Steel Wing Nut
Commercial mild-steel wing nuts to DIN 315. Hand-tightened fasteners for covers, hoppers, jigs, and temporary clamps — no wrench required. Listed M4–M24.
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Available Sizes & Finishes
9 sizes available
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Applications & Selection Guide
Commercial mild-steel wing (butterfly) nuts to DIN 315. Two integral wings allow tightening and release by hand — no spanner. Metric coarse thread, listed M4–M24. These are not ISO 898 property-class nuts.
Use on inspection covers, hoppers, jigs, laboratory fixtures, and any joint that is opened often by hand. They are the wrong fastener for structural or high-preload joints — clamp force is limited by finger torque and the ungraded material. For a wrench-tight joint that still needs occasional removal, a standard hex nut is clearer.
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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
Commercial mild steel
Manufacturing Standard
DIN 315
Material Type
Steel
Category
Wing Nut
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