Minerallac 57848J 1/2 x 3" Hex Head Lag Screw, Zinc Plated
The Minerallac 57848J is a 1/2 x 3" hex head lag screw finished in zinc plating, engineered for secure mechanical fastening in electrical and general construction applications. Featuring a hex-drive head for high-torque driving with a standard wrench or socket, this lag screw is built for durable, long-term holding power in wood and framing substrates. The zinc-plated finish provides corrosion resistance, helping the fastener maintain integrity in a variety of installation environments. Electrical contractors and installers rely on fasteners like the 57848J to securely anchor conduit supports, straps, boxes, and other mounting hardware to wood structures and backing.
Key Features
- Trade Size: 1/2 x 3" dimension provides a substantial diameter and length for demanding fastening applications.
- Hex Head Design: Hex head allows for driving with a wrench or socket, delivering higher torque and a more secure, controlled installation than slotted or Phillips heads.
- Zinc Plated Finish: Zinc plating offers corrosion resistance, helping protect the fastener from rust and extending service life.
- Lag Screw Construction: Coarse threading is designed to bite into wood and similar substrates, providing strong, reliable holding power for mounted hardware.
- Versatile Application: Suitable for anchoring conduit supports, mounting brackets, straps, and other electrical or structural hardware to wood framing and backing.
- Professional-Grade Fastener: Designed to meet the demands of commercial and industrial electrical installation work where dependable, code-compliant fastening is required.
Technical Specifications
- Product Type: Lag Screw
- Size: 1/2 x 3"
- Head Style: Hex Head
- Finish: Zinc Plated
- Brand: Minerallac
- Model: 57848J
Typical Applications
- Mounting Conduit Straps and Supports to Wood Framing
- Securing Electrical Boxes and Brackets
- General Electrical Mounting Hardware Installation
- Commercial and Industrial Electrical Installations
- Renovation and New Construction Fastening
Why Minerallac?
Minerallac fasteners like the 57848J hex head lag screw are built to deliver dependable, corrosion-resistant performance for professional electrical and construction installations. The zinc-plated finish and hex-drive head combine to provide a fastener that installs securely and holds up over time, supporting reliable code-compliant mounting throughout commercial and industrial projects.
Manufacturer Resources
Product Specs
- list_batch:
- MIN-20260924
- Product Type:
- Screw
- Product Finish:
- Zinc Plated
- Configuration:
- Hex Head
- Department:
- Electrical
- Product Subgroup:
- Electrical Fasteners
- Product Material:
- Steel
- Product Size:
- 3"
- Product Group:
- Hangers, Supports & Fasteners
- Country of Origin:
- China
- Product Length:
- 3 in
Minerallac 57848J – Frequently Asked Questions
1) Will a 1/2 x 3 inch lag screw hold a conduit strap into wood studs?
That is exactly what the Minerallac 57848J is built for. It is a 1/2 inch diameter, 3 inch long steel lag screw with coarse threading that bites into wood framing and backing, so it holds conduit straps, hangers, boxes and brackets on studs or wood blocking. Three inches of length gives you good penetration past drywall or sheathing into solid framing.
2) Do I need to pre-drill for a 1/2 inch lag screw?
Yes. A 1/2 inch diameter lag this size needs a pilot hole in wood, or you risk splitting the framing and snapping the screw before it seats. Drill a clearance hole through the part being fastened and a smaller pilot for the threaded shank in the receiving member. The 57848J is a wood lag screw, not a concrete or masonry anchor.
3) Can I use the Minerallac 57848J in concrete or block?
No. This is a wood lag screw with coarse threads meant for wood framing and backing. Into concrete, block or brick you need a masonry anchor, or a lag shield or expansion sleeve sized for a 1/2 inch lag. Driving it straight into masonry will not hold.
4) Can the Minerallac 57848J lag screw be used outdoors or in damp locations?
The 57848J carries a zinc-plated finish, which gives corrosion resistance for general indoor and sheltered use and damp interior conditions. Zinc plating is not the same as hot-dip galvanizing or stainless, so for direct, continuous weather exposure or coastal environments a heavier coating is the better call.
5) What size wrench or socket drives this hex head lag screw?
The 57848J has a hex head, so it drives with a standard wrench, socket and impact, not a screwdriver bit. On a 1/2 inch diameter lag, that is typically a 3/4 inch hex across the flats. The hex drive is what lets you put real torque into it without camming out.
6) How is the Minerallac 57848J lag screw packaged for job site ordering?
The 57848J ships 100 pieces to a pack, one size only at 1/2 x 3 inch. That quantity suits a crew running a floor of conduit supports; if you only need a handful for a single mount, you are still buying the full box.
How fast can I get the Minerallac 57848J 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 57848J come with a warranty?
Absolutely. The Minerallac 57848J 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 57848J?
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