Why Choose Shoulder Pattern Eye Bolts?
Shoulder pattern eye bolts are useful when an application needs a forged eye bolt that can handle straight-line pulls and certain properly rated angular pulls. The shoulder under the eye helps support side loading better than a plain pattern eye bolt when the eye bolt is seated correctly and the load angle stays within the manufacturer’s rating.
This category includes Ken Forging shoulder pattern eye bolts in 8620 steel, carbon steel metric sizes, zinc plated steel, hot dipped galvanized steel, and 304 stainless steel options. These eye bolts are commonly selected for lifting, rigging, tie-down, positioning, and secure attachment applications where the correct working load limit, installation method, and load direction are confirmed before use.
Common Uses for Shoulder Pattern Eye Bolts
Shoulder pattern eye bolts are commonly used for lifting points, rigging attachment points, equipment hardware, fixtures, tie-downs, shop applications, industrial hardware, maintenance work, and general secure attachment applications where an eye bolt with a shoulder is required.
They should be selected carefully based on the load, thread size, shank length, material, finish, installation depth, base material, and pull direction. Shoulder pattern eye bolts may be used for certain angular pulls only when the eye bolt is properly seated and the reduced working load limit for that angle is followed.
How Shoulder Pattern Eye Bolts Work
Shoulder pattern eye bolts use a threaded shank that installs into a compatible tapped hole, nut, or threaded mounting point. The eye creates an attachment point for compatible lifting, rigging, securing, or fastening hardware.
The shoulder should seat firmly against the mounting surface so the eye bolt can support the intended load direction correctly. Proper installation matters because thread engagement, shoulder seating, load angle, working load limit, and inspection all affect safe use.
Shoulder Pattern Eye Bolts for Straight and Angled Pulls
Shoulder pattern eye bolts can be used for straight-line pulls and certain angular pulls when the product is rated for the application. As the load angle moves away from a straight in-line pull, the working load limit is reduced.
Always confirm the manufacturer’s rating for the exact eye bolt size, material, installation, and load angle before use. If the load rotates, changes direction, or is not controlled, compare swivel hoist rings or other lifting hardware designed for those conditions.
Shoulder Pattern Eye Bolts vs Plain Pattern Eye Bolts
Shoulder pattern eye bolts include a shoulder under the eye. That shoulder provides support for certain angled loading applications when properly installed and rated for the load angle.
Plain pattern eye bolts do not have a shoulder and are intended for straight, in-line pulls only. Choose shoulder pattern eye bolts when the application requires a properly rated eye bolt for limited angular loading. Choose plain pattern eye bolts only when the load pulls straight in line with the shank.
Shoulder Pattern Eye Bolts vs Shoulder Pattern Eye Bolts with Nut
Shoulder pattern eye bolts are threaded eye bolts that may be used with compatible tapped holes or separate matching hardware depending on the installation. Shoulder pattern eye bolts with nut include a matching nut for through-hole fastening applications.
Choose the version based on the installation method. If the eye bolt threads into a tapped hole, confirm the thread engagement and base material. If the eye bolt passes through a hole, use the correct nut and washer arrangement required for the application.
Steel, Zinc Plated and Hot Dipped Galvanized Shoulder Pattern Eye Bolts
Steel shoulder pattern eye bolts are commonly selected for lifting and attachment applications where the material and rated capacity match the job. Zinc plated steel provides a clean plated finish for dry indoor or less corrosive environments.
Hot dipped galvanized shoulder pattern eye bolts provide a heavier zinc coating than standard zinc plating for better corrosion resistance in many outdoor or exposed applications. Choose the finish based on the environment, mating hardware, and project requirements.
304 Stainless Steel Shoulder Pattern Eye Bolts
304 stainless steel shoulder pattern eye bolts are commonly selected when stainless material and corrosion resistance are useful for the application. They are practical for many indoor, outdoor, damp, and general stainless hardware applications.
For marine, coastal, chemical, salt-exposed, or more corrosive environments, compare the project requirements with available 316 stainless steel or other corrosion-resistant lifting hardware options when needed.
Metric Shoulder Pattern Eye Bolts
Metric shoulder pattern eye bolts are available for compatible metric-threaded applications. This category includes metric carbon steel shoulder pattern eye bolt options in sizes such as M6, M14, M16, M30, and M64.
Choose metric shoulder pattern eye bolts when the mounting hole, equipment, or assembly uses metric threads. Do not mix metric and inch thread systems without confirming thread compatibility, load requirements, and product specifications.
Thread Sizes and Diameters for Shoulder Pattern Eye Bolts
Shoulder pattern eye bolts are available in multiple inch and metric thread sizes, including options such as 1/4"-20, 3/8"-16, 1/2"-13, 5/8"-11, 3/4"-10, 7/8"-9, 1"-8, 1-1/8"-7, 2"-4.5, 2-1/2"-4, M6, M14, M16, M30, and M64 depending on the material and product.
Choose the eye bolt size based on the required working load limit, thread size, shank length, installation method, base material, load angle, and compatible rigging hardware. Always confirm the exact product dimensions and rated capacity before installation.
Important Safety Considerations for Shoulder Pattern Eye Bolts
Shoulder pattern eye bolts must be fully seated with the shoulder bearing against the mounting surface before loading. If the shoulder is not seated properly, the eye bolt may not perform as intended.
Before use, inspect the eye bolt for bent shanks, stretched eyes, cracked material, damaged threads, corrosion, wear, deformation, or missing markings. Do not use damaged or questionable lifting hardware. Always follow the manufacturer’s rated capacity, installation instructions, load-angle reductions, and applicable safety requirements.
How to Choose the Right Shoulder Pattern Eye Bolt
Choose the shoulder pattern eye bolt based on the load direction, working load limit, load angle, thread size, shank length, material, finish, corrosion requirements, installation method, base material, and compatible lifting or securing hardware.
If the load is straight or a properly rated controlled angled pull, choose the shoulder pattern eye bolt that matches the required capacity and environment. If the load rotates, changes direction, or may be side loaded unpredictably, compare swivel hoist rings or other lifting hardware designed for those conditions.
Related Lifting Hardware Categories
Browse related lifting hardware categories to compare shoulder pattern eye bolts, shoulder pattern eye bolts with nut, plain pattern eye bolts, plain pattern eye bolts with nut, eye nuts, pad eyes, D-rings, clips, clamps, and other lifting hardware.
- Lifting Hardware
- Eye Bolts
- Shoulder Pattern Eye Bolts
- Shoulder Pattern Eye Bolts with Nut
- Plain Pattern Eye Bolts
- Plain Pattern Eye Bolts with Nut
- Eye Nuts
- Pad Eyes
- D-Rings & Clips
- Clamps
Shoulder Pattern Eye Bolt FAQs
What are shoulder pattern eye bolts?
Shoulder pattern eye bolts are forged eye bolts with a looped eye, threaded shank, and shoulder under the eye for lifting, rigging, securing, and attachment applications.
When should I use shoulder pattern eye bolts?
Use shoulder pattern eye bolts when the application needs a forged eye bolt for straight-line loading or properly rated limited angular loading, and the eye bolt size, material, installation method, and working load limit match the job.
Can shoulder pattern eye bolts be used for angular lifts?
Shoulder pattern eye bolts may be used for certain angular lifts only when properly installed and used within the manufacturer’s rated load reduction for that angle. Always confirm the rating before use.
What is the difference between shoulder pattern and plain pattern eye bolts?
Shoulder pattern eye bolts include a shoulder under the eye and may be used for certain properly rated angular pulls. Plain pattern eye bolts do not have a shoulder and are intended for straight in-line pulls only.
What materials are available for shoulder pattern eye bolts?
Shoulder pattern eye bolt options may include 8620 steel, carbon steel, zinc plated steel, hot dipped galvanized steel, and 304 stainless steel depending on the size and product.
Are shoulder pattern eye bolts available in metric sizes?
Yes. Metric shoulder pattern eye bolt options on this page include sizes such as M6, M14, M16, M30, and M64.
How should shoulder pattern eye bolts be installed?
Shoulder pattern eye bolts should be installed so the shoulder seats firmly against the mounting surface, with proper thread engagement and the load direction matched to the rated use.
How do I choose the right shoulder pattern eye bolt?
Choose the eye bolt based on the load direction, working load limit, load angle, thread size, shank length, material, finish, corrosion requirements, installation method, base material, and compatible lifting or securing hardware.