BS ISO 965-4:1998 PDF
ISO general purpose metric screw threads. Tolerances - Limits of sizes for hot-dip galvanized external screw threads to mate with internal screw threads tapped with tolerance position H or G after galvanizing
ISO general purpose metric screw threads. Tolerances - Limits of sizes for hot-dip galvanized external screw threads to mate with internal screw threads tapped with tolerance position H or G after galvanizing
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Дата публикации:
- 15 апреля 1999 г.
- ICS:
- 21.040.10
- SKU:
- BS ISO 965-4:1998
Abstract
1 Scope This part of ISO 965 specifies deviations and limits of sizes for pitch and crest diameters for ISO general purpose metric external screw threads conforming to ISO 262 having a basic profile according to ISO 68-1. External screw threads according to this part of ISO 965 are intended to mate with internal screw threads tapped with tolerance position H or G after hot dip galvanizing. The limits of sizes for the tolerance quality specified are derived from tolerances specified in ISO 965-1 and the fundamental deviations according to the following formula:
es az = −(300 + 20 P )
where
es
is expressed in micrometres;
P
is expressed in millimetres.
Products made with thread tolerances in accordance with this part of ISO 965 may show failure at lower ultimate tensile loads than those specified in ISO 898-1 due to reduction of the stress area. External screw threads with thread tolerances according to this part of ISO 965 must not be ma...
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