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Minerallac Company 40545USJ - A split lock washer for use where greater bolt tension per unit of applied torque is needed. It is made of steel with a zinc plated finish and a silver color. The washer has a thickness of 0.156", an outside diameter of 1.073", and an inside diameter of 0.641".
Minerallac Company

40545USJ

Alternate Item Number: 14917238

UPC: 085937058393


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Minimum Qty: 100

Multiplier: 100

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Overview

The Minerallac Company 40545USJ 5/8" Medium Split Lock Washer is a zinc-plated steel fastener designed to prevent loosening under vibration and dynamic loads. This medium-duty split washer provides a spring action that maintains tension on bolted joints, critical in industrial, construction, and mechanical applications where joint integrity is essential. The 5/8" nominal size ensures compatibility with standard bolts and screws in the 5/8" diameter range, making it a versatile choice for general-purpose fastening in HVAC, electrical, plumbing, and structural assemblies. Zinc plating offers basic corrosion resistance for indoor and sheltered outdoor environments, aligning with common industry standards for medium-duty hardware. Unlike flat washers, the split design creates a spring effect that compensates for thermal expansion, vibration, and material relaxation, reducing the risk of joint failure. This washer is ideal for use with bolts, screws, and threaded fasteners requiring a medium locking force. The Minerallac Company, a trusted name in electrical and mechanical hardware, produces this washer to consistent dimensional tolerances for reliable performance in standard applications.
  • Size: 5/8" nominal diameter
  • Type: Medium split lock washer
  • Material: Zinc-plated steel for corrosion resistance
  • Function: Prevents loosening from vibration and dynamic loads
  • Compatibility: Standard bolts and screws in 5/8" diameter range

Specifications

Application
creating more uniform torque control and load distribution.;Provides a hardened bearing surface
Color
Silver
Finish
Zinc Plated
Inside Diameter
0.641 in
Inside Diameter
16.2814 mm
Material
Steel
Outside Diameter
1.073 in
Outside Diameter
27.2542 mm
Rockwell Hardness
C38 - 43
Special Features
Applies greater bolt tension per unit of applied torque. Resists loosening caused by vibration and corrosion.
Thickness
0.156 in
Thickness
3.9624 mm
Type
Split Lock Washer
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 0.156", an outside diameter of 1.073", and an inside diameter of 0.641". It is described as medium and is intended to resist loosening from vibration while providing a hardened bearing surface for more uniform torque control and load distribution.

40545

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 0.156", an outside diameter of 1.073", and an inside diameter of 0.641". It is described as medium and is intended to resist loosening from vibration while providing a hardened bearing surface for more uniform torque control and load distribution.
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
A 7/8 inch split lock washer in medium style. It is zinc plated. The sheet identifies it as a jar-packaged product.

40552J

A 7/8 inch split lock washer in medium style. It is zinc plated. The sheet identifies it as a jar-packaged product.
Type SW - Silicon Bronze Split Lock Washer - Diameter 3/8 inches

37030SW-C

Type SW - Silicon Bronze Split Lock Washer - Diameter 3/8 inches
Type SW - Silicon Bronze Split Lock Washer - Diameter 1/2 inches

50030SW-C

Type SW - Silicon Bronze Split Lock Washer - Diameter 1/2 inches
Type SW - Silicon Bronze Split Lock Washer - Diameter 5/16 Inch

31030SW-C

Type SW - Silicon Bronze Split Lock Washer - Diameter 5/16 Inch
A 3/4 in split lock washer in medium style. It is made of steel with a zinc plated finish and a silver color. The washer is designed 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.

40550USJ

A 3/4 in split lock washer in medium style. It is made of steel with a zinc plated finish and a silver color. The washer is designed 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.
A 7/16 inch split lock washer made of steel with a zinc plated finish. It is designed to apply greater bolt tension per unit of applied torque and resist loosening caused by vibration and corrosion. The washer provides a hardened bearing surface for more uniform torque control and load distribution.

40537USJ

A 7/16 inch split lock washer made of steel with a zinc plated finish. It is designed to apply greater bolt tension per unit of applied torque and resist loosening caused by vibration and corrosion. The washer provides a hardened bearing surface for more uniform torque control and load distribution.

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.