H-Lock High Strength Structural Rivet

Structural Blind Rivets

Structural Blind Rivets are designed to fix elements where a high resistance to both tensile and shear strengths are required

Structural Rivets exceptionally strong once set. The high strength is as a result of the mechanically locked stem.

The locking occurs during the riveting process when the mandrel has traveled the full length of the rivet body. The strength comes from the mandrel being locked in place and completely filling the space along the shear plane from the primary through to the secondary side of the head.

When set properly, this results in a flush break, where the mandrel is broken nearly even with the head.

Structural Rivets are primarily used in the transportation industries like Truck, Trailer, RV and Locomotive, however it is often used commercially as well.

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.

H-LOCK Structural Rivet  

This rivet also expands under the closing head during setting and creates an extremely powerful grip. Grooved mandrel ensures safe locking between the elements without making the clapping sound. With a properly prepared drill hole, this rivet is also splash-proof.

Characteristics
• suitable for high loads
• expands under the closing head to give more grip
• the mandrel head is held captive within rivet body (mechanical mandrel locking)
• the riveting is splash proof
• high shearing and tensile forces
• extremely suitable for thin sheet material.

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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 Rivets	YES	CARE	NO	NO	NO
Coated Steel Rivets	NO	YES	NO	NO	NO
Stainless Steel Rivets	CARE	CARE	YES	YES	YES
Copper Rivets	NO	NO	YES	YES	YES
Monel Rivets	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