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sklademVydáno: 2006-10-31
BS 7751-1:1994
Prevailing torque type wire thread inserts Specification for ISO metric coarse pitch threads
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Označení normy: | BS 7751-1:1994 |
Počet stran: | 18 |
Vydáno: | 2006-10-31 |
ISBN: | 0 580 23311 1 |
Status: | Standard |
DESCRIPTION
BS 7751-1:1994
This standard BS 7751-1:1994 Prevailing torque type wire thread inserts is classified in these ICS categories:
- 21.040.10 Metric screw threads
This Part of BS 7751 specifies requirements for prevailing torque wire thread inserts which, when fitted into an appropriately prepared hole, will:
- provide ISO metric coarse pitch female threads of tolerance class 5H or 6H in the free running coils with sizes from M2.2 to M39 inclusive;
- accept ISO metric male threads conforming to BS 3643-1:1981 and BS 3643-2:1981;
- give a frictional resistance to rotation of a male threaded component assembled with it, of such a value that the insert assembly is considered self locking;
- operate successfully in the temperature range − 50 °C to + 300 °C.
NOTE ISO metric MJ threads conforming to BS 6293-1 and BS 6293-2 may be used with these inserts.