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Minerallac Company 55556 - This is a 3/8-16 x 3-1/2 inch carriage bolt. It is zinc plated. The sheet identifies it as product 55556.
Minerallac Company

55556

Alternate Item Number: 16733996

UPC: 085937555564


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Minimum Qty: 50

Multiplier: 50

*Contact for lower quantities*

Overview

The Minerallac Company 3/8-16 x 3-1/2" Zinc Plated Carriage Bolt (SKU: 55556) is a Grade 2 fully threaded fastener designed for secure fastening in wood and metal applications. This bolt features a smooth, rounded head and a square neck that locks into materials, preventing rotation during installation. Its zinc-plated finish provides corrosion resistance, making it suitable for indoor and outdoor use. The thread size is 3/8-16, and the length is 3-1/2 inches. The square neck under the head ensures a tight grip in wood, preventing the bolt from turning as the nut is tightened. Zinc plating offers reliable protection against rust and wear in exposed environments. Supplied in a gravity feed jar containing 25 pieces, with 150 pieces per master carton, this packaging design allows for easy dispensing in high-volume applications. The bolt is manufactured in the USA by Minerallac, a trusted name in industrial fasteners since 1927, ensuring consistent quality and compliance with industry standards. Ideal for construction, electrical, HVAC, and general fabrication where a flush surface and secure hold are required, this carriage bolt meets the demands of professionals who prioritize durability and performance in their projects.
  • Grade 2 steel construction with zinc-plated finish for corrosion resistance
  • 3/8-16 thread size with 3-1/2" length for versatile fastening
  • Square neck prevents bolt rotation during installation
  • Smooth rounded head for flush surface mounting
  • Supplied in 25-piece gravity feed jars (150 per master carton)

Specifications

Material
Steel
Size
3/8-16 x 3-1/2"
Package Weight (Imperial)
5.15 lbs
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Frequently Asked Questions

Is the 55556 bolt fully threaded?

Yes, the 55556 carriage bolt is fully threaded along its entire length.

What is the packaging quantity for the 55556?

The bolt is supplied in a gravity feed jar containing 25 pieces, with 150 pieces per master carton.

Where is the 55556 carriage bolt manufactured?

The bolt is manufactured in the USA by Minerallac Company.

What grade is the 55556 carriage bolt?

The bolt is Grade 2, meeting ASTM A307 standards for general-purpose fasteners.

What is the zinc plating used for?

The zinc plating provides corrosion resistance for indoor and outdoor use.

What materials can the 55556 bolt fasten?

The bolt is designed for secure fastening in both wood and metal applications.

How does the square neck prevent rotation?

The square neck under the head locks into the material, preventing the bolt from turning when the nut is tightened.

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.