Minerallac 1/2" Split Lock Was...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$148.57
Minerallac 1/2" Split Lock Washers Silicon Bronze Medium Split Professional Hardware, 100 Pack

Minerallac 1/2" Split Lock Washers Silicon Bronze Medium Split Professional Hardware, 100 Pack

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Model: 42535J

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

$148.57
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Minerallac 3/8" Split Lock Washers - Silicon Bronze Medium Split with Hardened Surface

Professional Fastening Solutions with Superior Vibration Resistance

Minerallac 3/8" Split Lock Washers deliver professional-grade fastening performance with silicon bronze construction and medium split design. These hardened washers provide uniform torque control and load distribution while resisting loosening caused by vibration and corrosion, making them ideal for demanding applications requiring reliable connection integrity.

Professional Features & Benefits

  • 3/8" Size Specification: Precise 0.385" inside diameter and 0.68" outside diameter ensures proper fit and optimal load distribution for standard fastener applications.
  • Silicon Bronze Construction: Corrosion-resistant material provides long-lasting performance in challenging environments while maintaining electrical conductivity.
  • Medium Split Design: Engineered split configuration applies greater bolt tension per unit of applied torque for superior holding power and connection reliability.
  • Hardened Surface Treatment: C38-43 Rockwell hardness rating creates durable bearing surface that withstands repeated installation cycles and maintains performance.
  • Vibration Resistance: Split lock design actively resists loosening caused by vibration, thermal cycling, and mechanical stress for long-term connection integrity.
  • 0.094" Thickness: Optimized thickness provides proper spring tension and load distribution without excessive bulk in assembly applications.

Technical Specifications

  • Country Of Origin: Italy
  • Inside Diameter: 0.385
  • Outside Diameter: 0.68
  • Product Color: Bronze
  • Product Material: Silicon
  • Product Type: Split Lock Washer
  • Rockwell Hardness: C38 - 43
  • Thickness: 0.094

Professional Applications

  • Electrical Panel and Enclosure Assembly
  • Industrial Equipment Fastening
  • Commercial Building Systems
  • Marine and Corrosive Environment Applications
  • HVAC Equipment Installation
  • Telecommunications Infrastructure
  • Professional Maintenance and Repair

Why Choose Minerallac Quality?

Minerallac split lock washers combine precision Italian manufacturing with silicon bronze durability and professional-grade hardness ratings. The hardened bearing surface and corrosion-resistant construction ensure reliable performance in demanding applications where connection integrity is critical.

Manufacturer Resources

Product Specs

Department:
Electrical
Rockwell Hardness:
C38 - 43
Product Type:
Washer
Product Color:
Bronze
Product Material:
Silicon
Product Subgroup:
Electrical Fasteners
Product Group:
Hangers, Supports & Fasteners

Minerallac 42535J – Frequently Asked Questions

1) What sizes do the Minerallac split lock washers come in?
Two bolt sizes: 3/8 inch (part 42535J) and 1/2 inch (part 42540J). Both are silicon bronze medium split lock washers sold by the 100 pack. Order by bolt diameter, not by washer OD.
2) Will a 3/8 inch Minerallac split lock washer clear a 3/8-16 bolt without binding?
Yes. The 3/8 inch washer has a 0.385 inch inside diameter, slightly over the 0.375 inch nominal bolt diameter, so it slips over a 3/8 inch bolt or stud. Outside diameter is 0.68 inch and thickness is 0.094 inch, so it seats under a standard 3/8 hex nut without overhanging the nut face.
3) Are bronze lock washers OK to use with copper or bronze grounding hardware?
That is the main reason to pick them. Silicon bronze is a conductive, corrosion resistant material, so it pairs with copper and bronze bonding hardware without the galvanic mismatch you get from mixing zinc plated steel against copper. Minerallac lists them for electrical panel and enclosure assembly and for marine and other corrosive environments.
4) Do these lock washers hold up on equipment that vibrates?
That is what the medium split profile is for. The split applies greater bolt tension per unit of applied torque, and the spring action resists loosening from vibration and thermal cycling. Minerallac lists them for industrial equipment fastening, HVAC equipment installation and telecom infrastructure.
5) Should I use a split lock washer or a flat washer under the nut?
Different jobs. A flat washer spreads the load over a larger bearing area and protects soft sheet metal; it does nothing to stop a nut backing off. The split lock washer is a spring, so it keeps tension on the joint under vibration. On thin enclosure sheet metal, use both: flat washer against the metal, split lock washer under the nut.
6) Where are Minerallac silicon bronze lock washers made?
Italy. That matters on jobs with country of origin reporting requirements, so note it before submitting submittals on public work.
How fast can I get the Minerallac 42535J 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 42535J come with a warranty?
Absolutely. The Minerallac 42535J 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 42535J?
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 42535J from ZenSupply?
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