Tie Down Engineering Cap Nuts, 5/8 Inch, Zinc-Plated Steel, 4-Pack (86310)

These Tie Down Engineering cap nuts are replacement hardware for trailer roller shafts, sold as a 4-pack in the 5/8 inch size. Each nut is machined from solid steel and zinc-plated for rust protection, making them suited to the wet, corrosive conditions boat trailers see on a regular basis. They are designed to thread onto roller shaft ends, retaining the roller in place on the bracket while resisting the elements that cause bare steel hardware to corrode and seize over time.

This is a straightforward hardware replacement item: if the cap nuts on a trailer roller assembly have rusted, rounded off, or gone missing, this 4-pack provides a direct, ready-to-install fix without needing to replace the entire roller bracket. The zinc plating gives the nuts a silver finish and adds a layer of protection against saltwater and freshwater exposure alike. Each pack contains 4 individual cap nuts, sized for 5/8 inch shafts, so buyers should confirm their roller shaft diameter before ordering.

Specifications

• Brand: Tie Down Engineering
• Manufacturer Part Number: 86310
• Product Type: Cap Nut
• Size: 5/8 inch
• Pack Quantity: 4
• Material: Alloy Steel, Zinc
• Finish: Zinc-Plated
• Color: Silver
• Weight: 0.11 pounds
• UPC: 081628863109
• Included Components: Trailer Rollers / Shafts hardware

Fitment

Fits 5/8 inch trailer roller shafts. No specific make, model, or year fitment is listed for this hardware item.

Frequently Asked Questions

What size trailer roller shaft do these cap nuts fit? The Tie Down Engineering 86310 cap nuts are sized for 5/8 inch roller shafts.

How many cap nuts come in part number 86310? Part number 86310 is sold as a 4-pack, giving four individual cap nuts per order.

What material are the 86310 cap nuts made from? They are made from alloy steel with a zinc finish, giving them the silver appearance and rust resistance needed for trailer hardware.

Are these cap nuts rust resistant? Yes, the 86310 cap nuts are zinc-plated specifically for rust protection, which suits them to wet trailering conditions.

How much does the 86310 4-pack weigh? The Tie Down Engineering 86310 cap nut 4-pack weighs 0.11 pounds.

What is the UPC for Tie Down Engineering part 86310? The UPC for the 86310 cap nut 4-pack is 081628863109.

What are these cap nuts used for? They are used as replacement hardware to retain trailer rollers on their shafts, part of the roller bracket assembly on a boat trailer.

Is this a solid steel construction? Yes, the 86310 cap nut has a solid steel shaft construction with zinc plating over it.

Do the 86310 cap nuts include a warranty? The Tie Down 86310 cap nuts carry a 1 year limited warranty.

What color are the 86310 cap nuts? They have a silver finish, the result of the zinc plating over the steel.

Does part number 86310 fit a specific trailer brand or model? No specific trailer make, model, or year is listed for the 86310 cap nuts; they are generic hardware sized to fit 5/8 inch roller shafts.