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Minerallac Company 40915BFG - Belleville washers made of spring steel with a zinc plated finish. They fit 3/8" bolt sizes and have an inside diameter of 0.386" and an outside diameter of 1.063". The thickness is 0.082". The sheet lists a torque value of 17.9 ft/lbs and flat load values of 2700 to 3300.
Minerallac Company

40915BFG

Alternate Item Number: 14864673

UPC: 085937057105


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Minimum Qty: 1000

Multiplier: 1000

*Contact for lower quantities*

Overview

The Minerallac Company 40915BFG is a 3/8" Belleville washer, also known as a disc spring, constructed from high-tensile spring steel with a durable zinc-plated finish. Its specific dimensions include an inside diameter of 0.390", an outside diameter of 0.750", and a thickness of 0.050". Belleville washers function as a convex disc that, when subjected to opposing forces at its periphery and center, can achieve a desired load and travel. They are effective when used individually or stacked to create specific spring characteristics. The 3/8" bolt size compatibility ensures straightforward integration with standard hardware. This washer is ideal for applications requiring joint integrity under dynamic loads, such as electrical panel mounting, conduit systems, and machinery assemblies. The spring steel material offers excellent elasticity and tensile strength, allowing the washer to maintain uniform pressure and thermal stability. Its design provides greater deflection under load compared to flat washers, making it suitable for high-stress applications where preventing loosening from vibration is critical. Packaged in standard quantities of 100, with a bulk packaging option of 1500 units.
  • 3/8" Bolt Size Compatibility
  • Spring Steel Material for High Tensile Strength and Elasticity
  • Zinc Plated Finish for Corrosion Resistance
  • Inside Diameter: 0.390", Outside Diameter: 0.750", Thickness: 0.050"
  • Designed for Load Distribution and Vibration Resistance

Specifications

APW (Each)
0.01788
Def Nom
0.025"
Finish
Zinc Plated
Fits Bolt Sizes
3/8" IN
Flat Load LL
2700
Flat Load UL
3300
ID (Min)
0.386"
Inside Diameter
0.386" IN
LBS F 100%
3000
Material
Spring Steel
Material
Spring Steel – AISI 6150
OD (Max)
1.063"
OH Ref
0.107"
Outside Diameter
1.063" IN
Size
3/8"
Size
3/8 Inch
Thickness
0.082" IN
THK Nom
0.082"
Torque FT
18.7 ft/lbs
Torque FT
17.9/ lbs
Type
Specialty Washers
Belleville washers made of spring steel with a zinc plated finish. They fit 1/4" bolt sizes and are supplied in a jar. The sheet lists a thickness of 0.052", an inside diameter of 0.258", and an outside diameter of 0.688".

40905J

Belleville washers made of spring steel with a zinc plated finish. They fit 1/4" bolt sizes and are supplied in a jar. The sheet lists a thickness of 0.052", an inside diameter of 0.258", and an outside diameter of 0.688".
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
Belleville washers for 3/8" bolt sizes. They are made from Steel - 6150 and have a zinc plated finish. The sheet lists an inside diameter of 0.386", an outside diameter of 1.188", and a nominal thickness of 0.091".

40915HDJ

Belleville washers for 3/8" bolt sizes. They are made from Steel - 6150 and have a zinc plated finish. The sheet lists an inside diameter of 0.386", an outside diameter of 1.188", and a nominal thickness of 0.091".
Belleville washers for 1/2" bolt sizes. Made from Steel-1074 with a zinc plated finish. The sheet lists a 0.515" minimum inside diameter, 1.188" maximum outside diameter, and 0.125" nominal thickness.

40925HDJ

Belleville washers for 1/2" bolt sizes. Made from Steel-1074 with a zinc plated finish. The sheet lists a 0.515" minimum inside diameter, 1.188" maximum outside diameter, and 0.125" nominal thickness.
Belleville washers in a heavy duty style for 1/2" size applications. The sheet identifies them as made of spring steel and supplied in carton quantity. This product is listed as catalog number 40925HDBFG.

40925HDBFG

Belleville washers in a heavy duty style for 1/2" size applications. The sheet identifies them as made of spring steel and supplied in carton quantity. This product is listed as catalog number 40925HDBFG.
Belleville washers for 1/2" bolt sizes. Made from steel-6150 with a zinc plated finish. The washer has an inside diameter of 0.515", an outside diameter of 1.188", and a nominal thickness of 0.091". Listed load and torque values include 23.2 ft/lbs torque and 3800 lbs at 100% load.

40925BFG

Belleville washers for 1/2" bolt sizes. Made from steel-6150 with a zinc plated finish. The washer has an inside diameter of 0.515", an outside diameter of 1.188", and a nominal thickness of 0.091". Listed load and torque values include 23.2 ft/lbs torque and 3800 lbs at 100% load.
Minerallac M8 x 18mm BELLEVILLE WASHER OD x 2.0mm Thickness, DIN 6796, Zinc Plated,.

M0818020BWJ

Minerallac M8 x 18mm BELLEVILLE WASHER OD x 2.0mm Thickness, DIN 6796, Zinc Plated,.
Minerallac 10mm x 23mm OD x 2.5mm Thickness, DIN6796, Zinc Plated.

M1023025BWJ

Minerallac 10mm x 23mm OD x 2.5mm Thickness, DIN6796, Zinc Plated.

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.