Document Details |
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| Name of Department/Committee : | PGD 37 | ||||
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| Document Number : | PGD 37 ( 22056) | ||||
| Document Title [English] : | Fasteners Heat treated tapping screws Mechanical and physical properties | ||||
| Document Title [Hindi] : | बंधकों — उष्मा-उपचारित टेपिंग पेंच — यांत्रिक और भौतिक गुणधर्म ( पांचवा पुनरीक्षण ) | ||||
| Document Type : | Revision | ||||
| Language : | English | ||||
| Priority : | 3 | ||||
| ICS Code : | 21.060.10 | ||||
| Date of Project Approval : | 27-02-2023 | ||||
| Standards to be Revised : |
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| Standards to be Superseded : |
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Classification Details |
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| Group : | Building Materials including Paints |
| Sub Group : | Fasteners and hardware |
| Sub Sub Group : | Fastners |
| Aspects : | Product Specification |
| Risk : | Low |
| Certification : | Voluntary Certification |
| Short Commom Man's Title : | |
| ITCHS Code : | |
| Ministry : |
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| Sustainable development Goals : | |
| Degree of Equivalence : | Identical under single numbering |
| Identical/Equivalent Standards : | ISO 2702 : 2022 |
| Organization Type: | ISO |
| Sl.No. | Synosis Points | |
| 1 | This document specifies the mechanical and physical properties of heat treated tapping screws made of steel, with thread sizes ST2,2 to ST9,5 in accordance with IS 5957 , when tested at the ambient temperature range of 10 °C to 35 °C, and the related test methods. Tapping screws are designed to form mating threads in sheet metals, without their own threads being deformed. Tapping screws are not intended to be pretensioned by design, even though they can experience varying degrees of low-level tensile stress after installation. | |
| 2 | The major changes in this revision are as follows: a) Document newly structured with regard to requirements and test methods; b) New Table 1 for mechanical and physical properties and related test methods (see 5.1); c) Maximum case-hardened depth increased to 0.12 mm for ST2.2 and ST2.6 (see 5.3); d) Maximum core hardness changed from 370 HV back to 390 HV and core hardness test specified more precisely (see 5.4 and 6.4); e) New clauses for ductility and ductility test added (see 5.8 and 6.8); f) Test method for case‑hardened depth determination modified (see 6.3); g) Torsional test specified more precisely (see 6.7); h) Clause on inspection has been added; and j) Clause for marking and labelling has been added | |
Timeline Details |
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Stages |
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| Sl. No. |
Stage | Date of Occurence | Remarks | Circulated to | Files |
| 1 | Generation of Document Number | 27-02-2023 | ------- | ||
| 2 | P-Draft Waived | 10-07-2023 | ------- | ||
| 3 | WC Draft | 10-07-2023 | Duration : 60 Days Submitted for HOD approval |
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| 4 | WC Draft | 14-07-2023 | WC rejected by HOD Remarks: Please make corrections as indicated on the hard copy. |
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| 5 | WC Draft | 07-08-2023 | Duration : 60 Days Submitted for HOD approval |
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| 6 | WC Draft | 07-08-2023 | WC rejected by HOD Remarks: Please correct as discussed. |
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| 7 | WC Draft | 07-08-2023 | Duration : 60 Days Submitted for HOD approval Remarks : Corrections have been made as marked in the hard copy Submitted for your kind approval please |
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| 8 | WC Draft | 07-08-2023 | WC rejected by HOD Remarks: Please correct as discussed |
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| 9 | WC Draft | 09-08-2023 | Duration : 60 Days Submitted for HOD approval Remarks : Corrections have been made as discussed Submitted for your kind approval please |
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| 10 | WC Draft | 09-08-2023 | WC rejected by HOD Remarks: Please correct the Hindi Title. |
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| 11 | WC Draft | 27-09-2023 | Duration : 60 Days Submitted for HOD approval Remarks : Hindi Title has been corrected Submitted for your kind approval please |
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| 12 | WC Draft | 27-09-2023 | WC approved by HOD |
PGDC | ------- |