Eaton B-Line Square Washer Ste...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$51.97
$1.46
Eaton B-Line series strut fittings and accessories, 1.62" Height, 1.62" Length, 1.62" Width, .18lbs, Steel, Square washer, Hole size 3/8 in diameter |

Eaton B-Line Square Washer Steel 3/8 Inch Hole 5/16 Inch Bolt Electro-Plated

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Model: B200ZN
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$51.97
$1.46
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Eaton B-Line Square Washer Steel 3/8 Inch Hole

Professional Strut Channel Fastening System Component

The Eaton B-Line Square Washer delivers exceptional load distribution and fastening reliability for strut channel mounting applications. This steel square washer with 3/8 inch diameter hole provides reliable fastening support designed for professional electricians, mechanical contractors, and facility installers, offering the proven strength and versatile mounting capabilities that professionals trust from the industry leader in strut channel systems.

Professional Features & Benefits

Structural Performance

  • Steel Construction - Provides exceptional strength and durability for demanding structural applications with reliable load distribution across mounting surfaces
  • 3/8 Inch Diameter Hole - Precisely engineered hole size ensures proper fit with standard fasteners for secure and reliable connections
  • 5/16 Inch Bolt Compatibility - Designed for optimal performance with 5/16 inch bolt thread rod size for professional fastening applications
  • Compact 1.62 x 1.62 Inch Design - Square configuration provides maximum bearing surface while maintaining space-efficient installation profile

Installation Efficiency

  • Electro-Plated Finish - Superior corrosion resistance and surface protection extends service life in demanding environments
  • Lightweight 0.18 lb Design - Easy handling and installation reduces labor time while maintaining structural integrity
  • Square Washer Configuration - Prevents rotation and provides enhanced bearing surface for secure fastening connections

Technical Specifications

Material: Steel construction with electro-plated finish, Dimensions: 1.62 inches height x 1.62 inches length x 1.62 inches width, Weight: 0.18 pounds, Hole Size: 3/8 inch diameter, Bolt Compatibility: 5/16 inch bolt thread rod size, Type: Square washer configuration, Finish: Electro-plated for corrosion resistance

Installation & Usage

  1. Position square washer between fastener head and mounting surface ensuring proper alignment with bolt hole
  2. Insert 5/16 inch bolt through 3/8 inch diameter hole maintaining square orientation to prevent rotation
  3. Apply appropriate torque specifications according to application requirements and structural load demands
  4. Verify secure connection and proper load distribution across washer bearing surface
  5. Inspect electro-plated finish for any damage and ensure corrosion protection integrity
  6. Document installation according to project specifications and structural engineering requirements

Professional Applications

Ideal for:

  • Strut Channel Mounting - Essential component for secure fastening of strut channel systems to structural supports
  • Electrical Conduit Support - Provides reliable load distribution for conduit mounting and electrical system installations
  • Mechanical Equipment Mounting - Critical fastening component for HVAC equipment, piping systems, and mechanical supports
  • Structural Framing Applications - Professional-grade washer for steel framing and structural connection applications
  • Equipment Rack Installation - Secure fastening solution for equipment racks and industrial mounting systems
  • Cable Management Systems - Reliable fastening component for cable tray and cable management installations
  • Seismic Bracing Systems - Critical component for earthquake-resistant bracing and structural support systems
  • Industrial Support Structures - Professional fastening solution for heavy-duty industrial and commercial applications

Electro-Plated Steel Advantage

The electro-plated steel construction provides superior corrosion resistance and extended service life compared to standard steel washers. This advanced finish protects against moisture, chemicals, and environmental factors while maintaining the structural integrity and load-bearing capabilities required for professional installations in commercial, industrial, and institutional environments.

Why Choose B-Line Quality?

B-Line's decades of structural support innovation and manufacturing excellence ensure this square washer meets the highest standards for load distribution, corrosion resistance, and installation reliability. Trusted by electricians, mechanical contractors, and facility professionals worldwide, B-Line fastening components deliver the consistent performance and structural integrity that professionals demand for critical mounting and support applications.

Manufacturer Resources

Product Specs

Bolt Thread Rod Size:
5/16"
Certifications:
Not Applicable
Product Height:
1.62 in
Product Length Depth:
1.62 in
Product Weight:
.18 lb
Product Width:
1.62 in
Special Features:
Hole size 3/8 in diameter
Product Type:
Square washer
Department:
Electrical
Product Group:
Fasteners
Product Subgroup:
Washers / Nuts / Bolts / Screws
Product Finish:
Electro-plated
Product Details:
Square washer
Product Material:
Steel

B-LINE B200ZN – Frequently Asked Questions

1) What size bolt does the Eaton B-Line B200ZN square washer take?
The B200ZN square washer is made for 5/16 inch bolt or threaded rod, and the hole itself is 3/8 inch diameter. That extra clearance is deliberate on strut work, it lets you swing the washer into position over a channel nut or rod without fighting the hole. If you are running 3/8 inch rod, this is not the washer for that rod size.
2) How much bearing surface does a B-Line square washer give me over a strut channel slot?
It measures 1.62 inches across, square, so you get roughly an inch and a half of steel spanning the opening rather than the small round footprint of a standard cut washer. That is the whole point of a square washer on strut and on slotted or oversized holes: the flat sides bridge the slot and spread the clamp load into the channel lip instead of letting the bolt head pull through.
3) Will an electro-plated steel washer hold up outdoors or in a wet mechanical room?
The B200ZN is steel with an electro-plated (zinc) finish, which is an indoor and protected-environment coating. It handles the humidity of a mechanical room, a parking structure, or a covered dock. For direct weather exposure, coastal air, a pool room, or a wash-down area, step up to hot dip galvanized or stainless hardware instead. Electroplate is a thin sacrificial layer and it will not carry a fully exposed installation for the life of the building.
4) Is a square washer or a round flat washer better for hanging conduit and pipe off strut?
Square is the one to reach for anywhere the hole is slotted, oversized, or on a channel lip. The 1.62 inch square profile seats against the flat of the strut and resists rotation under the nut, so the connection does not creep as it is torqued. A round flat washer is fine on a drilled hole in plate where the bearing is even all the way around. On strut, on angle, or over any elongated opening, the square wins.
5) Do I need anything else besides the washer to fasten to strut channel?
The B200ZN square washer is the washer alone. A strut connection also needs the channel nut (spring or plain, sized 5/16-18 to match) and the 5/16 inch bolt or rod, plus a hex nut if you are running rod. Order those separately. The washer goes between the bolt head or nut and the mounting surface, holding its square orientation so it cannot spin as you torque down.
6) Will this washer fit under a standard 5/16 inch hex head, or does it need a larger head to bear on it?
A 5/16 inch hex bolt head bears fine on the B200ZN. The washer is 1.62 inches square with a 3/8 inch hole, so there is a wide, continuous ring of steel outside the hole for the head or nut to seat against, well beyond the roughly 1/2 inch across the flats of a 5/16 hex. No oversized head or second washer is needed.
How fast can I get the B-LINE B200ZN delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the B-LINE B200ZN come with a warranty?
Absolutely. The B-LINE B200ZN is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the B-LINE B200ZN?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the B-LINE B200ZN from ZenSupply?
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