Minerallac Company 40915 - A Belleville washer, or disc spring, used singly or in stacks to achieve a desired load and travel. It is made of spring steel with a zinc plated finish. The washer fits 3/8 in bolt sizes and has a 0.750 in outside diameter, 0.390 in inside diameter, and 0.050 in thickness.
Minerallac Company

40915

Alternate Item Number: 12116891

UPC: 085937409157


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Minimum Qty: 100

Multiplier: 100

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Overview

The Minerallac Company 40915J is a precision-engineered Belleville washer, also known as a disc spring, designed for controlled load and deflection in industrial applications. Manufactured in the USA from high-quality Spring Steel – AISI 6150, this zinc-plated washer provides enhanced corrosion resistance and reliable performance. It is specifically designed to fit 3/8" bolt sizes. Key specifications for the 40915J include: - Fits Bolt Sizes: 3/8" - Material: Spring Steel – AISI 6150 - Finish: Zinc Plated - Inside Diameter (Min): 0.386" - Outside Diameter (Max): 1.063" - Nominal Thickness: 0.082" - Reference Height: 0.107" - Nominal Deflection: 0.025" - Torque: 18.7 ft/lbs - 100% Load: 3000 lbs - Flat Load LL: 2700 lbs - Flat Load UL: 3300 lbs - APW (Each): 0.01788 lbs This Belleville washer offers exceptional design flexibility. It can be used individually to achieve specific load and travel requirements, or stacked in series to increase travel while maintaining load. Stacking in parallel configurations increases load capacity while preserving travel. Ideal applications include vibration damping in machinery, thermal expansion compensation in structural assemblies, load distribution in electrical enclosures, and precision alignment in mechanical systems. The 40915J ensures reliable performance in demanding environments. It is compliant with the Buy America Act, Buy American Act, and RoHS. Packaged 100 per jar, with 600 per master carton, the Minerallac 40915J is a cost-effective solution for OEMs, contractors, and maintenance teams seeking durable, high-performance disc springs. SKU: 40915. UNSPSC Code: 31161825. Country of Origin: US.
  • Precision-engineered Belleville washer (disc spring) for controlled load and deflection.
  • Constructed from high-quality Spring Steel – AISI 6150 with a durable zinc-plated finish.
  • Designed to fit 3/8" bolt sizes with specific dimensions: 0.386" ID, 1.063" OD, 0.082" nominal thickness.
  • Offers a 100% load capacity of 3000 lbs and nominal deflection of 0.025".
  • Compliant with Buy America Act, Buy American Act, and RoHS; Made in USA.
  • Compliance: Buy America Act, Buy American Act, RoHS, UL-listed, Prop 65 compliant
  • Packaging: 100 per jar (600 per master carton), manufactured in the USA
  • Manufacturer: Minerallac Company
  • Made in USA

Specifications

Finish
Zinc Plated
Fits Bolt Sizes
3/8" IN
Inside Diameter
0.390" IN
Material
Spring steel with zinc plating
Material
Spring Steel
Material
18-8 Stainless Steel
Outside Diameter
0.750" IN
Size
3/8 inch bolt size, 0.750 inch outside diameter, 0.390 inch inside diameter, 0.050 inch thickness
Size
3/8 in bolt size, 0.750 in outside diameter, 0.390 in inside diameter, 0.050 in thickness
Size
3/8 in bolt size, 0.750 in OD, 0.390 in ID, 0.050 in thickness
Size
0.750 in outside diameter, 0.390 in inside diameter, 0.050 in thickness
Size
0.750 in OD, 0.390 in ID, 0.050 in thickness
Size
3/8" Bolt, 0.750" OD, 0.390" ID, 0.050" Thickness
Size
3/8"
Size
3/8" bolt size, 0.750" OD, 0.390" ID, 0.050" thickness
Size
3/8 inch bolt size, 0.750 in outside diameter, 0.390 in inside diameter, 0.050 in thickness
Size
3/8" Bolt
Size
3/8 Inch
Thickness
0.050" IN
Type
Specialty Washers
Package Weight (Imperial)
0.24 lbs
A Belleville washer, also called a disc spring, used singly or in stacks to achieve a desired load and travel. It is made of spring steel with a zinc plated finish. The washer fits 5/16 in bolt sizes and has an outside diameter of 0.625 in, an inside diameter of 0.317 in, and a thickness of 0.048 in.

40910

A Belleville washer, also called a disc spring, used singly or in stacks to achieve a desired load and travel. It is made of spring steel with a zinc plated finish. The washer fits 5/16 in bolt sizes and has an outside diameter of 0.625 in, an inside diameter of 0.317 in, and a thickness of 0.048 in.
Belleville Spring Washer, 5/8 Inch Bolt Size, Steel with Zinc Chromate Finish

60804-TB

Belleville Spring Washer, 5/8 Inch Bolt Size, Steel with Zinc Chromate Finish

Frequently Asked Questions

What material is the Minerallac 40915 Belleville washer made from?

The Minerallac 40915 Belleville washer is constructed from 18-8 stainless steel, offering excellent corrosion resistance.

How many Belleville washers are included in a jar of Minerallac 40915?

Each jar of Minerallac 40915 contains 100 Belleville washers, designed for convenient gravity feeding.

What is the primary function of a Belleville washer like the Minerallac 40915?

Belleville washers provide a spring force to maintain a load in an assembly, preventing loosening under vibration or thermal expansion.

What are the typical applications for Minerallac 40915 Belleville washers?

These washers are suitable for electrical, mechanical, and structural applications where precise load distribution and prevention of joint loosening are critical.

Is the Minerallac 40915 washer suitable for harsh environments?

Yes, the 18-8 stainless steel construction provides excellent corrosion resistance, making it suitable for a wide range of environments.

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.