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CONFAST CSHS 410 Stainless Steel Hex Washer Head Concrete Screw with Drill Bit (Box of 50)
CONFAST CSHS Hex Washer Head Concrete Screws are engineered from 410 stainless steel for reliable, corrosion-resistant anchoring into concrete and masonry substrates. Each 3/16" x 1-1/4" screw ships with a matching drill bit, giving installers a complete, ready-to-use fastening solution without sourcing a separate bit. Packaged in convenient boxes of 50, this masonry screw is built for contractors and facility teams who need dependable, repeatable results on every job. CONFAST keeps every CSHS screw in stock for same-day shipping, so crews can order direct and keep projects moving without waiting on backorders.
Key Features
- Screw Dimensions: Precision 3/16" x 1-1/4" sizing designed for accurate, secure engagement in concrete and masonry applications.
- 410 Stainless Steel Construction: Corrosion-resistant stainless steel body stands up to demanding environments and long-term outdoor or high-moisture exposure.
- Hex Washer Head Design: Wide hex washer head allows fast driving with a standard nut driver or wrench while distributing load evenly across the fastened material.
- Matching Drill Bit Included: Each box includes a properly sized drill bit matched to the screw diameter, eliminating guesswork and reducing prep time on the jobsite.
- Bulk Box Packaging: Sold in a box of 50 screws, keeping crews stocked for larger installation runs without frequent reordering.
- Masonry Screw Versatility: Suitable for anchoring fixtures, brackets, conduit, and hardware directly into concrete, block, and brick substrates.
- Fast Availability: Every CSHS screw is stocked and ready to ship the same day, minimizing lead time for time-sensitive installation schedules.
- Direct Sourcing Value: Purchased direct from CONFAST for straightforward, cost-effective bulk pricing on commercial-grade masonry fasteners.
Technical Specifications
- Country of Origin: Taiwan
- Box Quantity: 50
Typical Applications
- Commercial Construction Projects
- Masonry and Concrete Anchoring
- Electrical and HVAC Mounting Installations
- Structural Framing and Bracket Attachments
- Industrial and Warehouse Facilities
- Renovation and Retrofit Applications
- General Contractor and DIY Projects
Why CONFAST CSHS?
CONFAST concrete screws are built from 410 stainless steel and sized to precise 3/16" x 1-1/4" tolerances, delivering consistent holding performance in masonry substrates. With a matching drill bit included in every box of 50 and stock kept on hand for same-day shipping, the CSHS screw is engineered for professionals who need dependable, ready-to-install fastening hardware for demanding commercial applications.
Specifications
- Box Qty: 50
- Min. Embedment: 1"
- Thread Type: Hi-Lo
Specifications by Size
| Size | Pull-Out (lbs.) | Shear (lbs.) | Bit Size | Max. Fixture Thickness | Min. Edge Distance | Min. Fixture Hole Ø (Hole Spotted) | Min. Fixture Hole Ø (In Place) | Min. Spacing | Thread Length | UPC |
|---|---|---|---|---|---|---|---|---|---|---|
| 3/16" x 1-1/4" | 360 | 432 | 5/32" | 1/4" | 2-1/4" | 1/4" | 1/4" | 3" | 1-1/4" | 0820274004562 |
| 3/16" x 1-3/4" | 360 | 432 | 5/32" | 3/4" | 2-1/4" | 1/4" | 1/4" | 3" | 1-3/4" | 0820274004579 |
| 1/4" x 1-1/4" | 449 | 540 | 3/16" | 1/4" | 3" | 5/16" | 5/16" | 4" | 1-1/4" | 0820274004555 |
| 1/4" x 1-3/4" | 449 | 540 | 3/16" | 3/4" | 3" | 5/16" | 5/16" | 4" | 1-3/4" | 0820274004517 |
| 1/4" x 2-1/4" | 449 | 540 | 3/16" | 1-1/4" | 3" | 5/16" | 5/16" | 4" | 1-3/4" | 0820274004524 |
| 1/4" x 2-3/4" | 449 | 540 | 3/16" | 1-3/4" | 3" | 5/16" | 5/16" | 4" | 1-3/4" | 0820274004531 |
| 1/4" x 3-1/4" | 449 | 540 | 3/16" | 2-1/4" | 3" | 5/16" | 5/16" | 4" | 1-3/4" | 0820274004548 |
Manufacturer Resources
Product Specs
- Product Type:
- Hex Head Concrete Screw
- Product Brand:
- CONFAST
- Product Material:
- 410 Stainless Steel
- Country of Origin:
- Taiwan
- Box Quantity:
- 50
- Department:
- Fasteners
- Product Group:
- Concrete Anchors
- Product Subgroup:
- Concrete Screws
- Location Rating:
- Moist
- Base Material:
- Concrete, Block, and Brick
- Product Attribute:
- Male (threaded stud)
CONFAST CSHS316114 – Frequently Asked Questions
1) What size drill bit do I need for CONFAST CSHS hex head concrete screws?
The matching bit ships in the box, so you don't have to source one. The 3/16 inch diameter screws use a 5/32 inch carbide bit, and the 1/4 inch diameter screws use a 3/16 inch bit. Drill the hole at least 1/4 inch deeper than the screw will embed so cuttings have somewhere to go.
2) How do I pick the right length CONFAST concrete screw for the bracket I'm mounting?
Work from the maximum fixture thickness, which is the screw length minus the minimum 1 inch embedment. In the 1/4 inch diameter: 1-1/4 inch handles up to 1/4 inch of fixture, 1-3/4 inch up to 3/4 inch, 2-1/4 inch up to 1-1/4 inch, 2-3/4 inch up to 1-3/4 inch, and 3-1/4 inch up to 2-1/4 inch. In 3/16 inch diameter: 1-1/4 inch takes 1/4 inch of fixture and 1-3/4 inch takes 3/4 inch. If your material is thicker than that, step up a length.
3) Are these concrete screws OK outdoors or in a damp mechanical room?
Yes. The CSHS screw body is 410 stainless steel and it carries a moist location rating, so wash-down areas, damp basements, parking structures and exterior mounting are within scope. 410 is a martensitic stainless, so it resists corrosion far better than plain blue-coated carbon steel masonry screws but is not the choice for direct saltwater immersion.
4) How close to the edge of a slab can I set these masonry screws, and how far apart?
Minimum edge distance is 2-1/4 inches for the 3/16 inch screws and 3 inches for the 1/4 inch screws. Minimum spacing between anchors is 3 inches for 3/16 inch and 4 inches for 1/4 inch. Going tighter than that risks spalling the concrete and losing the values you designed to.
5) Will CONFAST 410 stainless concrete screws hold in block and brick, or only poured concrete?
Concrete, block, and brick are all approved base materials for the CSHS screw. Keep in mind that published pull-out and shear values are based on solid concrete; in hollow block, land the screw in the web rather than the face shell for reliable holding.
6) How much load will a 1/4 inch CONFAST hex head concrete screw carry?
Published ultimate values for the 1/4 inch diameter CSHS screw are 449 lbs pull-out and 540 lbs shear. The 3/16 inch diameter is rated 360 lbs pull-out and 432 lbs shear. These are ultimate test values, not working loads, so apply your own safety factor per the job spec.
7) What size clearance hole do I need in the bracket or channel I'm fastening down?
For the 3/16 inch diameter screw, the fixture hole needs to be at least 1/4 inch, whether you spot the hole through the fixture or drill with the fixture already in place. For the 1/4 inch diameter, it is 5/16 inch in both cases. Anything tighter and the hi-lo thread will bind on the fixture instead of pulling it down.
8) Can I reuse the hole if a CONFAST concrete screw strips or has to come out?
The screw backs out with the same nut driver, but do not re-drive into the same hole. The hi-lo thread cuts its own mating thread in the masonry on first install, and a second pass into a worn hole will not develop the rated 449 lb pull-out on the 1/4 inch or 360 lb on the 3/16 inch. Move over at least the minimum spacing, 4 inches for 1/4 inch screws or 3 inches for 3/16 inch, and drill fresh.
9) Do I need a hammer drill and a special driver bit to install these?
A hammer drill with a carbide bit cuts the hole, then the screw drives with a standard nut driver or socket on the hex washer head, no anchor, shield or setting tool required. The wide washer face spreads the clamp load across the fixture, which is why these are common for conduit straps, strut and electrical boxes.
10) How many CONFAST CSHS screws come in a box?
Each box holds 50 screws plus one matched drill bit. Sizes are ordered individually: 3/16 inch in 1-1/4 and 1-3/4 inch lengths, and 1/4 inch in 1-1/4, 1-3/4, 2-1/4, 2-3/4 and 3-1/4 inch lengths. If a crew is running multiple lengths on one job, each length is a separate box.
How fast can I get the CONFAST CSHS316114 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 CSHS316114 come with a warranty?
Absolutely. The CONFAST CSHS316114 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 CSHS316114?
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