Minerallac 59625J Hex Reducing...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$147.77
Minerallac 59625J Hex Reducing Coupling, 1/4"-20 to 3/8"-16, Zinc-Plated Finish, Pack of 100

Minerallac 59625J Hex Reducing Coupling, 1/4"-20 to 3/8"-16, Zinc-Plated Finish, Pack of 100

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Model: 59625J

In Stock (leaves warehouse same day if ordered before 3pm ET)

$147.77
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Minerallac 59625J Hex Reducing Coupling, 1/4"-20 to 3/8"-16, Zinc-Plated Finish

The Minerallac 59625J Hex Reducing Coupling is designed to join threaded rod or bolts of two different diameters in a single, secure connection. This reducing coupling transitions from a 3/8"-16 thread on one end to a 1/4"-20 thread on the other, making it easy to combine mismatched rod or bolt sizes without swapping out an entire length of threaded rod. The hex-shaped body gives installers flat wrenching surfaces for fast, confident tightening, and the zinc-plated finish is applied to help the coupling resist surface corrosion during storage and everyday use. Packaged in a jar, this coupling is well suited for electricians, mechanical contractors, and maintenance technicians who need a dependable way to transition between two common thread sizes on the job.

Key Features

  • Reducing Thread Design: Steps down from a 3/8"-16 thread to a 1/4"-20 thread, letting installers connect two different rod or bolt sizes with a single fitting instead of re-cutting or replacing threaded rod.
  • Hex Body Profile: The hexagonal outer shape provides flat surfaces for a wrench or socket, simplifying tightening in tight or overhead installation spaces.
  • Zinc-Plated Finish: A zinc-plated surface treatment is applied to help resist corrosion and extend the useful life of the coupling in typical indoor installation environments.
  • Compact, Purpose-Built Hardware: Sized specifically to bridge 1/4"-20 and 3/8"-16 threaded components, keeping support and hanger assemblies aligned and properly connected.
  • Jar Packaging: Supplied in a jar, keeping multiple reducing couplings organized, protected, and easy to grab one at a time on the truck, in the shop, or on the job site.
  • Straightforward Installation: Threads directly onto standard rod or bolt ends, requiring no special tools beyond a standard wrench to achieve a secure mechanical connection.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Threaded Rod Support and Hanger Systems
  • Electrical and Mechanical Assembly Connections
  • Cable Tray and Conduit Support Structures
  • HVAC and Piping Support Assemblies
  • Renovation and New Construction Projects

Why Minerallac?

Minerallac designs hardware components like the 59625J Hex Reducing Coupling with an emphasis on practical, job-ready performance for professional installers, electricians, and maintenance crews. The zinc-plated finish and hex-drive body reflect a straightforward, durable design intended to hold up to everyday handling and installation, while the reducing thread configuration helps simplify support and hanger assemblies that call for two different rod or bolt sizes. Choosing purpose-built hardware like this Minerallac coupling can help ensure secure, properly aligned connections throughout a support or mounting system.

Manufacturer Resources

Product Specs

list_batch:
MIN-20260918
Product Type:
Reducing Coupling
Product Finish:
Zinc-Plated
Configuration:
Hex
Department:
Electrical
Product Subgroup:
Electrical Fasteners
Product Size:
1/4"
Pack size (unit):
100
Product Group:
Hangers, Supports & Fasteners
Product Color:
Silver

Minerallac 59625J – Frequently Asked Questions

1) What thread sizes does the Minerallac 59625J reducing coupling connect?
The 59625J joins 3/8"-16 thread on one end to 1/4"-20 on the other. That lets you run a 3/8 inch all-thread drop and finish in 1/4-20 at the fixture, or the reverse, without cutting in a whole new rod length.
2) Can I use a hex reducing coupling to hang conduit or cable tray from 3/8 inch rod with 1/4-20 hardware?
Yes, that is the job it is built for. Thread the 3/8"-16 end onto the rod coming off the structure and pick up 1/4-20 hardware at the load end. Minerallac lists threaded rod support and hanger systems, cable tray and conduit supports, and HVAC and piping supports among its uses. The hex body gives you wrench flats so you can snug it overhead with a standard wrench or socket.
3) Is the Minerallac 59625J coupling OK for damp or outdoor use?
The finish is zinc plating, which Minerallac describes as resisting surface corrosion in typical indoor installation environments. Treat it as an indoor or protected-location fastener. For wet, exterior, or corrosive areas, specify a stainless or hot-dip galvanized coupling instead.
4) Will a 1/4-20 to 3/8-16 coupling work as a straight rod coupling for same-size rod?
No. The 59625J is a reducing coupling, with a different thread at each end, so it cannot splice two pieces of the same-diameter rod. For joining 3/8"-16 to 3/8"-16 or 1/4"-20 to 1/4"-20, order a straight hex coupling nut in that single size.
5) How many couplings come in a jar of Minerallac 59625J?
One hundred per jar. The jar packaging keeps them together on the truck or at the bench so you can pull one at a time, which suits an MRO crib or a contractor stocking a common transition size rather than buying singles.
6) Do I need a special tool to install this reducing coupling?
No. It threads directly onto standard rod or bolt ends, and the hexagonal body takes an ordinary wrench or socket. Nothing beyond that is needed to make the connection.
7) What is the Minerallac part number and where is it made?
Part number 59625J, from Minerallac, made in Taiwan. The finish shows as silver zinc plating, which is how you tell it apart on the shelf from a plain or galvanized coupling.
How fast can I get the Minerallac 59625J delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Minerallac 59625J come with a warranty?
Absolutely. The Minerallac 59625J is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Minerallac 59625J?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Minerallac 59625J from ZenSupply?
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