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Weldless Eyenuts & Lifting Eyenuts Standards

Weldless Eyenuts & Lifting Eyenuts Standards

Weldless Eyenuts & Lifting Eyenuts Standards

Hi Folks,
       Have a small problem at work.  The mechanics use weldless eyenuts normally used for pipe hangers as rigging eyenuts as well.  I told them that they are more than likely made to different standards and their uses should not be mixed up.  They only stock weldless eyenuts in their stores right now.
       I have seen the eyenuts in a Crosby rigging catalog, but they do not quote a standard.  I have also seen eyenuts in a pipe hanger supply catalog, again not quoting any standards.
       The main physical difference that I know is that the bottom of a rigging eyenut has a larger land machined on the bottom of it.
       Anyone know where the codes or standards are for these ?

RE: Weldless Eyenuts & Lifting Eyenuts Standards

Specification for eyebolts for lifting purposes
Document Number: BS 4278:1984
British Standard
ISBN: 0 580 13801 1

Standard Specification for Carbon Steel Lifting Eyes
Document Number: ASTM A489-03
ASTM International

Eyebolts for general lifting purposes
Document Number: ISO 3266
International Organization for Standardization

David Baird
Sr Controls Engineer

EET degree.

Journeyman Electrician.

RE: Weldless Eyenuts & Lifting Eyenuts Standards


Weldless eyenuts are made to MSS and Federal Codes and Standards...

I believe the ones you refer to are made to MSS-SP-69...

The components have a break strength of a couple of times the rated load (see MSS-SP69 for more info)

See page 130 of this link:



  "People ask my why I do this, and I tell them that I have the heart of a small boy ... and I keep it in a jar on my desk."      Stephen King  

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