Torque Recommendations for Metric Systems

Metric
Recommended Spiralock Applied Torque - 75% of Yield
Size	ASTM A563M/ISO 898-2 Class 9.8					ASTM A563M/ISO 898-2 Class 10.9					ASTM A563M/ISO 898-2 Class 12.9
	650	MPa, Proof Load Stress				830	MPa, Proof Load Stress				970	MPa, Proof Load Stress
	Dry		Lubricated		Units	Dry		Lubricated		Units	Dry		Lubricated		Units
	k=	0.2	k=	0.15		k=	0.2	k=	0.15		k=	0.2	k=	0.15
	Min.	Max.	Min.	Max.		Min.	Max.	Min.	Max.		Min.	Max.	Min.	Max.
M2.5x0.45	0.9	1.0	0.7	0.7	Nm	1.2	1.3	0.9	0.9	Nm	1.4	1.5	1.0	1.1	Nm
M3x0.5	1.6	1.8	1.2	1.3	Nm	2.1	2.3	1.6	1.7	Nm	2.4	2.6	1.8	2.0	Nm
M3.5x0.6	2.5	2.8	1.9	2.1	Nm	3.2	3.5	2.4	2.7	Nm	3.8	4.1	2.8	3.1	Nm
M4x0.7	3.8	4.1	2.8	3.1	Nm	4.8	5.2	3.6	3.9	Nm	5.6	6.1	4.2	4.6	Nm
M4.5x0.75	5.5	6.0	4.1	4.5	Nm	7.0	7.7	5.3	5.7	Nm	8.2	9.0	6.2	6.7	Nm
M5x0.8	7.6	8.3	5.7	6.2	Nm	9.7	10.6	7.3	7.9	Nm	11.3	12.4	8.5	9.3	Nm
M6x1.0	12.9	14.1	9.7	10.6	Nm	16.5	18.0	12.4	13.5	Nm	19.3	21.1	14.5	15.8	Nm
M7x1.0	21.7	23.6	16.2	17.7	Nm	27.7	30.2	20.7	22.6	Nm	32.3	35.3	24.2	26.4	Nm
M8x1.0	33.6	36.7	25.2	27.5	Nm	42.9	46.8	32.2	35.1	Nm	50.1	54.7	37.6	41.0	Nm
M8x1.25	31.4	34.3	23.6	25.7	Nm	40.1	43.8	30.1	32.8	Nm	46.9	51.1	35.2	38.4	Nm
M9x1.25	46.4	50.7	34.8	38.0	Nm	59.3	64.7	44.5	48.5	Nm	69.3	75.6	52.0	56.7	Nm
M10x1.25	65.6	71.6	49.2	53.7	Nm	83.8	91.4	62.9	68.6	Nm	97.9	107	73.5	80.1	Nm
M10x1.5	62.2	67.8	46.6	50.9	Nm	79.4	86.6	59.6	65.0	Nm	92.8	101	69.6	75.9	Nm
M12x1.25	118	129	88.9	97.0	Nm	151	165	113	124	Nm	177	193	133	145	Nm
M12x1.75	108	118	81.3	88.7	Nm	138	151	104	113	Nm	162	177	121	132	Nm
M14x1.25	194	212	146	159	Nm	248	270	186	203	Nm	290	316	217	237	Nm
M14x1.5	187	204	140	153	Nm	239	260	179	195	Nm	279	304	209	228	Nm
M14x2.0	173	189	130	142	Nm	221	241	166	181	Nm	259	282	194	212	Nm
M16x1.5	287	313	215	235	Nm	366	400	275	300	Nm	428	467	321	350	Nm
M16x2.0	269	293	202	220	Nm	343	375	257	281	Nm	401	438	301	328	Nm
M18x1.5	417	455	313	342	Nm	533	581	400	436	Nm	623	680	467	510	Nm
M18x2.5	372	405	279	304	Nm	474	518	356	388	Nm	554	605	416	454	Nm
M20x1.5	582	635	437	476	Nm	744	811	558	608	Nm	869	948	652	711	Nm
M20x2.5	525	573	394	430	Nm	670	731	503	549	Nm	784	855	588	641	Nm
M22x1.5	779	850	584	637	Nm	994	1085	746	814	Nm	1162	1268	872	951	Nm
M22x2.5	716	781	537	586	Nm	914	997	686	748	Nm	1068	1165	801	874	Nm
M24x3.0	907	990	681	742	Nm	1159	1264	869	948	Nm	1354	1477	1016	1108	Nm
M27x3.0	1330	1451	998	1088	Nm	1699	1853	1274	1390	Nm	1985	2166	1489	1624	Nm
M28x1.5	1668	1820	1251	1365	Nm	2130	2323	1597	1743	Nm	2489	2715	1867	2036	Nm
M30x2.0	1999	2180	1499	1635	Nm	2552	2784	1914	2088	Nm	2983	3254	2237	2440	Nm
M33x2.0	2693	2937	2019	2203	Nm	3438	3751	2579	2813	Nm	4018	4384	3014	3288	Nm
M33x3.5	2455	2678	1841	2008	Nm	3134	3419	2351	2565	Nm	3663	3996	2747	2997	Nm
M36x4.0	3153	3440	2365	2580	Nm	4027	4393	3020	3294	Nm	4706	5134	3529	3850	Nm
M39x4.0	4081	4452	3061	3339	Nm	5212	5685	3909	4264	Nm	6091	6644	4568	4983	Nm