to 0.270"	1	91074A150	00000

Bearing Spring Lock Washers for Slotted Bearing Nuts


	For Chamfered Nuts

Designed for use with bearing nuts, these lock washers have a conical shape that presses like a spring against bearings, bushings, gears, and pulleys to hold them in place on your threaded shaft or spindle. They also have an inner tab that sits in the shaft or spindle’s keyway to prevent the nut from loosening.

Steel—Steel washers are strong and flexible.

Stainless Steel—Stainless steel washers are more corrosion and chemical resistant than steel washers.

External Tooth—Washers with external teeth grip components using their teeth, in addition to spring tension.

					Tab
	For Screw Size	ID	OD	Thk.	Wd.	Dp.	Overall Ht.	Tooth Location	Hardness	Specs. Met	For Bearing Nut Specs. Met		Each
For Chamfered Nuts







				Steel

				1 3/8"	1.396"	2.250"	0.054"	0.176"	0.094"	0.221"	External	Not Rated	ANSI/ABMA 8.2	ANSI/ABMA 8.2	90391A159	00000




						Stainless Steel

						1 3/8"	1.396"	2.250"	0.054"	0.176"	0.094"	0.221"	External	Not Rated	ANSI/ABMA 8.2	ANSI/ABMA 8.2	90464A180	00000

Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws

Stop socket head screws from wiggling loose on equipment with constant, vigorous vibration, such as engines, turbines, and generators. These washers have a small diameter to fit under screws with narrow heads. Similar to a spring, they flatten under pressure to add tension between mating surfaces. As long as the washers aren't deformed or otherwise damaged, you can reuse them indefinitely without losing locking strength. Also known as conical washers and Belleville washers.

Stack multiple washers in the same direction to double or triple how much weight they can bear. Stack washers in opposite directions for better deflection, which means they compress further and withstand more shock and movement without loosening.

18-8 Stainless Steel—The choice for wet and outdoor environments, these washers won't rust when exposed to moisture. However, they can't hold up to the harsh chemicals that 316 stainless steel can.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

Steel—Best for dry environments since moisture will cause these washers to rust.

Top-and-Bottom Serration—Adds friction for extra gripping power.

	ID	OD	Thk.	Overall Ht.	Serration Location	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1 3/8", M36	1.496"	2.126"	0.118"	0.185"	Top and Bottom	1	90895A116	000000


	Zinc-Plated Steel



			1 3/8", M36	1.496"	2.126"	0.098"	0.165"	Top and Bottom	1	90895A221	0000


			Steel



					1 3/8", M36	1.496"	2.126"	0.098"	0.165"	Top and Bottom	5	93501A040	00000

Split Lock Washers

Stop nuts and screws from loosening due to mild vibration. As you tighten, the uneven ends bite into the nut or screw so it won't back out. While they're not as vibration resistant as other lock washers, they are a great fit for electrical panels, light fixtures, and other light duty assemblies. Split lock washers are not reusable, and they only work with fasteners that have right-hand threads.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.

	ID	OD	Thk.	For Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1 3/8"	1.408"	2.219"	0.344"	—	ASME B18.21.1	1	92146A050	00000


	Highly Corrosion-Resistant 316 Stainless Steel



			1 3/8"	1.408"	2.219"	0.344"	—	ASME B18.21.1	1	92147A511	0000


			Zinc-Plated Steel



					1 3/8"	1.408"	2.219"	0.344"	—	ASME B18.21.1	5	91102A056	00000


					Zinc-Yellow-Chromate-Plated Steel



							1 3/8"	1.408"	2.301"	0.422"	SAE Grade 8	ASME B18.21.1	1	91104A060	0000


							Black-Oxide Steel



									1 3/8"	1.408"	2.219"	0.344"	—	ASME B18.21.1	1	5185N124	0000