GB/T 6170 hex nut abbreviation: GB6170 hex nut;GB/T 6175 hex nut hereinafter referred to as GB6175 hex nut.
First of all, let’s take a look at the full name of the standard:
GB/T 6170-2000 type 1 hex nuts (repl ced by GB/T 6170-2015)
GB/T 6175-2000 type 2 hex nuts (replaced by GB/T 6175-2016)
Here is a brief introduction to the two standards:
Hexagon nuts, style 2:
Introduction of the standard
This standard specifies the type dimensions, technical conditions and marking of type 2 hexagon nuts.
This standard is applicable to type 2 hexagon nuts with thread sizes M5 to M36, performance grades 10 and 12, product grades A and B.Nuts, class A, D≤M16;Nuts, class B, for D > M16.
GB/T 6170-2015 Hexagon nuts, style 1
Introduction of the standard
This standard specifies the type dimensions, technical conditions and marking of type 1 hexagon nuts.
This standard is applicable to type 1 hexagon nuts with thread sizes M1.6 to M64, performance classes 6, 8 and 10, A250, A270, A450, A470, Cu2, Cu3 and AL4, product grades A and B.Class A for nuts with D≤16 mm;Class B for D BBB 0 16 mm nuts.
GB6170 hex nut and GB6175 hex nut specifications will be different
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Link to this article：What is the difference between GB/T 6170 hex nuts and GB/T 6175 hex nuts?
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