ISO Metric Thread Minimum Ultimate Tensile Loads

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The table below show minimum ultimate tensile loads for bolts, nuts and studs with an ISO metric coarse and fine pitch thread in sizes M3 to M39.

According to EN ISO 898-1.

Threada
d		Nominal stress area
As,nomb mm2		Property class
4.64.85.65.86.88.89.810.912.9/12.9
Minimum ultimate tensile load, Fm,min (As,nom x Rm,min), N
M35,03201021102510262030204020453052306140
M3,56,78271028503390353040705420610070508270
M48,783510369043904570527070207900913010700
M514,25680596071007380852011350128001480017300
M620,18040844010000104001210016100181002090024500
M728,9116001210014400150001730023100260003010035300
M836,614600 c1540018300 c190002200029200 c3290038100 c44600
M105823200 c2440029000 c302003480046400 c5220060300 c70800
M1284,3337003540042200438005060067400 d7590087700103000
M14115460004830057500598006900092000 d104000120000140000
M161576280065900785008160094000125000 d141000163000192000
M1819276800806009600099800115000159000-200000234000
M2024598000103000122000127000147000203000-255000299000
M22303121000127000152000158000182000252000-315000370000
M24353141000148000176000184000212000293000-367000431000
M27459184000193000230000239000275000381000-477000560000
M30561224000236000280000292000337000466000-583000684000
M33694278000292000347000361000416000576000-722000847000
M36817327000343000408000425000490000678000-850000997000
M39976390000410000488000508000586000810000-10200001200000
Thread d x PNominal Stress Area As,noma mm2Property Class
4.64.85.65.86.88.89.810.912.9/12.9
Minimum Ultimate Tensile Load, Fm,min (As,nom x Rm,min), N
M8x139,2157001650019600204002350031360353004080047800
M10x1,2561,2245002570030600318003670049000551006360074700
M10x164,5258002710032300335003870051600581006710078700
M12x1,588,13520037000441004580052900705007930091600107000
M12x1,2592,13680038700461004790055300737008290095800112000
M14x1,51255000052500625006500075000100000112000130000152000
M16x1,516766800701008350086800100000134000150000174000204000
M18x1,52168640090700108000112000130000179000-225000264000
M20x1,5272109000114000136000141000163000226000-283000332000
M22x1,5333133000140000166000173000200000276000-346000406000
M24x2384154000161000192000200000230000319000-399000469000
M27x2496198000208000248000258000298000412000-516000605000
M30x2621248000261000310000323000373000515000-646000758000
M33x2761304000320000380000396000457000632000-791000928000
M36x3865346000363000432000450000519000718000-9000001055000
M39x31030412000433000515000536000618000855000-10700001260000

a Where no thread pitch is indicated in a thread designation, coarse pitch is specified.

 

b To calculate As,nom, see 9.1.6.1.

 

c For fasteners with thread tolerance 6az in accordance with ISO 965-4 subject to hot dip galvanizing, reduced values in accordance
with ISO 10684:2004, Annex A, apply.

 

d For structural bolting 70 000 N (for M12), 95 500 N (for M14) and 130 000 N (for M16).

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