IE810488L - Self-drilling screw - Google Patents

Self-drilling screw

Info

Publication number
IE810488L
IE810488L IE810488A IE48881A IE810488L IE 810488 L IE810488 L IE 810488L IE 810488 A IE810488 A IE 810488A IE 48881 A IE48881 A IE 48881A IE 810488 L IE810488 L IE 810488L
Authority
IE
Ireland
Prior art keywords
segment
self
flat side
crests
drilling screw
Prior art date
Application number
IE810488A
Other versions
IE51170B1 (en
Original Assignee
Illinois Tool Works
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Illinois Tool Works filed Critical Illinois Tool Works
Publication of IE810488L publication Critical patent/IE810488L/en
Publication of IE51170B1 publication Critical patent/IE51170B1/en

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
    • F16B25/001—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
    • F16B25/0042—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 the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0068—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 the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw with multiple-threads, e.g. a double thread screws
    • 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)
  • Joining Of Building Structures In Genera (AREA)
  • Dowels (AREA)
  • Earth Drilling (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Drilling Tools (AREA)
  • Connection Of Plates (AREA)

Abstract

A self-drilling, self-tapping screw has a drill tip formed by a pair of conical segments 24, 26. Each segment has a flat side and a rounded tip with one segment being longitudinally off set with respect to the other. The shorter segment 26 may have a greater inclined angle. The flat side of the second segment is coplanar with the flat side of the first segment. The screw preferably includes a quad-lead thread 18, 20 having two crests with a first diameter and two crests with a second larger diameter. Other threads may be used. <IMAGE> [GB2070996A]
IE488/81A 1980-03-07 1981-03-06 Self-drilling,self-tapping screws IE51170B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12821180A 1980-03-07 1980-03-07

Publications (2)

Publication Number Publication Date
IE810488L true IE810488L (en) 1981-09-07
IE51170B1 IE51170B1 (en) 1986-10-29

Family

ID=22434207

Family Applications (1)

Application Number Title Priority Date Filing Date
IE488/81A IE51170B1 (en) 1980-03-07 1981-03-06 Self-drilling,self-tapping screws

Country Status (11)

Country Link
JP (1) JPS56134613A (en)
AU (1) AU543900B2 (en)
BR (1) BR8101270A (en)
CA (1) CA1142000A (en)
DE (1) DE3108010A1 (en)
FR (1) FR2477649B1 (en)
GB (1) GB2070996B (en)
IE (1) IE51170B1 (en)
IT (1) IT1137407B (en)
MX (1) MX151872A (en)
ZA (1) ZA811222B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4439077A (en) * 1982-02-11 1984-03-27 Godsted Kent B Concrete screw anchor
JPS59164410A (en) * 1983-03-07 1984-09-17 インテリア・フアスナ−ズ・インコ−ポレイテツド Screw tool
DE3346704A1 (en) * 1983-12-23 1985-07-04 Richter-System GmbH & Co KG, 6103 Griesheim SELF-TAPING QUICK-SCREW SCREW
SE442047B (en) * 1984-05-23 1985-11-25 Anders Sahlin TRESKRUV
CH682174A5 (en) * 1990-06-23 1993-07-30 Mungo Befestigungstech Ag
JP3245464B2 (en) * 1992-11-26 2002-01-15 株式会社スズキ螺子製作所 Loosening prevention screw
US5779417A (en) * 1997-05-12 1998-07-14 Illinois Tool Works Inc. Fastener having primary and secondary threads
US7040850B2 (en) * 2003-08-04 2006-05-09 Power Products Iii, L.L.C. Fastener for use with frangible material
US20090185880A1 (en) * 2008-01-18 2009-07-23 Yongping Gong Universal fastener
US20150289916A1 (en) * 2014-04-15 2015-10-15 Chester H. Sharps Bone screws having more than three leads
JP7155256B2 (en) * 2017-10-09 2022-10-18 コンメッド コーポレーション Easy-to-start cannulated bone screw

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3093028A (en) * 1959-02-05 1963-06-11 Eaton Mfg Co Self-drilling and self-tapping threaded fastener
DE1400842A1 (en) * 1961-12-01 1969-02-13 Jllinois Tool Works Inc screw
US3207024A (en) * 1962-08-20 1965-09-21 Illinois Tool Works Drill point screw
US3438299A (en) * 1968-01-26 1969-04-15 Illinois Tool Works Extruding screw
FI48297C (en) * 1968-10-23 1974-08-12 Bultfabriks Ab Self-tapping screw and procedure for its manufacture.
DE7909735U1 (en) * 1979-04-04 1979-11-22 Knoche, Frank, 5758 Froendenberg Self-drilling screw

Also Published As

Publication number Publication date
DE3108010A1 (en) 1982-01-07
FR2477649B1 (en) 1985-12-06
BR8101270A (en) 1981-09-08
ZA811222B (en) 1982-09-29
JPH0223725B2 (en) 1990-05-25
GB2070996A (en) 1981-09-16
FR2477649A1 (en) 1981-09-11
JPS56134613A (en) 1981-10-21
IT1137407B (en) 1986-09-10
AU543900B2 (en) 1985-05-09
GB2070996B (en) 1984-01-04
CA1142000A (en) 1983-03-01
MX151872A (en) 1985-04-15
IT8120125A0 (en) 1981-03-04
AU6763781A (en) 1981-09-10
IE51170B1 (en) 1986-10-29

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