Minerallac 3/8" Split Lock Was...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$128.57
Minerallac 3/8" Split Lock Washers - Medium Split, Zinc Plated Steel

Minerallac 3/8" Split Lock Washers - Medium Split, Zinc Plated Steel

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Model: 40535-1000

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

$128.57
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Minerallac 3/8" Split Lock Washers - Medium Split, Zinc Plated Steel, Jar Pack

Professional Fastening Solutions for Secure Connections

Minerallac 3/8" Split Lock Washers deliver reliable fastening performance with zinc plated steel construction and medium split design. These professional-grade lock washers provide hardened bearing surfaces for uniform torque control and load distribution, making them essential components for secure mechanical connections that resist loosening from vibration and corrosion.

Professional Features & Benefits

  • 3/8" Size Specification: Precise 0.385" inside diameter and 0.68" outside diameter ensures proper fit and optimal performance in standard applications.
  • Zinc Plated Finish: Corrosion-resistant coating extends service life and maintains appearance in demanding environments.
  • Medium Split Design: Engineered split configuration applies greater bolt tension per unit of applied torque for superior holding power.
  • Hardened Steel Construction: C38-43 Rockwell hardness rating provides durable bearing surface that withstands repeated use and high-stress applications.
  • 0.094" Thickness: Optimal thickness specification delivers proper spring tension and load distribution characteristics.
  • Vibration Resistance: Split lock design effectively resists loosening caused by vibration and operational stresses.

Technical Specifications

  • Country Of Origin: China
  • Inside Diameter: 0.385
  • Outside Diameter: 0.68
  • Product Color: Silver
  • Product Finish: Zinc Plated
  • Product Material: Steel
  • Product Type: Split Lock Washer
  • Rockwell Hardness: C38 - 43
  • Thickness: 0.094

Professional Applications

  • Electrical Panel Assembly and Maintenance
  • Industrial Equipment Installation
  • Commercial Building Systems
  • Mechanical Fastening Applications
  • Equipment Mounting and Securing
  • Maintenance and Repair Operations

Why Choose Minerallac Quality?

Minerallac split lock washers combine precision manufacturing with zinc plated corrosion protection and hardened steel durability. The medium split design and C38-43 Rockwell hardness rating ensure consistent performance in professional applications where secure fastening and vibration resistance are critical requirements.

Manufacturer Resources

Product Specs

Product Type:
Split Lock Washer
Outside Diameter:
0.68
Thickness:
0.094
Product Finish:
Zinc Plated
Product Material:
Steel
Country Of Origin:
China
Product Color:
Silver
Rockwell Hardness:
C38 - 43
Inside Diameter:
0.385
Department:
Electrical

Minerallac 40535-1000 – Frequently Asked Questions

1) Will a Minerallac 3/8 inch split lock washer fit a standard 3/8-16 bolt or threaded rod?
Yes. The Minerallac 3/8 inch split lock washer has a 0.385 inch inside diameter, which clears the 0.375 inch nominal major diameter of a 3/8 inch bolt or all-thread with just enough slip to seat. Outside diameter is 0.68 inch, so it sits under a standard 3/8 hex nut or bolt head without overhanging the bearing surface.
2) What is the difference between the bulk pack and jar pack of the Minerallac 3/8 split lock washer?
Same washer, two ways to buy it. Part 40535-1000 is the bulk pack and 40535J is the jar pack. The jar is the one service techs keep on the truck or on a shelf in the shop; bulk is what you order when you are assembling panels or hanging strut in quantity.
3) Can I use zinc plated steel split lock washers outdoors or in a damp mechanical room?
Zinc plated steel handles indoor damp and general commercial exposure, and that is what these are. The zinc is a sacrificial coating on a steel base, so for direct weather, wash-down, coastal, or corrosive process areas you want stainless or hot dip galvanized hardware instead. For panel assembly, equipment mounting, and interior MRO work, zinc plated is the normal spec.
4) Is a medium split lock washer the same as a regular helical spring lock washer?
Medium split is the standard, everyday helical spring lock washer, and that is the section used here at 0.094 inch thick. It is the general purpose choice for 3/8 bolted connections. Heavy or extra duty sections use a thicker, taller coil for high clamp loads; if your drawing calls out a heavy section washer, the medium will not meet it.
5) Will a 3/8 split lock washer stack under a flat washer on strut channel?
Yes, and that is the usual order: flat washer against the channel, split lock washer on top of it, then the nut. Putting the lock washer directly against a soft or slotted surface lets the split ends dig in and chew the material. The washer adds 0.094 inch of stack height when relaxed, so allow for it if your thread engagement is tight.
6) Are these Minerallac lock washers suitable for grounding and bonding connections in an electrical panel?
They are steel with a zinc plated finish, built as a mechanical locking element, not a bonding device. Use them to keep panel and equipment hardware tight; for a listed bonding connection, use the grounding lug, bonding bushing, or bonding washer specified for that purpose. Panel assembly and equipment mounting are exactly where these belong.
7) Where are Minerallac 3/8 split lock washers made?
Country of origin is China. If you are on a federal, transit, or other domestic-preference job that requires domestically produced fasteners, check that requirement before you commit these to the submittal.
How fast can I get the Minerallac 40535-1000 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 40535-1000 come with a warranty?
Absolutely. The Minerallac 40535-1000 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 40535-1000?
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 40535-1000 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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