Available Sizes & Finishes
16 sizes available
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Applications & Selection Guide
ISO 898-2 class 5 hex flange nuts to DIN 6923 / ISO 4161. A washer-shaped flange under the hex spreads clamp load so a separate washer is often unnecessary. Metric coarse, listed M4–M36. Pair with class 4.8 bolts.
Useful on thin sheet, slotted holes, and painted surfaces where a standard hex nut would dig in. Serrated flanges (where supplied) add a modest resistance to rotation; they are not a substitute for a prevailing-torque lock nut on severe vibration. Keep class matched to 4.8 fasteners.
Select metric sizes above. Quote with quantity, coating, and destination; matching 4.8 flange or hex bolts can go in the same enquiry.
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 →Product Information
Material Grade
ISO 898-2 class 5
Manufacturing Standard
DIN 6923 / ISO 4161
Material Type
Steel
Category
Flange Nut
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