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Minerallac Company 40615 - A hardened circular washer with twisted prongs or teeth extending inward from the inside edge of the washer. It is made of steel with a zinc plated finish. The fastener size is #10.
Minerallac Company

40615

Alternate Item Number: 12113989

UPC: 085937406156


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Minimum Qty: 100

Multiplier: 100

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Overview

Minerallac Company SKU 40615 is a #10 internal tooth lock washer designed for secure, vibration-resistant fastening in industrial applications. Constructed from hardened steel and finished with a zinc plating, this washer provides corrosion resistance and mechanical locking to prevent fastener loosening under dynamic loads. The internal teeth are twisted and extend inward from the washer's edge, biting into both the fastener head and mating surface to create a positive lock. This design is ideal for high-vibration environments such as electrical control panels, switchgear, machinery assemblies, and HVAC systems. The #10 size corresponds to a major diameter of approximately 0.190 inches, ensuring compatibility with standard #10 fasteners. Supplied in a 100-piece jar for efficient inventory management, SKU 40615 is part of Minerallac's comprehensive line of toothed lock washers, which includes external tooth variants. The zinc-plated finish meets standard corrosion resistance requirements for indoor and protected outdoor applications. This washer is not intended for structural load-bearing applications but excels in securing electrical and mechanical components where vibration and shock are present. The internal tooth design ensures a secure grip on the mating surface, reducing the risk of loosening due to vibration or thermal cycling. The hardened steel construction provides durability and resistance to deformation, while the zinc plating offers protection against corrosion in harsh environments. The 100-piece jar format simplifies inventory management and reduces downtime in assembly operations.
  • Material: Zinc-plated hardened steel for corrosion resistance
  • Size: #10 (major diameter ~0.190 inches)
  • Internal twisted teeth for positive locking against vibration
  • 100-piece jar for efficient inventory management
  • Compatible with standard #10 fasteners in industrial assemblies
  • Precisely sized for #10 screws (0.190" major diameter)
  • Each jar contains 100 pieces for efficient inventory management
  • Country of Origin: US

Specifications

Fastener Size
#10
Finish
Zinc Plated
Material
Steel
Material
Hardened Steel
Material
Zinc-Plated Steel
Material
Hardened Steel with Zinc Plated Finish
Material
Zinc-plated hardened steel
Material
Hardened steel with zinc electroplated finish
Series
Minerallac’s toothed lock washer series
Size
#10
Size
3/16"
Size
#10 (3/16")
Size
#10, 3/16"
Type
Internal Locking Washer
Package Weight (Imperial)
0.05 lbs
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A hardened circular washer with twisted prongs or teeth extending inward from the inside edge. It is made of steel with a zinc plated finish. The washer is sized for #6 fasteners and is an internal locking washer.

40605

A hardened circular washer with twisted prongs or teeth extending inward from the inside edge. It is made of steel with a zinc plated finish. The washer is sized for #6 fasteners and is an internal locking washer.
A hardened circular washer with twisted prongs or teeth extending inward from the inside edge. It is a 5/16 in internal locking washer made of steel with a zinc plated finish. It is used as a tooth lock washer.

40625

A hardened circular washer with twisted prongs or teeth extending inward from the inside edge. It is a 5/16 in internal locking washer made of steel with a zinc plated finish. It is used as a tooth lock washer.
This is a #10 external tooth lock washer. It is made of 18-8 stainless steel. The sheet identifies it as a jar package. External tooth lock washers are used where locking efficiency and torsional resistance are needed.

70916J

This is a #10 external tooth lock washer. It is made of 18-8 stainless steel. The sheet identifies it as a jar package. External tooth lock washers are used where locking efficiency and torsional resistance are needed.
This is a 1/2" external tooth lock washer. It is made of 18-8 stainless steel. The external teeth are on the largest radius to provide greater locking efficiency and torsional resistance.

70941J

This is a 1/2" external tooth lock washer. It is made of 18-8 stainless steel. The external teeth are on the largest radius to provide greater locking efficiency and torsional resistance.
A hardened circular washer with twisted prongs or teeth that extend inward from the inside edge of the washer. It is made of steel with a zinc plated finish. The fastener size is #8.

40610

A hardened circular washer with twisted prongs or teeth that extend inward from the inside edge of the washer. It is made of steel with a zinc plated finish. The fastener size is #8.
A hardened circular internal locking washer with twisted prongs or teeth extending inward from the inside edge. It is made of steel with a zinc plated finish. The fastener size is 1/4 in.

40620

A hardened circular internal locking washer with twisted prongs or teeth extending inward from the inside edge. It is made of steel with a zinc plated finish. The fastener size is 1/4 in.

Frequently Asked Questions

What material is the lock washer made from?

The lock washer is constructed from zinc-plated steel.

How many pieces are included in the jar?

The jar contains 100 pieces of the lock washer.

Where is this lock washer manufactured?

This lock washer is manufactured in the USA.

What size screws does this lock washer fit?

This lock washer is designed for #10 size screws.

What is the UNSPSC code for this product?

The UNSPSC code for this lock washer is 31161822.

Is this lock washer suitable for outdoor applications?

Yes, the zinc plating provides corrosion resistance for outdoor use.

Frequently Asked Questions about Minerallac Company

What are the main product lines offered by Minerallac Company?

Minerallac Company offers multiple comprehensive product lines including Minerallac Traditional (electrical fasteners), Strut Fittings, Stainless Steel Fasteners, Black Claw, Impact Staples, and Redmore. Their Traditional line features over a thousand electrical fastener variations covering conduit/cable/wire products, nail straps, beam clamps, metal stud & drywall accessories, acoustical supports, voice/data hardware, and miscellaneous electrical installation components.

What is Minerallac Company's warranty policy?

Minerallac Company provides a limited warranty that guarantees all products are free from defects in material and workmanship. If a product fails to meet this warranty, Minerallac's sole liability is to replace the product at no charge. The warranty is exclusive and does not cover consequential damages, lost profits, or implied warranties of merchantability or fitness for a particular purpose.

What industries and applications are Minerallac Company products used for?

Minerallac Company products are used extensively across electrical, construction, and industrial applications, including conduit and cable support, beam mounting, metal stud and drywall installation, voice/data infrastructure, and low voltage systems. Their product lines cover critical fastening solutions for electrical contractors, with specialized offerings in conduit hangers, straps, beam clamps, cable supports, and mounting hardware for various industrial environments.

What technical support does Minerallac Company offer?

Minerallac Company offers comprehensive technical support through multiple channels, including a toll-free customer service line at 800-927-3293, email support at [email protected], and online resources at www.minerallac.com. Their support covers product selection, technical specifications, and customer service for their extensive line of electrical fasteners, hangers, straps, and hardware across multiple product brands including Minerallac Traditional, Cully, Black Claw, IMPACT Staples, and Minerallac Stainless Steel. Support hours are 8:00 A.M. to 5:00 P.M. CT for their corporate office and 8:00 A.M. to 5:00 P.M. PT for their regional office.

What are the key features of Minerallac Company products?

Minerallac Company products feature a comprehensive range of electrical fasteners and hardware with exceptional versatility, including over 1,000 different sizes, styles, and finishes. Key features include multiple product lines such as Traditional, Strut Fittings, and Stainless Steel options with specialized finishes like 304/316 Stainless Steel, Hot-Dipped Galvanized, and Zinc Electroplate. Their products are engineered for electrical contractors, offering time-saving solutions with high-quality fasteners designed for durability, corrosion resistance, and worker safety across various installation environments.

What environmental ratings do Minerallac Company products have?

Minerallac Company products have robust environmental ratings, including UL 508A Type 1, 2, 3, 4, 4X, 12, and 13 certifications, CSA Type 1-4X, 12, and 13 ratings, and IEC 60529 IP66 protection. The products are WEEE and RoHS compliant, with UV and oil resistance, and can operate in extreme temperatures ranging from -55°C to 105°C, making them suitable for harsh industrial environments.

What accessories are available for Minerallac Company products?

Minerallac Company offers a comprehensive range of accessories across multiple product categories, including hardware, fasteners, and mounting solutions. Key accessories include stove bolts with nuts, wing nut washers, bar joist washers, stud clip adapters, brackets, perforated strapping, cable support options like J-hooks and bridle rings, box mounting brackets, outlet retainers, and various stud and drywall supports. Their accessories are available in multiple finishes such as stainless steel, hot-dipped galvanized, zinc electroplate, and powder-coated options.

How are Minerallac Company products typically installed?

Minerallac Company products are typically installed using a variety of specialized fastening solutions, including conduit hangers, straps, beam clamps, and mounting brackets designed for different electrical and construction applications. Installation methods vary by product type, with options for metal studs, drywall, beams, acoustical surfaces, and low voltage systems. The company offers multiple installation styles such as one-hole and two-hole straps, universal beam clamps, and specific mounting hardware to ensure secure and efficient attachment across diverse electrical and construction environments.

What communication protocols do Minerallac Company products support?

Minerallac Company's Brad product line supports multiple industrial communication protocols, including Ethernet, DeviceNet, PROFIBUS, Modbus, CANopen, Serial, AS-interface, and CC-Link. Their comprehensive portfolio covers over 40 industrial protocols, providing flexible communication solutions for various industrial automation applications from PC-based control to PLC systems.