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1、INTERNATIONAL STANDARD IS0 7047 Second edition 1994-04-01 Countersunk raised head screws (common head style) with type H or type Z cross recess - Product grade A Vis h mktaux B t b = I - (k + a). 3 Copyright International Organization for Standardization Provided by IHS under license with ISO Licens
2、ee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 03:36:16 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 7047:1994(E) 4 Specifications and reference International Standards See table 2. Table 2 Material General requirements Thread Mechanical properti
3、es Tolerances Cross recesses Finish international Standard Tolerance International Standards Property class International Standards Product grade International Standard International Standard Steel Stainless steel Non-ferrous metal IS0 8992 69 IS0 261, IS0 965-2 4.8 1X2-50, A2-70 . * . IS0 898-l IS0
4、 3506 IS0 8839 A IS0 4759-l IS0 4757 Plain Requirements for electroplating are covered in IS0 4042. If different electroplating requirements are desired or if re- quirements are needed for other finishes, they shall be agreed between customer and supplier. Limits for surface discontinuities are cove
5、red in IS0 6157-I I Acceptability Acceptance procedure is covered in IS0 3269. 5 Designati0.n Example of designation: A cross-recessed countersunk raised head screw with thread M5, nominal length 1 = 20 mm, property class 4.8 and cross recess type Z is designated as follows: Countersunk raised head
6、screw IS0 7047 - M5 x 20 - 4.8 - Z 4 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 03:36:16 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 7047:1
7、994(E) ICS 21.060.10 De=riptor= fasteners, screws. cross recessed screws, raised head screws, countersunk head screws, specifications, dimensions, designation. Price based on 4 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 03:36:16 MDTNo reproduction or networking permitted without license from IHS -,-,-
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