The best 12-24 self-tapping screw depends on the head style, length, material, and whether you need a drill-point or thread-cutting design. The Hicarer option is best for bulk structural fastening, while the Small Parts screws suit countersunk or pan-head installations. A 410 stainless steel flat-head set adds installation tools. The Taiss assortment includes #12 screws, but its listed details do not confirm a 12-24 thread, so verify the thread before treating it as a match.
| Product | Best for | Key detail |
|---|---|---|
| Hicarer 12-24 x 1-1/2-inch | Bulk, heavy-duty fastening | 400 galvanized self-drilling screws |
| Small Parts flat head | Shallow countersunk holes | 3/4-inch zinc-plated screw |
| Small Parts pan head | Thread cutting in soft metal | Type 23 point, 1-inch length |
| Taiss assortment | Mixed-size projects | Assorted #8, #10, #12, and #14 |
| 410 stainless flat-head set | Tool-included installation | 100 screws plus Allen key and driver |
Hicarer 12-24 x 1-1/2-Inch Hex Washer Head Screws
This 400-count pack is the strongest match for buyers who need a large quantity of 12-24 screws for metal fastening. Each screw is listed as 1-1/2 inches long and has a hex washer head intended to provide a stable bearing surface and support torque during installation.
The self-drilling design is intended to drill into metal sheets without a separate pre-drilling step. The listing describes high-strength steel with a galvanized silver finish and cites structural framing, HVAC, construction, and manufacturing as possible uses. Choose this option if you need a longer screw and a bulk supply.
Caution: The 1-1/2-inch length may be excessive for thin materials or applications with limited clearance. Confirm the required screw length and substrate before installation.
Small Parts 12-24 Flat-Head Drill-Point Screws
These 3/4-inch steel screws are best for buyers who want a 12-24 fastener that can sit flush in a suitable countersunk opening. The undercut flat head has an 82-degree bearing surface, and the listing specifies a Phillips drive and #3 drill point.
The zinc-plated finish is described as corrosion-resistant. Choose this product over a pan-head screw when the installation calls for a flat top and shallow countersunk hole. The pack contains 50 screws, making it a smaller quantity option than the Hicarer bulk pack.
Caution: The flat head is designed for a countersunk seating surface; it may not be appropriate where a raised head or washer-bearing surface is required.
Small Parts 12-24 Pan-Head Thread-Cutting Screws
This 1-inch, 12-24 screw is best for buyers seeking a thread-cutting point for soft-metal applications. Its Type 23 point has a large cutting surface and chip-clearance design. The listing says this design requires minimal rotating force during installation.
The steel screw has a zinc-plated finish and a Phillips-drive pan head. Choose it when you need a raised, rounded head rather than a flush countersunk finish. The package contains 50 pieces, and the one-inch length is between the shorter Small Parts flat-head screw and the longer Hicarer option.
Caution: The Type 23 point is described for soft metal; do not assume it is suitable for every metal or substrate.
Taiss Mixed-Size Self-Tapping Screw Assortment
This 1,000-piece kit is best for buyers who need several screw sizes for varied repair or assembly work. It lists #8, #10, #12, and #14 sizes, lengths from 1/2 to 2 inches, 410 stainless steel construction, rubber washers, and a portable storage box.
The assortment may be useful for projects involving metal, wood, or plastic, but it is not a confirmed substitute for a 12-24 screw. The listing identifies a #12 size but does not state a 12-24 thread size. Choose it for mixed-size inventory, not when an exact 12-24 thread is essential.
Caution: Confirm the screw’s thread specification and head configuration before purchase if your project requires a 12-24 fastener.
410 Stainless 12-24 Flat-Head Screw Set
This set is best for buyers who want 100 listed 12-24 x 1-inch flat-head screws with installation tools included. The package also includes an Allen key and a 1/4-inch hex-shank S2 steel hex screwdriver. Its flat-head design is intended for an installation where a flush-style head is appropriate.
The screws are made from 410 stainless steel. The product description identifies this material as corrosion- and rust-resistant and notes that it is magnetic. Choose this set if the included tools and one-inch length fit your work.
Caution: The listing describes a hex socket drive, so confirm that this drive style suits your tool access and installation needs.
Buying Guide: How to Choose a 12-24 Self-Tapping Screw
Does the screw need to be exactly 12-24?
Check both parts of the specification. “12” identifies the screw size, while “24” indicates 24 threads per inch. A screw labeled only “#12” is not confirmed to have a 12-24 thread. Match the thread specification to the existing hole, mating part, or project requirements.
Which head style should you choose?
Choose a flat head when a countersunk, low-profile finish is needed and the material has an appropriate seat. Choose a pan head for a rounded, raised head. A hex washer head can offer a broad bearing surface and is commonly selected when the application calls for a hex-drive screw. Match the head to the surface and available tool access.
Should you use a drill-point or thread-cutting screw?
A self-drilling point can reduce the need for a separate pilot hole in suitable metal. A thread-cutting point forms threads as it is driven and may be designed for particular materials, such as the soft metal cited for the Type 23 screw. Follow the product’s intended use and verify requirements for the material being fastened.
How do length, finish, and quantity affect the choice?
Measure the material stack and available clearance before selecting a 3/4-, 1-, or 1-1/2-inch screw. Steel with zinc or galvanized plating and 410 stainless steel are different material and finish choices; the product descriptions list corrosion-related properties, but suitability depends on the project environment. Compare pack size with the number of fasteners needed, and do not substitute an assorted #12 screw for a confirmed 12-24 fastener without checking its thread.
Frequently Asked Questions
What does 12-24 mean on a screw?
It identifies a size 12 screw with 24 threads per inch. Both the screw size and thread count should match the intended application.
Are all #12 self-tapping screws 12-24?
No. A listing that says #12 does not, by itself, confirm a 24-threads-per-inch pitch. Check the full thread specification.
Can a self-drilling screw be installed without a pilot hole?
The Hicarer product is described as self-drilling into metal sheets without pre-drilling. Whether pre-drilling is needed can depend on the screw and the material.
Which listed screw is the shortest?
The Small Parts flat-head screw is listed at 3/4 inch. The other exact 12-24 options shown are one inch or 1-1/2 inches long.
Are the 410 stainless steel screws magnetic?
The product descriptions state that 410 stainless steel is magnetic. The Taiss listing also specifically notes magnetic properties for its 410 stainless steel screws.