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Minerallac Company 40540BFG - A split lock washer for use where increased bolt tension and resistance to loosening are needed. 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".
Minerallac Company

40540BFG

Alternate Item Number: 13852939

UPC: 085937027313

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Specification SheetManufacturer Product Website

Contact for Pricing

Minimum Qty: 2000

Multiplier: 2000

*Contact for lower quantities*

Overview

The Minerallac 40540BFG is a 1/2" medium split lockwasher constructed from durable zinc-plated steel. Designed by Minerallac Company, a reputable manufacturer of electrical and mechanical hardware, this lockwasher is engineered to prevent fasteners from loosening under vibration and shock. Its medium split design ensures balanced tension distribution, making it ideal for securing 1/2" bolts, screws, and other threaded components in demanding industrial settings. This lockwasher is commonly specified for applications such as electrical panel assembly, mounting machinery, and creating robust structural connections where reliable thread locking is essential. The zinc plating provides a foundational level of corrosion resistance, suitable for indoor use and protected outdoor environments. As part of Minerallac’s standard hardware line, the 40540BFG meets general industrial specifications for medium-duty fastening requirements. Its material composition and design contribute to the overall integrity and longevity of assembled components by maintaining proper torque and preventing unintended disassembly. The SKU 40540BFG signifies a trusted component for maintaining secure connections in various mechanical and electrical infrastructure projects.
  • 1/2" Medium Split Lockwasher
  • Zinc Plated Steel construction
  • Prevents loosening from vibration
  • Ideal for 1/2" fasteners
  • Minerallac Company SKU: 40540BFG

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
Steel
Outside Diameter
0.869 in
Outside Diameter
22.0726 mm
Rockwell Hardness
C38 - 43
Special Features
Applies greater bolt tension per unit of applied torque. Resists loosening caused by vibration and corrosion.
Thickness
0.125 in
Thickness
3.175 mm
Type
Split Lock Washer
Package Weight (Imperial)
45.5 lbs
A split lock washer for use where greater bolt tension and resistance to loosening from vibration are needed. It is made of steel with a zinc plated finish and a silver color. The washer has a thickness of 0.125", an outside diameter of 0.869", and an inside diameter of 0.512".

40540USJ

A split lock washer for use where greater bolt tension and resistance to loosening from vibration are needed. It is made of steel with a zinc plated finish and a silver color. The washer has a thickness of 0.125", an outside diameter of 0.869", and an inside diameter of 0.512".
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. It is zinc plated and supplied in a box. The sheet identifies it as catalog number 40510-1000.

40510-1000

This is a #8 split lock washer in medium size. It is zinc plated and supplied in a box. The sheet identifies it as catalog number 40510-1000.
A split lock washer for use where greater bolt tension and resistance to loosening from vibration are needed. It is made of steel with a zinc plated finish and a silver color. The washer has a thickness of 0.094", an outside diameter of 0.680", and an inside diameter of 0.385".

40535USJ

A split lock washer for use where greater bolt tension and resistance to loosening from vibration are needed. It is made of steel with a zinc plated finish and a silver color. The washer has a thickness of 0.094", an outside diameter of 0.680", and an inside diameter of 0.385".
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".

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".
This is a split lock washer made of steel with a zinc plated finish. It has an inside diameter of 0.114 in, an outside diameter of 0.209 in, and a thickness of 0.025 in. The washer is silver and has a Rockwell hardness of C38 - 43.

40501

This is a split lock washer made of steel with a zinc plated finish. It has an inside diameter of 0.114 in, an outside diameter of 0.209 in, and a thickness of 0.025 in. The washer is silver and has a Rockwell hardness of C38 - 43.
This is a split lock washer with a medium profile, sized for 5/16-inch use. It is made of steel with a zinc plated finish and silver color. The washer is designed to apply greater bolt tension, resist loosening from vibration and corrosion, and provide a hardened bearing surface for more uniform torque control and load distribution.

40530BFG

This is a split lock washer with a medium profile, sized for 5/16-inch use. It is made of steel with a zinc plated finish and silver color. The washer is designed to apply greater bolt tension, resist loosening from vibration and corrosion, and provide a hardened bearing surface for more uniform torque control and load distribution.
A split lock washer for use where greater bolt tension and resistance to loosening from vibration are needed. It is made of steel with a zinc plated finish and has a silver color. The washer has a thickness of 0.125", an outside diameter of 0.869", and an inside diameter of 0.512".

40540-1000

A split lock washer for use where greater bolt tension and resistance to loosening from vibration are needed. It is made of steel with a zinc plated finish and has a silver color. The washer has a thickness of 0.125", an outside diameter of 0.869", and an inside diameter of 0.512".

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.