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华为客户松不脱技术规范

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DKBA

华为技术有限公司内部技术规范

Technical Specification of Huawei Technologies Co., Ltd

DKBA0.480.0236 REV.G

代替 To replace DKB0.480.0236 REV.F

 

 

铝制松不脱螺钉技术要求

Requirements for aluminum captive screw

 

 

 

 

 

 

 

 

 

20130320日发布                                  20130401日实施

Released on March 20, 2013           Implemented on April 01, 2013

华为技术有限公司

Huawei Technologies Co., Ltd.

 

版权所有  侵权必究

All rights reserved


修订记录

技术要求号

版本号

更改说明

主要起草人

主要评审专家

DKBA0.480.0236

A

增加FC-4BFC-6B型号

曾献科

杨四明 曾献科 罗义诚 段旭明 肖  焰 张明灿

DKBA0.480.0236

B

修改FC-6B型号的DriverSize槽号为3#,增加强度要求。

谢会强

赵华松 杨四明 曾献科 罗义诚  肖焰   张明灿

DKBA0.480.0236

C

增加浮动量的要求;

增加了FC-3系列松不脱螺钉;

更新模板。

欧阳华

    刘胜林

王文华  马丁巳

张明灿

DKBA0.480.0236

D

增加FC-3-3BL型号,用于单板上硬盘架等的紧固。

欧阳华、王种华

周 伟  王文华 宋立群  马丁巳

张明灿

DKBA0.480.0236

E

增加FC-4/ FC-4B/ FC-6B槽型说明;将槽型统一成“一字”加“十字”型。

欧阳华

      斌 蒙光忠  汪海清

钟荣华

DKBA0.480.0236

F

优化螺钉头槽型中一字槽的尺寸

许志敏

赵华松    斌 蒙光忠  汪海清

杨四明

DKBA0.480.0236

G

增加松不脱优选属性;增加FC-6-1B型号,将FC-6B调整为FC-6-2B;FC-3-3/FC-3-3B/FC-3-3BL的浮动量由0.6mm调整为0.5mm;增加尺寸D的要求,将FC-3-3/FC-3-3BA值由1.0改为1.2增加弹簧压到底的弹力大小;增加松不脱的最少使用次数要求。

邓陶勇/郭天次

许志敏  肖春秀   赵华松  赵小青   杨四明

 

 

 

 

 

 

 

 

 

 

 


1  目的和适用范围

1.1  目的

结构外购件技术要求是描述公司结构外购件的受控性文件,其作用为:

  • 供应厂商进行产品设计、生产和检验的依据。

  • 品质部门验货、退货的依据。

  • 物料部门进行采购的依据。

  • 对供应厂商产品质量进行技术认证的依据。

  • 结构设计部门选用结构外购件的依据。

1.2   适用范围

本技术要求适用于铝制松不脱螺钉的选型、采购与检验。

2  引用的相关标准

下列文件中的条款通过本规范的引用而成为本规范的条款。凡是注日期的引用文件,其随后所有的修改单(不包括勘误的内容)或修订版均不适用于本规范,然而,鼓励根据本规范达成协议的各方研究是否可使用这些文件的最新版本。凡是不注日期的引用文件,其最新版本适用于本规范。

GB822            《十字槽圆柱头螺钉》

GB/T10125        《人造气氛腐蚀试验盐雾试验》

GB2828           《逐批检查计数抽样程序及抽样表(适应于连续批的检查)》

DKBA0.120.0019   《螺纹紧固工艺规范》

DKBA 2332        《华为采购物料环保规范》

DKBA0.450.0067    金属表面转化膜工艺质量要求

DKBA0.450.0066    《金属镀层工艺质量要求》

3  项目编码与建模命名

3.1 项目编码

无。

3.2 建模命名

型号

NAME

PNAME

PCODE

PBOM_CODE

FC-3-1

fc-3-1

captive screw FC-3-1

DKBA0.480.0236

/

FC-3-1B

fc-3-1b

captive screw FC-3-1B

DKBA0.480.0236

/

FC-3-2

fc-3-2

captive screw FC-3-2

DKBA0.480.0236

/

FC-3-2B

fc-3-2b

captive screw FC-3-2B

DKBA0.480.0236

/

FC-3-3

fc-3-3

captive screw FC-3-3

DKBA0.480.0236

/

FC-3-3B

fc-3-3b

captive screw FC-3-3B

DKBA0.480.0236

/

FC-3-3BL

fc-3-3bl

captive screw FC-3-3BL

DKBA0.480.0243

/

FC-3-4

fc-3-4

captive screw FC-3-4

DKBA0.480.0236

/

FC-3-4B

fc-3-4b

captive screw FC-3-4B

DKBA0.480.0236

/

FC-4

fc-4

captive screw FC-4

DKBA0.480.0236

/

FC-4B

fc-4b

captive screw FC-4B

DKBA0.480.0236

/

FC-6-1B

fc-6-1b

captive screw FC-6-1B

DKBA0.480.0236

/

FC-6-2B

fc-6-2b

captive screw FC-6-2B

DKBA0.480.0236

/

注:FC-3螺钉规格为M3FC-4/ FC-4B螺钉规格为M4FC-6-1B/ FC-6-2B螺钉规格为M6B表示颜色为黑色;L表示螺钉加长。

4  功能描述

松不脱螺钉用于拉手条、插箱等的固定,操作方便,而且当螺钉松开时,螺钉不会松脱。松不脱螺钉可用手拧或用螺丝刀拧。

仅可用于AB类环境和C类环境的Ⅱ型结构件;不能用于I型结构件.

5  要求

5.1  一般要求

5.1.1  结构和外形尺寸

1)结构尺寸

松不脱螺钉主要由旋钮、涨铆套、螺钉、弹簧组成,见图1

 

1  松不脱螺钉结构及尺寸示意图

结构尺寸如下表所示:

型号

适合板厚

开孔直径+0.08

槽号

A±0.1

B±0.1

C(Max)

G±0.4

D±0.3

T1±0.2

T2

E±0.2

浮动量

优选

属性

FC-3-1

 0.8-1.2

4.8

No.2

1.0

0.4

4.6

6

1.2

15.3

13.5

10.5

0.6

禁选

FC-3-1B

禁选

FC-3-2

 1.5-3.0

4.8

No.2

1.8

1.0

4.6

6

1.2

15.3

13.5

10.5

0.6

禁选

FC-3-2B

优选

FC-3-3

 0.8-2.0

4.5

No.2

1.2

0.4

4.48

5.5

0.8

14.4

13.4

8.0

0.5

禁选

FC-3-3B

优选

FC-3-3BL

0.8-2.0

4.5

No.2

1.2

0.4

4.48

6.5

0.8

15.4

13.4

8.0

0.5

禁选

FC-3-4

1.0-1.2

4.8

No.2

1.4

0.4

4.6

6

1.0

15.3

13.5

10.5

0.6

禁选

FC-3-4B

优选

FC-4

 2.0-3.5

6.8

No.2

2.4

1.0

6.7

8.5

1.0

20

17

12

0.9

 禁选

FC-4B

禁选

FC-6-1B

1.0~2.0

8.2

No.3

1.5

0.4

8.17

12.6

1.0

25.3

19.3

14.7

0.9

优选

FC-6-2B

3.0-4.8

8.2

No.3

3.4

1.6

8.17

12.6

1.0

25.3

19.3

14.7

0.9

禁选

注: 1. FC-3-2/ FC-3-2B用于1.5mm板时,建议尺寸B0.4

     2. FC-6-1B用于1.0mm板时,涨铆一侧会凸出板面0.1-0.2mm;用于1.2mm以上的板,无凸出。

2)槽型结构尺寸:

螺钉头槽型要求“十字槽”加“一字槽”。“十字槽”尺寸要求满足GB822的规定;一字槽尺寸如下图2所示。

螺钉规格

M3

M4

M6

hmm

1.0

1.2

1.6

tmm

1.0

1.2

1.6

 

2 螺钉头槽型

5.1.2 材料工艺

型号

零件材料及表面处理

旋钮

涨铆套

螺钉

弹簧

FC-3-1

6061,本色阳极氧化

6061

本色阳极氧化

不锈钢06Cr19Ni10,表面钝化

不锈钢06Cr19Ni10

表面钝化

FC-3-1B

6061,黑色阳极氧化

易切钢Y15,表面渗碳淬火,镀黑锌

FC-3-2

6061,本色阳极氧化

不锈钢06Cr19Ni10,表面钝化

FC-3-2B

6061,黑色阳极氧化

易切钢Y15,表面渗碳淬火,镀黑锌

FC-3-3

6061,本色阳极氧化

不锈钢12Cr18Ni9

表面钝化

不锈钢06Cr19Ni10,表面钝化

FC-3-3B

6061,黑色阳极氧化

易切钢Y15,表面渗碳淬火,镀黑锌

FC-3-3BL

6061,黑色阳极氧化

易切钢Y15,表面渗碳淬火,镀黑锌

FC-3-4

6061,本色阳极氧化

6061

本色阳极氧化

不锈钢06Cr19Ni10,表面钝化

FC-3-4B

6061,黑色阳极氧化

易切钢Y15,表面渗碳淬火,镀黑锌

FC-4

6061,本色阳极氧化

不锈钢06Cr19Ni10,表面钝化

FC-4B

6061,黑色阳极氧化

易切钢Y15,表面渗碳淬火,镀黑锌

FC-6-1B

6061,黑色阳极氧化

易切钢Y15,表面渗碳淬火,镀黑锌

FC-6-2B

6061,黑色阳极氧化

易切钢Y15,表面渗碳淬火,镀黑锌

 

5.1.3  环保要求

满足《DKBA 2332 华为采购物料环保规范》要求。

5.2  性能要求及检验方法

5.2.1  外观要求

表面光洁、平整,铝套直纹清晰,无批锋。

5.2.2  耐腐蚀要求

不锈钢件:符合DKBA0.450.0067金属表面转化膜工艺质量要求》不锈钢钝化的耐蚀性能要求

铝件阳极氧化:符合《DKBA0.450.0067金属表面转化膜工艺质量要求》中铝阳极氧化耐蚀性要求。

电镀锌件:符合《DKBA0.450.0066 金属镀层工艺质量要求》中电镀锌的耐蚀性能要求

松不脱组合后要求:按照IEC 68-2-30(或GB/T 2423.4)交变湿热6个周期(6天),无任何可见的被腐蚀情况。

5.2.3  强度要求

使用与螺钉槽号相匹配的标准工具,采用下表中紧固扭矩/松脱扭矩安装后,螺钉表面不得有镀层破坏、螺钉打花、滑丝等现象。

螺钉需要达到下表中最小破坏扭矩要求。

型号

螺钉内外套最小抗拉力

kgf

紧固扭矩/松脱扭矩(单位:kgf.cm)

(扭矩范围:±10%

最小破坏扭矩

kgf.cm

铆装压力

N

弹簧压到底的弹力(N

一般连接

-

-铸铝,翻边螺纹

FC-3开头的所有型号

25

5.5

5

13

1600

1.3±0.3

FC-4

35

12

10

30

2200

1.3±0.3

FC-4B

FC-6-1B

45

30

28

100

2500

6.0±0.5

FC-6-2B

注:螺钉内外套抗拉力为松不脱螺钉铆在5052H34铝板上,测得的螺钉内外套抗拉力。

5.2.4  安装要求

松不脱螺钉铆装好后,自由状态下螺钉出、回弹需顺畅。

铆装后松不脱螺钉在产品上来回使用15次,不允许出现弹簧弹不起或卡死现象,黑色螺钉,十字槽不允许露白。

 

6  检验规则

本检验规则适用于华为公司来料检验,其检验应符合华为技术有限公司质量部门的规定。对于未规定的产品采用批次检验的方式,检验方法采用GB2828逐批检验中一次抽样方案。

7  说明

1、本技术要求的解释权归华为技术有限公司整机工程部。

2、供求双方有技术上的分歧时,以本技术要求作为仲裁。

 

1 Purposes and Application Scope

1.1 Purposes

The document about the technical requirements for OEM mechanical parts is a controlled document used to provide guidelines for Huawei. The purposes are as follows:

  • Providing guidelines for suppliers to design, produce, and inspect products

  • Providing guidelines for the Quality Dept. to inspect and return products

  • Providing guidelines for the Material Dept. to purchase products

  • Providing guidelines for technical certification on the products of suppliers

  • Providing guidelines for the Architecture Design Dept. to select OEM mechanical parts

1.2 Application Scope

This document is applicable to the selection, purchase, and inspection of aluminum captive screws.

2 Related Reference Standards

This document cites the terms of the following specifications. All subsequent changes (excluding the contents of corrigendum’s) or revised editions of any citations marked with dates are not applicable to this document. The latest versions of those not marked with dates are applicable.

GB822   Cross recessed cheese head screws

GB/T10125 Corrosion tests in artificial atmospheres—Salt spray tests

DKBA0.120.0019 Screw Thread Fastening Industrial Engineering Specifications

DKBA 2332 Environmental Specifications for the Materials Purchased by Huawei

DKBA0.450.0067 Requirement for Conversion Coating on Metals

DKBA0.450.0066 Requirements for Metal Plating.

3 Project Number and Modeling Name

3.1 Project Number

None.

3.2 Modeling Name

Model

Name

PNAME

PCODE

PBOM_CODE

FC-3-1

fc-3-1

captive screw FC-3-1

DKBA0.480.0236

/

FC-3-1B

fc-3-1b

captive screw FC-3-1B

DKBA0.480.0236

/

FC-3-2

fc-3-2

captive screw FC-3-2

DKBA0.480.0236

/

FC-3-2B

fc-3-2b

captive screw FC-3-2B

DKBA0.480.0236

/

FC-3-3

fc-3-3

captive screw FC-3-3

DKBA0.480.0236

/

FC-3-3B

fc-3-3b

captive screw FC-3-3B

DKBA0.480.0236

/

FC-3-3BL

fc-3-3bl

captive screw FC-3-3BL

DKBA0.480.0243

/

FC-3-4

fc-3-4

captive screw FC-3-4

DKBA0.480.0236

/

FC-3-4B

fc-3-4b

captive screw FC-3-4B

DKBA0.480.0236

/

FC-4

fc-4

captive screw FC-4

DKBA0.480.0236

/

FC-4B

fc-4b

captive screw FC-4B

DKBA0.480.0236

/

FC-6-1B

fc-6-1b

captive screw FC-6-1B

DKBA0.480.0236

/

FC-6-2B

fc-6-2b

captive screw FC-6-2B

DKBA0.480.0236

/

Note: The FC-3 screw specification is M3. The FC-4/ FC-4B screw specification is M4. The FC-6-1B/FC-6-2B screw specification is M6. B indicates that the color is black. L indicates that the length of the screw is extended.

 

4 Function Description

A captive screw is used to fasten a faceplate or subrack. When you loosen the captive screw, it does not fall off. You can install a captive screw with your hand or with a screwdriver.

The captive screw can only used for the class A and B environment and II structural parts of class C environment, cannot used for I structural parts.

5 Requirements

5.1 General Requirements

5.1.1 Mechanical and Outline Dimensions

   1) The structure and dimensions

A captive screw consists of the knob, anchor rivet sleeve, screw, and spring. See Figure 1.

Figure 1 Structure and dimensions of a captive screw

The following table lists the structure and dimensions of the captive screw.

Model

Board Thickness

Hole Diameter

Driver Size

A±0.1

B±0.1

C(Max)

G±0.4

D±0.3

T1±0.2

T2

E±0.2

Floating Range

Priority

FC-3-1

0.8-1.2

4.8

No.2

1.0

0.4

4.6

6

1.2

15.3

13.5

10.5

0.6

DXX

FC-3-1B

DXX

FC-3-2

1.5-3.0

4.8

No.2

1.8

1.0

4.6

6

1.2

15.3

13.5

10.5

0.6

DXX

FC-3-2B

B

FC-3-3

0.8-2.0

4.5

No.2

1.0

0.4

4.48

5.5

0.8

14.4

13.4

7.6

0.5

DXX

FC-3-3B

B

FC-3-3BL

0.8-2.0

4.5

No.2

1.0

0.4

4.48

6.5

0.8

15.4

13.4

7.6

0.5

DXX

FC-3-4

1.0-1.2

4.8

No.2

1.4

0.4

4.6

6

1.0

15.3

13.5

10.5

0.6

DXX

FC-3-4B

B

FC-4

2.0-3.5

6.8

No.2

2.4

1.0

6.7

8.5

1.0

20

17

12

0.9

DXX

FC-4B

DXX

FC-6-1B

1.0~2.0

8.2

No.3

1.5

0.4

8.17

12.6

1.0

25.3

19.3

14.7

0.9

B

FC-6-2B

3.0-4.8

8.2

No.3

3.4

1.6

8.17

12.6

1.0

25.3

19.3

14.7

0.9

DXX

Note:

    1. When FC-3-2 or FC-3-2B is used for a board 1.5 mm thick, the recommended dimension B is 0.4.

2. When FC-6-1B is used for a board 1.0 mm thick, it will be 0.1-0.2mm higher than the board surface; when used for board thicker than 1.2mm, it won’t be higher than the board surface.

2) The dimensions of the screw groove

Screw groove type "the cross groove" plus " slotted "."The cross groove" dimensions to meet the requirements of GB822 regulations; slotted sizes as shown below in Figure 2.

Screw specification

M3

M4

M6

hmm

1.0

1.2

1.6

tmm

1.0

1.2

1.6

Figure 2 Groove-shaped screw head

 

5.1.3     Material Technology

Model

Material and Surface Processing

Knob

Anchor rivet Sleeve

Screw

Spring

FC-3-1

Aluminum 6061, aluminum color anodizing

Aluminum 6061

Aluminum color anodizing

Stainless steel 06Cr19Ni10, surface passivation

Stainless steel 06Cr19Ni10

Surface passivation

FC-3-1B

Aluminum 6061, black anodizing

Easy-to-cut steel, carburizing guenching and black zinc plated

FC-3-2

Aluminum 6061, aluminum color anodizing

Stainless steel 06Cr19Ni10, surface passivation

FC-3-2B

Aluminum 6061, black anodizing

Easy-to-cut steel, carburizing guenching and black zinc plated

FC-3-3

Aluminum 6061, aluminum color anodizing

Stainless steel 12Cr18Ni9

Surface passivation

Stainless steel 06Cr19Ni10, surface passivation

FC-3-3B

Aluminum 6061, black anodizing

Easy-to-cut steel, carburizing guenching and black zinc plated

FC-3-3BL

Aluminum 6061, black anodizing

Easy-to-cut steel, carburizing guenching and black zinc plated

FC-3-4

Aluminum 6061, aluminum color anodizing

Aluminum 6061

Aluminum color anodizing

Stainless steel 06Cr19Ni10, surface passivation

FC-3-4B

Aluminum 6061, black anodizing

Easy-to-cut steel, carburizing guenching and black zinc plated

FC-4

Aluminum 6061, aluminum color anodizing

Stainless steel 06Cr19Ni10, surface passivation

FC-4B

Aluminum 6061, black anodizing

Easy-to-cut steel, carburizing guenching and black zinc plated

FC-6-1B

Aluminum 6061, black anodizing

Easy-to-cut steel, carburizing guenching and black zinc plated

FC-6-2B

Aluminum 6061, black anodizing

Easy-to-cut steel, carburizing guenching and black zinc plated

 

5.1.3 Environmental Requirement

According to the requirements specified in the DKBA 2332 Environmental Specifications for the Materials Purchased by Huawei.

5.2 Performance Requirements and Inspection Methods

5.2.1 Appearance Requirement

The appearance should be clean and flat and the straight veins of the aluminum sleeve are clear without cracks.

5.2.2 Corrosion Requirement

Stainless steel part: meet the corrosion resistance of stainless to DKBA04500067 Requirement for Conversion Coating on Metals

Aluminum anodizing: meet the corrosion resistance of aluminum anodizing to DKBA04500067 Requirement for Conversion Coating on Metals

Electrolytic zinc-coated part: meet the corrosion resistance of electrolytic zinc-coated to DKBA04500066 Requirements for Metal Plating.

Captive screw assembled: an alternating hot and humid test is done for 6 cycles (6days) according to IEC 68-2-30 or GB/T2523.4, after the test there is no corrosion.

5.2.3 Strength Requirement

You need to use the standard tool matching the screw slot number. After you install the screw by using the fastening or loosening torque moment listed in the following table, no plating is damaged on the surface of the screw and the screw does not slip.

The screw must meet the requirement on the minimum damage torque moment.

Model

Minimum Rally Resistance of the internal and external jackets of the screw

(kgf)

Fastening/Loosening Torque Moment (kgf.cm)

(Range: ±10%)

Minimum Damage Torque Moment

(kgf.cm)

Riveting Pressure

(N)

Spring Pressure for the End (N)

 

 

General Connection

Steel-Steel

Steel-Cast Aluminum, with Screw Threads Upside Down Edges

FC-3

25

5.5

5

13

1600

1.3±0.3

FC-4

35

12

10

30

2200

1.3±0.3

FC-6

45

30

28

100

2500

6.0±0.5

Note: The rally that the internal and external jackets of the screw can resist is tested when the captive screw are tightened on a 5052–H34 aluminum plate

5.2.4 Install Requirement.

Captive screws installed well, in free state, screw is launched and rebounded smoothly.

After captive screws installed, screws are used in the part for 15 times, it is not allowed that spring can’t work in the process, and is not allowed to see white on the screw groove in black captive screws.

6 Inspection Rule

The inspection rule is applicable to the inspection of the incoming materials of Huawei and it must comply with the regulations of the Quality Dept. of Huawei. The undefined products are inspected in batch and the single sampling plan of the GB2828 batch inspection is used.

7 Notes

1. MPE Dept. of Huawei reserves the right to interpret the technical requirements.

2. If there is any disagreement, the arbitration is subject to the technical requirements.

 

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