NZ752082B2 - Threaded fastener with a hybrid self-drilling tip - Google Patents
Threaded fastener with a hybrid self-drilling tip Download PDFInfo
- Publication number
- NZ752082B2 NZ752082B2 NZ752082A NZ75208217A NZ752082B2 NZ 752082 B2 NZ752082 B2 NZ 752082B2 NZ 752082 A NZ752082 A NZ 752082A NZ 75208217 A NZ75208217 A NZ 75208217A NZ 752082 B2 NZ752082 B2 NZ 752082B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- tapered
- tip portion
- tapered tip
- threaded fastener
- shank
- Prior art date
Links
- 238000005553 drilling Methods 0.000 title claims abstract 7
- 230000015572 biosynthetic process Effects 0.000 claims abstract 2
- 230000007423 decrease Effects 0.000 claims 2
- 239000002184 metal Substances 0.000 abstract 1
- 239000002023 wood Substances 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
- F16B25/0031—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the screw being designed to be screwed into different materials, e.g. a layered structure or through metallic and wooden parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
- F16B25/0084—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by geometric details of the tip
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
- F16B25/103—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a drilling screw-point, i.e. with a cutting and material removing action
Abstract
The present disclosure provides a threaded fastener having a hybrid self- drilling tip or drill tip. The fastener includes a head, a shank connected to and extending from the head, a helical thread formation extending radially outwardly from part of the shank, and a self-drilling tip including a first tapered tip portion and a second tapered tip portion. The first tapered tip portion is connected at a first end to the shank and at a second end to the second tapered tip portion, and the second tapered tip portion terminates in a pointed end. The outer diameters of both tapered portions taper radially inwardly moving in the direction of the pointed end, which renders the fastener suitable for attachment to wood as well as for fastening two metal objects to one another. The two tapered portions form different angles to the longitudinal axis of the fastener. The first tapered portion forms an angle of about 5 degrees with the longitudinal axis.
Claims (6)
1. A threaded fastener comprising: 5 a head; a shank integrally connected to and extending from the head; a helical thread formation integrally connected to and extending radially outwardly from part of the shank; and a self-drilling tip integrally connected to and extending from the shank, the self- 10 drilling tip including: (a) a first tapered tip portion; and (b) a second tapered tip portion, the first tapered tip portion connected at a first end to the shank and at a second end to the second tapered tip portion, the second tapered tip portion terminating in a pointed wherein the first tapered tip portion has an outer diameter that decreases moving 15 along a longitudinal axis of the self-drilling tip in a direction toward the pointed end from the first end of the first tapered portion to the second end of the first tapered portion, whereby a surface of the first tapered tip portion at the outer diameter of the first tapered tip portion forms an angle A with the longitudinal axis; the second tapered tip portion has an outer diameter that decreases moving 20 along the longitudinal axis in a direction toward the pointed end from the first tapered portion to the pointed end, whereby a surface of the second tapered tip portion at the outer diameter of the second tapered tip portion forms an angle B with the longitudinal axis; and A is different to B and is about 5 degrees.
2. The threaded fastener of Claim 1, wherein the self-drilling tip includes a plurality of flutes.
3. The threaded fastener of Claim 1 or Claim 2, wherein B is about 30 to 32.5 30 degrees.
4. The threaded fastener of Claim 1 or Claim 2, wherein B is about 35 to 37.5 degrees.
5. The threaded fastener of Claim 1 or Claim 2, wherein B is about 60 to 65 5 degrees.
6. The threaded fastener of Claim 1, the threaded fastener being substantially as hereinbefore described with reference to the accompanying drawings.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201662405503P | 2016-10-07 | 2016-10-07 | |
| US15/709,639 US11326638B2 (en) | 2016-10-07 | 2017-09-20 | Threaded fastener with a hybrid self-drilling tip |
| PCT/US2017/052877 WO2018067323A1 (en) | 2016-10-07 | 2017-09-22 | Threaded fastener with a hybrid self-drilling tip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NZ752082A NZ752082A (en) | 2023-11-24 |
| NZ752082B2 true NZ752082B2 (en) | 2024-02-27 |
Family
ID=
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI614417B (en) | Screw with cutting teeth | |
| US11326638B2 (en) | Threaded fastener with a hybrid self-drilling tip | |
| US20130309042A1 (en) | Threaded fastener | |
| EP3636188A3 (en) | Self-holding screw head | |
| EP3330552A1 (en) | Structure of screw | |
| WO2010002529A8 (en) | Self-drilling anchor | |
| CA2432093A1 (en) | Self-drilling fastener | |
| RU2017144031A (en) | DRILLING ROD OR ADAPTER WITH A STRENGTHENED CONNECTOR ELEMENT IN THE TUBE | |
| US20160186794A1 (en) | Trim Board Screw | |
| US20170152881A1 (en) | Screw | |
| CN102128199A (en) | Masonry anchor | |
| AU2017294325B2 (en) | Plug screw | |
| US20180320727A1 (en) | Screw for Thin Iron Sheets | |
| NZ752090A (en) | Winged threaded fastener | |
| US20180209466A1 (en) | Structure of self-drilling screw | |
| US9228603B2 (en) | Crack-proof screw | |
| TWM491743U (en) | Wood screw | |
| NZ752082B2 (en) | Threaded fastener with a hybrid self-drilling tip | |
| US20140010618A1 (en) | Screw | |
| WO2019130174A3 (en) | Precision bone drill bit | |
| CA2860637C (en) | Fasteners | |
| CN102235410A (en) | Wooden screw | |
| US20150322991A1 (en) | Screws | |
| US20080095594A1 (en) | Screw | |
| US20200309182A1 (en) | Screw |