Minerallac 53006J 1/4-20 x 3/8...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$6.85
Minerallac 53006J 1/4-20 x 3/8" Round Head Machine Screws, Zinc-Plated Steel, 100-Pack

Minerallac 53006J 1/4-20 x 3/8" Round Head Machine Screws, Zinc-Plated Steel, 100-Pack

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Model: 53006J

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

$6.85
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Minerallac 53006J 1/4-20 x 3/8" Round Head Machine Screws, Zinc-Plated Steel, 100-Pack

The Minerallac 53006J is a jar pack of 100 machine screws sized 1/4-20 x 3/8", featuring a round head with a combo Phillips/Slotted drive for maximum installation flexibility. Constructed from zinc-plated steel, these screws are engineered to thread into a pre-tapped hole or secure with a nut, making them a versatile choice for electrical, mechanical, and general assembly work. Supplied in a convenient jar for organized storage and easy access on the jobsite or in the shop, this pack is a practical stock item for electricians, contractors, and maintenance technicians who need reliable, code-standard fasteners on hand year-round.

Key Features

  • Trade Size: 1/4-20 thread with a 3/8" product length for compact fastening applications.
  • Durable Construction: Steel body with a zinc-plated finish for corrosion resistance and a clean silver head color.
  • Combo Drive: Phillips/Slotted combination drive (driver size #3) accommodates multiple screwdriver types for faster installation.
  • Round Head Design: Head diameter of 0.472" and head height of 0.175" provide a low-profile, finished appearance.
  • External Threading: 2A external threads, thread size 20, designed to engage a pre-tapped hole or be paired with a nut.
  • Bulk Jar Packaging: Supplied 100 per jar for convenient storage, inventory control, and repeat use across multiple jobs.

Technical Specifications

  • Country Of Origin: China
  • Drive Type: Phillips/Slotted Combo
  • Driver Size: #3
  • Head Color: Silver
  • Head Diameter: 0.472
  • Head Height: 0.175
  • Product Length: 3/8 in
  • Product Material: Steel
  • Product Size: 1/4"-20
  • Thread Size: 20
  • Thread Type: 2A External Threads

Typical Applications

  • Securing Electrical Panels and Enclosures
  • General Electrical and Mechanical Assembly
  • Fastening into Pre-Tapped Holes or with Nuts
  • Commercial and Industrial Maintenance Repairs
  • Panelboard and Equipment Hardware Replacement

Why Minerallac?

Minerallac machine screws are built from zinc-plated steel for reliable corrosion resistance and long-term performance in demanding electrical and mechanical environments. The combo Phillips/Slotted drive design ensures compatibility with common tools already on the truck, reducing downtime and simplifying installation. Packaged 100 per jar, the 53006J is a dependable, ready-to-use fastener solution for professionals who need consistent quality and easy inventory management on every job, whether stocking a service truck or replenishing a panel-shop parts bin.

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Manufacturer Resources

Product Specs

Head Diameter:
0.472
Country Of Origin:
China
Product Subgroup:
Machine Screws
Head Type:
Round Head
Department:
Electrical
Driver Size:
#3
Head Height:
0.175
Product Size:
1/4"-20
Product Type:
Machine Screw
Thread Size:
20
Product Finish:
Zinc Plated
Drive Type:
Phillips/Slotted Combo
Thread Type:
2A External Threads
Product Material:
Steel
Head Color:
Silver

Minerallac 53006J – Frequently Asked Questions

1) What lengths do the Minerallac 1/4-20 round head machine screws come in?
Two lengths: 3/8 inch (part 53006J) and 1/2 inch (part 53008J). Both are 1/4-20 thread, round head, zinc-plated steel, and both ship 100 per jar. Pick the 3/8 inch for thin panel sheet metal into a tapped hole, and the 1/2 inch when you need extra thread engagement or are stacking a washer and nut behind the work.
2) Will these screws thread into a panel without a nut?
Yes, provided the hole is already tapped 1/4-20. These are 2A external thread machine screws, so they are cut to mate with a tapped hole or a standard 1/4-20 nut. They do not cut their own thread, so on untapped sheet metal you either tap it first or back it with a nut. That is the usual case on panelboard covers and enclosure hardware replacement.
3) Can I use these to replace missing 1/4-20 hardware on an existing panelboard?
That is one of the intended uses, panelboard and equipment hardware replacement. Match on three things before you pull one out of the jar: the existing thread is 1/4-20, the grip you need is covered by 3/8 or 1/2 inch, and the old head was a raised round rather than countersunk. If all three line up, these drop in and the zinc-plated silver head matches typical factory fasteners.
4) Do I need a Phillips or a flat-blade driver for these 1/4-20 machine screws?
Either works. The head is a Phillips/slotted combo, so a #3 Phillips bit or a wide flat blade both drive it. That is why these get stocked on a service truck, there is no dedicated bit to hunt for. Note the #3 Phillips, not the #2 most people reach for first, a #2 will cam out of a 1/4-20 head.
5) Are round head machine screws the right choice, or should I use a flat head for a panel cover?
Round head sits on top of the surface, it does not sink. If your panel or bracket is countersunk and the fastener has to finish flush, a round head is wrong and you want a flat head instead. Use these where the hole is a plain drilled or tapped hole and a raised 0.175 inch high head is fine, enclosure covers, brackets, and general electrical and mechanical assembly.
6) Is zinc-plated steel good enough for outdoor or damp electrical work?
Zinc plating on a steel body gives corrosion resistance for indoor and sheltered work, panel shops, mechanical rooms, and general industrial maintenance. It is not stainless. For sustained wet exposure, coastal air, or a washdown area, specify a stainless 1/4-20 machine screw instead. The plating also gives the silver head color if you are matching existing hardware in a panel.
7) How are these packaged for a parts bin or truck stock?
100 screws per jar, one size per jar. The jar keeps them separated from loose bin hardware and is easy to label for inventory, which is why maintenance shops and electrical contractors buy them this way rather than by the handful. If you carry both lengths, that is two jars, 53006J for 3/8 inch and 53008J for 1/2 inch.
How fast can I get the Minerallac 53006J 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 53006J come with a warranty?
Absolutely. The Minerallac 53006J 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 53006J?
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 53006J from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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