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Square Nuts · GB/T 39-1988
Cap, Square & Wing Nuts

Square Nuts

GB/T 39-1988 (reference only)

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GB/T 39-1988 dimension drawing

Dimensions in mm
GB/T 39-1988 dimension drawing

Specification parameters

Technical conditions and referenced standards
Steel
Thread
Tolerances
7H
Standard
  • GB/T 196, GB/T 197
Mechanical properties
Class
  • Property classes 5 and 4
Standard
  • GB/T 3098.2
Tolerances
Product grade
Product grade C applies except as specified in Clause 3.
Standard
  • GB/T 3103.1
Surface treatment
① No treatment
  • ② Zinc plating and passivation in accordance with GB/T 5267
Acceptance inspection and packaging
  • GB/T 90

Product overview

A plain square nut. Confirm the thread, height and across-flats dimensions.

For a quote, share the required dimensions, material, finish and quantity. Availability and lead time are confirmed for each enquiry.