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Minerallac Company 42530J - A 5/16" split lock washer with a medium profile. It is made of silicon bronze with a bronze color finish. The washer has an outside diameter of 0.583", an inside diameter of 0.322", and a thickness of 0.078". It is designed to resist loosening caused by vibration and corrosion and to provide a hardened bearing surface for more uniform torque control and load distribution.
Minerallac Company

42530J

Alternate Item Number: 14178369

UPC: 085937046659

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Minimum Qty: 100

Multiplier: 100

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Overview

The Minerallac Company 42530J is a 5/16" medium split lock washer manufactured from durable silicon bronze, meeting ASTM F467 and ASTM F468 standards for non-ferrous alloys. This material provides excellent corrosion resistance, making it ideal for applications where standard steel fasteners may degrade, such as industrial, marine, or outdoor environments. Silicon bronze offers superior resistance to saltwater, chlorides, and other corrosive elements, ensuring long-term performance in harsh conditions. Lock washers are crucial for preventing the loosening and turning of bolted connections, especially in applications subjected to vibration, dynamic loads, or temperature fluctuations. The medium split design ensures a reliable locking action by applying spring tension against the mating surfaces, maintaining consistent pressure to resist loosening over time. Each jar contains 100 US-made washers, offering a convenient quantity for your projects. Minerallac is a trusted manufacturer known for reliable fastening solutions, with a reputation for quality and durability in electrical, mechanical, and construction applications. The 42530J is part of Minerallac’s specialized line of corrosion-resistant fasteners, designed for professionals requiring dependable performance in demanding environments.
  • Material: Silicon Bronze for superior corrosion resistance
  • Size: 5/16" medium split lock washer
  • Prevents loosening in vibration-prone applications
  • US-made for quality and reliability
  • Convenient jar packaging with 100 pieces

Specifications

Application
creating more uniform torque control and load distribution.;Provides a hardened bearing surface
Color
Bronze
Inside Diameter
0.322 in
Inside Diameter
8.1788 mm
Material
Silicon
Material Quality
Silicon Bronze (Alloy 651)
Outside Diameter
0.583 in
Outside Diameter
14.8082 mm
Rockwell Hardness
C38 - 43
Special Features
Applies greater bolt tension per unit of applied torque. Resists loosening caused by vibration and corrosion.
Thickness
0.078 in
Thickness
1.9812 mm
Type
Split Lock Washer
Package Weight (Imperial)
0.39 lbs
Split lock washer for use where greater bolt tension per unit of applied torque is needed. It resists loosening caused by vibration and corrosion and provides a hardened bearing surface for more uniform torque control and load distribution. The washer is made of silicon bronze and is bronze in color.

42525J

Split lock washer for use where greater bolt tension per unit of applied torque is needed. It resists loosening caused by vibration and corrosion and provides a hardened bearing surface for more uniform torque control and load distribution. The washer is made of silicon bronze and is bronze in color.
Washer, Lock, Size 3/8 Inch, Stainless Steel

E148-3/8SSC

Washer, Lock, Size 3/8 Inch, Stainless Steel
A 1/4 inch locking washer in medium split style. It is made from Type 316 stainless steel. The sheet identifies it as supplied in a jar.

70525SS316USJ

A 1/4 inch locking washer in medium split style. It is made from Type 316 stainless steel. The sheet identifies it as supplied in a jar.
This is a 3/4 inch lock washer. It is made of silicon bronze and is specified as medium. The sheet lists it as supplied in a jar.

42550J

This is a 3/4 inch lock washer. It is made of silicon bronze and is specified as medium. The sheet lists it as supplied in a jar.
Split lock washer for #12 fasteners. It is made of silicon bronze with a bronze color finish. The washer has an inside diameter of 0.227", a thickness of 0.056", and an outside diameter of 0.377".

42517J

Split lock washer for #12 fasteners. It is made of silicon bronze with a bronze color finish. The washer has an inside diameter of 0.227", a thickness of 0.056", and an outside diameter of 0.377".
This is a #6 split lock washer in medium size. It is made of silicon bronze with a bronze color. The washer has an inside diameter of 0.148", an outside diameter of 0.250", and a thickness of 0.031".

42505J

This is a #6 split lock washer in medium size. It is made of silicon bronze with a bronze color. The washer has an inside diameter of 0.148", an outside diameter of 0.250", and a thickness of 0.031".
This is a split lock washer for #8 fasteners. It is made of silicon bronze with a bronze color and medium thickness. The washer is designed to apply greater bolt tension per unit of applied torque and to resist loosening caused by vibration and corrosion. It provides a hardened bearing surface for more uniform torque control and load distribution.

42510J

This is a split lock washer for #8 fasteners. It is made of silicon bronze with a bronze color and medium thickness. The washer is designed to apply greater bolt tension per unit of applied torque and to resist loosening caused by vibration and corrosion. It provides a hardened bearing surface for more uniform torque control and load distribution.
Split lock washer made of silicon bronze with a bronze color finish. It has a thickness of 0.094", an outside diameter of 0.680", and an inside diameter of 0.385". The washer is intended to apply greater bolt tension per unit of applied torque and resist loosening caused by vibration and corrosion.

42535J

Split lock washer made of silicon bronze with a bronze color finish. It has a thickness of 0.094", an outside diameter of 0.680", and an inside diameter of 0.385". The washer is intended to apply greater bolt tension per unit of applied torque and resist loosening caused by vibration and corrosion.

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.