
Contact for Pricing
Minimum Qty: 100
Multiplier: 100
*Contact for lower quantities*
Overview
- 3/4" medium split lock washer size
- Hot dipped galvanized steel for corrosion resistance
- Jar quantity: 100 pieces per jar
- Master carton: 600 pieces
- UL/CSA listed for industrial applications
- Prevents bolt loosening from vibration
- Compatible with NEMA-rated enclosures
Specifications
Application | creating more uniform torque control and load distribution.;Provides a hardened bearing surface |
Color | Silver |
Finish | Hot Dip Galvanized |
Finish | Hot-dip galvanized |
Fits Bolt Sizes | 3/4 IN |
Inside Diameter | 0.78 in |
Inside Diameter | 19.812 mm |
Material | Steel |
Outside Diameter | 1.265 in |
Outside Diameter | 32.131 mm |
Rockwell Hardness | C38 - 43 |
Special Features | Applies greater bolt tension per unit of applied torque. Resists loosening caused by vibration and corrosion. |
Thickness | 0.188 in |
Thickness | 4.7752 mm |
Type | Split Lock Washer |

42545
A 5/8 inch split lock washer made of silicon bronze. It is bronze in color and has an outside diameter of 1.073 in, an inside diameter of 0.641 in, and a thickness of 0.156 in. The washer is intended to provide a hardened bearing surface, more uniform torque control, and load distribution while resisting loosening from vibration and corrosion.Frequently Asked Questions
What is the size of these lock washers?
The washers are sized for 3/4" fasteners and classified as medium split lock washers.
How many washers are in each jar?
Each jar contains 100 pieces of 40550HGJ split lock washers.
What is the master carton quantity?
The master carton contains 600 pieces of the 40550HGJ split lock washers.
What material are these washers made from?
These washers are made from hot dipped galvanized steel, providing corrosion resistance in harsh environments.
What is the purpose of a split lock washer?
Split lock washers prevent loosening of bolts and fasteners caused by vibration or dynamic loads.
Are these washers UL listed?
Yes, these washers are UL/CSA listed for industrial applications.
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.

