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GB/T 820-2015 PDF English

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US$90.00 · In stock · Download in 9 seconds
GB/T 820-2015: Raised countersunk head screws with cross recess
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure
Status: Valid

GB/T 820: Historical versions

Standard ID	USD	BUY PDF	Delivery	Standard Title (Description)	Status
GB/T 820-2015	90	Add to Cart	Auto, 9 seconds.	Raised countersunk head screws with cross recess	Valid
GB/T 820-2000	279	Add to Cart	3 days	Countersunk raised head screws (common head style) with cross recess	Obsolete
GB/T 820-1985	RFQ	ASK	3 days	Cross recessed raised countersunk head screws	Obsolete

Similar standards

GB/T 819.2 GB/T 819.1 GB/T 822 GB/T 821

GB/T 820-2015: Raised countersunk head screws with cross recess

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT820-2015
GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 21.060.10 J 13 Replacing GB/T 820-2000 Raised countersunk head screws with cross recess 十字槽半沉头螺钉 [ISO 7047.2011, Raised countersunk head screws (common head style) with type H or type Z cross recess - Product grade A, MOD] Issued on: DECEMBER 31, 2015 Implemented on: APRIL 01, 2016 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of the PRC.

Foreword ... 3 1 Scope ... 6 2 Normative references ... 6 3 Size ... 7 4 Technical conditions and reference standards ... 10 5 Marking ... 10

Foreword

This standard is one of the national standards “slotted screw and screw with cross recesses” series, which includes. - GB/T 65 Slotted cheese head screws; - GB/T 67 Slotted pan head screws; - GB/T 68 Slotted countersunk flat head screws (common head styles); - GB/T 69 Countersunk slotted raised head screws (common head styles); - GB/T 818 Pan head screws with cross recess; - GB/T 819.1 Countersunk flat head screws with cross recess - Part 1. Property class 4.8; - GB/T 819.2 Countersunk flat head screws with cross recess - Part 2. Property class 8.8, stainless steel screws and non-ferrous metal screws; - GB/T 820 Raised countersunk head screws with cross recess; - GB/T 822 Cross head screws with cross recess; - GB/T 823 Small pan head screws with cross recess; - GB/T 13806.1 Fasteners for fine machines - Cross recessed screws. This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 820-2000 “Cross recessed countersunk head screw”; as compared with GB/T 820-2000, the main technical changes are as follows. - DELETE “if requiring other technical requirements, SELECT from GB/T 3098.6 and GB/T 3098.10)...” (Chapter 1 of 2000 version); - UNIFY the reference thread standard as GB/T 193, GB/T 9145 (Chapter 2); - ADD the performance rating specifications for steel and non-ferrous metal screws “d < 3 mm, FOLLOW the agreement” (Table 2); - ADD the technical requirements for non-electrolytic zinc flake coating of steel and non-ferrous metal screw, which shall follow GB/T 5267.2 (Table 2); Raised countersunk head screws with cross recess

1 Scope

This standard specifies the type and size, technical condition and marking of the raised countersunk head screws with cross recess. This standard applies to the type H and type Z raised countersunk head screws with cross recess of the thread specification M1.6 ~ M10, the performance level of 4.8, A2-50, A2-70, CU2, CU3 and AL4, AND the 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 Standard. GB/T 90.1 Fasteners - Acceptance inspection (GB/T 90.1-2002, ISO 3269.2000, IDT) GB/T 90.2 Fastener - Marking and packaging GB/T 193 General purpose metric screw threads - General plan (GB/T 193- 2003, ISO 26.1998, MOD) 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 3098.1 Mechanical properties of fasteners - Bolts, screws and studs (GB/T 3098.1-2000, idt ISO 898-1.1999) GB/T 3098.6 Mechanical properties of fasteners - Stainless steel bolts, screws and studs (GB/T 3098.6-2014, ISO 3506-1.2009, MOD) GB/T 3098.10 Mechanical properties of fasteners - Bolts, screws, studs and nuts made of non-ferrous metal (GB/T 3098.10-1993, eqv ISO 8839.1986) GB/T 3103.1 Tolerances for fasteners - Bolts, screws, studs and nuts (GB/T 3103.1-2002, ISO 4759-1.2000, IDT) GB/T 5267.1 Fastener - 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/T 5267.4 Passivation of corrosion-resistant stainless-steel fasteners (GB/T 5267.4-2009, ISO 16048.2003, IDT) GB/T 5276 Fasteners - Bolts, screws, studs and nuts - Symbols and descriptions of dimensions (GB/T 5276-2015, ISO 225.2010, MOD), GB/T 5779.1 Fasteners - Surface discontinuities - Bolts, screws and studs for general requirements (GB/T 5779.1-2000, idt ISO 6157-1.1988) GB/T 9145 General purpose metric screw threads - Limits of sizes for the screw threads of medium quality and preferable plan (GB/T 9145-2003, ISO 965-2.1998, MOD) GB/T 16938 Fasteners - General requirements for bolts screws studs and nuts (GB/T 16938-2008, ISO 8992.2005, IDT)

3 Size

As for the type and size of the screws, SEE Figure 1 and Table 1. The dimensional designation and marking shall comply with GB/T 5276. The rod diameter of the threadless part is approximately equal to the pitch diameter of the thread OR allowed to be equal to the major diameter of the thread. The type H raised countersunk head screws with cross recess of the thread size M5, nominal length l = 20 mm, performance grade of 4.8, product grade A, without surface treatment is marked as. Screw GB/T 820 M5 × 20 ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of English version of GB/T 820-2015 be delivered?

Answer: The full copy PDF of English version of GB/T 820-2015 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.

Question 2: Can I share the purchased PDF of GB/T 820-2015_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 820-2015_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. www.ChineseStandard.us -- GB/T 820-2015 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.

Question 5: Should I purchase the latest version GB/T 820-2015?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 820-2015 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

How to buy and download a true PDF of English version of GB/T 820-2015?

A step-by-step guide to download PDF of GB/T 820-2015_English

Step 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "GB/T 820-2015".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9