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Unit:mm

Hexagon Socket Screw Keys

GB /T 5356 - 2021

Display drawing:

国标GB /T5356 - 2021 GB5356 5356GB Hexagon Socket Screw Keys

Size

0.7

0.9

1.3

1.5

2

2.5

3

3.5

4

4.5

5

5.5

6

s		max
		min
e		max
		min
L₁		standard	max
			min
		medium	max
			min
		long	max
			min
L₂		max
		min
Hardness(HRC)-min ^①
Guaranteed torque(N·m)-min ^②

0.71	0.89	1.27	1.5	2	2.5	3	3.5	4	4.5	5	5.5	6
0.7	0.88	1.24	1.48	1.96	2.46	2.96	3.45	3.95	4.45	4.95	5.45	5.95
0.79	0.99	1.42	1.68	2.25	2.82	3.39	3.96	4.53	5.1	5.67	6.26	6.81
0.76	0.96	1.37	1.63	2.18	2.75	3.31	3.91	4.43	5.04	5.57	6.17	6.70
33	33	41	46.5	52	58.5	66	69.5	74	80	85	88.5	96
31	31	39	44.5	50	54.5	62	65.5	70	76	81	84.5	92
/	/	63.5	63.5	77	87.5	93	98.5	104	114.5	120	129.5	141
/	/	61.5	61.5	75	83.5	89	94.5	100	110.5	116	125.5	137
/	/	81	91.5	102	114.5	129	140	144	156	165	173.5	186
/	/	79	89.5	100	110.5	125	136	140	152	161	169.5	182
7	11	13	15.5	18	20.5	23	25.5	29	30.5	33	34.5	38
5	9	11	13.5	16	18.5	21	23.5	27	28.5	31	32.5	36
50	50	50	50	50	50	50	52	52	52	52	52	52
0.08	0.18	0.53	0.82	1.9	3.8	6.6	10.3	16	22	30	42	52

Size

7

8

9

10

11

12

13

14

15

16

17

18

19

s		max
		min
e		max
		min
L₁		standard	max
			min
		medium	max
			min
		long	max
			min
L₂		max
		min
Hardness(HRC)-min ^①
Guaranteed torque(N·m)-min ^②

7	8	9	10	11	12	13	14	15	16	17	18	19
6.94	7.94	8.94	9.94	10.89	11.89	12.89	13.89	14.89	15.89	16.89	17.89	18.87
7.95	9.09	10.23	11.37	12.51	13.65	14.79	15.93	17.07	18.21	19.35	20.49	21.63
7.85	8.97	10.1	11.23	12.31	13.44	14.57	15.7	16.83	17.96	19.09	20.22	21.32
102	108	114	122	129	137	145	154	161	168	177	188	199
96	102	108	116	123	131	138	147	154	161	170	181	192
147	158	169	180	191	202	213	229	240	240	262	262	/
141	152	163	174	185	196	206	222	233	233	255	255	/
197	208	219	234	247	262	277	294	307	307	337	358	/
191	202	213	228	241	256	270	287	300	300	330	351	/
41	44	47	50	53	57	63	70	73	76	80	84	89
39	42	45	48	51	55	60	67	70	73	77	81	86
52	52	48	48	48	48	48	48	45	45	45	45	45
80	120	165	220	282	370	470	590	725	880	980	1158	1360

Size

21

22

23

24

27

29

30

32

36

41

46

s		max
		min
e		max
		min
L₁		standard	max
			min
		medium	max
			min
		long	max
			min
L₂		max
		min
Hardness(HRC)-min ^①
Guaranteed torque(N·m)-min ^②

21	22	23	24	27	29	30	32	36	41	46
20.87	21.87	22.87	23.87	26.87	28.87	29.87	31.84	35.84	40.84	45.84
23.91	25.05	26.19	27.33	30.75	33.03	34.17	36.45	41.01	46.71	52.41
23.58	24.71	25.84	26.97	30.36	32.62	33.75	35.98	40.5	46.15	51.8
211	222	233	248	277	311	315	347	391	572	656
199	210	221	236	265	299	303	335	379	560	644
/	/	/	/	/	/	/	/	/	/	/
/	/	/	/	/	/	/	/	/	/	/
/	/	/	/	/	/	/	/	/	/	/
/	/	/	/	/	/	/	/	/	/	/
96	102	108	114	127	141	142	157	176	192	216
91	97	103	109	122	136	137	152	171	187	211
45	45	45	45	45	45	45	45	45	45	45
1840	2110	2414	2750	3910	4000	4000	4000	4000	4000	4000

Alternative history

GB 5356 - 1985 GB /T 5356 - 2008 GB /T 5356 - 2021

Similar Standards

1		[DIN ISO] DIN ISO 2936 - 2016	Hexagon Socket Screw Keys
2		[ISO] ISO 2936 - 1995	Hex keys
3		[ASME] ASME B 18.3 - 2012	Hexagon Keys
4		[ISO] ISO 2936 - 2014	Assembly Tools For Screws And Nuts—Hexagon Socket Screw Keys
5		[DIN] DIN 911 - 1987	Hexagon Keys
6		[DIN] DIN 6911 - 1986	Hexagon socket screw keys with pilot
7		[ASME] ASME B 18.3 - 2003 (R2008)	Hexagon Keys
8		[DIN] DIN 6911 - 2004	Hexagon socket screw keys with pilot
9		[ISO] ISO 2936 - 2001	Assembly Tools For Screws And Nuts - Hexagon Socket Screw Keys
10		[ANSI] ANSI B 18.3.2M - 1979 (R2003)	Metric Hexagon Keys
11		[GB] GB 5356 - 1985	Hexagon Socket Screw Keys
12		[GB] GB /T 5357 - 1998	Hexagon spline wrenches
13		[BS] BS 2470 - 1973	Hexagon Keys
14		[JIS] JIS B 4648 - 2008	Hexagon Scoket Screws Key
15		[UNI] UNI 6753	Hexagon Keys For Socket Hex Screws
16		[GB] GB /T 5356 - 2008	Hexagon Socket Screw Keys