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Lock Nuts · GB/T 889.1-2015
Lock Nuts

Lock Nuts

GB/T 889.1-2015 (reference only)

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GB/T 889.1-2015 dimension drawing

Dimensions in mm
GB/T 889.1-2015 dimension drawing

Specification parameters

Technical conditions and referenced standards
Material
Nut body
  • Steel
Insert
  • Nylon 66 is recommended.
General technical requirements
  • GB/T 16938
Thread
Tolerances
  • 6H
Standard
  • GB/T 193, GB/T 9145
Mechanical properties
Class
  • M5 ≤ D ≤ M16: property classes 5, 8 and 10 (QT);
  • M16 < D ≤ M36: property classes 5, 10 (QT) and 8 (QT);
  • D < M5: by agreement
Standard
  • GB/T 3098.2, GB/T 3098.9
Tolerances
Product grade
  • D ≤ 16 mm: product grade A; D > 16 mm: product grade B
Standard
  • GB/T 3103.1
Surface treatment
  • No treatment ;
  • Electroplating requirements in accordance with GB/T 5267.1;
  • Non-electrolytically applied zinc flake coating requirements in accordance with GB/T 5267.2;
  • Any other technical requirements or surface treatments shall be agreed between the purchaser and supplier.
Surface discontinuities
  • GB/T 5779.2
Acceptance inspection and packaging
  • GB/T 90.1, GB/T 90.2
  • QT — quenched and tempered

Product overview

These hex lock nuts use a non-metallic insert as part of the locking design. Confirm the insert type and the requirements of the intended assembly.

Specify the thread size, locking design, property class, finish, operating conditions and quantity.