GB/T 6172.2-2016Prevailing torque type hexagon thin nuts (with non-metallic insert) (English PDF)

Foreword

This Part of GB/T 6172 is one of the serial national standards of "Prevailing Torque

Type Hexagon Nuts"; such series include.

--- GB/T 889.1 Prevailing Torque Type Hexagon Nuts (with Non-Metallic Insert),

Style-1;

--- GB/T 889.2 Prevailing Torque Type Hexagon Nuts (with Non-Metallic Insert),

Style-1 – Fine Pitch Thread;

--- GB/T 6172.2 Prevailing Torque Type Hexagon Thin Nuts (with Non-Metallic

Insert);

--- GB/T 6182 Prevailing Torque Type Hexagon Nuts (with Non-Metallic Insert),

Style-2;

--- GB/T 6183.1 Prevailing Torque Type Hexagon Nuts with Flange (with Non-

Metallic Insert), Style-2;

--- GB/T 6183.2 Prevailing Torque Type Hexagon Nuts with Flange (with Non-

Metallic Insert), Style-2 – Fine Pitch Thread;

--- GB/T 6184 Prevailing Torque Type All-Metal Hexagon Nuts, Style-1;

--- GB/T 6185.1 Prevailing Torque Type All-Metal Hexagon Nuts, Style-2;

--- GB/T 6185.2 Prevailing Torque Type All-Metal Hexagon Nuts, Style-2 – Fine

Pitch Thread;

--- GB/T 6187.1 Prevailing Torque Type All-Metal Hexagon Nuts with Flange, Style-

2;

--- GB/T 6187.2 Prevailing Torque Type All-Metal Hexagon Nuts with Flange, Style-

2 – Fine Pitch Thread.

This Part belongs to Part 2 of GB/T 6172.

This Part was drafted as per the rules specified in GB/T 1.1-2009.

This Part replaced GB/T 6172.2-2000 Prevailing Torque Type Hexagon Thin Nuts (with

Non-Metallic insert); compared with GB/T 6172.2-2000, this Part has the major

technical changes as follows.

--- Delete "if other technical requirements are needed,... the selection in GB/T

1 Scope

This Part of GB/T 6172 specifies the type and dimension, technical conditions and

markings of prevailing torque type hexagon thin nuts (with non-metallic insert).

This Part is applicable to the prevailing torque type hexagon thin nuts (with non-metallic

insert) with Thread Specification M3~M36, Property Class 04, 05, Product Grade A and

B. If D<=16mm, use Grade A nuts; if D >16mm, use Grade B nuts.

NOTE. such nuts is equivalent to the GB/T 6172.1 plus the effective torque part.

2 Normative References

The following documents are essential to the application of this document. For the

dated documents, only the versions with the dates indicated are applicable to this

document; for the undated documents, only the latest version (including all the

amendments) are applicable to this document.

GB/T 90.1 Fasteners – Acceptance Inspection (GB/T 90.1-2002, ISO 3269.2000,

IDT)

GB/T 90.2 Fasteners – Marking and Packaging

GB/T 193 General Purpose Screw Threads – Diameters and Pitches (GB/T 193-

2003, ISO 261.1998, MOD)

GB/T 1237 Designation System for Fasteners (GB/T 1237-2000, eqv ISO

8991.1986)

GB/T 3098.2 Mechanical Properties of Fasteners - Nuts (GB/T 3098.2-2015, ISO

898-2.2009, MOD)

GB/T 3098.9 Mechanical Properties of Fasteners - Prevailing Torque Type Steel

Nuts (GB/T 3098.9-2010, ISO 2320.2008, IDT)

GB/T 3103.1 Tolerances for Fasteners – Bolts, Screws and Nuts (GB/T 3103.1-

2002, idt ISO 4759-1.2000)

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