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Minerallac Company 42530 - A coiled, hardened, split circular washer with a slightly trapezoidal wire section. It is made of silicon and finished in bronze. Key dimensions are 0.078 in thickness, 0.583 in outside diameter, and 0.322 in inside diameter.
Minerallac Company

42530

Alternate Item Number: 12114044

UPC: 085937425300

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Minimum Qty: 100

Multiplier: 100

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Overview

The Minerallac Company SKU 42530 is a 5/16" split lock washer constructed from high-quality Silicon Bronze (Alloy 651). This material offers superior resistance to vibration and corrosion, making it suitable for marine, chemical processing, and outdoor electrical installations where standard steel fasteners may degrade. The split circular design features a slightly trapezoidal wire section that provides integrated spring action, generating increased bolt tension per unit of applied torque. This geometry effectively resists loosening caused by vibration and ensures uniform torque control and load distribution across mating surfaces. The washer provides a hardened bearing surface with a Rockwell hardness of C38-43 for consistent performance. Key specifications include a 0.078 inch thickness, 0.583 inch outside diameter, and 0.322 inch inside diameter. This product is compliant with the Buy America Act and RoHS standards. Supplied in jars of 100 units or master cartons of 1,200 units. WARNING: This product can expose you to Lead, known to the State of California to cause cancer and reproductive harm. For more information, visit www.P65Warnings.ca.gov. The coiled, hardened, split circular washer is precisely engineered with a slightly trapezoidal wire section. This unique wire profile is a critical element in its functionality, contributing to its effectiveness in demanding applications. The material composition of silicon and bronze ensures durability and resilience. The bronze finish not only contributes to its aesthetic appeal but also enhances its protective qualities against environmental factors.
  • Material: Silicon Bronze (Alloy 651)
  • Size: 5/16"
  • Thickness: 0.078"
  • Outside Diameter: 0.583"
  • Inside Diameter: 0.322"
  • Rockwell Hardness: C38 - 43
  • Resists loosening from vibration and corrosion
  • Provides uniform torque control and load distribution
  • Ideal for marine, chemical processing, and outdoor applications
  • Standard Quantity: 100 per jar, 1200 per master carton

Specifications

Application
Provides a hardened bearing surface, creating more uniform torque control and load distribution.
Color
Bronze
Inside Diameter
0.322" IN
Material
Silicon Bronze
Material
Silicon
Material
Silicon Bronze (Alloy 651)
Material
Silicon Bronze (C65100 or C65500 alloys)
Material
Silicon Bronze (C65100 or C65500)
Outside Diameter
0.583" IN
Rockwell Hardness
C38 - 43
Series
Minerallac Traditional
Series
Cully
Size
0.078" T x 0.583" OD x 0.322" ID (5/16" fastener size)
Size
5/16" Split Lock Washer, 0.583" OD, 0.322" ID, 0.078" Thickness
Size
0.078" T x 0.583" OD (for 5/16" fasteners)
Size
0.078" T x 0.583" OD (5/16")
Size
5/16" (0.322" ID, 0.583" OD, 0.078" T)
Size
5/16"
Size
[object Object]
Size
5/16 Inch
Special Features
Applies greater bolt tension per unit of applied torque. Resists loosening caused by vibration and corrosion.
Thickness
0.078" IN
Type
Split Lock Washer
Package Weight (Imperial)
0.39 lbs
A coiled, hardened, split circular lock washer with a slightly trapezoidal wire section. It is made of silicon bronze and has a bronze color. The washer measures 0.062 in thick, 0.487 in outside diameter, and 0.260 in inside diameter.

42525

A coiled, hardened, split circular lock washer with a slightly trapezoidal wire section. It is made of silicon bronze and has a bronze color. The washer measures 0.062 in thick, 0.487 in outside diameter, and 0.260 in inside diameter.
3/8 Split Lock Washer Silicon Bronze.

SBSLW38-C

3/8 Split Lock Washer Silicon Bronze.
Washer, Lock, Size 3/8 Inch, Stainless Steel

E148-3/8SSC

Washer, Lock, Size 3/8 Inch, Stainless Steel
A coiled, hardened, split circular lock washer with a slightly trapezoidal wire section. It is made of silicon and has a bronze color. The washer has a thickness of 0.047 in, an outside diameter of 0.334 in, and an inside diameter of 0.200 in.

42515

A coiled, hardened, split circular lock washer with a slightly trapezoidal wire section. It is made of silicon and has a bronze color. The washer has a thickness of 0.047 in, an outside diameter of 0.334 in, and an inside diameter of 0.200 in.
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.

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.
A split lock washer with a coiled, hardened, split circular form and a slightly trapezoidal wire section. It is made of silicon bronze and has a bronze color. The washer measures 0.031 in thick, 0.250 in outside diameter, and 0.148 in inside diameter.

42505

A split lock washer with a coiled, hardened, split circular form and a slightly trapezoidal wire section. It is made of silicon bronze and has a bronze color. The washer measures 0.031 in thick, 0.250 in outside diameter, and 0.148 in inside diameter.
A split lock washer made of silicon bronze. It is a hardened, coiled circular washer with a slightly trapezoidal wire section. The washer has a 0.040 in thickness, 0.293 in outside diameter, and 0.174 in inside diameter.

42510

A split lock washer made of silicon bronze. It is a hardened, coiled circular washer with a slightly trapezoidal wire section. The washer has a 0.040 in thickness, 0.293 in outside diameter, and 0.174 in inside diameter.
A coiled, hardened, split circular lock washer with a slightly trapezoidal wire section. It is made of silicon and finished in bronze. The washer has a 0.125 in thickness, 0.869 in outside diameter, and 0.512 in inside diameter.

42540

A coiled, hardened, split circular lock washer with a slightly trapezoidal wire section. It is made of silicon and finished in bronze. The washer has a 0.125 in thickness, 0.869 in outside diameter, and 0.512 in inside diameter.

Frequently Asked Questions

What material is the Minerallac 42530 lock washer made from?

The Minerallac 42530 lock washer is made from high-grade silicon bronze alloys, specifically C65100 or C65500.

What size fasteners is the 42530 lock washer compatible with?

The Minerallac 42530 lock washer is designed for use with 5/16" fasteners.

Where are Minerallac 42530 lock washers manufactured?

Minerallac 42530 lock washers are manufactured in the USA.

What are the benefits of using silicon bronze for lock washers?

Silicon bronze offers superior corrosion resistance, making it ideal for harsh environments like marine hardware and chemical processing equipment, and it resists degradation in corrosive conditions.

What is the design of the Minerallac 42530 lock washer?

The Minerallac 42530 features a medium-split design that ensures consistent spring tension to prevent fasteners from loosening due to vibration or mechanical stress.

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.