IS 7485 : Part 2 : 2005 /ISO 7046-2 : 1990 Countersunk Flat Head Screws (Common Head Style) with Type H or Type Z Cross Recess - Product Grade A - Part 2 : Steel of Property Class 8.8, Stainless Steel and Non-Ferrous Metals
ICS 21.060.10 | PGD 37 |
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Reaffirmed 2015 |
National Foreword
This Indian Standard (Part 2) (Second Revision) which is identical with ISO 7046-2 : 1990 �Cross recessed countersunk flat head screws (common head style) - Grade A - Part 2 : Steel of property ctass 8.8, stainless steel and non-ferrous metals� issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendations of the Bolts, Nuts and Fasteners Accessories Sectional Committee and approval of the Medical Instruments, General and Production Engineering Division Council.
This standard was originally issued in 1974 and revised in 1985. The earlier edition was based on ISO 7046 : 1983 �Cross-recessed countersunk flat head screws (common head style) - Product grade A and property class 4.8 only�. This second revision has been revised splitting into two parts harmonizing with ISO 7046-1 : 1994 and ISO 7046-2 : 1990 by adopting them.
Part 1 of this standard covers the screws for steel of property class 4.8.
Part 2 has been harmonized with ISO 7046-2 : 1990 by adoption to make pace with the latest developments taken place at international level.
The text of the ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminology and conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:
a) Wherever the words �International Standard� appear referring to this standard, they should be read as �Indian Standard�.
b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker.
In this adopted standard, reference appears to certain International Standards for which Indian Standards also exist. The corresponding Indian Standards which are to be substituted in their places are listed below along with their degree of equivalence for the editions indicated:
International Standard | Corresponding Indian Standard |
ISO 225 : 1983 | IS 8536 : 1987 Fasteners - Bolts, screws, studs and nuts - Symbols and designation of dimensions (first revision) |
ISO 261 : 1973 | IS 4218 (Part 2) : 2001 ISO general purpose metric screws threads: Part 2 General plan (second revision) |
ISO 888 : 1976 | IS 4206 : 1987 Dimensions for nominal lengths and thread lengths for bolts, screws and studs (first revision) |
ISO 898-1 : 1988 | IS 1367 (Part 3) : 2002 Technical supply conditions for threaded steel fasteners: Part 3 Mechanical properties of fasteners made of carbon steel and alloy steel - Bolts, screws and studs (fourth revision) |
ISO 965-2 : 1980 | IS 14962 (Part 2) : 2001 ISO general purpose metric screw threads - Tolerances: Part 2 Limits of sizes for internal and external screw threads - Medium quality |
ISO 3269 : 1988 | IS 1367 (Part 17) : 2004 Technical supply conditions for threaded steel fasteners: Part 17 Inspection, sampling and acceptance procedure (fourth revision) |
ISO 3506 : 1979 | IS 1367 (Part 14/Sec 1) : 2002 Technical supply conditions for threaded steel fasteners: Part 14 Mechanical properties of corrosion-resistant stainless-steel fasteners, Section 1 Bolts, screws and studs (third revision) |
ISO 4042 : 1989 | IS 1367 (Part 11) : 2002 Technical supply conditions for threaded steel fasteners: Part 11 Electroplated coatings (third revision) |
ISO 4757 : 1983 | IS 7478 : 1985 Dimensions for cross recesses (first revision) |
| IS 7479 : 1985 Specification for recess penetration gauges (first revision) |
ISO 4759-1 : 1978 | IS 1367 (Part 2) : 2002 Technical supply conditions for threaded steel fasteners: Part 2 Tolerances for fasteners - Bolts, screws, studs and nuts - Product grades A, B and C (third revision) |
ISO 6157-1 : 1988 | IS 1367 (Part 9/Sec 1) : 1993 Technical supply conditions for threaded steel fasteners: Part 9 Surface discontinuities, Section 1 Bolts, screws and studs for general applications (third revision) |
ISO 6157-3 : 1988 | IS 1367 (Part 9/Sec 2) : 1993 Technical supply conditions for threaded steel fasteners: Part 9 Surface discontinuities, Section 2 Bolts, screws and studs for special applications (third revision) |
ISO 7721 : 1983 | IS 11362 : 1985 Head configuration and gauging of countersunk head screws |
ISO 7721-2 : 1990 | - |
ISO 8839:1986 | - |