What's the Mounting Hardware for Demco Straight Tongue Trailer Coupler 17427-95?

Updated 04/23/2026 | Published 04/19/2026

Products Featured in This Question

Demco Straight Tongue Trailer Coupler - eZ-Latch - Silver - 2" Ball - Bolt On - 10,000 lbs

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$74.41

Question:

Im looking for the bolts for this: Demco Straight Tongue Trailer Coupler - eZ-Latch - Silver - 2 Ball - Bolt On - 10,000 lbs DM15000-52

asked by: karl B

Expert Reply:

Happy to Help Karl, thanks for reaching out!

Since the correct mounting hardware depends on the specific application, we don't carry the hardware kits. To bolt on Demco Straight Tongue Trailer Coupler # DM15000-52 you’ll want to use four grade 5 or grade 8, 1/2" diameter bolts, along with washers and lock nuts.

The exact bolt length just depends on how thick your trailer tongue is, but most setups fall in the 1-1/2" to 2-1/2" range.

If it’s a standard channel tongue like 3", the thickness is usually around 3/16" to 1/4" per side. You don’t need it exact down to the millimeter, just close enough to choose the right bolt length so you have full thread engagement without too much extra sticking out.

What do you tow most—boat, work gear, or a trailer?

expert reply by: James D