GB/T 6177.2-2016: Hexagon nuts with flange, style 2 -- Fine pitch thread

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Scope

This Part of GB/T 6177 specifies the type dimension, technical conditions and
markings of hexagon nuts with flange, style 2 – fine pitch thread.
This Part is applicable to the hexagon nuts with flange, Style 2 with thread nominal
diameter D = 8mm~20mm; fine threads and performance grades are Grade 8, 10, 12;
A2-70, and product grades are Grade A and B. Grade A is applied to the nuts with
D≤16mm; while Grade B is applied to the nuts with D >16mm.

Basic Data

Standard ID	GB/T 6177.2-2016 (GB/T6177.2-2016)
Description (Translated English)	Hexagon nuts with flange, style 2 -- Fine pitch thread
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J13
Classification of International Standard	21.060.20
Word Count Estimation	11,156
Date of Issue	2016-02-24
Date of Implementation	2016-06-01
Older Standard (superseded by this standard)	GB/T 6177.2-2000
Quoted Standard	GB/T 90.1; GB/T 90.2; GB/T 193; GB/T 1237; GB/T 3098.2; GB/T 3098.15; GB/T 3103.1; GB/T 5267.1; GB/T 5267.2; GB/T 5267.4; GB/T 5276; GB/T 5779.2; GB/T 9145; GB/T 16938
Adopted Standard	ISO 10663-2012, MOD
Regulation (derived from)	National Standard Announcement No
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the type size, technical conditions and marking of fine-pitch type 2 hexagonal flange nuts. This standard applies to type 2 hex nuts with nominal thread diameters D = 8 mm to 20 mm, fine thread, performance classes 8, 10, 12 and A2-70, grades A and B, respectively. Class A for D �� 16 mm; Class B for D and gt; 16 mm nuts.