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This product is regulated by the following standards:

ISO 773 UNI 6604 DIN 6885-1 BS 4235-1 DIN 6885-3 NF E22-177 NF E27-656 DIN 6885-2

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Parallel keys

This product is regulated by the following standards:

Standard ISO 773

Rectangular or square parallel keys and their corresponding keyways

Dimensions in mm - source ISO 773 Js9 width tolerance Withdrawn
Publication date: 01/1969
key width b	2	3	4	5	6	8	10	12	14	16	18	20	22
key heigth h	2	3	4	5	6	7	8	8	9	10	11	12	14
for shaft diameters D (over÷to)	6 ÷ 8	8 ÷ 10	10 ÷ 12	12 ÷ 17	17 ÷ 22	22 ÷ 30	30 ÷ 38	38 ÷ 44	44 ÷ 50	50 ÷ 58	58 ÷ 65	65 ÷ 75	75 ÷ 85
r min	0.08	0.08	0.08	0.16	0.16	0.16	0.25	0.25	0.25	0.25	0.25	0.40	0.40
r max	0.16	0.16	0.16	0.25	0.25	0.25	0.40	.040	0.40	0.40	0.40	0.60	0.60
t1 min	1.0	1.4	1.8	2.3	2.8	3.3	3.3	3.3	3.8	4.3	4.4	4.9	5.4
t1 max	1.1	1.5	1.9	2.4	2.9	3.5	3.5	3.5	4.0	4.5	4.6	5.1	5.6

Dimensions in mm - source ISO 773 Withdrawn
key width b	25	28	32	36	40	45	50	56	63	70	80	90	100
key heigth h	14	16	18	20	22	25	28	32	32	36	40	45	50
for shaft diameters D (over÷to)	85 ÷ 95	95 ÷ 110	110 ÷ 130	130 ÷ 150	150 ÷ 170	170 ÷ 200	200 ÷ 230	230 ÷ 260	260 ÷ 290	290 ÷ 330	330 ÷ 380	380 ÷ 440	440 ÷ 500
r min	0.40	0.40	0.40	0.70	0.70	0.70	0.70	1.20	1.20	1.20	2.00	2.00	2.00
r max	0.60	0.60	0.60	1.00	1.00	1.00	1.00	1.60	1.60	1.60	2.50	2.50	2.50
t1 min	5.4	6.4	7.4	8.4	9.4	10.4	11.4	12.4	12.4	14.4	15.4	17.4	19.5
t1 max	5.6	6.6	7.6	8.7	9.7	10.7	11.7	12.7	12.7	14.7	15.7	17.7	19.8

Standard UNI 6604

Suppliers of Parallel keys, deep pattern

Parallel keys. Dimensions and application.

Dimensions in mm - source UNI 6604 Withdrawn Publication date: 12 - 1696

key width b max = nom size	2	3	4	5	6	8	10	12	14	16	18	20	22
key width b min	1.975	2.975	3.97	4.97	5.97	7.964	9.964	11.957	13.957	15.957	17.957	19.948	21.948
key heigth h max	2	3	4	5	6	7	8	8	9	10	11	12	14
key heigth h min	1.975	2.975	3.97	4.97	5.97	6.91	7.91	7.91	8.91	9.91	10.89	11.89	13.89
for shaft diameters d1 (over÷to)	6 ÷ 8	8 ÷ 10	10 ÷ 12	12 ÷ 17	17 ÷ 22	22 ÷ 30	30 ÷ 38	38 ÷ 44	44 ÷ 50	50 ÷ 58	58 ÷ 65	65 ÷ 75	75 ÷ 85

Dimensions in mm - source UNI 6604 Withdrawn Publication date: 12 - 1696
key width b max = nom size	25	28	32	36	40	45	50	56	63	70	80	90	100
key width b min	24.948	27.948	31.938	35.938	39.938	44.938	49.938	55.926	62.926	69.926	79.926	89.913	99.913
key heigth h max	14	16	18	20	22	25	28	32	32	36	40	45	50
key heigth h min	13.89	15.89	17.89	19.87	21.87	24.87	27.87	31.84	31.84	35.84	39.84	44.84	49.84
for shaft diameters d1 (over÷to)	85 ÷ 95	95 ÷ 110	110 ÷ 130	130 ÷ 150	150 ÷ 170	170 ÷ 200	200 ÷ 230	230 ÷ 260	260 ÷ 290	290 ÷ 330	330 ÷ 380	380 ÷ 440	440 ÷ 500

Standard DIN 6885-1

Drive type fastenings without taper action, parallel keys, keyways - Deep pattern - Part 1:

Dimensions in mm - source DIN 6885-1 Withdrawn
Publication date: 08/1968 - Supersedes DIN 6885-1: 02/1956
key width b	2	3	4	5	6	8	10	12	14	16	18	20	22
key heigth h	2	3	4	5	6	7	8	8	9	10	11	12	14
for shaft diameters d1 (over÷to)	6 ÷ 8	8 ÷ 10	10 ÷ 12	12 ÷ 17	17 ÷ 22	22 ÷ 30	30 ÷ 38	38 ÷ 44	44 ÷ 50	50 ÷ 58	58 ÷ 65	65 ÷ 75	75 ÷ 85
groove width b	2	3	4	5	6	8	10	12	14	16	18	20	22
d2=d1+	2.5	3.5	4	5	6	8	8	8	9	11	11	12	14
depth t1	1.2	1.8	2.5	3	3.5	4	5	5	5.5	6	7	7.5	9
groove depth t2	1	1.4	1.8	2.3	2.8	3.3	3.3	3.3	3.8	4.3	4.4	4.9	5.4

Dimensions in mm - source Din 6885-1
key width b	25	28	32	36	40	45	50	56	63	70	80	90	100
key heigth h	14	16	18	20	22	25	28	32	32	36	40	45	50
for shaft diameters d1 (over÷to)	85 ÷ 95	95 ÷ 110	110 ÷ 130	130 ÷ 150	150 ÷ 170	170 ÷ 200	200 ÷ 230	230 ÷ 260	260 ÷ 290	290 ÷ 330	330 ÷ 380	380 ÷ 440	440 ÷ 500
groove width b	25	28	32	36	40	45	50	56	63	70	80	90	100
d2=d1+	14	16	18	21	23	26	28	32	32	36	40	45	50
depth t1	9	10	11	12	13	15	17	20	20	22	25	28	31
groove depth t2	5.4	6.4	7.4	8.4	9.4	10.4	11.4	12.4	12.4	14.4	15.4	17.4	19.5

DIN 6885-1 form B - ≈ weigth in kg x1000 pcs, (ρ=7,85 kg/dm³) - commercial items
key width b	2	3	4	5	6	8	10	12	14	16	18	20	22
key heigth h	2	3	4	5	6	7	8	8	9	10	11	12	14
nominal length l
6	0.188	0.423
8	0.251	0.565	1.01
10	0.314	0.707	1.26	1.95
12	0.377	0.848	1.51	2.35
14	0.44	0.989	1.76	2.75	3.94
16	0.502	1.13	2.01	3.14	4.52
18	0.565	1.27	2.26	3.53	5.09	7.93
20	0.628	1.41	2.51	3.92	5.65	8.8
22		1.55	2.76	4.32	6.22	9.67	13.8
25		1.77	3.14	4.91	7.07	11	15.7
28		1.98	3.52	5.5	7.91	12.3	17.6	12.1
32		2.26	4.02	6.28	9.04	14.1	20.1	24.1
36		2.54	4.52	7.06	10.2	15.8	22.6	27.1	35.6
40			5.02	7.85	11.3	17.6	25.1	30.1	39.6
45			5.65	8.83	12.7	19.8	28.3	33.9	44.5	56.5
50				9.81	14.1	22	31.4	37.7	49.5	62.8	77.7
56				11	15.8	24.6	35.2	42.2	55.4	70.3	87	106
63					17.8	27.7	39.6	47.5	62.3	79.1	97.9	119	152
70					19.8	30.8	44	52.8	69.2	88	109	132	169
80						35.2	50.2	60.3	79.1	100	124	151	193
90						39.6	56.5	67.8	89	113	140	170	218
100							62.8	75.4	98.9	126	155	188	242
110							69.1	82.9	109	138	171	207	266
125								94.2	124	157	194	235	302
140								106	138	176	218	264	338
160									158	201	249	301	387
180										226	280	339	435
200											311	377	484
220												414	532
250													604

DIN 6885-1 form B - ≈ weigth in kg x1000 pcs, (ρ=7,85 kg/dm³) - commercial items
key width b	25	28	32	36	40	45	50	56	63	70	80	90	100
key heigth h	14	16	18	20	22	25	28	32	32	36	40	45	50
nominal length l
70	192
80	220	281
90	247	317	407
100	275	352	452	565
110	302	387	497	622	760
125	343	440	565	706	863	1100
140	385	492	633	791	967	1240	1540
160	440	563	723	904	1110	1410	1760	2080
180	485	633	814	1020	1240	1590	1980	2340	2750
200	550	703	904	1130	1380	1770	2200	2600	3060	3800
220	604	774	995	1240	1520	1940	2420	2860	3370	4180	5520
250	687	880	1130	1410	1730	2210	2750	3250	3830	4750	6280	7880
280	769	985	1270	1580	1930	2470	3080	3640	4290	5320	7030	8820	11000
315		1130	1440	1810	2210	2820	3510	4170	4900	6090	7930	10100	12600
355			1630	2040	2480	3180	3950	4690	5510	6850	9030	11350	14200
400				2260	2760	3530	4400	5200	6120	7600	10040	12600	15700

Standard BS 4235-1

Taper Keys


Dimensions in mm - source BS 4235-1 Square parraller keys
Publication date: 02/1972
Shaft d nominal diameter	6 ÷ 8	8 ÷ 10	10 ÷ 12	12 ÷ 17	17 ÷ 22
section b x h	2 x 2	3 x 3	4 x 4	5 x 5	6 x 6
widht b nom	2	3	4	5	6
Shaft t1 nom	1.2	1.8	2.5	3	3.5
Hub t2 nom	1.4	1.8	2.3	2.8	-
Radius max	0.16	0.16	0.16	0.25	0.25
Radius min	0.08	0.08	0.08	0.16	0.16


Dimensions in mm - source BS 4235-1 rectangular parallel keys
Publication date: 02/1972
Shaft d nominal diameter	22÷30	30÷38	38÷44	44÷50	50÷58	58÷65	65÷75	75÷85	85÷95	95÷110	110÷130	130÷150	150÷170	170÷200	200÷230	230÷260	260÷290	290÷330	330÷380	380÷440	440÷500
section b x h	8x7	10x8	12x8	14x9	16x10	18x11	20x12	22x14	25x14	28x16	32x18	36x20	40x22	45x25	50x28	56x32	63x32	70x36	80x40	90x45	100x50
widht b nom	8	10	12	14	16	18	20	22	25	28	32	36	40	45	50	56	63	70	80	90	100
Shaft t1 nom	4	5	5	5.5	6	7	7.5	9	9	10	11	12	13	15	17	20	22	25	28	31	-
Hub t2 nom	3.3	3.3	3.3	3.8	4.3	4.4	4.9	5.4	5.4	6.4	7.4	8.4	9.4	10.4	11.4	12.4	12.4	14.4	15.4	17.4	19.5
Radius max	0.25	0.40	0.40	0.40	0.40	0.40	0.60	0.60	0.60	0.60	0.60	1.00	1.00	1.00	1.00	1.60	1.60	1.60	2.50	2.50	2.50
Radius min	0.16	0.25	0.25	0.25	0.25	0.25	0.40	0.40	0.40	0.40	0.40	0.70	0.70	0.70	0.70	1.20	1.20	1.20	2.00	2.00	2.00

Standard DIN 6885-3

Parallel Keys Shallow Pattern part 3

Dimensions in mm - source Din 6885-3 1956
Publication date: 02/1956 - Supersedes partially DIN 6885-1 edition 08/1943
key width b	5	6	8	10	12	14	16	18	20	22	25	28	32	36
key heigth h	3	4	5	6	6	6	7	7	8	9	9	10	11	12
for shaft diameters d1 (over÷to)	12 ÷ 17	17 ÷ 22	22 ÷ 30	30 ÷ 38	38 ÷ 44	44 ÷ 50	50 ÷ 58	58 ÷ 65	65 ÷ 75	75 ÷ 85	85 ÷ 95	95 ÷ 110	110 ÷ 130	130 ÷ 150
groove width b	5	6	8	10	12	14	16	18	20	22	25	28	32	36
d2	d1+3	d1+4	d1+5	d1+6	d1+6	d1+6	d1+7	d1+7	d1+8	d1+9	d1+9	d1+10	d1+11	d1+11.5
depth t1	1.9	2.5	3.1	3.7	3.9	4	4.7	4.8	5.4	6	6.2	6.9	7.6	8.3
groove depth t2	0.8	1.1	1.4	1.8	1.6	1.4	1.7	1.6	2	2.4	2.2	2.4	2.7	3

Din 6885-3 form B ≈ weigth in kg x1000 pcs, (ρ=7,85 kg/dm³) - commercial items
key width b	5	6	8	10	12	14	16	18	20	22	25	28	32	36
key heigth h	3	4	5	6	6	6	7	7	8	9	9	10	11	12
nominal length l
12	1.41
14	1.65	2.63
16	1.88	3.01
18	2.12	3.39	5.65
20	2.36	3.77	6.28
22	2.59	4.14	6.91	10.4
25	2.94	4.71	7.85	11.8
28	3.3	5.28	8.79	13.2	15.9
32	3.77	6.03	10	15.1	18.1
36	4.24	6.78	11.3	17	20.3	20.2
40	4.71	7.54	12.6	18.8	22.6	24.4
45	5.3	8.48	14.1	21.2	25.4	29.7	39.6
50	5.89	9.42	15.7	23.6	28.3	33	44	49.5
56	6.59	10.6	17.6	26.4	31.6	36.9	49.2	55.4	70.3
63		11.9	19.8	29.7	35.6	41.5	55.4	62.3	79.1	98
70		13.2	22	33	39.6	46.2	61.5	69.2	87.9	109	124
80			25.1	37.7	45.2	52.8	70.3	79.1	100	124	141	176
90			28.3	42.4	20.9	59.3	79.1	89	113	140	159	198	249
100				47.1	56.5	69.9	87.9	98.9	126	155	177	220	276	339
110				51.8	62.2	72.5	96.7	109	138	171	194	242	304	373
125					70.6	82.4	110	124	157	194	221	275	345	424
140					79.1	92.3	123	138	176	218	247	308	387	475
160						106	141	158	201	249	283	352	442	543
180							158	178	226	280	318	396	497	610
200								198	251	311	353	440	553	678
220									276	342	389	484	608	746
250										389	442	550	691	848
280											495	615	774	949
315												692	870	1070
355													981	1200
400														1360

Standard NF E22-177

Parallel keys. Dimensions.

Standard NF E27-656

Parallel keys

Standard DIN 6885-2

Parallel keys keyways - Deep pattern for machine tools Part 2

Dimensions in mm - source DIN 6885-2 Withdrawn
Publication date: 12/1967
width b	4	5	6	8	10	12	14	16	18	20	22	25	28	32	36	40
heigth h	4	5	6	7	8	8	9	10	11	12	14	14	16	18	20	22
for shaft diameters d1 (over÷to)	10 ÷ 12	12 ÷ 17	17 ÷ 22	22 ÷ 30	30 ÷ 38	38 ÷ 44	44 ÷ 50	50 ÷ 58	58 ÷ 65	65 ÷ 75	75 ÷ 85	85 ÷ 95	95 ÷ 110	110 ÷ 130	130 ÷ 150	150 ÷ 170
width b 3	4	5	6	8	10	12	14	16	18	20	22	25	28	32	36	40
d2 min	3	3.5	4	4.5	5.5	6	7	8	8.5	11	12	12	14	15	18	22
depth t	3	3.8	4.4	5.4	6	6	6.5	7.5	8	8	10	10	11	13	13.7	14
groove depth t2	1.1	1.3	1.7	1.7	2.1	2.1	2.6	2.6	3.1	4.1	4.1	4.1	5.1	5.2	6.5	8.2

DIN 6885-1 form B - ≈ weigth in kg x1000 pcs, (ρ=7,85 kg/dm³) - commercial items
key width b	4	5	6	8	10	12	14	16	18	20	22	25	28	32	36	40
key heigth h	4	5	6	7	8	8	9	10	11	12	14	14	16	18	20	22
nominal length l
10	1.15
12	1.40	2.14
14	1.65	2.54
16	1.90	2.93	4.16
18	2.15	3.32	4.73
20	2.40	3.71	5.29	8.05
22	2.65	4.11	5.86	8.92
25	3.03	4.70	6.71	10.3	14.4
28	3.41	5.29	7.55	11.6	16.3
32	3.91	6.07	8.68	13.4	18.8	22.2
36	4.41	6.85	9.84	15.1	21.3	25.2
40	4.91	7.64	10.9	16.9	23.8	28.2	36.6
45	5.54	8.62	12.3	19.1	27	32	41.5	52.2
50		9.60	13.7	21.3	30.1	35.8	46.5	58.5	71.7
56		10.8	15.4	24.9	33.9	40.3	52.4	66	81	97.9
63			17.4	27	38.3	45.6	59.3	74.8	91.9	111	141
70			19.4	30.1	42.7	50.9	66.2	83.7	103	124	158	177
80				34.5	48.9	58.4	76.1	95.7	118	143	182	205	260
90				39.9	55.2	65.9	86	109	134	162	207	232	296	369
100					61.5	73.5	95.9	122	149	180	231	260	331	421	521
110					67.8	81	106	134	165	199	255	287	366	466	578	701
125						92.3	121	153	188	227	291	328	419	534	662	804
140						104	135	172	212	256	327	370	471	602	747	908
160							155	197	243	293	376	425	542	692	860	1050
180								222	274	331	424	280	612	783	973	1180
200									305	369	473	535	682	873	1090	1360
220										406	521	589	675	964	1200	1460
250											593	672	859	1100	1370	1670

Parallel keys

Dimensions in mm - source Din 6885-1
Publication date: 08/1968 - Supersedes DIN 6885-1: 02/1956
key width b	2	3	4	5	6	8	10	12	14	16	18	20	22
key heigth h	2	3	4	5	6	7	8	8	9	10	11	12	14
for shaft diameters d1 (over÷to)	6 ÷ 8	8 ÷ 10	10 ÷ 12	12 ÷ 17	17 ÷ 22	22 ÷ 30	30 ÷ 38	38 ÷ 44	44 ÷ 50	50 ÷ 58	58 ÷ 65	65 ÷ 75	75 ÷ 85
groove width b	2	3	4	5	6	8	10	12	14	16	18	20	22
d2=d1+	2.5	3.5	4	5	6	8	8	8	9	11	11	12	14
depth t1	1.2	1.8	2.5	3	3.5	4	5	5	5.5	6	7	7.5	9
groove depth t2	1	1.4	1.8	2.3	2.8	3.3	3.3	3.3	3.8	4.3	4.4	4.9	5.4

Dimensions in mm - source Din 6885-1
key width b	25	28	32	36	40	45	50	56	63	70	80	90	100
key heigth h	14	16	18	20	22	25	28	32	32	36	40	45	50
for shaft diameters d1 (over÷to)	85 ÷ 95	95 ÷ 110	110 ÷ 130	130 ÷ 150	150 ÷ 170	170 ÷ 200	200 ÷ 230	230 ÷ 260	260 ÷ 290	290 ÷ 330	330 ÷ 380	380 ÷ 440	440 ÷ 500
groove width b	25	28	32	36	40	45	50	56	63	70	80	90	100
d2=d1+	14	16	18	21	23	26	28	32	32	36	40	45	50
depth t1	9	10	11	12	13	15	17	20	20	22	25	28	31
groove depth t2	5.4	6.4	7.4	8.4	9.4	10.4	11.4	12.4	12.4	14.4	15.4	17.4	19.5

Din 6885-1 form B - ≈ weigth in kg x1000 pcs, (ρ=7,85 kg/dm³) - commercial items
key width b	2	3	4	5	6	8	10	12	14	16	18	20	22
key heigth h	2	3	4	5	6	7	8	8	9	10	11	12	14
nominal length l
6	0.188	0.423
8	0.251	0.565	1.01
10	0.314	0.707	1.26	1.95
12	0.377	0.848	1.51	2.35
14	0.44	0.989	1.76	2.75	3.94
16	0.502	1.13	2.01	3.14	4.52
18	0.565	1.27	2.26	3.53	5.09	7.93
20	0.628	1.41	2.51	3.92	5.65	8.8
22		1.55	2.76	4.32	6.22	9.67	13.8
25		1.77	3.14	4.91	7.07	11	15.7
28		1.98	3.52	5.5	7.91	12.3	17.6	12.1
32		2.26	4.02	6.28	9.04	14.1	20.1	24.1
36		2.54	4.52	7.06	10.2	15.8	22.6	27.1	35.6
40			5.02	7.85	11.3	17.6	25.1	30.1	39.6
45			5.65	8.83	12.7	19.8	28.3	33.9	44.5	56.5
50				9.81	14.1	22	31.4	37.7	49.5	62.8	77.7
56				11	15.8	24.6	35.2	42.2	55.4	70.3	87	106
63					17.8	27.7	39.6	47.5	62.3	79.1	97.9	119	152
70					19.8	30.8	44	52.8	69.2	88	109	132	169
80						35.2	50.2	60.3	79.1	100	124	151	193
90						39.6	56.5	67.8	89	113	140	170	218
100							62.8	75.4	98.9	126	155	188	242
110							69.1	82.9	109	138	171	207	266
125								94.2	124	157	194	235	302
140								106	138	176	218	264	338
160									158	201	249	301	387
180										226	280	339	435
200											311	377	484
220												414	532
250													604

Din 6885-1 form B - ≈ weigth in kg x1000 pcs, (ρ=7,85 kg/dm³) - commercial items
key width b	25	28	32	36	40	45	50	56	63	70	80	90	100
key heigth h	14	16	18	20	22	25	28	32	32	36	40	45	50
nominal length l
70	192
80	220	281
90	247	317	407
100	275	352	452	565
110	302	387	497	622	760
125	343	440	565	706	863	1100
140	385	492	633	791	967	1240	1540
160	440	563	723	904	1110	1410	1760	2080
180	485	633	814	1020	1240	1590	1980	2340	2750
200	550	703	904	1130	1380	1770	2200	2600	3060	3800
220	604	774	995	1240	1520	1940	2420	2860	3370	4180	5520
250	687	880	1130	1410	1730	2210	2750	3250	3830	4750	6280	7880
280	769	985	1270	1580	1930	2470	3080	3640	4290	5320	7030	8820	11000
315		1130	1440	1810	2210	2820	3510	4170	4900	6090	7930	10100	12600
355			1630	2040	2480	3180	3950	4690	5510	6850	9030	11350	14200
400				2260	2760	3530	4400	5200	6120	7600	10040	12600	15700

Full list of Suppliers of Parallel keys

Italy|Distributor

Benbolts Di Bencini S.R.L.

Wholesaler/distributor of screws, nuts and bolts built in different materials, from plain steel to high resistance steel, to stainless steel and brass

Italy|Distributor

C...

Manufacturer of joints-keys, spherical bearings

Germany|Distributor

C...

Manufacturer of parallel keys, woodruff keys, taper keys, taper keys with gip head, tangential keys and distritubor of bright key steel

Turkey|Distributor

E...

Manufacturer of feather keys and woodruff keys

France|Distributor

G...

Manufacturer of pins and parallel keys

Germany|Distributor

Manufacturer of bearing lock nuts, parallel keys, precision turned parts for all indutrial branches, according to company standards, DIN standard, as well as customer-specific solutions based on samples

Italy|Distributor