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Minerallac Company 55348 - These are carriage bolts with a round head and square neck design. They are made of steel with a zinc plated finish. The bolt size is 5/16-18 x 3 in., with a 5/16 in. diameter and 18 threads per inch.
Minerallac Company

55348

Alternate Item Number: 12114323

UPC: 085937553485


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Minimum Qty: 100

Multiplier: 100

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Overview

The Minerallac Company 5/16-18 x 3" Carriage Bolt (SKU: 55348) is a Grade 2/A307 fastener designed for secure joining applications. This bolt features a 5/16-18 thread size and a 3-inch length, providing substantial grip and fastening capability. The zinc plating offers moderate corrosion resistance, making it suitable for general-purpose use in various industrial and construction settings. Manufactured in the USA, this carriage bolt is part of Minerallac's extensive line of fasteners, known for their reliability. It is typically supplied in gravity feed jars for convenient dispensing and handling in workshops and assembly lines. This specific item is part of a larger catalog of bolts and fasteners offered by Minerallac.
  • 5/16-18 thread size
  • 3-inch length
  • Zinc plated finish for moderate corrosion resistance
  • Grade 2/A307 for general-purpose applications
  • Manufactured in the USA

Specifications

Application
The square neck is designed to keep the bolt from turning as a nut is thightened.
Diameter
5/16 in
Finish
Zinc Plated
Head Type
Round Head
Head Type
Rounded Head
Length
3 in
Length
76.2 mm
Material
Steel
Size
5/16-18 x 3
Size
5/16-18 x 3"
Thread
18
Thread Type
18 TPI
Type
Carriage Bolts
Package Weight (Imperial)
7.08 lbs
Carriage bolts with a round head and square neck design to keep the bolt from turning as a nut is tightened. They are made of steel with a zinc plated finish. The size is 3/8-16 x 2 in, with a 3/8 in diameter and 2.000 in length.

55532

Carriage bolts with a round head and square neck design to keep the bolt from turning as a nut is tightened. They are made of steel with a zinc plated finish. The size is 3/8-16 x 2 in, with a 3/8 in diameter and 2.000 in length.
Carriage Bolt, Galvanized, Mushroom Head, 2 in. length, 1/2-13 in. Size, Right Hand thread, 25 per pack

JCB33G

Carriage Bolt, Galvanized, Mushroom Head, 2 in. length, 1/2-13 in. Size, Right Hand thread, 25 per pack
Carriage bolts with a round head and square neck designed to keep the bolt from turning as a nut is tightened. Made of steel with a zinc plated finish. The sheet lists a length of 1.250 in, a diameter of 3/8 in, and a 16 thread size.

55524

Carriage bolts with a round head and square neck designed to keep the bolt from turning as a nut is tightened. Made of steel with a zinc plated finish. The sheet lists a length of 1.250 in, a diameter of 3/8 in, and a 16 thread size.
Carriage bolts with a round head and square neck designed to keep the bolt from turning as a nut is tightened. They are made of steel with a zinc plated finish. The size is 3/8-16 x 3 in, with a 3/8 in diameter and 16 thread count.

55548

Carriage bolts with a round head and square neck designed to keep the bolt from turning as a nut is tightened. They are made of steel with a zinc plated finish. The size is 3/8-16 x 3 in, with a 3/8 in diameter and 16 thread count.
Carriage bolt with a round head and square neck design to keep the bolt from turning as a nut is tightened. It is made of steel with a zinc plated finish. The bolt measures 4.500 inches long and 0.250 inches in diameter, sized 1/4"-20 x 4-1/2".

55172

Carriage bolt with a round head and square neck design to keep the bolt from turning as a nut is tightened. It is made of steel with a zinc plated finish. The bolt measures 4.500 inches long and 0.250 inches in diameter, sized 1/4"-20 x 4-1/2".
Carriage bolts with a round head and square neck designed to keep the bolt from turning as a nut is tightened. They are made of steel with a zinc plated finish. The size is 3/8"-16 x 6" and the length is 6.000" with a 0.375" diameter.

55596

Carriage bolts with a round head and square neck designed to keep the bolt from turning as a nut is tightened. They are made of steel with a zinc plated finish. The size is 3/8"-16 x 6" and the length is 6.000" with a 0.375" diameter.
Carriage bolts with a round head and square neck designed to keep the bolt from turning as a nut is tightened. They are made of steel with a zinc plated finish. The bolt length is 4.500 in. and the size is 3/8 in.-16 x 4-1/2 in.

55572

Carriage bolts with a round head and square neck designed to keep the bolt from turning as a nut is tightened. They are made of steel with a zinc plated finish. The bolt length is 4.500 in. and the size is 3/8 in.-16 x 4-1/2 in.
A carriage bolt with a round head and short square shoulder under the head. It is made of steel with a zinc plated finish. The bolt size is #10-24 x 1 in, with a 1.000 in length and 24 TPI thread size.

54716

A carriage bolt with a round head and short square shoulder under the head. It is made of steel with a zinc plated finish. The bolt size is #10-24 x 1 in, with a 1.000 in length and 24 TPI thread size.

Frequently Asked Questions

What is the thread size of this carriage bolt?

This Minerallac carriage bolt has a 5/16-18 thread size.

What is the length of this Minerallac carriage bolt?

The Minerallac 5/16-18 carriage bolt is 3 inches in length.

What grade is this carriage bolt?

This carriage bolt is Grade 2/A307.

What type of finish does this bolt have?

This bolt features a zinc plated finish.

Where is this Minerallac carriage bolt manufactured?

This Minerallac carriage bolt is manufactured in the USA.

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.