Which drill bit should I use?

Use a carbide masonry bit sized to the screw diameter; depth should exceed embedment by ~6–12 mm.

Can I drive into brick or block?

Yes—choose the pilot size for the substrate density; aim for webbing in hollow block.

What driver is required?

Phillips (bit included). Maintain firm axial pressure to avoid cam-out.

What can I mount with these?

Brackets, clips, conduit straps, fixtures, baseplates, and general hardware.

Recommended embedment depth?

Typically 25–40 mm in solid concrete; adjust for brick/block.

Can I reuse the same hole?

Not recommended—threads may degrade; use a new hole or larger screw with new pilot.

Should I clean the hole first?

Yes—remove dust for maximum thread engagement.

Will they crack concrete?

Use correct pilot size, maintain edge distance, and do not overtighten.

Yes—coated for corrosion resistance; seal penetrations per best practice.

Impact driver compatible?

Yes—controlled impacts only; stop when the head seats flush.

If the hole strips, what now?

Drill deeper for a longer screw or re-drill with the next pilot size for an oversized screw.

Use in mortar joints?

Yes, but strength depends on mortar quality; the brick body often yields higher pull-out.

Spacing/edge distance?

Keep ≥10× diameter from edges and adequate spacing between fasteners.

Carbon steel is magnetic; the included bit can be used in magnetic holders.

100 screws, 1 Phillips bit, and an auxiliary adapter head as supplied.

How do returns/shipping work?

Inspect on arrival and contact us for issues. See store policy for timelines and conditions.

Conversions Tech SOFT-100 PCS 3/16 Inch X1-1/4 Concrete Screw Anchor Blue Flat Heads For Anchoring To Masonry, Block Or Brick Stucco

Conversions Tech As Shown SOFT-100 PCS 3/16 Inch X1-1/4 Concrete Screw Anchor Blue Flat Heads For Anchoring To Masonry, Block Or Brick Stucco

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Conversions Tech

SOFT-100 PCS 3/16 Inch X1-1/4 Concrete Screw Anchor Blue Flat Heads For Anchoring To Masonry, Block Or Brick Stucco

Name: SOFT-100 PCS 3/16 Inch X1-1/4 Concrete Screw Anchor Blue Flat Heads For Anchoring To Masonry, Block Or Brick Stucco
Brand: Conversions Tech
SKU: DUP-14:10#As Shown
Price: 17.40 USD
Availability: OutOfStock

Sale price $17.40

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SKU: DUP-14:10#As Shown

Color: As Shown

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Diamond-Tip Self-Tapping Concrete Screws — Flat Phillips, Corrosion-Resistant | 100-Piece Kit + Bit

Heavy-duty concrete/brick/block fasteners featuring a sharp diamond tip for quick starts and a super-strength thread profile for high pull-out. The flat Phillips countersunk head sits flush for a clean finish, and a corrosion-resistant coating delivers long-term durability indoors and out. Ideal for pros and DIY installs—no separate anchor required. Blow out dust before driving. Do not overtighten—stop when the head seats flush. For exterior installs, seal penetrations per local practice.

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FAQs

Do these screws require an anchor?

No—these are self-tapping masonry screws and cut their own threads in the pilot hole.

Is a pilot hole necessary with a diamond tip?

The diamond tip helps start the hole, but a masonry pilot is recommended for best holding power and reduced cracking.

What drill bit should I use for the pilot?

Use a carbide masonry bit sized to the screw diameter per typical masonry screw guidance; depth should exceed planned embedment by ~6–12 mm.

Can I drive directly into brick or block?

Yes—choose a pilot size suitable for the substrate density. For hollow block, aim for webbing and use appropriate embedment.

What driver do these use?

Flat Phillips head (bit included). Keep firm axial pressure to prevent cam-out.

Are they corrosion-resistant?

Yes—the protective coating helps resist rust. For marine/coastal environments, consider stainless or additional sealing.

Will the head sit flush?

Yes—the flat countersunk head is designed to seat flush in the fixture or a countersunk recess.

What applications are they good for?

Mounting brackets, clips, conduit straps, light fixtures, baseplates, sill angles, and general hardware into concrete/brick/block.

How deep should I embed the screw?

Typical embedment is 25–40 mm in solid concrete; adjust for brick/block density and screw length. Avoid re-using the same hole.

Can I remove and re-insert the same screw?

Threads in concrete may degrade if reused. For best results, use a new hole or an oversized screw with a fresh pilot.

Do I need to clean the pilot hole?

Yes—blow or vacuum out dust to maximize thread engagement and holding strength.

Will these crack the concrete?

Use the correct pilot size, maintain edge distances (>50 mm where possible), and avoid overtightening to minimize cracking.

Are these suitable for outdoor use?

Yes—the coating improves weather resistance. Seal penetrations and consider additional corrosion protection in harsh environments.

Can I drive with an impact driver?

Yes—short, controlled impacts are acceptable. Do not over-torque; stop once the head seats flush.

What if the hole strips?

Drill deeper and use a longer screw, or re-drill with the next pilot size and use an oversized screw.

Do these work in mortar joints?

Yes, but strength depends on mortar quality. Solid base material (brick body or concrete) provides higher pull-out.

Any spacing or edge-distance rules?

Maintain adequate edge distance (≥10× screw diameter where practical) and spacing to reduce breakout and splitting.

Can I countersink the fixture?

Yes—use a countersink in the fixture material to allow the flat head to sit fully flush.

Are they magnetic?

Carbon steel is ferromagnetic. The included Phillips bit will magnetize screws in magnetic holders.

What’s included in the kit?

100 screws, 1 Phillips driver bit, and an auxiliary head/adapter (as supplied). Other accessories not included.

Return & shipping notes?

Inspect on arrival and contact us if incorrect or damaged. See our store policy for timelines and conditions on returns.

Why Pros Buy Direct from Conversions Tech

Engineered in the USA. Our U.S.-based engineering team designs and specifies our core product lines, and every product we carry — designed in-house or built to our exact specifications by certified partner factories — is quality-verified before it ships. UL/CSA listed where required, NEC compliant.

Cross-reference savings. Direct equivalents to Burndy, Hubbell, and other OEM part numbers at up to 30% less — same specs, same certifications, without the big-brand markup.

Real technical support. Need a torque spec, die reference, or an OEM quote? You’ll speak directly with the Conversions Tech engineering desk — not a script reader — for instant answers, custom kitting, and private-label options.

Fast US fulfillment. Orders in by 2PM ET ship same day from our US warehouse, nationwide ground and expedited.