1.  Purpose and Application Scope

1.1 Purpose

This document is a controlled document that describes the technical requirements for the original equipment manufacturer (OEM) mechanical parts of Huawei. It provides guidelines for:

l   Suppliers to design, produce, and inspect products.

l   The Material Quality Department of Huawei to inspect and return products.

l   The Material Supply Department of Huawei to purchase products.

l   Technical certification of OEM products.

l   The Mechanical Design Department of Huawei to select OEM mechanical parts.

1.2 Application Scope

This document is applicable to the purchase and inspection of 90° rotating handles with a diameter of 6 mm.

2.  Relevant Reference Standards

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. All subsequent changes (excluding the contents of errata) or a revised edition of any reference document marked with a date is not applicable to this document. For undated references, the latest edition of the referenced document (including any amendments) applies.

3.   Model

4.  Function Description

A 90° rotating handle with a diameter of 6 mm is secured to a module panel for ease of moving, insertion, and removal.

5.  Requirements

5.1 General Requirements

A 90° rotating handle with a diameter of 6 mm applies to indoor environments or outdoor cabinet interior.

5.2 Structural Requirements

A rotating handle consists of a handle, a pin, and supporting base mechanical parts, as shown in Figure 8-1.

It can be installed on 2.0–5.0 mm thick boards.

5.3 Material Techniques

5.3.1 Environmental Requirements

Rotating handles comply with the DKBA2332 Environmental Specifications of Huawei Purchased Materials.

5.3.2 Material and Technique Requirements

The handle is made of high-quality carbon steel（carbon steel 1215）. The supporting base mechanical parts include springs（stainless steel 304）, balls stainless steel 201, screws（stainless steel 304）, and the supporting base （carbon steel 1215）. The pin is made of stainless steel with a diameter of 2 mm .The handle and supporting base are plated with chrome. Stainless parts with passivating.

Chrome-plated parts comply with the DKBA04000114 Quality Requirements for Metal Materials and the DKBA04500066 Requirements for Metal Plating.

Stainless parts comply with the DKBA04000114 Quality Requirements for Metal Materials and the DKBA04500067 Requirement for Conversion Coating on Metals. Fastener comply with the DKBA04000114 Quality Requirements for Fastener.

5.4 Performance Requirements and Inspection Methods

5.4.1 Surface Quality

The surface is clean, flat, and smooth.

5.4.2 Strength Requirements

The pin is riveted properly and is not ejected by using a force of 2.5 kg along the pin axis.

After the panel is secured to the panel, it does not deform or break and cannot be removed by using a tension of 25 kgf.

5.4.3 Installation Requirements

After the handle is installed, the screw inside the supporting base ensures that the handle is properly installed in the collapsing position and bearing position.

After installing the handle on the panel, tighten it by using an M6 nut, a spring washer, and a flat washer.

The handle faces downward if it is used horizontally and faces rightwards if it is used vertically.

6.  Inspection Rules

The inspection rules are applicable to the incoming materials of Huawei and comply with the regulations of the quality department of the Mechanical Power Environment Department (MPE) System Department Huawei. The undefined products are inspected in batches and the single sampling plan of the GB2828 batch inspection is used.

7.  Notes

The MPE System Department of Huawei reserves the right to interpret the technical requirements.

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

8.  Appendix

Figure 8-1 shows the dimensions of a rotating handle with a diameter of 6 mm.

Dimensions of a rotating handle with a diameter of 6 mm