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GB /T 16939 - 1997

Large Hexagon Nuts with Hole

GB /T 16939 - 1997 带孔大六角螺母（套筒）

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Dimensional Specifications — GB /T 16939 - 1997 (mm)

Size	P	k_max	k_min	s_max	s_min	k_nominal	ds_nominal
M12	2	26.17	27	15	M5	24	8
M14	2.5	37.29	35	21	M6	34	10
M16	3	45.2	40	25	M6	41	10
M20	3.5	55.37	45	31	M8	50	10
M22	3.5	60.79	45	34	M8	55	10

Related Standards

GB /T 1231 (nut) - 2024— High Strength Large Hexgon Nuts for Steel Structures GB /T 13807.3 (G) - 2008— Connections with Waisted Stud - Nuts Type G GB /T 3632 (W) - 2008— Torshear Type Hexagon Nut for Steel Structures GB /T 1229 - 2006— High Strength Large Hexgon Nuts for Steel Structures GB /T 3632 (H) - 1995— Torshear Type High Strength Nut for Steel Structures GB /T 13807.3 (G) - 1992— Connections with Waisted Stud - Nuts - Type G GB /T 1229 - 1991— High Strength Large Hexagon Nuts for Steel Structure GB /T 32076.8 - 2017— High-Strength Structural Bolting Assemblies for Preloading - Nut Assemblies

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