CN203161764U - Flange step bolt - Google Patents
Flange step bolt Download PDFInfo
- Publication number
- CN203161764U CN203161764U CN 201320183628 CN201320183628U CN203161764U CN 203161764 U CN203161764 U CN 203161764U CN 201320183628 CN201320183628 CN 201320183628 CN 201320183628 U CN201320183628 U CN 201320183628U CN 203161764 U CN203161764 U CN 203161764U
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- China
- Prior art keywords
- flange
- bolt
- bolt body
- hardness
- utility
- 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
A flange step bolt solves the problem that an existing flange bolt is troublesome to mount and low in hardness. The flange step bolt comprises a bolt body, the bolt body comprises a hexagonal head portion, a flange portion and a screw portion, the hexagonal head portion and the flange portion are in smooth transition, a step is arranged between the flange portion and the screw portion, a guide block is arranged on the screw portion, the bolt body is integrally formed by cold heading of high-quality carbon steel, and the hardness of the bolt body is 26-38HRC (Rockwell hardness). The flange step bolt has the advantages that the guide block enables the flange step bolt to be more convenient to assemble, and the step enables the screw portion not to break off easily and can play a role in positioning during assembly, so that the flange step bolt has higher market competitiveness.
Description
Technical field
The utility model relates to a kind of flange shoulder bolt.
Background technique
Flange bolt is made up of hexagon-head, flange plate (pad below the hexagonal is fixed together with hexagonal) and screw rod (having externally threaded cylindrical body) three parts usually, needs usually to cooperate with nut, is used for being fastenedly connected two parts that have through hole.The screw rod hardness of existing flange bolt is low, does not lead during the assembling of fracture, and the endoporus of flange bolt and product easily, makes existing flange bolt have the shortcoming that trouble is installed.
Summary of the invention
Existing flange bolt installation bothers in the background technique in order to solve, the problem that hardness is lower, and the utility model provides a kind of flange shoulder bolt.
The technical solution of the utility model is: a kind of flange shoulder bolt, comprise bolt body, described bolt body comprises hexagon-head, flange part and screw part, described hexagon-head and flange part rounding off, be provided with step between described flange part and the screw part, described screw part is provided with guide pad, and described bolt body adopts Fine Steel Casting iron one cold-heading molding, and the hardness of described bolt body is 26-38HRC.
As a kind of improvement of the present utility model, described guide pad is provided with chamfering.
As further improvement of the utility model, be provided with the guiding chamfering between described guide pad and the screw part.
As further improvement of the utility model, the hardness of described bolt body is 28-32HRC.
The beneficial effects of the utility model are, guide pad be arranged so that the utility model is convenient in when assembling, the setting of step not only makes screw part be not easy to fracture, and can play the effect of location in assembling, makes the utility model that the better market competitiveness be arranged.
Description of drawings
Accompanying drawing 1 is the utility model embodiment's structural representation.
Accompanying drawing 2 is the plan view of accompanying drawing 1.
Among the figure, 1, bolt body; 2, hexagon-head; 3, flange part; 4, screw part; 5, step; 6, guide pad; 61, chamfering; 62, guiding chamfering.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described further:
By shown in Figure 1, a kind of flange shoulder bolt, comprise bolt body 1, described bolt body 1 comprises hexagon-head 2, flange part 3 and screw part 4, and described hexagon-head 2 and flange part 3 rounding ofves are provided with step 5 between described flange part 3 and the screw part 4, described screw part 4 is provided with guide pad 6, described bolt body 1 adopts Fine Steel Casting iron one cold-heading molding, and specifically, described bolt body 1 adopts SWRCH35K steel cold-heading molding.The hardness of described bolt body 1 is 26-38HRC.Specifically, the hardness of described bolt body 1 is 28-32HRC.The beneficial effects of the utility model are, guide pad be arranged so that the utility model is convenient in when assembling, the setting of step not only makes screw part be not easy to fracture, and can play the effect of location in assembling, makes the utility model that the better market competitiveness be arranged.
Described guide pad 6 is provided with chamfering 61, is provided with guiding chamfering 62 between described guide pad 6 and the screw part 4.Being arranged so that when the utility model assembles of chamfering and guiding chamfering is more convenient.
Every technician's notice: though the utility model describes according to above-mentioned embodiment; but invention thought of the present utility model is not limited in this model utility; the repacking of any utilization inventive concept all will be included in this patent scope of patent protection.
Claims (4)
1. flange shoulder bolt, it is characterized in that: comprise bolt body (1), described bolt body (1) comprises hexagon-head (2), flange part (3) and screw part (4), described hexagon-head (2) and flange part (3) rounding off, be provided with step (5) between described flange part (3) and the screw part (4), described screw part (4) is provided with guide pad (6), described bolt body (1) adopts Fine Steel Casting iron one cold-heading molding, and the hardness of described bolt body (1) is 26-38HRC.
2. flange shoulder bolt according to claim 1 is characterized in that described guide pad (6) is provided with chamfering (61).
3. flange shoulder bolt according to claim 1 and 2 is characterized in that being provided with between described guide pad (6) and the screw part (4) guiding chamfering (62).
4. flange shoulder bolt according to claim 1, the hardness that it is characterized in that described bolt body (1) is 28-32HRC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320183628 CN203161764U (en) | 2013-04-12 | 2013-04-12 | Flange step bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320183628 CN203161764U (en) | 2013-04-12 | 2013-04-12 | Flange step bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203161764U true CN203161764U (en) | 2013-08-28 |
Family
ID=49022950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320183628 Expired - Fee Related CN203161764U (en) | 2013-04-12 | 2013-04-12 | Flange step bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203161764U (en) |
-
2013
- 2013-04-12 CN CN 201320183628 patent/CN203161764U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20150412 |
|
| EXPY | Termination of patent right or utility model |