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CONFAST 1/2" Zinc Plated Drop-In Anchor
The CONFAST Zinc Plated Drop-In Anchor is a concrete anchor engineered for dependable fastening into concrete substrates on commercial and industrial job sites. Constructed with zinc plated material for corrosion resistance, this drop-in anchor is available in a 1/2" size and is sold by the box, with box quantity shown for each size so crews can order the exact amount needed. Each unit is in stock and ships immediately, making it a convenient, cost-effective choice for contractors, distributors, and facility maintenance teams sourcing reliable concrete anchoring hardware for everyday fastening work.
Key Features
- Anchor Size: Available in a 1/2" size Drop-In Anchor configuration sized for standard concrete fastening applications.
- Zinc Plated Construction: Zinc plated finish provides corrosion resistance and long-term durability for anchors set into concrete.
- Sold By The Box: Packaged and sold by the box, with the box quantity clearly shown for each size to simplify bulk ordering and inventory planning.
- Ready to Ship: Carried in stock and ships immediately, helping keep installation schedules and project timelines on track.
- Concrete Anchor Application: Purpose-built as a concrete anchor for secure, load-bearing fastening into concrete substrates in commercial and industrial settings.
- High Quality, Superior Pricing: Positioned as a high-quality drop-in anchor offered at a competitive price point for volume purchasing.
Technical Specifications
- Product Type: Concrete Anchor
- Country of Origin: China
Typical Applications
- Commercial Construction Projects
- Industrial Facility Construction
- Concrete Anchoring and Fastening Applications
- Structural and Load-Bearing Fastening Projects
- Renovation and Retrofit Work
- General Contractor and Facility Maintenance Use
- Distributor and Bulk Hardware Supply
Why CONFAST?
CONFAST concrete anchor products are built with zinc plated construction for reliable corrosion resistance in demanding fastening applications. With in-stock availability and box quantities clearly listed by size, the CONFAST Drop-In Anchor is engineered for straightforward, dependable concrete anchoring on commercial and industrial projects where consistent hardware quality matters.
Specifications
- Bolt Length: Fixture Thickness + Embedment Depth
- Thread Length: 5/8"
Specifications by Size
| Size | Pull-Out (lbs.) | Bit Size | Box Qty | Inside Anchor Ø-Bolt Ø | Internal Thread Length | Min. Edge Distance | Min. Embedment | Min. Fixture Hole Ø (Hole Spotted) | Min. Fixture Hole Ø (In Place) | Min. Spacing | Outside Anchor Ø | Thread Type | UPC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2" (Box of 50) | 2328 | 5/8" | 50 | 1/2" | 13/16" | 3-1/8" | 2" | 1/2" | — | — | 5/8" | 1/2" - 13 | 820274000373 |
| 1/4" (Box of 100) | 704 | 3/8" | 100 | 1/4" | 7/16" | 1-7/8" | 1" | 1/4" | 7/16" | 3-3/4" | 3/8" | 1/4" - 20 | 820274000380 |
| 3/4" (Box of 10) | 5008 | 1" | 10 | 3/4" | 1-3/8" | 5" | 3-3/16" | 3/4" | 1-1/8" | 10" | 1" | 3/4" - 10 | 820274000397 |
| 3/8" (Box of 100) | 1170 | 1/2" | 50 | 3/8" | 5/8" | 2-1/2" | 1-9/16" | 3/8" | 9/16" | 5" | 1/2" | 3/8" - 16 | 820274000403 |
| 5/8" (Box of 25) | 2492 | 7/8" | 25 | 5/8" | 1-3/16" | 4-3/8" | 2-1/2" | 5/8" | 1" | 8-3/4" | 7/8" | — | 820274000410 |
Manufacturer Resources
Product Specs
- Product Type:
- Drop-In Anchor
- Product Brand:
- CONFAST
- Product Material:
- Zinc Plated
- Department:
- Fasteners
- Product Group:
- Concrete Anchors
- Product Subgroup:
- Concrete Anchors
- Location Rating:
- Dry
- Base Material:
- Concrete only
- Product Attribute:
- Female
CONFAST DI14 – Frequently Asked Questions
1) What drill bit size do I need for a CONFAST drop-in anchor?
The bit size is larger than the bolt size, because the hole has to take the anchor body, not the bolt. For the CONFAST zinc plated drop-in anchors: 1/4 inch anchor uses a 3/8 inch bit, 3/8 inch uses 1/2 inch, 1/2 inch uses 5/8 inch, 5/8 inch uses 7/8 inch, and 3/4 inch uses a 1 inch bit. Match those to a carbide hammer-drill bit and drill the hole at least as deep as the minimum embedment.
2) How deep does the hole have to be for a drop-in anchor to hold?
Minimum embedment runs 1 inch for the 1/4 inch anchor, 1-9/16 inches for 3/8 inch, 2 inches for 1/2 inch, 2-1/2 inches for 5/8 inch, and 3-3/16 inches for 3/4 inch. The anchor sets flush with the concrete surface, so the slab has to be thick enough to take that full depth plus a little clearance below for dust.
3) What length bolt do I order to go with these anchors?
Bolt length is fixture thickness plus embedment into the anchor, not slab depth. The internal thread depth caps how far the bolt can go: 7/16 inch on the 1/4 inch anchor, 5/8 inch on 3/8 inch, 13/16 inch on 1/2 inch, 1-3/16 inches on 5/8 inch, and 1-3/8 inches on 3/4 inch. Size the bolt so it fully engages that thread without bottoming out.
4) What thread does a CONFAST drop-in anchor take, and can I use a standard hex bolt?
These are female anchors with standard UNC threads, so any off-the-shelf bolt or threaded rod in the matching size works: 1/4-20, 3/8-16, 1/2-13, and 3/4-10. Thread the bolt in after the anchor is set and expanded.
5) Can I use these anchors in block, brick, or drywall?
No. The CONFAST drop-in anchor is rated for concrete only. Hollow block, brick, and mortar joints will not let the internal expansion cone bear properly, so use a sleeve anchor, tapcon-style screw anchor, or toggle designed for those substrates instead.
6) How close to a slab edge can I set a drop-in anchor?
Minimum edge distance is 1-7/8 inches for the 1/4 inch anchor, 2-1/2 inches for 3/8 inch, 3-1/8 inches for 1/2 inch, 4-3/8 inches for 5/8 inch, and 5 inches for 3/4 inch. Minimum spacing between anchors, where stated, is 3-3/4 inches at 1/4 inch, 5 inches at 3/8 inch, 8-3/4 inches at 5/8 inch, and 10 inches at 3/4 inch. Set closer than that and you risk spalling the concrete and losing the hold.
7) How much load will a 1/2 inch drop-in anchor hold?
Published pull-out values are 704 lbs for 1/4 inch, 1170 lbs for 3/8 inch, 2328 lbs for 1/2 inch, 2492 lbs for 5/8 inch, and 5008 lbs for 3/4 inch. Those are ultimate pull-out figures in concrete, not working loads, so apply your own safety factor per the job's engineering.
8) Are zinc plated drop-in anchors okay outdoors or in a wet area?
The zinc plating on these gives corrosion resistance for interior work, and the anchor carries a dry location rating. For exterior, damp, or chemically exposed concrete, step up to a stainless drop-in anchor rather than zinc plated.
9) How big does the hole in my fixture need to be?
It depends on whether you drill the concrete through the fixture or set the anchors first. Spotting the hole through the fixture, the clearance hole matches the bolt size (1/4, 3/8, 1/2, 5/8, or 3/4 inch). Setting the fixture over anchors already in place needs extra slop: 7/16 inch for 1/4 inch anchors, 9/16 inch for 3/8 inch, 1 inch for 5/8 inch, and 1-1/8 inches for 3/4 inch.
10) Why choose a drop-in anchor over a wedge anchor for hanging equipment from a concrete deck?
A drop-in anchor is internally threaded and sets flush with the concrete, so nothing protrudes and the bolt or threaded rod can be removed and reinstalled later. That makes it the usual pick for overhead rod hangers, pipe and duct supports, and machinery bases that get serviced. A wedge anchor is a one-way stud that sticks out permanently and cannot be swapped without drilling a new hole. Pick the drop-in when you want a reusable female connection in concrete.
11) How many CONFAST drop-in anchors come in a box?
Box quantity varies by size: 100 per box at 1/4 inch, 50 at 3/8 inch, 50 at 1/2 inch, 25 at 5/8 inch, and 10 at 3/4 inch. Each size is sold as a full box, so plan the count against your anchor layout before ordering.
How fast can I get the CONFAST DI14 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 CONFAST DI14 come with a warranty?
Absolutely. The CONFAST DI14 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 CONFAST DI14?
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