GB1497239A - Screw threaded fasteners - Google Patents

Screw threaded fasteners

Info

Publication number
GB1497239A
GB1497239A GB18465/76A GB1846576A GB1497239A GB 1497239 A GB1497239 A GB 1497239A GB 18465/76 A GB18465/76 A GB 18465/76A GB 1846576 A GB1846576 A GB 1846576A GB 1497239 A GB1497239 A GB 1497239A
Authority
GB
United Kingdom
Prior art keywords
head
tool
washer
ribs
fastener
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
GB18465/76A
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.)
Textron Inc
Original Assignee
Textron 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 Textron Inc filed Critical Textron Inc
Publication of GB1497239A publication Critical patent/GB1497239A/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
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/14—Cap nuts; Nut caps or bolt caps
    • 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
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bolts, Nuts, And Washers (AREA)

Abstract

1497239 Self-tapping screws TEXTRON Inc 5 May 1976 [8 May 1975] 18465/76 Heading B3N [Also in Division F2] A self-tapping fastener comprises: a metal screw 11 having a tool-engageable head 13, an integral washer 19 with a scalloped periphery, a shoulder 22 and a threaded shank 15; and a plastics head 12 encapsulating the head 13 and washer 19 and including a tool-engaging portion and a washer portion 25 which extends around and beyond the washer 19 and through spaces 23 between adjacent scallops 21 to transmit torque between the screw 11 and the head 12. As shown the head 12 has radially-projecting ribs 26 for engatement by a driving tool, and the ribs may taper axially or circumferentially (Figs. 3 to 7, not shown). As in Figs. 15-18 (not shown) the ribs may shear at a predetermined torque to prevent unauthorized removal of the fastener. To remove the fastener the plastics head 13 is stripped off and a tool is applied to the head 13 which has a tool-engageable configuration, e.g. hexagonal as shown. The head 12 may be made of 30% glass filled nylon base material.
GB18465/76A 1975-05-08 1976-05-05 Screw threaded fasteners Expired GB1497239A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US57578475A 1975-05-08 1975-05-08

Publications (1)

Publication Number Publication Date
GB1497239A true GB1497239A (en) 1978-01-05

Family

ID=24301688

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18465/76A Expired GB1497239A (en) 1975-05-08 1976-05-05 Screw threaded fasteners

Country Status (9)

Country Link
AU (1) AU501560B2 (en)
BR (1) BR7602931A (en)
CA (1) CA1039987A (en)
CH (1) CH601683A5 (en)
DE (1) DE2620272A1 (en)
FR (1) FR2310491A1 (en)
GB (1) GB1497239A (en)
SE (1) SE7605087L (en)
ZA (1) ZA762749B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104358761A (en) * 2014-09-30 2015-02-18 无锡市羊尖盛裕机械配件厂 Integral locking screw
CN108374822A (en) * 2017-01-31 2018-08-07 福特汽车公司 Metal and plastics mixed type shear fasteners

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4239139A (en) * 1979-02-05 1980-12-16 Bott John Anthony Sliding tie down vehicle luggage carrier
FR2517794B1 (en) * 1981-12-04 1986-04-04 Schrader Sa PLUG FOR OLEOPNEUMATIC ACCUMULATION VALVE
FR2554527A1 (en) * 1983-11-07 1985-05-10 Laurent Ets Andre Fixing device such as screw, bolt and nut
CA1311949C (en) * 1988-09-07 1992-12-29 Robert Henry Day Screw/cap assemblies and their manufacture
DE19547851B4 (en) * 1995-12-21 2004-02-19 Pft Flock Technik Gmbh Cap screw, cap or similar headed fastener
DE29520252U1 (en) * 1995-12-21 1997-04-17 PFT Flock Technik GmbH, 58840 Plettenberg Cap screw

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2125987A6 (en) * 1968-04-27 1972-09-29 British Screw Co Ltd

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104358761A (en) * 2014-09-30 2015-02-18 无锡市羊尖盛裕机械配件厂 Integral locking screw
CN108374822A (en) * 2017-01-31 2018-08-07 福特汽车公司 Metal and plastics mixed type shear fasteners
CN108374822B (en) * 2017-01-31 2021-08-10 福特汽车公司 Metal and plastic hybrid shear fastener

Also Published As

Publication number Publication date
BR7602931A (en) 1976-11-23
ZA762749B (en) 1977-04-27
CH601683A5 (en) 1978-07-14
SE7605087L (en) 1976-11-09
DE2620272A1 (en) 1976-11-25
FR2310491B1 (en) 1980-05-09
AU501560B2 (en) 1979-06-21
AU1369776A (en) 1977-11-10
FR2310491A1 (en) 1976-12-03
CA1039987A (en) 1978-10-10

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee