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J C Gupta & Sons

J C Gupta & Sons

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Large Flange Blind Rivets

Open End “STANDARD” Blind Rivets

General purpose rivet available in a wide range of materials and head styles. Suitable for applications with normal load bearing requirements. By far the most commonly used style of blind rivet due to the ease of use and low initial cost.

 

 

 

 

 

 

Large Flange

The large flange blind rivets are very useful for joining low density materials. In particular when the softer material is on the front side, the large flange spreads the load over a larger area and prevents the rivet from penetrating the material.

 

 

Available in a number of material combinations.

Rivet Body

Aluminium – Lightweight with good corrosion resistance.

Steel – Stronger than Aluminium with a “flash” coating of Zinc. Low corrosion resistance.

Stainless Steel A2 – Good Strength and excellent corrosion resistance.

Stainless Steel A4 – Good Strength and increased corrosion resistance

Copper – Relatively soft. Excellent corrosion resistance and conductivity.

Monel – The strongest blind rivet material with excellent corrosion resistance and conductivity. Also excellent high temperature suitability.

Download Datasheets

Aluminium – Steel                    Download-Datasheet AL-ST

Steel- Steel                              Download-Datasheet ST-ST

Stainless Steel – Stainless Steel Download-Datasheet A2-A2

 

Used extensively for fixing exterior composite panels – generally known as Fundermax after the company that pioneered these laminates.

Also available as Epoxy head painted option with a number of colours.

 

 

 

 

 

Dome Head Rivets LF AL-ST Black – Download Datasheet

Dome Head Rivets LF AL-ST White- Download Datasheet


Material Usage Guide

Galvanic Corrosion • When dissimilar metals come into contact in the presence of an electrolyte, a galvanic action occurs which corrodes one metal at a faster rate and the other more slowly. This phenomenon can cause major riveted joint failures and care must be taken to avoid the occurrence. The following table is a guide.

METAL JOINED
RIVET MATERIAL↓ Aluminium Coated Steel Stainless Steel Copper Brass
Aluminium YES CARE NO NO NO
Coated Steel NO YES NO NO NO
Stainless Steel CARE CARE YES YES YES
Copper NO NO YES YES YES
Monel NO NO YES YES YES
YES Compatible
NO Incompatible – Avoid contact with each other
CARE Use with care. Painting metals will help

Hence,

1) Select materials that are as close together as possible in the Galvanic Series Chart.
2) Provide a barrier between the two metals, such as paint, non-metallic washer or gaskets.
3) Design the fastener as the cathode so the cathodic area is small as compared to the anodic area.
4) Use a metallic finish on the fastener that is close on the chart to the mating material.

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