HEX SOCKET SCREW KEY CHART

Metric hexagon socket screw keys sizes and dimensions chart according to ISO 2936:2001 standard.

Metric Hexagon Socket Screw Key
s			e		l₁				l2
nom.	max.	min.	max.	min.	Standard	Long	Extra-long	Limit Dev.		Limit Dev.
0.7	0.71	0.70	0.79	0.76	33	-	-	0 -2	7	0 -2
0.9	0.89	0.88	0.99	0.96	33	-	-		11
1.3	1.27	1.24	1.42	1.37	41	63.5	81		13
1.5	1.50	1.48	1.68	1.63	46.5	63.5	91.5		15.5
2	2.00	1.96	2.25	2.18	52	77	102		18
2.5	2.50	2.46	2.82	2.75	58.5	87.5	114.5	0 -4	20.5
3	3.00	2.96	3.39	3.31	66	93	129		23
3.5	3.50	3.45	3.96	3.91	69.5	98.5	140		25.5
4	4.00	3.95	4.53	4.44	74	104	144		29
4.5	4.50	4.45	5.10	5.04	80	114.5	156		30.5
5	5.00	4.95	5.67	5.58	85	120	165		33
6	6.00	5.95	6.81	6.71	96	141	186		38
7	7.00	6.94	7.94	7.85	102	147	197	0 -6	41
8	8.00	7.94	9.09	8.97	108	158	208		44
9	9.00	8.94	10.23	10.10	114	169	219		47
10	10.00	9.94	11.37	11.23	122	180	234		50
11	11.00	10.89	12.51	12.31	129	191	247		53
12	12.00	11.89	13.65	13.44	137	202	262		57
s			e		l₁				l2
nom.	max.	min.	max.	min.	Standard	Long	Extra-long	Limit Dev.		Limit Dev.
13	13.00	12.89	14.79	14.56	145	213	277	0 -7	63	0 -3
14	14.00	13.89	15.93	15.70	154	229	294		70
15	15.00	14.89	17.07	16.83	161	240	307		73
16	16.00	15.89	18.21	17.97	168	240	307		76
17	17.00	16.89	19.35	19.09	177	262	337		80
18	18.00	17.89	20.49	20.21	188	262	358		84
19	19.00	18.87	21.63	21.32	199	-	-		89
s			e		l₁				l2
nom.	max.	min.	max.	min.	Standard	Long	Extra-long	Limit Dev.		Limit Dev.
21	21.00	20.87	23.91	23.58	211	-	-	0 -12	96	0 -5
22	22.00	21.87	25.05	24.71	222	-	-		102
23	23.00	22.87	26.16	25.86	233	-	-		108
24	24.00	23.87	27.33	26.97	248	-	-		114
27	27.00	26.87	30.75	30.36	277	-	-		127
29	29.00	28.87	33.03	32.59	311	-	-		141
30	30.00	29.87	34.17	33.75	315	-	-		142
32	32.00	31.84	36.45	35.98	347	-	-		157
36	36.00	35.84	41.01	40.50	391	-	-		176

Symbols: s = Width across flats, e = Width across corners