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Applications & Selection Guide
ISO 898-2 property class 8 hexagon nuts to DIN 934 / ISO 4032 — quenched and tempered carbon steel, metric coarse thread, standard hex height. Class 8 is the default high-tensile nut for class 8.8 bolts and 8.8 threaded rod. Listed M3–M80.
Specify class 8 nuts throughout machinery, conveyor frames, racking, and general load-bearing steelwork that uses 8.8 fasteners. A class 5 nut under an 8.8 bolt is a common specification error. For vibrating plant use DIN 985 class 8 (nylon) or DIN 980 class 8 (all-metal) lock nuts; for pretensioned structural HV sets use DIN 6915, not this nut. Hardened washers as the joint design requires.
Request a quote with sizes, quantities, finish (plain, zinc, or HDG), and delivery country. Matching 8.8 bolts and washers can be added to the same cart.
Technical guides
Bolt grades and sizes: 8.8, 10.9, 12.9, A2 and A4, and metric hex bolt dimensions
What the property classes 4.8, 8.8, 10.9 and 12.9 and stainless A2-70 and A4-70 mean, minimum strength and tensile loads, metric thread pitch and hex head sizes, DIN 933 vs DIN 931, and which nut goes with which bolt.
Read the guide →Nut and washer types compared: hex, lock, flange, castle, coupling, cap and HV nuts, flat, spring and structural washers, with their standards
How hex, thin, nylon-insert and all-metal lock, flange, castle, coupling, cap, wing and HV nuts differ, which nut class goes with which bolt, and when to use DIN 125, DIN 127, DIN 7989 and DIN 6916 washers.
Read the guide →Threaded rod sizes and weights: DIN 975 / DIN 976-1 metric rod from M4 to M64
Thread pitch, stress area and weight per metre of metric threaded rod from M4 to M64 in carbon steel class 4.8 and 8.8 and in A2 and A4 stainless steel.
Read the guide →Product Information
Material Grade
ISO 898-2 class 8
Manufacturing Standard
DIN 934 / ISO 4032
Material Type
Steel
Category
Hex Nut
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