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Homepage>BS 7751-1:1994 Prevailing torque type wire thread inserts Specification for ISO metric coarse pitch threads
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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

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:

  1. 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;
  2. accept ISO metric male threads conforming to BS 3643-1:1981 and BS 3643-2:1981;
  3. 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;
  4. 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.