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Minerallac Company 40540J - This is a split lock washer in a medium size, sold in a jar. It is made of steel with a zinc plated finish and silver color. The washer has a thickness of 0.125", an outside diameter of 0.869", and an inside diameter of 0.512". Rockwell hardness is C38 - 43.
Minerallac Company

40540J

Alternate Item Number: 12112403

UPC: 085937080547

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Minimum Qty: 100

Multiplier: 100

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Overview

The Minerallac Company 40540J is a 1/2" medium split lock washer, zinc plated, supplied in a jar. This fastener is designed to prevent loosening or turning in applications prone to vibration. Manufactured in the USA, this lock washer is constructed from durable zinc, providing reliable performance and corrosion resistance for general industrial use. Each jar contains 100 units, with 600 units per master carton. The split design creates tension against the bolt and the mating surface, effectively resisting vibrational loosening. This makes the 40540J an ideal choice for machinery, automotive assemblies, and any construction where secure fastening is critical. Its 1/2" size is compatible with standard 1/2" bolts and screws. The zinc plating offers enhanced corrosion resistance. The medium split design provides optimal tension for vibration resistance. This product is part of the Minerallac Company's extensive line of fasteners. SKU: 40540J. UNSPSC Code: 31161800.
  • 1/2" Medium Split Lock Washer
  • Zinc Plated for corrosion resistance
  • Designed to prevent loosening under vibration
  • Durable zinc construction
  • Jar packaging: 100 units per jar

Specifications

Application
creating more uniform torque control and load distribution.;Provides a hardened bearing surface
Color
Silver
Finish
Zinc Plated
Inside Diameter
0.512 in
Inside Diameter
13.0048 mm
Material
Zinc
Material
Steel
Outside Diameter
0.869 in
Outside Diameter
22.0726 mm
Rockwell Hardness
C38 - 43
Size
1/2"
Special Features
Applies greater bolt tension per unit of applied torque. Resists loosening caused by vibration and corrosion.
Thickness
0.125 in
Thickness
3.175 mm
Type
Split Lock Washer
Package Weight (Imperial)
1.42 lbs
A 5/16 in. split lock washer. It is made of steel with a zinc plated finish and silver color. The washer has a thickness of 0.078 in., an outside diameter of 0.583 in., and an inside diameter of 0.322 in. It has Rockwell hardness C38 - 43.

40530USJ

A 5/16 in. split lock washer. It is made of steel with a zinc plated finish and silver color. The washer has a thickness of 0.078 in., an outside diameter of 0.583 in., and an inside diameter of 0.322 in. It has Rockwell hardness C38 - 43.
Metric Lock Washer, Steel, Zinc finish, Fits M4 bolt sizes, 100 per pack

JMLW04

Metric Lock Washer, Steel, Zinc finish, Fits M4 bolt sizes, 100 per pack
This is a #8 split lock washer in medium size, supplied in a jar. It is made of steel with a zinc plated finish and silver color. The washer is intended to apply greater bolt tension per unit of applied torque, resist loosening caused by vibration and corrosion, and provide a hardened bearing surface for more uniform torque control and load distribution.

40510J

This is a #8 split lock washer in medium size, supplied in a jar. It is made of steel with a zinc plated finish and silver color. The washer is intended to apply greater bolt tension per unit of applied torque, resist loosening caused by vibration and corrosion, and provide a hardened bearing surface for more uniform torque control and load distribution.
This is a 5/16 inch split lock washer sold in a jar. It is made of steel with a zinc plated finish and silver color. The washer has an outside diameter of 0.583 inch, an inside diameter of 0.322 inch, and a thickness of 0.078 inch.

40530J

This is a 5/16 inch split lock washer sold in a jar. It is made of steel with a zinc plated finish and silver color. The washer has an outside diameter of 0.583 inch, an inside diameter of 0.322 inch, and a thickness of 0.078 inch.
This is a split lock washer. It is made of steel with a zinc plated finish and silver color. The washer has a thickness of 0.094", an outside diameter of 0.680", and an inside diameter of 0.385". It is described as medium and is intended to resist loosening caused by vibration and corrosion while providing a hardened bearing surface for more uniform torque control and load distribution.

40535J

This is a split lock washer. It is made of steel with a zinc plated finish and silver color. The washer has a thickness of 0.094", an outside diameter of 0.680", and an inside diameter of 0.385". It is described as medium and is intended to resist loosening caused by vibration and corrosion while providing a hardened bearing surface for more uniform torque control and load distribution.
A coiled, hardened, split circular washer with a slightly trapezoidal wire section. It is made of steel with a zinc plated finish. The washer has a thickness of 0.056 in, an outside diameter of 0.377 in, and an inside diameter of 0.227 in.

40517

A coiled, hardened, split circular washer with a slightly trapezoidal wire section. It is made of steel with a zinc plated finish. The washer has a thickness of 0.056 in, an outside diameter of 0.377 in, and an inside diameter of 0.227 in.
A coiled, hardened split circular lock washer with a slightly trapezoidal wire section. It is made of steel with a zinc plated finish. Key dimensions are 0.094 in thickness, 0.680 in outside diameter, and 0.385 in inside diameter.

40535

A coiled, hardened split circular lock washer with a slightly trapezoidal wire section. It is made of steel with a zinc plated finish. Key dimensions are 0.094 in thickness, 0.680 in outside diameter, and 0.385 in inside diameter.
A coiled, hardened split circular washer with a slightly trapezoidal wire section. It is made of steel with a zinc plated finish. The washer has a thickness of 0.125 in, an outside diameter of 0.869 in, and an inside diameter of 0.512 in.

40540

A coiled, hardened split circular washer with a slightly trapezoidal wire section. It is made of steel with a zinc plated finish. The washer has a thickness of 0.125 in, an outside diameter of 0.869 in, and an inside diameter of 0.512 in.

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.