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Screw Point Types

Plan For, Shop For & Fasten Confidently with Tanner

Interested in learning more technical information about fasteners? Please check out our Fastener Technical Data Center here. In our Fastener Technical Data Center, you will find a centralized location of essential technical data about a wide variety of aspects all relating to fasteners.

Point Type Visual

Point Type Name

Screw Type

Point Type Description

Screw Point Self-Drilling Self-Drilling Construction Screws Comes with drilling points that will drill through metal, wood, and plastic applications. Eliminates all hole preparation, therefore reducing the in-place fastener cost. No punching, drilling or tapping required. There are several points styles including type 1, 2, 3, 4 & 5 drill points depending on the application and size.
Screw Point Self-Drilling with Wings Self-Drilling with Wings Construction Screws Eliminates pre-drilling of wood and can be used with steel up to 5/16” thick. **Use Bi-Flex screws for material thickness of up to ½”
Screw Point Self-Piercing Self-Piercing Construction Screws Produces more secure sheet metal assemblies. This fastener can be used as self-drilling screw or used to drive thru pre-punched holes or no holes in light gauge sheet metal. The twin lead drills straight thru sheet metal at peak speed. Perfectly mated threads increase strip and back out pressures. These are also known as a needle point, speed points or sharp points.
Screw Point Type 17 Type 17 Construction Screws A thread cutting screw especially for wood, with a coarse tapping screw thread and a special long sharp point fluted to capture chips. The type 17 point helps the screw penetrate quickly in some of the hardest woods. Type 17 points are found on deck screws and particleboard screws.
Screw Point Drywall Drywall Construction Screws Fine thread- A bugle head screw with twin-fast thread and an extra sharp point. For attaching drywall to metal studs from 25 gauge to 20 gauge thick. Longer sizes are ideal for multiple layers or insulation.
Coarse thread- A bugle head screw with spaced threads and an extra sharp point. For attaching drywall to wood studs or to 25 gauge metal studs.
Hi-Lo thread- A bugle head screw with a double-lead, consisting of a high and low thread with an extra sharp point and black phosphate finish. The lower thread varies in height from 1/3 to 1/2 that of the higher thread, which is sharper and flatter than a standard thread.
Screw Point A A Self-Tapping Screws A thread forming screw with coarse threads and gimlet point for use in thin metal .015 to .050 thick. Used with drilled, punched or nested holes in sheet metal, resin impregnated plywood, and combinations of material.
Screw Point B B Self-Tapping Screws A thread forming screw with spaced threads and gimlet point, combining the locating point of Type A with thread size and pitch of Type B. Normal limitations of type B apply. They are used in thin metal, resinous plywood, and various composite boards. Type AB screws offer a wider range of applications over Type A screws.
Screw Point AB AB Self-Tapping Screws A thread forming screw with spaced threads and a blunt point with incomplete entering threads for use in heavier metal .050 to .200 thick. Larger root diameter with finer thread pitch for light and heavy sheet metal non - ferrous castings, plastics, impregnated plywood, combinations of materials, and other materials.
Screw Point BP BP Self-Tapping Screws A thread forming screw with spaced threads and a cone point for use where holes are slightly misaligned. Used in heavier metal .050 to .200 thick. Larger root diameter with finer thread pitch for light and heavy sheet metal non - ferrous castings, plastics, impregnated plywood, combinations of materials, and other materials.
Screw Point Type 1 Type 1 Thread-Cutting Screws A thread cutting screw with single flute for general use. Produces a fine standard machine screw thread for field replacement. These are also known as a Type D thread cutting screws.
Screw Point Type 23 Type 23 Thread-Cutting Screws A thread cutting screw with fine machine screw threads, a blunt point and tapered entering edges. These screws offer maximum thread cutting area and excellent chip clearing, with minimum tightening torques. They are used in nonferrous castings, steel sheets, plastics, brass, cast iron, etc. Also known as a type T thread cutting screw.
Screw Point Type 25 Type 25 Thread-Cutting Screws A thread cutting screw similar to type 23 point except with coarse Type B thread. Type 25 screws have spaced, incomplete tapered threads with a blunt point and tapered entering edges, with one or more cutting edges and chip removal indentations. They are used in plastic, asbestos compositions, and other composites. These screws are also known as a type BT thread cutting screws.
Screw Point F F Thread-Cutting Screws A thread cutting screw with machine screw thread with a blunt tapered point, having multi-cutting edges and chip removal cavities. Used for heavy gauge sheet metal, aluminum, zinc and lead die castings, cast iron, brass and plastic.
Screw Point U U Thread-Cutting Screws A thread forming screw with round head metallic drive screws having multiple start threads of large helix angle, with a pivot. featuring case-hardened threads, designed to be harder than the mating part. The Type U-Drive Screw is used when an attachment is not meant to be removed. It is driven into an undersized hole for great adherence, usually in metals or plastics. U-Drive Screws also have a round, unslotted head, again intended for a permanent fixture.
Screw Point E-Form 5-Lobe E-Form® Five-Lobe Thread Forming Screws This design improves both installation and in-place performance, decreases thread-forming torque, which eases starting and placement. Overcomes friction build-up and reduces drive torque. Increases thread engagement, so it resists back-out and loosening caused by vibration or thermal changes. Used on Tap-Flex™ Thread-Forming Structural Screws.
Screw Point Cup Cup Socket Set Screws A headless screw threaded the entire length with a cup-shaped indentation at the end. Designed for fast, permanent and semi-permanent location of parts on shafts with a hardness differential of 10-15 Rockwell C points and where cutting in of the cup edge on the shaft is acceptable.
Screw Point Knurled Cup Knurled Cup Socket Set Screws Similar to cup point but are used where vibration might be a problem. The serrated ridge on the knurl cup set screw helps reduce loosening due to vibration. The knurled point combines digging action of the cup point with counter-clockwise locking knurls that have a ratchet-locking action which helps resist loosening, even under the most severe vibrations.
Screw Point Flat Flat Socket Set Screws Flat surface at the end designed for frequent resetting or relocating on hard steel shafts and where minimal damage to the shafts is required. Ground flats on the shaft improves the contacts.
Screw Point Oval Oval Socket Set Screws Oval shaped point at the end, it is the preferred style for frequent reset on soft or hard shafts with minimum deforming. Also used for permanent setting on shafts spotted, splined or grooved, and for applications where the point meets the shaft on an angle.
Screw Point Cone Cone Socket Set Screws Sharp conical shaped point used for permanent setting on soft or hardened shafts. The deep penetration it supplies gives this set screw the highest torsional and axial holding power. For shafts of Rockwell hardness of C15 or over, spot point at half its depth.
Screw Point Half Dog Half-Dog Socket Set Screws Protruding tip with a flat surface intended for permanent setting, often used as a substitute for a dowel pin. The point should fit closely to the diameter of the drilled hole or against the flat.
Screw Point Full Dog Full-Dog Socket Set Screws The tip is twice as long as the tip on half dog point set screws for greater engagement in deep mating holes.
Screw Point Brass Brass Socket Set Screws Brass tip is harder than nylon, this set screw point provides a secure hold on hard surfaces.

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