Hex Nuts vs. Wing Nuts
Comparing 2 standards across 11 specifications. 11 key differences identified.
The Standard Hex Nut (standardized under ISO 4032, DIN 934, and ASME B18.2.2) is a 6-sided internal-threaded mechanical fastener. Paired with mating machine screws and structural bolts, it converts rotational tightening torque into axial clamping preload across industrial and architectural assemblies.
The Wing Nut (Butterfly Nut, standardized under DIN 315 and ASME B18.6.9) features two large ergonomic metallic side projections ("wings") extending vertically from the central threaded boss. Designed for rapid, tool-free tightening and loosening by hand, it is the standard fastener on stage lighting C-clamps, drum set cymbal stands, and battery terminals.
Specification Comparison Table
11 Parameters| Parameter / Spec | ||
|---|---|---|
|
Standard Specifications
|
ISO 4032 (Standard style 1) / DIN 934 / ASME B18.2.2 | DIN 315 (Type D ductile cast / Type F forged) / ASME B18.6.9 (Type A/B/C) |
|
Geometry
|
6-sided regular hexagonal prism with internal tapped thread and double chamfered faces | — |
|
Nominal Height Ratio
|
Height ≈ 0.8× Nominal Diameter (m ≈ 0.8D) | — |
|
Metric Property Classes
|
Class 6, Class 8 (for 8.8 bolts), Class 10 (for 10.9 bolts), Class 12 (for 12.9 bolts) | — |
|
Imperial Strength Grades
|
Grade 2 (plain), Grade 5 (dot markings), Grade 8 (corner dots/notches) | — |
|
Jam Nut Variant
|
ISO 4035 / DIN 439 (Thin half-height hex nut used for locking) | — |
|
Wing Geometry
|
— | Two opposing curved radial wings for manual two-finger leverage |
|
Tightening Method
|
— | 100% Tool-free manual finger tightening |
|
Common Materials
|
— | Stainless steel (A2/A4), zinc-plated malleable iron, brass, nylon plastic |
|
Clamping Torque Limitation
|
— | Low manual torque (~1.5 to 5 N·m depending on finger grip strength) |
|
Primary Applications
|
— | Drum kits (cymbal stands), stage theatrical lighting clamps, air filter covers, marine battery terminals |