IT1083022B - SELF-PERFORATING AND SELF-THREADING SCREW - Google Patents
SELF-PERFORATING AND SELF-THREADING SCREWInfo
- Publication number
- IT1083022B IT1083022B IT6870377A IT6870377A IT1083022B IT 1083022 B IT1083022 B IT 1083022B IT 6870377 A IT6870377 A IT 6870377A IT 6870377 A IT6870377 A IT 6870377A IT 1083022 B IT1083022 B IT 1083022B
- Authority
- IT
- Italy
- Prior art keywords
- self
- perforating
- threading screw
- threading
- screw
- Prior art date
Links
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
- F16B25/0036—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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Drilling Tools (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT6870377A IT1083022B (en) | 1977-07-21 | 1977-07-21 | SELF-PERFORATING AND SELF-THREADING SCREW |
FR7735246A FR2398211A1 (en) | 1977-07-21 | 1977-11-23 | Self-drilling and self-tapping screw - has drill point with relieved cutting edges to minimise friction and provide adequate support |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT6870377A IT1083022B (en) | 1977-07-21 | 1977-07-21 | SELF-PERFORATING AND SELF-THREADING SCREW |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1083022B true IT1083022B (en) | 1985-05-21 |
Family
ID=11310335
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT6870377A IT1083022B (en) | 1977-07-21 | 1977-07-21 | SELF-PERFORATING AND SELF-THREADING SCREW |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2398211A1 (en) |
IT (1) | IT1083022B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NZ202991A (en) * | 1982-02-05 | 1985-11-08 | Usm Corp | Rotary threaded drilling and thread-forming screw with radiused drag surfaces in drilling portion |
JP2865823B2 (en) * | 1990-07-23 | 1999-03-08 | 国分化学工業株式会社 | Drill screw |
DE19814128A1 (en) * | 1998-03-30 | 1999-10-07 | Hilti Ag | Self drilling screw |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1075971A (en) * | 1952-04-19 | 1954-10-21 | Raimondi Acciai S P A | Helical bit and its manufacturing process |
DD83671A1 (en) * | 1969-12-23 | 1971-08-05 | Dieter Dr-Ing Roehrich | Bohrtreibschraube |
NL7501721A (en) * | 1973-08-18 | 1976-08-17 | Gkn Screws Fasteners Ltd | PROCESS FOR MANUFACTURE OF A SELF-TAPPING SCREW AND SCREW MADE UNDER APPLICATION OF THE PROCEDURE. |
-
1977
- 1977-07-21 IT IT6870377A patent/IT1083022B/en active
- 1977-11-23 FR FR7735246A patent/FR2398211A1/en active Granted
Also Published As
Publication number | Publication date |
---|---|
FR2398211B1 (en) | 1982-05-28 |
FR2398211A1 (en) | 1979-02-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19950731 |