Hexagon Nuts

Hex Nuts

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Standard / drawing type Nominal size d

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Equivalent standards

Standard	Standard body

		Steel	Stainless steel	Non-ferrous metals
General technical requirements		GB/T 16938
Thread	Tolerances	6H
Thread	Standard	GB/T 193, GB/T 9145
Mechanical properties	Class	D < M5: by agreement; M5≤D≤M16:6, 8, 10(QT); M16<D≤M39:6, 8, 10(QT); D > M39: by agreement	D≤M24:A2-70, A4-70; M24<D≤M39:A2-50, A4-50; D > M39: by agreement	CU2, CU3, AL4
Mechanical properties	Standard	GB/T 3098.2	GB/T 3098.15	GB/T 3098.10
Tolerances	Product grade	D ≤ M16: product grade A; D > M16: product grade B
Tolerances	Standard	GB/T 3103.1
Surface discontinuities		GB/T 5779.2	–
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; Hot-dip galvanizing requirements in accordance with GB/T 5267.3	Simple treatment; Passivation requirements in accordance with GB/T 5267.4	Simple treatment; Electroplating requirements in accordance with GB/T 5267.1
Surface treatment		Any other technical requirements or surface treatments shall be agreed between the purchaser and supplier.
Acceptance inspection and packaging		GB/T 90.1, GB/T 90.2
		QT — quenched and tempered

		Steel	Stainless steel	Non-ferrous metals
General technical requirements		GB/T 16938
Thread	Tolerances	6H
Thread	Standard	GB/T 193, GB/T 9145
Mechanical properties	Class	D < M5: by agreement; M5≤D≤M16:6, 8, 10(QT); M16<D≤M39:6, 8, 10(QT); D > M39: by agreement	D≤M24:A2-70, A4-70; M24<D≤M39:A2-50, A4-50; D > M39: by agreement	CU2, CU3, AL4
Mechanical properties	Standard	GB/T 3098.2	GB/T 3098.15	GB/T 3098.10
Tolerances	Product grade	D ≤ M16: product grade A; D > M16: product grade B
Tolerances	Standard	GB/T 3103.1
Surface discontinuities		GB/T 5779.2	–
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; Hot-dip galvanizing requirements in accordance with GB/T 5267.3	Simple treatment; Passivation requirements in accordance with GB/T 5267.4	Simple treatment; Electroplating requirements in accordance with GB/T 5267.1
Surface treatment		Any other technical requirements or surface treatments shall be agreed between the purchaser and supplier.
Acceptance inspection and packaging		GB/T 90.1, GB/T 90.2
		QT — quenched and tempered

Hex nuts have an internal thread and six external flats for tightening with a wrench. Select a nut to match the mating bolt or stud.

Specify the thread diameter and pitch, required standard and edition, property class, finish and quantity.