Eye bolt

01

Decide whether the eye bolt is lifting-rated

ASTM A489 covers weldless forged, quenched and tempered carbon steel threaded lifting eyes (formerly called eyebolts) for overhead lifting, with chemical, mechanical, grain-size and dimensional requirements. It sets proof load, breaking strength, tensile strength, bend, impact, yield point, elongation and reduction-of-area requirements. [1]

A489 warns that lifting eyes made to it from carbon steel, even when liquid quenched and tempered, could have a fracture-appearance transition temperature (50% shear) above the operating temperature; to minimise brittle cleavage failure they should never be loaded above the proof load and should not be used when surface discontinuities exist. [1]

ASTM F541 covers forged, quenched and tempered alloy steel threaded eyebolts with improved toughness, chemically and metallurgically constituted for a low transition temperature to minimise brittle failure, intended primarily for low-temperature service, with thread sizes up to 2.500 in (63.5 mm), in two types. [2]

Editorial note: for overhead lifting, order to a lifting specification such as A489 or F541 and require the rated load and markings on each bolt; a hardware eye bolt without a lifting rating should not be used to lift. [1] [2]

Give the supplier the use (overhead lifting, rigging, anchoring, hanging), specification and type, thread size and pitch, shank length and pattern, eye inside diameter, rated working load and loading angle, steel and heat treatment, low-temperature requirement, finish (plain, zinc, hot-dip galvanized, stainless), markings, certificates and proof-test records, and quantity.

02

Set shank pattern, steel and finish

A489 includes two shank patterns — Type 1 plain (straight shank) and Type 2 shoulder pattern — and a Style B short length, all as defined in ASME B18.15. [1]

Linked suppliers list carbon and stainless steel eye bolts in plain and shoulder patterns with zinc plating [3], forged eye bolts in galvanized and 316 stainless steel including long eye bolts for formwork and precast anchoring [4], and forged eye bolts for pole-line hardware with hot-dip galvanizing tested to ASTM A123 or ISO 1461 by market. [5]

Editorial note: state the pattern (plain or shoulder) on the order and ask the supplier for the permitted loading angles and any reduction in rated load at each angle. [1]

03

Compare what suppliers offer

Suppliers linked to this page list eye bolts; each card links to the page reviewed.

The listings reviewed range from general-purpose zinc-plated and stainless eye bolts to forged galvanized and pole-line eye bolts. Ask each whether the product is lifting-rated, to which specification, and for proof-test certificates. [3] [4] [5]

04

Trace what each feature controls

This is a functional reference built from the sources cited; it is not one maker's specification.

05

Fill the specification fields with values for your use

An eye bolt quotation needs values for your use. The table explains each field, gives published values where a reviewed source states them, and says what to obtain from the supplier.

06

Send the use, specification and load data together

Paste it into your enquiry below or into an email to a maker, then replace every bracket.

Use: [overhead lifting; rigging; anchoring]
Spec/type: [A489 Type 1/2; F541; other]
Thread: [size; pitch; length]
Load: [rated load; angle]
Steel: [carbon; alloy; stainless]
Finish: [zinc; HDG]
Certificates: [proof test; material]
Quantity: [pieces]

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