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Minerallac Company 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".
Minerallac Company

55172

Alternate Item Number: 12121574

UPC: 085937551726

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Minimum Qty: 100

Multiplier: 100

*Contact for lower quantities*

Overview

The Minerallac Company 55172 is a 1/4-20 x 4-1/2 inch zinc-plated (ZP) carriage bolt, manufactured in the USA. Engineered for wood applications, this bolt features a round head with an integrated square neck. This design is crucial for preventing rotation when the bolt is tightened, ensuring a smooth, flush surface finish. The unified 1/4-20 thread pitch provides a secure and reliable fastening solution for construction, woodworking, and various industrial projects. Constructed from durable zinc-plated steel, it offers enhanced corrosion resistance for longevity. Ideal for applications where a clean appearance and steadfast hold are paramount. This carriage bolt is a Grade 2 fastener, ensuring it meets standard requirements for general-purpose use. Its robust construction and zinc plating make it suitable for both interior and exterior applications where moderate corrosion resistance is needed. The specific dimensions of 1/4-20 thread size and a 4-1/2 inch length make it versatile for joining thicker wood components or for projects requiring extended reach. Minerallac Company is known for its quality fasteners, and the 55172 model upholds this reputation for dependable performance.
  • 1/4-20 thread size with a 4-1/2 inch length
  • Zinc-plated steel for corrosion resistance
  • Square neck under round head prevents rotation
  • Ideal for wood and construction applications
  • Manufactured in the USA by Minerallac Company

Specifications

Application
The square neck is designed to keep the bolt from turning as a nut is tightened.
Diameter
0.25 in
Diameter
6.35 mm
Finish
Zinc Plated
Head Type
Round Head
Head Type
Rounded Head
Length
4.5 in
Length
114.3 mm
Material
Steel
Size
1/4-20 X 4-1/2
Size
1/4"–20 x 4-1/2"
Thread Type
20 TPI
Type
Carriage Bolt
This is a carriage bolt with a round head and square neck. It is made of steel with a zinc plated finish. The bolt is 5.000" long and 0.250" in diameter, sized 1/4"-20 x 5".

55180

This is a carriage bolt with a round head and square neck. It is made of steel with a zinc plated finish. The bolt is 5.000" long and 0.250" in diameter, sized 1/4"-20 x 5".
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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.
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Carriage bolt with a round head and zinc plated finish. Made of steel and sized 1/4"-20 x 6" with a 0.250" diameter and 6.000" length. The square neck is designed to keep the bolt from turning as a nut is tightened.

55196

Carriage bolt with a round head and zinc plated finish. Made of steel and sized 1/4"-20 x 6" with a 0.250" diameter and 6.000" length. The square neck is designed to keep the bolt from turning as a nut is tightened.
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55380

Carriage bolts designed to keep the bolt from turning when a nut is being tightened. They are made of steel with a zinc plated finish. The bolt length is 5.000" and the size is 5/16"–18 x 5".
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55600

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 3/8"-16 x 8" and the diameter is 0.375".

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.