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.
Aluminum
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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.
High-Strength 2024 Aluminum—The strongest aluminum washers we offer, these are comparable in strength to steel.
High-Strength Zinc-Yellow-Chromate-Plated 2024 Aluminum—A winning combination of strength and corrosion resistance. These washers are as strong as steel and withstand rust better than unplated 2024 aluminum.
For Screw Size | ID | OD | Thk. | Mil. Spec. | Specs. Met | Pkg. Qty. | Pkg. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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High-Strength 2024 Aluminum | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1 1/16" | 1.078" | 1.812" | 0.013" to 0.019" | AN960-D1716L | NAS1149-D1716H | 10 | 000000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1 1/16" | 1.078" | 1.812" | 0.083" to 0.097" | AN960-D1716 | NAS1149-D1790H | 5 | 000000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
High-Strength Zinc-Yellow-Chromate-Plated 2024 Aluminum | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1 1/16" | 1.078" | 1.812" | 0.013" to 0.019" | AN960-JD1716L | NAS1149-D1716J | 5 | 000000000 | 0000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1 1/16" | 1.078" | 1.812" | 0.028" to 0.036" | — | NAS1149-D1732J | 5 | 000000000 | 0000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1 1/16" | 1.078" | 1.812" | 0.083" to 0.097" | — | NAS1149-D1790J | 5 | 000000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws
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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.
Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
Top-and-Bottom Serration—Adds friction for extra gripping power.
For Screw Size | ID | OD | Thk. | Overall Ht. | Serration Location | Pkg. Qty. | Pkg. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Zinc-Plated Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1 1/16", M27 | 1.126" | 1.535" | 0.071" | 0.122" | Top and Bottom | 5 | 000000000 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Wave Spring Lock Washers
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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.
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.
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.
