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GB/T 42094-2022: Self-locking two lug anchor with incremental counterbore floating nuts with MJ threads for aerospace
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 42094-2022 | English | 149 |
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Self-locking two lug anchor with incremental counterbore floating nuts with MJ threads for aerospace
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GB/T 42094-2022
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PDF similar to GB/T 42094-2022
Basic data | Standard ID | GB/T 42094-2022 (GB/T42094-2022) | | Description (Translated English) | Self-locking two lug anchor with incremental counterbore floating nuts with MJ threads for aerospace | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | V20 | | Classification of International Standard | 49.030.30 | | Word Count Estimation | 6,632 | | Date of Issue | 2022-12-30 | | Date of Implementation | 2023-04-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 42094-2022: Self-locking two lug anchor with incremental counterbore floating nuts with MJ threads for aerospace
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 49.030.30
CCSV20
National Standards of People's Republic of China
MJ thread with countersink for aerospace
Swimming self-locking nut for double-ear bracket
(ISO 12272.1998, Aerospace-Nuts, anchor, self-locking, floating,
Released on 2022-12-30 and implemented on 2023-04-01
State Administration for Market Regulation
Released by the National Standardization Management Committee
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents"
drafting.
This document is modified to adopt ISO 12272.1998 "Aerospace nuts, backing plates, self-locking, swimming, double lugs, with countersunk holes, MJ screws
Grain, grade. 900MPa (at ambient temperature)/235°C, 900MPa (at ambient temperature)/315°C and 900MPa (at ambient temperature
Down)/425°C Dimensions”.
A chapter "Terms and Definitions" has been added to this document.
The technical differences between this document and ISO 12272.1998 and their reasons are as follows.
--- Deleted ISO 5858 (see Chapter 2 of ISO 12272.1998), the international standard is not commonly used in our country, it should be determined by the user
Requirements to adapt to the technical conditions of our country;
---Changed the expression form of the structural diagram (see Figure 1), which is more in line with the drawing habits of the domestic industry;
---Changed the expression method of letters in the structural dimensions (see Figure 1 and Table 1) and the order of letters in the table (see Table 1), which is more in line with the national
The labeling habits of the industry.
The following editorial changes have been made to this document.
--- In order to coordinate with the existing standard, the name of the standard is changed to "Swimming self-locking MJ thread double lug support plate with countersunk head for aerospace
Nuts.
This document is proposed and managed by the National Aircraft Standardization Technical Committee (SAC/TC435).
Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents.
This document is drafted by. China Aviation Comprehensive Technology Research Institute, AVIC South China Aircraft Industry Co., Ltd., Shenyang Aircraft Industry (Group)
Group) Co., Ltd.
The main drafters of this document. Wu Bo, Wang Yongmei, Zhang Yupeng, Zhao Jiaxin, Zhang Panlin.
MJ thread with countersink for aerospace
Swimming self-locking nut for double-ear bracket
1 Scope
This document specifies the structure of the MJ thread double lug bracket traveling self-locking nut (hereinafter referred to as the self-locking nut) with countersunk head used in aerospace
And size, the strength grade is 900MPa1)/235℃2), 900MPa1)/315℃2) and 900MPa1)/425℃2).
1) The minimum tensile strength load that a nut can withstand without failure at ambient temperature when tested with a bolt of the highest strength class.
2) After the nut is subjected to the highest service temperature, it returns to room temperature without permanently changing its original characteristics. The maximum service temperature depends on the material or surface of the nut.
mental state.
This document is applicable to the design of MJ thread lug plate traveling self-locking nuts with countersunk head for aerospace.
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references
For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
this document.
ISO 5855-2 Aerospace MJ threads Part 2.Limiting dimensions of bolts and nuts (Aerospace-MJthreads-
ISO 8788 Aerospace nuts, metric form and position tolerances (Aerospace-Nuts, metric-Tolerancesofformand
3 Terms and Definitions
This document does not have terms and definitions that need to be defined.
4 Structure and dimensions
The structure and dimensions of self-locking nuts shall comply with the regulations in Figure 1 and Table 1.
Dimensions and tolerances apply after any surface coating treatment and before any lubricant.
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