Polar Focus 1/4″ Forged Shoulder Eyebolt for loudspeaker rigging. 1/4″ 20 tpi threads, 1″ long shank. WLL is 500 lbs for straight pull. Chicago brand.
Eyebolts are carbon steel forged shoulder type. Eyebolts must always be turned so that the load is being applied within the plane of the eyebolt. You must derate the Working Load Limit (WLL) with the angle at which the load is applied.
Derate the WLL by 75% at 45 degrees, and by 90% at 90 degrees. WLL are from eyebolt manufacturer. Forged shoulder eyebolts with other shank lengths are available upon request.
Pro audio rigging design, roof attachment, supplemental structure, sales, support and PE stamped drawings in any US State and Canada provided by Polar Focus. Call us at (413) 586-4444.