CN201786876U - Square-headed pentagonal half-thread flange bolt - Google Patents
Square-headed pentagonal half-thread flange bolt Download PDFInfo
- Publication number
- CN201786876U CN201786876U CN2010202902873U CN201020290287U CN201786876U CN 201786876 U CN201786876 U CN 201786876U CN 2010202902873 U CN2010202902873 U CN 2010202902873U CN 201020290287 U CN201020290287 U CN 201020290287U CN 201786876 U CN201786876 U CN 201786876U
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- China
- Prior art keywords
- spiral shell
- shell head
- square
- screw rod
- headed
- 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 - Fee Related
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Abstract
The utility model discloses a square-headed pentagonal half-thread flange bolt, which comprises a square head (1) and a shank (2). A pentagonal counter bore (3) is arranged on the square head (1), a flange plate (4) is arranged between the square head (1) and the shank (2), a plurality of radial axially-extending anti-loosening teeth are arranged on the end face of the flange plate (4) far away from the head, the shank (2) includes a threaded section (7) and a polished section (8), a through hole is axially arranged on the shank (2) in penetrating manner and communicated with the counter bore (3). The square-headed pentagonal half-thread flange bolt avoids slipping when being fastened, and saves materials.
Description
Technical field
The utility model relates to a kind of fastening piece, specifically is five jiaos of partial thread flange screws in a kind of side's spiral shell head.
Background technique
The square spiral shell head screw of prior art comprises that cross section is the square spiral shell head side of being spiral shell head and screw rod, and it is hexagonal counterbore that described spiral shell head is provided with cross section, promptly interior hexagonal counterbore, and described screw rod is a solid screw.
There is following defective in the square spiral shell head screw of prior art: at first, be interior hexagonal counterbore owing to what establish on the spiral shell head, in actual use, when screwing this screw with hexagon wrench, often skid easily; Secondly, because screw rod is solid, relatively take material, cost is than higher.
The model utility content
The technical problems to be solved in the utility model is, provides a kind of non-slip and save five jiaos of partial thread flange screws in the square spiral shell head of material in screwing the process of this screw.
Technical solution of the present utility model is, a kind of interior five jiaos of partial thread flange screws of square spiral shell head with following structure are provided, its side's of comprising spiral shell head and screw rod, described side's spiral shell head is provided with interior five jiaos of counterbores, be provided with flange plate between described side's spiral shell head and the screw rod, described flange plate is provided with some the radial locking teeth that radially extend away from the end face of spiral shell head, described screw rod comprises thread section and polished rod section, described screw rod is through with through hole along axis, and described through hole is communicated with counterbore.
After adopting above structure, five jiaos of partial thread flange screws compared with prior art have the following advantages in the utility model side's spiral shell head:
Because the counterbore on this spiral shell head is interior five jiaos, according to general knowledge as can be known, many more easy more the skidding of polygonal seamed edge are that circle is the easiest as the infinite many limit polygonals of seamed edge in the polygonal skids, so the screw of interior five jiaos of counterbores screws, more is difficult for skidding than interior hexagonal counterbore screw is more convenient; And because screw rod is through with through hole along axis, obviously, cored screw is than solid screw material saving more, and cost is lower.
Description of drawings
Fig. 1 is the structural representation of facing of the interior five jiaos of partial thread flange screws of the utility model side's spiral shell head.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the right elevation of Fig. 1.
Fig. 4 is the sectional structure schematic representation of five jiaos of partial thread flange screws in the utility model side's spiral shell head.
Shown in the figure
1, square spiral shell head, 2, screw rod, 3, counterbore, 4, flange plate, 5, locking tooth, 6, through hole, 7, thread section, 8, the polished rod section.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, five jiaos of partial thread flange screws in the utility model side's spiral shell head, its side's of comprising spiral shell head 1 and screw rod 2, described side's spiral shell head 1 is provided with interior five jiaos of counterbores 3, be provided with flange plate 4 between described side's spiral shell head 1 and the screw rod 2, described flange plate 4 is provided with some the radial locking teeth 5 that radially extend away from the end face of square spiral shell head 1, described screw rod 2 comprises thread section 7 and polished rod section 8, described screw rod 2 is through with through hole 6 along axis, and described through hole 6 is communicated with counterbore 3.
Claims (1)
1. five jiaos of partial thread flange screws in the square spiral shell head, its side's of comprising spiral shell head (1) and screw rod (2), it is characterized in that: described side's spiral shell head (1) is provided with interior five jiaos of counterbores (3), be provided with flange plate (4) between described side's spiral shell head (1) and the screw rod (2), described flange plate (4) is provided with some the radial locking teeth (5) that radially extend away from the end face of spiral shell head, described screw rod (2) comprises thread section (7) and polished rod section (8), described screw rod (2) is through with through hole (6) along axis, and described through hole (6) is communicated with counterbore (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202902873U CN201786876U (en) | 2010-08-09 | 2010-08-09 | Square-headed pentagonal half-thread flange bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202902873U CN201786876U (en) | 2010-08-09 | 2010-08-09 | Square-headed pentagonal half-thread flange bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201786876U true CN201786876U (en) | 2011-04-06 |
Family
ID=43818840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202902873U Expired - Fee Related CN201786876U (en) | 2010-08-09 | 2010-08-09 | Square-headed pentagonal half-thread flange bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201786876U (en) |
-
2010
- 2010-08-09 CN CN2010202902873U patent/CN201786876U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20110809 |