Minerallac 5/16" Flat Cut Wash...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$50.11
$15.71
Minerallac 5/16" Flat Cut Washers - Zinc Plated Steel with 0.359" Inside Diameter, 100 Pack

Minerallac 5/16" Flat Cut Washers - Zinc Plated Steel with 0.359" Inside Diameter, 100 Pack

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Model: 40330J

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

$50.11
$15.71
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Minerallac 5/16" Flat Cut Washers - Zinc Plated Steel

Professional Grade Fastener Components for Reliable Assembly Applications

Minerallac delivers professional-quality 5/16" flat cut washers engineered for reliable fastener assembly applications. These zinc plated steel washers feature precise 0.359" inside diameter and 0.703" outside diameter specifications, designed for assembly around bolts or screws between bearing surfaces and attached components. The durable steel construction with zinc plated finish provides corrosion resistance and long-lasting performance in professional installations.

Professional Features & Benefits

  • 5/16" Size Specification: Precise dimensions ensure proper fit and reliable fastener assembly performance
  • Zinc Plated Finish: Corrosion-resistant coating extends service life and maintains appearance in various environments
  • Steel Construction: Durable material provides excellent strength and load distribution capabilities
  • 0.359" Inside Diameter: Accurate bore sizing ensures proper bolt clearance and secure assembly
  • 0.703" Outside Diameter: Optimal bearing surface area improves stress distribution across fastened materials
  • 0.08" Thickness: Consistent thickness specification provides reliable spacing and load transfer

Technical Specifications

  • Country Of Origin: China
  • Fits Bolt Sizes: 16-May
  • Inside Diameter: 0.359
  • Outside Diameter: 0.703
  • Product Color: Silver
  • Product Finish: Zinc Plated
  • Product Material: Steel
  • Product Type: Flat Cut Washer
  • Thickness: 0.08

Professional Applications

  • Construction and Building Assembly
  • Mechanical Equipment Installation
  • Electrical Panel and Enclosure Assembly
  • Industrial Machinery and Equipment
  • Commercial Facility Maintenance
  • Professional Repair and Service Operations

Why Choose Minerallac Quality?

Minerallac flat cut washers deliver consistent performance with precision-engineered dimensions and durable zinc plated steel construction. The reliable stress distribution and clearance hole spanning capabilities ensure professional-grade fastener assembly results across diverse applications.

Manufacturer Resources

Product Specs

Fits Bolt Sizes:
16-May
Inside Diameter:
0.359
Outside Diameter:
0.703
Product Color:
Silver
Product Finish:
Zinc Plated
Product Material:
Steel
Product Type:
Washer
Thickness:
0.08
Department:
Electrical
Product Subgroup:
Hex Bolts & Nuts
Product Group:
Hangers, Supports & Fasteners

Minerallac 40330J – Frequently Asked Questions

1) Is a zinc plated steel washer okay outdoors or in a damp mechanical room?
Zinc plated steel gives moderate corrosion resistance, which is fine for interior work, mechanical rooms, panel and enclosure assembly, and dry concealed spaces. For direct weather exposure, wet locations, or coastal and chemical environments, step up to hot dip galvanized or stainless. The plating on these is a thin sacrificial coating, not a barrier coating.
2) Can I use these washers with strut, channel nuts, and electrical hanger hardware?
Yes, that is the intended lane. These are electrical support fasteners, sized for 5/16 bolts and rod which is the common size for conduit hangers, enclosure mounting, and strut assemblies. They work as the bearing washer between a nut and the channel, bracket, or panel flange.
3) How are Minerallac 40330J washers packaged for stocking on a service truck?
Model 40330J ships as a 100 piece jar, which is a practical count for a van stock or a shop bin. The jar keeps them contained better than a poly bag when it is rolling around in a gang box.
How fast can I get the Minerallac 40330J 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 Minerallac 40330J come with a warranty?
Absolutely. The Minerallac 40330J 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 Minerallac 40330J?
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 Minerallac 40330J from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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