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CONFAST DIS 1/2" 316 Stainless Steel Drop-In Anchor
The CONFAST DIS 1/2" 316 Stainless Steel Drop-In Anchor is engineered for dependable, long-term concrete fastening in demanding commercial, industrial, and outdoor settings. Constructed from 316 stainless steel, this drop-in anchor delivers strong resistance to rust and corrosion, making it well suited for exterior, wet, coastal, or otherwise corrosive environments where standard carbon-steel anchors would fail prematurely. Sized for 1/2" installations and classified as a Concrete Anchor, it is sold by the box, with the box quantity clearly shown for each individual size to simplify bulk ordering and jobsite planning. This anchor is designed to provide secure, flush, load-bearing connection points set directly into cured concrete substrates, giving contractors a reliable base for attaching fixtures and hardware.
Key Features
- 316 Stainless Steel Construction: Provides superior corrosion resistance compared to standard carbon steel or zinc-plated alternatives, making it well suited for exterior, marine, coastal, or otherwise corrosive installation environments.
- 1/2" Anchor Size: Sized for 1/2" concrete drop-in anchor applications, allowing use with standard fastening hardware designed for this bolt diameter.
- Drop-In Anchor Design: Internally threaded, flush-mount drop-in style anchor construction allows for a clean, low-profile, secure connection point once properly set into the concrete substrate.
- Sold by the Box: Packaged and sold by the box, with box quantity clearly shown for each size, streamlining bulk purchasing, cost estimating, and jobsite inventory planning for contractors.
- Concrete Anchor Application: Classified as a Concrete Anchor, suitable for anchoring fixtures, equipment, railings, and structural hardware directly into concrete floors, walls, and ceilings.
- Corrosion-Resistant Long-Term Performance: The 316 stainless steel alloy helps maintain holding strength and appearance over time, reducing the risk of rust staining or anchor failure in exposed installations.
Technical Specifications
- Product Type: Concrete Anchor
- Country of Origin: China
Typical Applications
- Commercial Construction Projects
- Industrial Facilities and Warehouses
- Concrete Structural Fastening
- Renovation and Retrofit Projects
- Municipal and Infrastructure Installations
- Equipment and Fixture Mounting
- Outdoor and Coastal Installations
Why CONFAST DIS Anchors?
CONFAST drop-in anchors are built from 316 stainless steel for long-term corrosion resistance in demanding commercial, industrial, and outdoor concrete applications. Convenient by-the-box packaging with clearly marked box quantities makes it easy for contractors and facility managers to plan material needs accurately for any size job. Choose the CONFAST DIS 1/2" 316 Stainless Steel Drop-In Anchor for a dependable, professional-grade concrete anchoring solution built to perform in corrosive and high-exposure environments.
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 | 820274000465 |
| 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 | 820274000472 |
| 3/4" (Box of 25) | 5008 | 1" | 25 | 3/4" | 1-3/8" | 5" | 3-3/16" | 3/4" | 1-1/8" | 10" | 1" | 3/4" - 10 | 820274000489 |
| 3/8" (Box of 50) | 1170 | 1/2" | 50 | 3/8" | 5/8" | 2-1/2" | 1-9/16" | 3/8" | 9/16" | 5" | 1/2" | 3/8" - 16 | 820274000496 |
| 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" | — | 820274000502 |
Manufacturer Resources
Product Specs
- Product Type:
- Drop-In Anchor
- Product Brand:
- CONFAST
- Product Material:
- 316 Stainless Steel
- Country of Origin:
- China
- Department:
- Fasteners
- Product Group:
- Concrete Anchors
- Product Subgroup:
- Concrete Anchors
- Location Rating:
- Submerged/Chemicals
- Base Material:
- Concrete only
- Product Attribute:
- Female
CONFAST DIS31638 – Frequently Asked Questions
1) What sizes do CONFAST 316 stainless drop-in anchors come in, and how many are in a box?
CONFAST DIS drop-in anchors come in five diameters, each sold by the box: 1/4 inch in boxes of 100, 3/8 inch in boxes of 50, 1/2 inch in boxes of 50, 5/8 inch in boxes of 25, and 3/4 inch in boxes of 25. The box quantity drops as the diameter goes up, so plan the count per opening or baseplate before you order a single box for a large layout.
2) Can I use these drop-in anchors outdoors or near salt water?
That is what the 316 stainless version is for. The anchor body is 316 stainless steel, which holds up in exterior, wet, coastal and otherwise corrosive conditions where a zinc-plated carbon steel drop-in would rust out and stain the concrete. If the install is indoors and dry, you are paying for corrosion resistance you will not use.
3) Does the bolt come with the CONFAST drop-in anchor?
No. A drop-in anchor is the internally threaded shell only. You supply the threaded rod or machine bolt that screws into it, and the thread size matches the anchor size you order, so a 1/2 inch anchor takes 1/2 inch threaded hardware. For an exterior or coastal job, match the bolt to the shell and use 316 stainless fasteners as well, or you will get galvanic corrosion and rust staining at the surface.
4) Will a drop-in anchor work in block, brick, or hollow-core slab?
These are specified for cured solid concrete. A drop-in anchor works by expanding a shell against the walls of a drilled hole as the internal cone is driven down, so it needs solid, dense base material on all sides. Hollow block, brick veneer and hollow-core plank do not give it that. For those substrates use a sleeve or toggle-style anchor rated for hollow base material instead.
5) Can I mount something to the ceiling or an overhead slab with these?
Yes, overhead is a normal use for drop-in anchors, and the description covers concrete floors, walls and ceilings. The flush, internally threaded design is what makes it work overhead: the shell sits at the surface, you thread rod up into it, and you can remove and re-hang the fixture later without touching the anchor. That is the usual choice for hanging conduit trapeze, strut, and pipe supports.
6) Why pick a drop-in anchor over a wedge anchor for a concrete slab?
The difference is whether the fastener has to be removable. A drop-in sets flush in the hole and leaves an internal thread, so the bolt comes out and goes back in whenever you service the equipment, and nothing sticks up out of the floor when the fixture is off. A wedge anchor leaves a stud permanently projecting from the concrete. For machine bases, railings, and anything that gets unbolted, the flush drop-in is the cleaner answer.
7) Do I need a setting tool to install these CONFAST drop-in anchors?
Yes, and it is not included. A drop-in is set by dropping it in a clean, correctly drilled hole and driving the internal expander plug down with a matching setting punch until the tool shoulders on the anchor lip. Each diameter takes its own setting tool, so if you are buying more than one size, count on a tool per size. Skipping the tool and hammering the bolt will not expand the shell properly.
8) Which size drop-in anchor should I use for mounting equipment or railing posts?
Size off the bolt the fixture calls for, not the hole in the base plate. Railing posts and light equipment bases commonly land on 3/8 or 1/2 inch, which come in boxes of 50, while heavier machine bases and structural connections move to 5/8 or 3/4 inch, sold in boxes of 25. The 1/4 inch, boxed 100, suits light fixture and conduit strap work.
9) Is 316 stainless worth it over 304 for a concrete anchor?
On anything exposed to chlorides, yes. The CONFAST DIS anchor is 316 stainless, the alloy that resists pitting from salt spray, pool chemicals and de-icing salt better than 304. For an interior mechanical room, that margin does not buy you anything; for a coastal balcony, a wastewater plant, or a parking deck that gets salted, it is the difference between an anchor that lasts and rust bleed down the concrete face.
How fast can I get the CONFAST DIS31638 delivered?
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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 DIS31638 come with a warranty?
Absolutely. The CONFAST DIS31638 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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