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Minerallac 1/4" Split Lock Washers - Medium Split, Zinc Plated Steel, Jar Pack, 100 Pack
Model: MIN-40525J
Minerallac 1/4" Split Lock Washers - Medium Split, Zinc Plated Steel, Jar PackProfessional Fastening Solutions for Secure ConnectionsMinerallac 1/4" Split Lock Washers deliver reliable fastening...
Minerallac
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Minerallac #6 Split Lock Washers Medium Split Zinc Plated Steel Hardware
Professional vibration-resistant fastening solution with zinc plated finish
Minerallac #6 Split Lock Washers deliver reliable fastening performance with medium split design and zinc plated steel construction. These professional-grade lock washers resist loosening caused by vibration and corrosion while providing superior bolt tension per unit of applied torque. The hardened bearing surface creates uniform torque control and load distribution for dependable connections in demanding applications.
Professional Features & Benefits
- Medium Split Design: Optimized spring action provides consistent tension and prevents fastener loosening under vibration
- Zinc Plated Finish: Corrosion-resistant coating extends service life and maintains appearance in various environments
- Steel Construction: Durable material with C38-43 Rockwell hardness ensures long-lasting performance and reliability
- 0.148" Inside Diameter: Precisely sized for #6 fasteners ensuring proper fit and optimal load distribution
- 0.031" Thickness: Engineered thickness provides appropriate spring tension without compromising joint integrity
- Hardened Bearing Surface: Creates uniform torque control and improved load distribution across the fastened joint
Technical Specifications
- Country Of Origin: Taiwan
- Inside Diameter: 0.148
- Outside Diameter: 0.25
- Product Color: Silver
- Product Finish: Zinc Plated
- Product Material: Steel
- Product Type: Split Lock Washer
- Rockwell Hardness: C38 - 43
- Thickness: 0.031
Professional Applications
- Electrical panel and enclosure assembly
- HVAC equipment installation and maintenance
- Industrial machinery and equipment fastening
- Commercial building construction and renovation
- Automotive and transportation applications
- Marine and outdoor equipment assembly
- General maintenance and repair operations
Why Choose Minerallac Quality?
Minerallac split lock washers combine precision engineering with reliable zinc plated steel construction to deliver consistent fastening performance. The C38-43 Rockwell hardness rating ensures durability while the corrosion-resistant finish provides long-term reliability in diverse operating environments.
Manufacturer Resources
Product Specs
- Inside Diameter:
- 0.148
- Outside Diameter:
- 0.25
- Product Color:
- Silver
- Product Finish:
- Zinc Plated
- Product Material:
- Steel
- Product Type:
- Washer
- Rockwell Hardness:
- C38 - 43
- Thickness:
- 0.031
- Department:
- Electrical
- Product Subgroup:
- Electrical Fasteners
- Product Group:
- Hangers, Supports & Fasteners
Minerallac 40505J – Frequently Asked Questions
1) Will a Minerallac 40505J lock washer fit a #6 screw or bolt?
Yes. The 40505J split lock washer has a 0.148 inch inside diameter, which is sized to slip over a #6 machine screw or bolt shank. Outside diameter is 0.25 inch, so it sits under a standard #6 hex nut or screw head without overhanging much. If you are working with #8 or #10 hardware, you need the next sizes up, not this one.
2) Are these #6 split lock washers OK for outdoor or damp electrical enclosures?
The washers are zinc plated steel, which gives corrosion resistance for general outdoor, marine, and equipment work as well as dry interior panel assembly. Zinc plating is a sacrificial coating, so in constant salt spray or chemical wash-down it will eventually give up; stainless is the better call in those spots. For typical exterior enclosure, HVAC curb, and machinery fastening, zinc plated steel is the normal choice.
3) How much stack height does a #6 split lock washer add under the nut?
About 0.031 inch of material thickness for the Minerallac #6 medium split washer, measured flat. A split washer sits slightly open before it is torqued, so allow a bit more clearance during assembly; once the joint is pulled tight it compresses to roughly that thickness. That matters when you are threading into a shallow boss or have limited screw length left in an enclosure.
4) Split lock washer or a nylon insert lock nut for panel and equipment assembly?
A split lock washer like the Minerallac #6 works with whatever nut or screw you already have and is reusable in low-cost, high-count assembly, which is why it is standard for electrical panel and enclosure work, HVAC equipment mounting, and general MRO. A nylon insert lock nut replaces the nut outright and holds better under sustained heavy vibration but is not rated for heat and is really single use. If the joint is a screw into tapped sheet metal, you cannot use a lock nut at all, so the split washer is the only option in that case.
5) Do I still need a flat washer with a #6 split lock washer?
On soft or thin material, yes. The #6 split washer is only 0.25 inch across the outside and its ends dig in by design, so on sheet metal, plastic, or an oversized hole it can bite through or pull into the hole. Put a flat washer between the sheet and the lock washer, lock washer against the nut. On a rigid steel enclosure flange with a correctly sized hole, the lock washer alone is normal practice.
6) How many #6 lock washers come in a Minerallac 40505J pack?
Model 40505J ships as a 100 piece pack of #6 medium split zinc plated steel lock washers. That quantity suits panel build-outs and service trucks where you are consuming them a handful at a time across jobs.
7) What finish and color are the Minerallac 40505J washers, for matching existing hardware?
Silver in appearance with a zinc plated finish over steel, so they blend with the standard zinc hardware already in most panels, strut assemblies, and equipment frames. They are made in Taiwan.
How fast can I get the Minerallac 40505J 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 40505J come with a warranty?
Absolutely. The Minerallac 40505J 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 40505J?
You can call, text, or email our expert support team for fast answers. We’re here to help with
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