Talk:Rivet

Some articles link here trying to refer to a culture or fashion alongside punk, goth and steampunk.

How are rivets measured? Does a 1/8" rivet have a 1/8" radius, diameter, or circumference?

Diameter (of the shank). --Simian, 2005-10-27, 05:06 Z

In the aircraft industry (at least in the United States) rivet size is specified by a number that is a multiple of 1/32 of an inch. The common sizes are 3, 4, 5, 6, and 8. These would be rivets that are 3/32, 1/8, 5/32, 3/16, and 1/4 inches in diameter. For example, a NASM20470AD6 rivet would be a solid rivet with a universal head and a 3/16-inch diameter shank. "NASM20470" indicates the standard that defines the rivet which was known as MS20470 before it was adopted by NAS. "AD" indicates the rivet material which is one of the weaker but easier to drive aluminum alloys. On a drawing, this rivet would be called out as a "BJ6" which is a fastener encoding defined by NAS523.--Jebix (talk) 01:20, 17 November 2008 (UTC)

I have seen in some older patents that "rivet" seems to be used as a term to describe the bending-down of metal by hammering, more than a particular type of fastener. -- User:axh, 2006-09-20, 11:32 EST

I have a friend who is building a headlamp, and at several points, he needs to rivet together two pieces of aluminum. What rivets would be best for that, and how would he use them?

Picture

Has anybody a picture of a pneumatic rivet hammer looks similar to a Jackhammer.--134.76.234.75 (talk) 12:33, 28 January 2008 (UTC)

Self Pierce Riveting

Self Pierce Rivets (often shortened to SPR) are designed to join two or more sheets of material together (usually metal) without the need to have a pre-existing hole - hence the name. As the rivet is driven into the materials it gradually flares within the sheet materials (with the assistance of an upsetting die) locking the material together without piercing the lower material. Typical riveting cycle time ranges from 1 to 4 seconds.

While in use in a number of industries, it is most widely known in the Automobile industry. As more automobile manufacturers look towards weight-saving, self pierce rivets are being used more due to the move towards lighter materials such as Aluminium. Unfortunately Aluminium is more difficult to spot weld than Steel, necessitating the use of self pierce rivets. The most widely publicised example is the Mark 3 Jaguar XJ8 (also known as the X350).

• The above is a small piece on Self Pierce Rivets, based on experience and the following websites to make it 'cite-able' I'm just not that experienced with WP so if someone could add it to the main page correctly with citations I'd appreciate it. Sorry but couldn't find any non-CP images.

http://www.emhart.com/products/spr.asp http://www.henrob.co.uk/languages/english/history.htm —Preceding unsigned comment added by Co fragment (talk • contribs) 09:40, 10 July 2008 (UTC)

Names for blind rivets

In Australia, I've only ever heard of these being referred to as "pop rivets". Obviously referring to how the mandrel pops out of the assembly. Is it worth mentioning this? 59.154.17.6 (talk) 01:47, 1 October 2008 (UTC)

Also a common name in the USA - Leonard G. (talk) 03:33, 1 October 2008 (UTC)

P.S. Now properly noted in the blind rivet section (note that pop rivet redirects here).

The designer of the Zenith line of kit aircraft and owner of the Zenith Aircraft Company has this to say about pop rivets in his article about aircraft design [1].

First of all, let us understand that a "pop" rivet is a blind rivet, but a blind rivet is not necessarily a pop rivet. ("Pop" rivet is a brand name manufactured by USM - United Shoe Machine - and obviously a "shoe" rivet is not ideal for aircraft use.)

Just google "pop rivet" and you find that it is a brand name now owned by Emhart Teknologies a Black & Decker company.--Jebix (talk) 00:57, 17 November 2008 (UTC)

"POP" is a brand of blind rivets (http://www.emhart.com/) and is a registered trademark (#72415924).

Q. Are high-strength bolts are a better choice than rivets for many uses?

A. That question can be answered in two ways, in terms of economics and performance. High strength bolts are "A better choice" considering the cost of labor and construction. While they are much more expensive to manufacture, the installed cost is much lower due to the increased safety and reduced efforts required by workers to install bolts. Rivets are a low cost product, but expensive to install. Bolts are a high priced product, but very cost effective to install. Obviously, the cost to install is higher then the cost to produce. As far as performance, there are few products that can match the installed strength, key features, and added benefits of a rivet. On the otherhand, newer technologies are becoming more accepted as a cost effective alternative.

The Older Method - Hot Riveting - The old riveting method required a low cost rivet, to be heated to a mallable temperature at the point of use. This required an oven running at all times during the installtion process (expensive). In addition, these hot rivets would need to be passed to the installers via a throw and catch method, which is dangerous at high heights. During installation, the hot rivet would be pneumatically hammered into place. This action caused the rivet to swell or radially expand within the hole. In addition a mushroomed headform is created on both sides. After it is applied and as the rivet cools, the steel rivet "shrinks" and the two heads squeeze together. This dramatically increases the tension force and the swelling of the rivet in the hole dramatically increases shear load.

The Newer Method - High Strength Bolts - Recently the development of new steels allowed for the use of high strength bolts. The are pre heat treated to a hardness that is capable of supporting the load and they are easy to remove if neccessary. The are easy to transport and easy to install buy using a pneumatic torque control driver. As far as economy the total installed cost is less, however, there are some direct comparisons that cannot be made to rivets. High strength bolts do not swell in the hole and do not shrink as rivets do. Additionally, the torque of the installation tool is very important and if over torqued can damage the threads reducing strength. Bolts and nuts can be removed easily and can also vibrate loose over time. The space between the bolt and the hole wall is a crevace and as a result is difficult to prevent oxidation or rust. As a general rule, high strength bolts can be used as long as they have a tension control feature and is widely accepted as an alternative to riveting.

Only the true test of time will tell its effectiveness. The brooklyn bridge is still standading and is one of the strongest bridges in the world. Rivetpro (talk) 05:05, 29 January 2009 (UTC)RIVETPRO —Preceding unsigned comment added by Rivetpro (talk • contribs) 04:56, 29 January 2009 (UTC)

size

size should be explain by digram

Diagrams

This page could use some good diagrams showing the various rivet types in cross-section.--Hooperbloob 04:00, 7 August 2005 (UTC)

I agree that diagrams (especially detailing how blind rivets work) would go a long way towards improving this article. I am NOT suggesting that the following image by used, but it is an excellent example of the kind of simple animated GIF that is needed: [2] 68.8.202.217 (talk) 00:04, 1 June 2009 (UTC)

Explosive rivets

The article does not mention them. Google knows them. Were they a German invention?--SilasW (talk) 20:56, 13 June 2009 (UTC)

Friction-lock rivets

The article does not descibe them--SilasW (talk) 20:57, 13 June 2009 (UTC)

Health and Safety Fail...

People THROWING red-hot rivets fresh from a furnace around building sites? This is either a joke or needs explaining... 137.205.138.179 (talk) 17:14, 7 May 2011 (UTC)

See: http://www.criticalpast.com/video/65675054482_Tennessee-Valley-Authority_construction-of-dam_power-generation_United-States-flag and http://www.fotosearch.com/CRT706/18www/ Wizard191 (talk) 18:09, 9 May 2011 (UTC)

I stand corrected! Never encountered this before. 137.205.138.179 (talk) 23:44, 9 May 2011 (UTC)

The table describing Al. Al. rivets

I was wondering why the table describing aluminium alloy rivets, their alphabetical letter, driven condition and markings is in the friction type rivet section. These codes are use by the aerospace industry to describe plain rivets, not friction type rivets. 173.177.247.69 (talk) 23:39, 3 April 2012 (UTC)