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Compare drilling, pointed, thread-forming, and thread-cutting tips to find the best choice for your material.
Stainless Steel Flanged Hex Head Drilling Screws
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These corrosion-resistant screws save time and effort by drilling and fastening in one step. The hex head gives you a firm, high-torque grip with a nutdriver or socket. Screws have a flange under the head that spreads the load to prevent crushing thin metal.
Length is measured from under the flange. Head height includes the flange.
Galvanic-Barrier-Coated 18-8 Stainless Steel with Hardened Steel Tip—Penetrate metal and resist corrosion from contact between dissimilar metals. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. The hardened tip pierces metal for secure fastening.
Drill Tip | Head | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Point Size | Lg. | Wd. | Ht. | Flange Dia. | Max. Drilling Thk. | Tapping Screw Type | Approx. Threads per In. | Pkg. Qty. | Pkg. | |||
Galvanic-Barrier-Coated 18-8 Stainless Steel with Hardened Steel Tip | |||||||||||||
No. 10 Screw Size | |||||||||||||
| 3/4" | No. 2 | 13/64" | 0.313" | 0.16" | 0.4" | 0.106" | BSD | 16 | 10 | 90420A401 | 00000 | ||
| 1" | No. 2 | 7/32" | 0.313" | 0.157" | 0.4" | 0.11" | BSD | 16 | 10 | 97246A116 | 0000 | ||
| 1 1/2" | No. 2 | 13/64" | 0.313" | 0.16" | 0.414" | 0.106" | BSD | 16 | 10 | 90420A405 | 0000 | ||
| 2" | No. 2 | 7/32" | 0.313" | 0.163" | 0.432" | 0.177" | BSD | 16 | 10 | 97246A117 | 00000 | ||
No. 12 Screw Size | |||||||||||||
| 1" | No. 2 | 1/4" | 0.313" | 0.2" | 0.415" | 0.14" | BSD | 14 | 10 | 90420A511 | 0000 | ||
| 1 1/2" | No. 2 | 1/4" | 0.313" | 0.2" | 0.415" | 0.14" | BSD | 14 | 10 | 90420A520 | 0000 | ||
| 2" | No. 2 | 1/4" | 0.313" | 0.2" | 0.415" | 0.14" | BSD | 14 | 10 | 90420A525 | 00000 | ||
| 2 1/2" | No. 3 | 9/32" | 0.313" | 0.2" | 0.415" | 0.187" | BSD | 14 | 10 | 90420A590 | 00000 | ||
1/4" Screw Size | |||||||||||||
| 1" | No. 2 | 5/16" | 0.375" | 1/4" | 1/2" | 0.155" | BSD | 14 | 10 | 90420A614 | 00000 | ||
| 1" | No. 3 | 5/16" | 0.375" | 1/4" | 1/2" | 0.21" | CSD | 20 | 10 | 90420A650 | 00000 | ||
| 1 1/2" | No. 2 | 5/16" | 0.375" | 1/4" | 1/2" | 0.155" | BSD | 14 | 10 | 90420A516 | 00000 | ||
| 1 1/2" | No. 3 | 5/16" | 0.375" | 1/4" | 1/2" | 0.21" | CSD | 20 | 10 | 90420A655 | 00000 | ||
| 1 1/2" | No. 5 | 19/32" | 0.375" | 0.247" | 1/2" | 1/2" | CSD | 20 | 5 | 97246A111 | 0000 | ||
| 2" | No. 2 | 5/16" | 0.375" | 1/4" | 1/2" | 0.155" | BSD | 14 | 10 | 90420A518 | 00000 | ||
| 2" | No. 3 | 5/16" | 0.375" | 0.237" | 0.52" | 0.21" | CSD | 20 | 10 | 90420A659 | 00000 | ||
| 2" | No. 5 | 45/64" | 0.375" | 0.237" | 0.52" | 1/2" | CSD | 20 | 10 | 90420A681 | 00000 | ||
| 2 1/2" | No. 3 | 5/16" | 0.375" | 1/4" | 1/2" | 0.21" | CSD | 20 | 5 | 90420A662 | 00000 | ||
| 3" | No. 3 | 5/16" | 0.375" | 0.237" | 0.52" | 0.21" | CSD | 20 | 5 | 90420A665 | 00000 | ||
| 3" | No. 5 | 19/32" | 0.375" | 0.247" | 1/2" | 1/2" | CSD | 20 | 5 | 97246A112 | 0000 | ||
| 4" | No. 3 | 5/16" | 0.375" | 0.237" | 0.52" | 0.21" | CSD | 20 | 5 | 90420A667 | 00000 | ||
| 4" | No. 5 | 19/32" | 0.375" | 0.247" | 1/2" | 1/2" | CSD | 20 | 5 | 97246A113 | 00000 | ||
| 5" | No. 5 | 19/32" | 0.375" | 0.247" | 1/2" | 1/2" | CSD | 20 | 1 | 97246A114 | 0000 | ||
| 6" | No. 5 | 19/32" | 0.375" | 0.247" | 1/2" | 1/2" | CSD | 20 | 1 | 97246A115 | 0000 | ||
Stainless Steel Flanged Hex Head Drilling Screws for Aluminum
 |
 |
In a single step, these corrosion-resistant screws drill and fasten aluminum to aluminum framing. The hex head gives you a firm, high-torque grip with a nutdriver or socket. These screws have a flange under the head that spreads the load to prevent crushing thin metal.
Length is measured from the flange. Head height includes the flange.
Galvanic-Barrier-Coated 18-8 Stainless Steel—A protective layer prevents corrosion from contact between dissimilar metals. These screws also won’t rust in wet and outdoor environments.
Drill Tip | Head | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Point Size | Lg. | Wd. | Ht. | Flange Dia. | Max. Drilling Thk. | Tapping Screw Type | Approx. Threads per In. | Pkg. Qty. | Pkg. | |||
Galvanic-Barrier-Coated 18-8 Stainless Steel | |||||||||||||
No. 8 Screw Size | |||||||||||||
| 1/2" | No. 2 | 3/16" | 0.25" | 0.141" | 0.348" | 0.098" | BSD | 18 | 25 | 90821A330 | 000000 | ||
| 3/4" | No. 2 | 3/16" | 0.25" | 0.141" | 0.348" | 0.098" | BSD | 18 | 25 | 90821A350 | 00000 | ||
No. 10 Screw Size | |||||||||||||
| 3/4" | No. 3 | 1/4" | 0.313" | 0.151" | 0.414" | 0.15" | BSD | 16 | 25 | 90821A357 | 00000 | ||
| 1" | No. 3 | 1/4" | 0.313" | 0.151" | 0.414" | 0.15" | BSD | 16 | 25 | 90821A359 | 00000 | ||
No. 12 Screw Size | |||||||||||||
| 3/4" | No. 3 | 9/32" | 0.313" | 0.194" | 0.432" | 0.187" | BSD | 14 | 25 | 90821A374 | 00000 | ||
| 1" | No. 3 | 9/32" | 0.313" | 0.194" | 0.432" | 0.187" | BSD | 14 | 25 | 90821A377 | 00000 | ||
| 1 1/4" | No. 3 | 9/32" | 0.313" | 0.194" | 0.432" | 0.187" | BSD | 14 | 10 | 90821A380 | 00000 | ||
| 1 1/2" | No. 3 | 9/32" | 0.313" | 0.194" | 0.432" | 0.187" | BSD | 14 | 25 | 90821A390 | 00000 | ||
| 2" | No. 3 | 9/32" | 0.313" | 0.194" | 0.432" | 0.187" | BSD | 14 | 5 | 90821A420 | 0000 | ||
| 3" | No. 3 | 9/32" | 0.313" | 0.194" | 0.432" | 0.187" | BSD | 14 | 5 | 90821A510 | 00000 | ||
1/4" Screw Size | |||||||||||||
| 3/4" | No. 3 | 5/16" | 0.375" | 0.24" | 0.52" | 0.21" | BSD | 14 | 25 | 90821A550 | 00000 | ||
| 1" | No. 3 | 5/16" | 0.375" | 0.24" | 0.52" | 0.21" | BSD | 14 | 25 | 90821A553 | 00000 | ||
| 1" | No. 4 | 5/16" | 0.375" | 0.24" | 0.52" | 0.236" | CSD | 20 | 10 | 90821A610 | 00000 | ||
| 1 1/2" | No. 3 | 5/16" | 0.375" | 0.24" | 0.52" | 0.21" | BSD | 14 | 10 | 90821A559 | 00000 | ||
| 1 1/2" | No. 4 | 5/16" | 0.375" | 0.24" | 0.52" | 0.236" | CSD | 20 | 10 | 90821A613 | 00000 | ||
Stainless Steel Phillips Flat Head Drilling Screws for Joining Wood to Sheet Metal
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With Cutting Wings |
 |
Without Cutting Wings |
These rust-resistant screws join wood to sheet metal by drilling, tapping, and fastening in one go. Their self-drilling tip clears the way while their threads tap into the material. Made of stainless steel, they also won't degrade from chemically treated wood, such as ACQ-treated (arsenic-free) lumber. The flat head sits flush, so you won't need to worry about snags. The Phillips drive handles enough torque to drive into most kinds of wood without slipping.
Length is measured from the top of the head.
Galvanic-Barrier-Coated 18-8 Stainless Steel—A protective layer stops corrosion from metal-to-metal contact. A good choice for outdoor and wet environments, these screws also won't rust.
Cutting-Winged Body—These wings create a tight hold by preventing screw threads from engaging until they reach the sheet metal. Then, the wings snap off so the screw can switch from drilling through wood to fastening into metal.
Head | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Dia. | Ht. | Drill Point Size | Drill Tip Lg. | Body Type | Flat Head Profile | Approx. Threads per In. | Threading | Tapping Method | Pkg. Qty. | Pkg. | |||
Galvanic-Barrier-Coated 18-8 Stainless Steel | ||||||||||||||
No. 10 | ||||||||||||||
| 1 1/2" | 0.37" | 0.178" | No. 3 | 1/4" | Cutting Wings | Standard | 16 | Fully Threaded | Thread Forming | 10 | 90420A720 | 000000 | ||
No. 12 | ||||||||||||||
| 1" | 0.415" | 0.09" | No. 2 | 19/64" | — | Undercut | 14 | Fully Threaded | Thread Forming | 10 | 90420A760 | 0000 | ||
| 1 1/2" | 0.415" | 0.09" | No. 2 | 19/64" | — | Undercut | 14 | Fully Threaded | Thread Forming | 10 | 90420A763 | 00000 | ||
| 2 13/16" | 0.415" | 0.2" | No. 5 | 45/64" | Cutting Wings | Standard | 14 | Partially Threaded | Thread Forming | 5 | 90420A724 | 0000 | ||
1/4"-20 | ||||||||||||||
| 2 13/16" | 0.48" | 0.2" | No. 5 | 45/64" | Cutting Wings | Standard | — | Partially Threaded | Thread Forming | 5 | 90420A728 | 00000 | ||
| 3" | 0.48" | 0.1" | No. 3 | 5/16" | — | Undercut | — | Partially Threaded | Thread Forming | 5 | 90420A766 | 00000 | ||
| 4" | 0.48" | 0.1" | No. 3 | 5/16" | — | Undercut | — | Partially Threaded | Thread Forming | 5 | 90420A769 | 00000 | ||
