GB952301A - Screw-threaded fasteners - Google Patents

Screw-threaded fasteners

Info

Publication number
GB952301A
GB952301A GB4540762A GB4540762A GB952301A GB 952301 A GB952301 A GB 952301A GB 4540762 A GB4540762 A GB 4540762A GB 4540762 A GB4540762 A GB 4540762A GB 952301 A GB952301 A GB 952301A
Authority
GB
United Kingdom
Prior art keywords
thread
screw
sides
point
turns
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB4540762A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Illinois Tool Works Inc
Original Assignee
Illinois Tool Works Inc
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 Inc filed Critical Illinois Tool Works Inc
Publication of GB952301A publication Critical patent/GB952301A/en
Expired legal-status Critical Current

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
    • F16B25/001—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
    • F16B25/0015—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 material being a soft organic material, e.g. wood or plastic
    • 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
    • F16B25/0047—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 the ridge being characterised by its cross-section in the plane of the shaft axis
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Dowels (AREA)
  • Connection Of Plates (AREA)

Abstract

952,301. Self-tapping screws; working by rotary tools. ILLINOIS TOOL WORKS Inc. Nov. 30, 1962 [Dec. 1, 1961], No. 45407/62. Headings B3N and B3V. [Also in Division F2] A thread-forming screw, for use with wood or sheet metal or a thread-forming nut, has one thread 24a of greater height than another thread 26a. The screw has a four-sided pyramidal point, the sides of which are concave and identical, Fig. 3 (not shown), or it has a foursided point 18a with two adjacent long sides opposite two adjacent short sides so that there is a face 46 formed between each pair of unequal sides 28a, 30a. The point extremity is blunted for strength. As shown, there may be a second low thread 44 but there may be three or more threads of different heights. The height of a thread may vary in some turns. The screw shank may have a taper and the thread turns need not be spaced with shank surface between, as shown. The leading end may be slotted to provide a cutting edge.
GB4540762A 1961-12-01 1962-11-30 Screw-threaded fasteners Expired GB952301A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15637761A 1961-12-01 1961-12-01

Publications (1)

Publication Number Publication Date
GB952301A true GB952301A (en) 1964-03-11

Family

ID=22559316

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4540762A Expired GB952301A (en) 1961-12-01 1962-11-30 Screw-threaded fasteners

Country Status (2)

Country Link
DE (1) DE1400842A1 (en)
GB (1) GB952301A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56134613A (en) * 1980-03-07 1981-10-21 Illinois Tool Works Tapping thread for drilled hole
GB2232219A (en) * 1989-05-31 1990-12-05 Unifix Ltd A fastening device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937119A (en) * 1974-12-23 1976-02-10 Illinois Tool Works, Inc. Masonry anchor device
JPS5418613Y2 (en) * 1975-11-04 1979-07-12
WO2012152236A2 (en) * 2011-05-11 2012-11-15 Uip Universal Innovative Products Gmbh & Co. Kg Thread-forming screw

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56134613A (en) * 1980-03-07 1981-10-21 Illinois Tool Works Tapping thread for drilled hole
JPH0223725B2 (en) * 1980-03-07 1990-05-25 Illinois Tool Works
GB2232219A (en) * 1989-05-31 1990-12-05 Unifix Ltd A fastening device
GB2232219B (en) * 1989-05-31 1993-07-21 Unifix Ltd A fastening device

Also Published As

Publication number Publication date
DE1400842A1 (en) 1969-02-13

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