Authorized Minerallac Company Distributor
Minerallac Company 40481J - A serrated hex flange lock nut with 5/16" size and 18 coarse threads. It is made of steel with a zinc plated finish and silver color. The flange is intended to provide a more uniform bearing-stress to clamp-force ratio, and the nut is designed to resist loosening and span oversized or poorly aligned holes.
Minerallac Company

40481J

Alternate Item Number: 12112003

UPC: 085937002778


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Minimum Qty: 100

Multiplier: 100

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Overview

The Minerallac Company 5/16-18 Zinc-Plated Serrated Flange Hex Nut (SKU: 40481J) provides secure mechanical and structural fastening. Constructed from durable zinc-plated steel, this nut is designed for reliability in industrial applications. Its key feature is the serrated flange, which actively engages with the mating surface to prevent loosening under vibration. This makes it particularly suitable for machinery, equipment assembly, and construction where consistent connection integrity is critical. The machine thread size is 5/16-18, ensuring compatibility with standard bolts and threaded rods. The integrated flange distributes the load evenly across the connection point, enhancing stability and reducing the risk of material damage. Manufactured in the USA, this fastener adheres to high standards of quality and production. The zinc plating offers essential corrosion resistance, extending the lifespan of the fastener in various environmental conditions.
  • 5/16-18 machine thread size for broad compatibility.
  • Serrated flange actively prevents loosening from vibration.
  • Zinc-plated steel construction for strength and corrosion resistance.
  • Integrated flange distributes load for enhanced connection stability.
  • Manufactured in the USA for quality assurance.

Specifications

Application
Flange provides a more uniform bearing-stress to clamp-force ratio than other low carbon lock nuts.
Color
Silver
Finish
Zinc Plated
Material of Construction
Steel
Nut Type
Lock Nut
Rockwell Hardness
Rockwell HR15N 78 – 90
Size
5/16"
Special Features
Requires a greater amount of torque to loosen than to tighten the nut. Will span oversized or poorly aligned holes. Does not gall screw threads.
Thickness
0.283" IN
Thread Direction
Right
Thread Direction
Right-Handed
Thread Size
18 TPI
Thread Type
Coarse
Type
Serrated Hex Flange Nut
Width
0.5 in
Width
12.7 mm
Package Weight (Imperial)
1.1 lbs
A serrated hex flange lock nut with 3/8" size and 16 coarse threads. It is made of steel with a zinc plated finish and a silver color. The flange design provides a more uniform bearing-stress to clamp-force ratio, and it is intended to span oversized or poorly aligned holes.

40482J

A serrated hex flange lock nut with 3/8" size and 16 coarse threads. It is made of steel with a zinc plated finish and a silver color. The flange design provides a more uniform bearing-stress to clamp-force ratio, and it is intended to span oversized or poorly aligned holes.
3/8-16 Hex Nut Hardened Steel, Grade 5, USA Made, Zinc, U/M 100

JG5N165D

3/8-16 Hex Nut Hardened Steel, Grade 5, USA Made, Zinc, U/M 100
Nut, Hex Heavy, Size 1/4 Inch-20, Steel

H 114 A

Nut, Hex Heavy, Size 1/4 Inch-20, Steel
Nut, Steel, ERNI MiniBridge

394905-E

Nut, Steel, ERNI MiniBridge
A machine screw nut designed to be used specifically with machine screws. It is a hexagonal nut made of steel with a zinc plated finish. The nut is size #8 with 32 coarse threads, right-hand thread direction, and dimensions of 0.124 in height and 0.343 in width.

40110J

A machine screw nut designed to be used specifically with machine screws. It is a hexagonal nut made of steel with a zinc plated finish. The nut is size #8 with 32 coarse threads, right-hand thread direction, and dimensions of 0.124 in height and 0.343 in width.
This is a 1/2"-13 finished hex nut. It is made of 18-8 stainless steel with a stainless finish and silver color. The nut has coarse, right-handed threads and is intended for use with bolts with a minimum tensile strength equal to or less than 150,000 PSI.

70140J

This is a 1/2"-13 finished hex nut. It is made of 18-8 stainless steel with a stainless finish and silver color. The nut has coarse, right-handed threads and is intended for use with bolts with a minimum tensile strength equal to or less than 150,000 PSI.
Heavy hex nut made of steel with a zinc plated finish. It is sized 5/8" with 11 threads per inch and a clockwise thread direction. The nut is silver in color and has a width of 1.062" and a height of 0.609".

40146HJ

Heavy hex nut made of steel with a zinc plated finish. It is sized 5/8" with 11 threads per inch and a clockwise thread direction. The nut is silver in color and has a width of 1.062" and a height of 0.609".
A 1/2 in.-13 heavy hex nut for use with machine screws. It is made of steel with a zinc plated finish and silver color. The sheet lists it as Grade A, with coarse right-hand threads and dimensions of 0.437 in. height and 0.750 in. width.

40140HJ

A 1/2 in.-13 heavy hex nut for use with machine screws. It is made of steel with a zinc plated finish and silver color. The sheet lists it as Grade A, with coarse right-hand threads and dimensions of 0.437 in. height and 0.750 in. width.

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.