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20 years professional hardware manufacturer - JM Hardware

ISO 898-2

Standard for Nut

Grade

Hardness

Dimensional style of nut

Nominal nut size

Proof Load Stress ksi

Head Marking

in.

Non-Zinc coated Nuts

Zinc coated Nuts

ISO 898-2 2009(DIN934)

4

over M16 117-302HV

510MPa

/

6

up to M16 15-302HV,over M16 170-302HV

600-720MPa

/

8

M4 180-302,up to M16 200-302(HRB94-31.5),up to M39 233-353HV

800-920MPa

ISO 898-2 1

10

272-353HV

1040-1060MPa

ISO 898-2 2

12

272-353HV

1140-1170MPa

ISO 898-2 3

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