Forged Shoulder Machinery Eye Bolt S-279/M-279, also known as shoulder eye bolt.
Machinery eye bolts are designed with a shoulder and rated for both in-line pulls and angular loads.
The difference between lifting eye bolts and regular and shoulder type eye bolts is that the shank and threads of the machinery eye bolt do not protrude through the base metal.
Therefore, all of the holding strength of the machinery eye bolt is on the threads.
These forged shoulder type eye bolts also meet all requirements of ASME B30.26.