At a Glance
- SKU: 9163B-KITX4

Four-piece trailer suspension hardware kit with 9/16" shackle bolts and matching lock nuts for common leaf spring hanger and equalizer service work.
This R&P Carriages trailer shackle bolt and lock nut kit includes four 9/16" shackle bolts with matching lock nuts for common trailer leaf spring suspension service. These components are typically used in spring hanger, shackle, and equalizer assemblies where the original hardware is worn, missing, or being replaced during suspension repair.
Suspension bolts and lock nuts are small parts, but they carry real load through the spring and equalizer system. Replacing worn hardware during spring or equalizer service helps restore a tighter, more secure suspension connection.
Compatibility: Designed for trailer suspension applications that use 9/16" shackle bolts.
Vehicle / System Fit: Commonly used with double-eye leaf spring hanger, shackle, and equalizer assemblies.
Installation Notes: Verify bolt diameter, bolt length, hanger style, equalizer configuration, and bushing size before ordering or installing.
Performance Insight: Correct suspension hardware helps maintain proper spring and equalizer movement while keeping the assembly securely fastened.
Selling Brand: R&P Carriages
Application Reference: This listing is for trailer suspension hardware commonly used in compatible leaf spring hanger and equalizer assemblies where the measurements match.
What This Means: This is a curated R&P Carriages hardware kit, not a guaranteed OEM-branded item unless specifically stated and verified.
Before Ordering: Confirm the bolt diameter, length, thread style, suspension position, and included components against your existing trailer hardware.
When trailer suspension hardware is loose, worn, or seized, it can make spring and equalizer service harder than it needs to be. Replacing bolts and lock nuts during repair is often cleaner than trying to reuse hardware that has already been under load.
Includes four shackle bolts and four matching lock nuts for trailer suspension service.
Built for applications requiring 9/16" trailer shackle bolts.
Commonly used in front and rear spring hanger locations, shackles, and equalizer assemblies.
A practical replacement kit for utility, cargo, equipment, and enclosed trailer suspension repairs.
| Specification | Detail |
|---|---|
| Part Number | 9163B-KITX4 |
| Brand | R&P Carriages |
| Product Type | Trailer shackle bolt and lock nut kit |
| Application | Trailer leaf spring suspension hardware |
| Bolt Diameter | 9/16" |
| Included Hardware | 4 shackle bolts and 4 lock nuts |
| Material / Finish | Alloy steel, Black corrosion - resistant paint |
| Fitment | Compatible with trailer suspension setups requiring matching 9/16" shackle bolts |
| Category | Details |
|---|---|
| Vehicle / System | Trailer leaf spring suspension systems |
| Primary Fit | Spring hanger, shackle, and equalizer assemblies using 9/16" bolts |
| Trailer Types | Utility, cargo, equipment, and enclosed trailers where dimensions match |
| Notes | Verify bolt diameter, bolt length, bushing size, hanger style, and suspension configuration before ordering. |
| Quantity | Item |
|---|---|
| 4 | 9/16" trailer shackle bolts |
| 4 | Matching lock nuts |
| 1 | Complete 4-bolt suspension hardware kit |
Selected products are added together. Review the cart and verify kit contents to prevent duplicates. Prices and discounts are determined at checkout.
Have your SKU or manufacturer part number, photos of the original part and mounting, and any critical measurements ready. Capacity, voltage, or bolt pattern can help too.
815-357-3292 · 270 E Jackson St · Seneca, IL 61360
Customer feedback summarized from Google and Yellow Pages. Dates are shown where available.
Ordered trailer repair parts repeatedly; praised fast service, careful packing, and accurate orders.
Found the correct RV keys at a good price with free shipping; the keys worked as expected.
Needed an unusual axle and leaf-spring size; the team listened and helped him sort out the fit.
Praised the OEM and aftermarket selection, discounts, quick shipping, and friendly parts staff.
Got the axle he needed right away, set up with a custom spring perch.
Praised the polite staff and quality welding on a project.
Replacement struts brought a long-used door back to working order.
Had a trailer built to his needs at a fair price, then found parts for two other trailers in stock.
Praised the customer service after working with R&P over several years.
Found the gas shock he wanted at a good price with shipping included.
Received swivel D-rings with backing plates and praised the price, correct order, and service.
The right parts arrived the first time, with fast delivery and helpful staff.
Said project advice and prompt shipping helped finish a trailer project.
Reported helpful service and fast shipment to Germany.
Praised a suspension kit, fair pricing, and good parts.
Was pleased with a replacement trailer cord.
Noted dependable service and products across repeat visits.
Said the axle installation fit perfectly and thanked Josh and the crew.
Praised the crew’s professionalism during a difficult hitch replacement.
Liked the product, price, communication, and shipping.
Said the product description explained what would work for the trailer.
Received the item as described with very fast shipping and plans to return.
Praised accurate description, quick shipping, and clear communication.
Was happy with the product and its price.
Called it a pleasure doing business with R&P.
Was pleased with product quality, quick delivery, and an easy installation.
Was enthusiastic about the products.
Was ready to install the product on every trailer they own.
Expected to buy again after a good experience.
Reported that the newly installed parts were working perfectly.
Said things went well, as they had on previous visits.
Praised clear communication and fair value.
Said the transaction went as expected.
Noted good value, careful packing, and fast shipping.
Found the team professional and easy to work with.
Praised fast shipping and good communication.
Shared appreciation for the owners and their company.
Reported prompt shipping and said they would buy again.
Found R&P easy to deal with.
Praised the people and the service.
Reported a good fit, fair price, accurate listing, and quick shipping.
Received the order a day early and recommended the seller.
Described a no-hassle, professional custom-trailer purchase.
Praised a new trailer, custom additions, helpful staff, and clear pricing.
Found the right hub covers quickly and got helpful maintenance advice.
Said R&P helped their company get back on the road after an axle problem.
Was happy with a dump-trailer purchase after comparing options.
Received clear help choosing brake assemblies and bearing seals, followed by fast shipping.
Found a good deal on a 16-foot dump trailer and planned to return.
Thanked the staff for their patience and recommended the shop.
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