GB/T 845-2017_English: PDF (GB/T845-2017)
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 845-2017 | English | 90 |
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Cross-recessed pan head tapping screws
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GB/T 845-2017
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| GB/T 845-1985 | English | 80 |
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Cross recessed pan head tapping screws
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GB/T 845-1985
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| Standard ID | GB/T 845-2017 (GB/T845-2017) | | Description (Translated English) | Cross-recessed pan head tapping screws | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J13 | | Classification of International Standard | 21.060.10 | | Word Count Estimation | 6,678 | | Date of Issue | 2017-07-12 | | Date of Implementation | 2018-02-01 | | Drafting Organization | China Machine Productivity Promotion Center | | Administrative Organization | National Fastener Standardization Technical Committee (SAC/TC 85) | | Proposing organization | China Machinery Industry Federation | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China, China National Standardization Administration Committee | | Standard ID | GB/T 845-1985 (GB/T845-1985) | | Description (Translated English) | Cross recessed pan head tapping screws | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J13 | | Classification of International Standard | 21.060.10 | | Word Count Estimation | 4,454 | | Date of Issue | 1985/8/1 | | Date of Implementation | 1986/6/1 | | Older Standard (superseded by this standard) | GB 845-1976 | | Quoted Standard | GB/T 5280-1985; GB 3098.5-1985; GB/T 3103.1-1982; GB/T 944.1-1985; GB/T 5267-1985; GB/T 90-1985 | | Adopted Standard | ISO 7049-1983, MOD | | Drafting Organization | Standardization Institute of the Ministry of Machinery Industry | | Administrative Organization | Standardization Institute of the Ministry of Machinery Industry | | Summary | This standard specifies the thread size for the ST 2. 2 ~ ST 9. 5 of Phillips pan head self-tapping screws. |
GB/T 845-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 21.060.10
J 13
Replacing GB/T 845-1985
Cross-Recessed Pan Head Tapping Screws
(ISO 7049.2011, MOD)
十字槽盘头自攻螺钉
ISSUED ON. JULY 12, 2017
IMPLEMENTED ON. FEBRUARY 1, 2018
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
3. No action is required - Full-copy of this standard will be automatically &
immediately delivered to your EMAIL address in 0~60 minutes.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Type and Dimension ... 6
4 Technical Conditions and Reference Standards ... 9
5 Markings ... 9
Foreword
This Standard is one of the serial national standards of “Tapping Screws”, such series
include.
--- GB/T 845 Cross-Recessed Pan Head Tapping Screws;
--- GB/T 846 Cross-Recessed Countersunk (Flat) Head Tapping Screws;
--- GB/T 847 Cross-Recessed Raised Countersunk Head Tapping Screws;
--- GB/T 2670.1 Hexalobular Socket Pan Head Tapping Screws;
--- GB/T 2670.2 Hexalobular Socket Countersunk Head Tapping Screws;
--- GB/T 2670.3 Hexalobular Socket Raised Countersunk (Oval) Head Tapping
Screws;
--- GB/T 5282 Slotted Pan Head Tapping Screws;
--- GB/T 5283 Slotted Countersunk Head Tapping Screws;
--- GB/T 5284 Slotted Raised Countersunk Head Tapping Screws;
--- GB/T 5285 Hexagon Head Tapping Screws;
--- GB/T 9456 Cross-Recessed Hexagon Head Tapping Screws with Indentation;
--- GB/T 13806.2 Fasteners for Fine Mechanics – Cross-Recessed Tapping Screws
– Scrape Point;
--- GB/T 16824.1 Hexagon Head Tapping Screws with Collar;
--- GB/T 16824.2 Hexagon Flange Head Tapping Screws.
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
This Standard replaced GB/T 845-1985 Cross-Recessed Pan Head Tapping Screws;
compared with GB/T 845-1985, this Standard has the major technical changes as
follows.
--- Increased Type-R (see Figure 1 and Table 1);
--- Add general technical conditions as per GB/T 16938 (see Clause 2, Table 2);
--- For steel screws, add the untreated and non-electrolytically applied zinc flake
coating technical requirements as per GB/T 5267.2 (see Table 2);
Cross-Recessed Pan Head Tapping Screws
1 Scope
This Standard specifies the type and dimension, technical conditions and marking of
cross-recessed pan head tapping screws.
This Standard is applicable to the cross-recessed pan head tapping screws with
Thread Specification of ST 2.2 ~ ST 9.5, and Product Grade A.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 90.1 Fasteners – Acceptance Inspection (GB/T 90.1-2002, idt ISO
3269.2000)
GB/T 90.2 Fasteners – Marking and Packaging
GB/T 944.1 Cross Recesses for Screws (GB/T 944.1-1985, eqv ISO 4757.1983)
GB/T 1237 Designation System for Fasteners (GB/T 1237-2000, eqv ISO
8991.1986)
GB/T 3098.5 Mechanical Properties of Fasteners -Tapping Screws (GB/T 3098.5-
2016, ISO 2702.2011, MOD)
GB/T 3098.21 Mechanical Properties of Fasteners – Stainless Steel Tapping
Screws (GB/T 3098.21-2014, ISO 3506-4.2008, MOD)
GB/T 3103.1 Tolerances for Fasteners – Bolts, Screws and Nuts (GB/T 3103.1-
2002, idt ISO 4759-1.2000)
GB/T 5267.1 Fasteners – Electroplated Coatings (GB/T 5267.1-2002, ISO
4042.1999, IDT)
GB/T 5267.2 Fasteners – Non-Electrolytically Applied Zinc Flake Coatings (GB/T
5267.2-2002, ISO 10683.2000, IDT)
......
GB 845-85
GB
NATIONAL STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
UDC 621.382.216.5.082.6
Replacing GB 845-76
Cross recessed pan head tapping screws
十字槽盘头自攻螺钉
ISSUED ON. AUGUST 1, 1985
IMPLEMENTED ON. JUNE 1, 1986
Issued by. National Bureau of Standards
Table of Contents
1 Introduction ... 3
2 Normative references ... 3
3 Size ... 4
4 Technical conditions ... 7
5 Marking ... 7
Additional information... 7
Cross recessed pan head tapping screws
1 Introduction
This Standard specifies the cross recessed pan head tapping screw of which
the thread size is ST 2.2 ~ ST 9.5.
This Standard equivalently uses an International Standard ISO 7049-1983
Cross recessed pan head tapping screws.
2 Normative references
GB 5280-85, Tapping screws thread
GB 3098.5-85, Fasteners - Mechanical properties - Tapping screws
GB 3103.1-82, Tolerances for fasteners-Bolts, screws, studs and nuts
GB 944.1-85, Cross recesses for screws
GB 5267-85, Electroplated coatings on threaded fasteners
GB 90-85, Acceptance inspection, marking and packaging of fasteners
......
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