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Manufacturers of Stainless Steel  and High Tensile Fasteners

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Fasteners / Nuts

Wing Nut

Stainless Steel Wing Nut - Grade 202, 304, 316 , A2, A2-70

A wing nut, also referred to as a butterfly nut or thumb nut, provides convenient hand tightening or loosening capabilities thanks to its two protruding “wings” or tabs. These nuts are often utilized in situations where frequent adjustments or disassembly are necessary, such as furniture assembly and machine maintenance.

Wing Nuts Technical Specification

Feature Description
Design Two flat wings for hand tightening
Material Grades SS 304, SS 316 (marine-grade), SS 201
Standards DIN 315, ANSI/ASME, ISO
Sizes (Metric) M3 to M16 or custom
Sizes (Inch) #6-32 to 5/8"-11
Finish Bright finish, passivated
Corrosion Resistance Excellent in wet, acidic, and marine environments
Reusable Yes
  • SS 304 is the most commonly used grade for general stainless fasteners.
  • SS 316/316L is ideal for marine, saline, or acidic environments due to added molybdenum.
  • SS 201 is a cost-effective option with limited corrosion resistance.
Material Grade Composition Highlights Properties Applications
Stainless Steel SS 304 18% Cr, 8% Ni Excellent corrosion resistance, good strength, food-safe General-purpose, indoor/outdoor, food equipment
Stainless Steel SS 316 16–18% Cr, 10–14% Ni, 2–3% Mo Superior corrosion resistance (chloride/marine environments) Marine, chemical, coastal & medical applications
Stainless Steel SS 316L Low-carbon version of SS 316 Same as 316 but better weldability and resistance to sensitization Welded assemblies, marine, pharma, medical
Stainless Steel SS 201 16–18% Cr, 3.5–5.5% Ni, high manganese Economical, less corrosion resistant than 304/316 Light-duty, non-marine, decorative uses

 Stainless steel wing nuts are hand-tightened nuts with two large “wings” for easy manual fastening. Made from corrosion-resistant stainless steel, they are ideal for applications requiring frequent assembly/disassembly in harsh or outdoor environments.

Material

Stainless Steel

Composition Highlights

18% Cr, 8% Ni

Sizes (Metric)

M3 to M16

Sizes (Inch)

#6-32 to 5/8"-11

Design
Wing nuts are designed with two projecting pieces, also known as wings, on both sides of the threaded hole. This design enables a secure hold and effortless manual turning.
Functionality
These devices are intended for manual tightening and loosening, making them well-suited for instances where tools are not easily accessible or frequent modifications are required.
Materials
Wing nuts are commonly crafted from durable materials such as steel, stainless steel, or brass in order to guarantee their strength and long-lasting nature.

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