Minerallac 3/8 x 3" Lag Screw,...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$200.00
Minerallac 3/8 x 3" Lag Screw, Hex Head, Zinc Plated

Minerallac 3/8 x 3" Lag Screw, Hex Head, Zinc Plated

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Model: 57448

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

$200.00
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Minerallac 57448BFG 3/8 x 3" Hex Head Lag Screw, Zinc Plated, 1000-Pack

The Minerallac 57448BFG is a 3/8 x 3" hex head lag screw with a zinc plated finish, supplied in a bulk 1000 pack for high-volume electrical, mechanical, and general construction fastening applications. Lag screws like this one are used to secure heavy-duty electrical hardware, mounting brackets, conduit supports, and other equipment to wood framing members where a strong, threaded connection is required. The hex head design allows for fast, efficient driving with a standard wrench or socket, making the 57448BFG a practical choice for contractors and installers who need consistent, reliable fasteners on the job in quantity. Because it ships in a bulk 1000-pack, this Minerallac fastener is well suited for electrical contractors, wholesale distributors, and maintenance departments that regularly consume large volumes of a single lag screw size and want to avoid frequent reordering or running short mid-project.

Key Features

  • Trade Size: 3/8 x 3" dimension provides a substantial shank diameter and length suited for fastening into wood framing and structural members.
  • Hex Head Design: The hex head allows for quick installation and removal using a wrench or socket driver, reducing installation time versus slotted or square-drive heads.
  • Zinc Plated Finish: The zinc plated coating helps resist corrosion and surface oxidation, extending the service life of the fastener in typical indoor and covered outdoor installations.
  • Lag Screw Threading: Coarse threading is designed to bite into wood and provide strong holding power for mounting electrical hardware, brackets, and supports.
  • Bulk 1000-Pack: Packaged in quantities of 1000, this option is well suited for electrical contractors, distributors, and maintenance operations that need a large, consistent supply of a single fastener size on hand.
  • Versatile Application: Suitable for general electrical hardware installation tasks where a hex head lag screw is specified for securing equipment to wood substrates.
  • Efficient Bulk Purchasing: Buying in a 1000-pack format reduces per-unit handling and reordering frequency for high-volume installation and maintenance work.

Technical Specifications

  • Product Type: Hardware
  • Size: 3/8 x 3"
  • Head Style: Hex Head
  • Finish: Zinc Plated
  • Pack Quantity: 1000
  • Country Of Origin: China

Typical Applications

  • Mounting Electrical Equipment and Hardware to Wood Framing
  • Securing Conduit Supports and Brackets
  • General Construction and Renovation Fastening
  • Electrical Contractor Bulk Fastener Stock
  • Maintenance and Repair Facility Hardware Supply

Why Minerallac?

Minerallac fasteners are built to provide dependable, corrosion-resistant performance for electrical and construction hardware applications. The zinc plated finish on the 57448BFG hex head lag screw offers added protection against oxidation, while the bulk 1000-pack format gives contractors and distributors an efficient way to keep a consistent, high-volume supply of this fastener size on hand for ongoing installation and maintenance work. For teams that need a reliable, code-compliant fastener for securing electrical hardware to wood framing at scale, the Minerallac 57448BFG offers a practical, ready-to-stock solution.

Manufacturer Resources

Product Specs

Department:
Electrical
Product Type:
Screw
Product Subgroup:
Electrical Fasteners
Product Group:
Hangers, Supports & Fasteners

Minerallac 57448 – Frequently Asked Questions

1) Will a 3/8 x 3 inch lag screw work in concrete or masonry?
No. This is a wood lag screw, threaded to bite into wood framing, and it is not an anchor for concrete, block, or brick. For masonry you need a concrete screw anchor or a shield/expansion anchor sized to the hole, not a lag by itself.
2) What pack sizes does the Minerallac 3/8 x 3 inch lag screw come in?
Two: a 100 pack ordered as part number 57448, and a bulk 1000 pack ordered as 57448BFG. Same screw either way. The 100 pack suits a single job or a service van; the 1000 pack is the stocking quantity for contractors, distributors, and MRO shops that burn through one size repeatedly.
3) Do I need to pre-drill for a 3/8 inch hex lag screw?
Yes, treat it as a pre-drill fastener. A 3/8 inch lag is large enough that driving it dry into framing will split the lumber, especially near an edge or end of a member. Drill a pilot hole for the threaded shank and clear the unthreaded portion, then drive the hex head with a wrench or socket rather than an impact driver bit.
4) Is the zinc plated finish on this Minerallac lag screw OK outdoors?
The zinc plating resists corrosion and surface oxidation for indoor and covered outdoor work, which is what Minerallac states for the 57448. Fully exposed, wet, coastal, or treated-lumber contact is harder service, and for that a hot dip galvanized or stainless lag is the better call.
5) What tool drives the Minerallac 57448BFG lag screw?
A standard wrench or socket. The head is a hex, so a socket on an impact wrench or a ratchet drives it, which is faster than slotted or square drive heads on a repetitive run of mounts. No screwdriver bit involved.
6) Where is the Minerallac 57448 lag screw made?
Country of origin is China. That matters on public and institutional jobs with domestic-sourcing requirements, so if you are bidding work under a Buy American or similar clause, note it before you spec this fastener.
How fast can I get the Minerallac 57448 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 57448 come with a warranty?
Absolutely. The Minerallac 57448 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 57448?
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 57448 from ZenSupply?
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