IT1083022B - SELF-PERFORATING AND SELF-THREADING SCREW - Google Patents

SELF-PERFORATING AND SELF-THREADING SCREW

Info

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
Application number
IT6870377A
Other languages
Italian (it)
Inventor
Enrico Eriksson
Francesco Rosso
Mario Pozzo
Original Assignee
Mustad O & Figlio Spa
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 Mustad O & Figlio Spa filed Critical Mustad O & Figlio Spa
Priority to IT6870377A priority Critical patent/IT1083022B/en
Priority to FR7735246A priority patent/FR2398211A1/en
Application granted granted Critical
Publication of IT1083022B publication Critical patent/IT1083022B/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
    • F16B25/10—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)
IT6870377A 1977-07-21 1977-07-21 SELF-PERFORATING AND SELF-THREADING SCREW IT1083022B (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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.

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