eye bolt, us shoulder type machinery eye
bolt, bs 529
collared eye nut din 580 din 582 eye bolt eye nut
Store and handle eyebolts correctly.
Inspect eyebolts before use and before placing into storage.
Select the type pattern eyebolt for the application.
Ensure that the eyebolt and tapped hole threads are compatible and
strong enough for the load.
Correctly align the plane of the eye using shims where necessary.
Ensure that the collar is fully seated when hand tight.
Use tommy bars, grips or wrenches to tighten eyebolts.
Use dynamo eyebolts for angular loading.
Use a single eyebolt to lift a load that is free to rotate.
Reeve slings through the eyes, links or shackles fitted to pairs of
Force hooks or other fittings into the eye; they must fit freely.
Shock load eyebolts.
Selecting the Correct
Eyebolts to BS 4278 are available in
three standard types, eyebolt with link, collar eyebolt and dynamo
eyebolt. Select the eyebolt to be used and plan the lift taking the
following into account:
Type of eyebolt - eyebolt with link for all general purpose
applications, collar eyebolt for most general duties, dynamo eyebolt
only where a truly axial load is guaranteed. (A collar eyebolt
fitted with a link through the eye must always be considered as a
collar eyebolt and not as an eyebolt with link.)
Capacity - (rating eyebolts for angular loading) It is necessary to
reduce the SWL by the following factors when using eyebolts with two
Included angle α
of sling legs
Eyebolt with link 1.0 0.8 0.63
Collar eyebolt 0.63 0.4 0.25
Storing and Handling
Never return damaged eyebolts to
storage. They should be dry, clean and protected from corrosion.
Care must be taken to protect threads from damage whilst in store.
Where possible use removable plugs to exclude debris from tapped
Using Eyebolts Safely
Do not attempt lifting operations
unless you understand the use and limitations to use of the
equipment, the slinging procedures and the mode factors to be
Do not use defective eyebolts. Check the thread of both the eyebolt
and hole, ensure they are compatible, fully formed, of sufficient
length, undamaged and clear of any debris which may prevent proper
Ensure the contact surface around the hole is flat, clean and
perpendicular to the thread axis. Tighten the eyebolt down firmly by
hand. The eye must be in the correct plane and the collar must sit
evenly on the contact surface. Use shims but do not machine the
collar or over tighten to achieve this.
A hook may be engaged directly into the eye of a dynamo eyebolt or
the link of an eyebolt with link. Collar eyebolts must be fitted
with a shackle or link to accept hooks. The hooks must fit freely so
do not wedge or force them into position.
Never reeve a sling through the eyes, links or shackles fitted to
eyebolts used in pairs as this will impose a severe resultant load
to the eyebolts.
Dynamo eyebolts must only be used for axial loading. When using
eyebolts with multi-leg slings use eyebolts with links or collar
eyebolts taking care to de-rate them correctly for angular loading
Where a single eyebolt is used, use a swivel or swivel hook to
prevent the eyebolt unscrewing.
Maintenance requirements are
minimal. Keep eyebolts clean, protect from corrosion and protect
threads from damage. Do not attempt to straighten bent eyebolts or
Regularly inspect eyebolts and, in the event of the following
defects, refer the eyebolt to a Competent Person for thorough
examination: illegible markings; distortion; worn, or bent shanks
and threads; incomplete or incorrectly formed threads; damaged eyes;
nicks, gouges, cracks, corrosion or other defects
Eye Blot, DIN 582 Eye Nut, BS Collared Eye Bolt
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