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IT1074253B - Self-locking screw with hollow end - has flats formed along two diametrically opposed slots to prevent damage to thread of nut - Google Patents

Self-locking screw with hollow end - has flats formed along two diametrically opposed slots to prevent damage to thread of nut

Info

Publication number
IT1074253B
IT1074253B IT6877176A IT6877176A IT1074253B IT 1074253 B IT1074253 B IT 1074253B IT 6877176 A IT6877176 A IT 6877176A IT 6877176 A IT6877176 A IT 6877176A IT 1074253 B IT1074253 B IT 1074253B
Authority
IT
Italy
Prior art keywords
nut
thread
self
locking screw
screw
Prior art date
Application number
IT6877176A
Other languages
Italian (it)
Original Assignee
Gally Off Mecc Flli A & G
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 Gally Off Mecc Flli A & G filed Critical Gally Off Mecc Flli A & G
Priority to IT6877176A priority Critical patent/IT1074253B/en
Priority to FR7714663A priority patent/FR2352982A1/en
Application granted granted Critical
Publication of IT1074253B publication Critical patent/IT1074253B/en

Links

Landscapes

  • Dowels (AREA)

Abstract

The self-locking screw (10) is provided with a blind hole (12) at the end of the shank. Two diametrically opposite longitudinal slots (14,16) are cut in the wall of the hole (12) and extended to the bottom of the hole. Two diametrically opposite flats (18) are milled to a depth sufficient to remove the thread completely along the lines of the slots. The slots are forced open so that the end of the shank is permanently deformed. When the screw is screwed into a nut or a tapped hole a radial force is exerted on the thread which locks the screw. A chamfer (22) on the end of the shank facilitates the entry of the screw into the tapped hole or nut.
IT6877176A 1976-05-25 1976-07-15 Self-locking screw with hollow end - has flats formed along two diametrically opposed slots to prevent damage to thread of nut IT1074253B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IT6877176A IT1074253B (en) 1976-07-15 1976-07-15 Self-locking screw with hollow end - has flats formed along two diametrically opposed slots to prevent damage to thread of nut
FR7714663A FR2352982A1 (en) 1976-05-25 1977-05-13 Self-locking screw with hollow end - has flats formed along two diametrically opposed slots to prevent damage to thread of nut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6877176A IT1074253B (en) 1976-07-15 1976-07-15 Self-locking screw with hollow end - has flats formed along two diametrically opposed slots to prevent damage to thread of nut

Publications (1)

Publication Number Publication Date
IT1074253B true IT1074253B (en) 1985-04-20

Family

ID=11310533

Family Applications (1)

Application Number Title Priority Date Filing Date
IT6877176A IT1074253B (en) 1976-05-25 1976-07-15 Self-locking screw with hollow end - has flats formed along two diametrically opposed slots to prevent damage to thread of nut

Country Status (1)

Country Link
IT (1) IT1074253B (en)

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