To fit the trailer coupling, what size bolts will I need?

i was building a trailer from scratch so i used 15mm stainless steel bolts

Will this fit Indespension M5 version A?

I have no idea what 'Indespension M5 version Aa' is . The 50mm socket is a universal 50mm ball socket which will fit all 50mm towball hitches. As far as mounting on the trailer pull bar, which I assume you are referring to, I don't know.

What should have been the contents of the box? My packaging was damaged upon arrival so all I received was the hitch. No key or info etc...

on my hitch that is all you get there is no lock by key on it there is a key hole but all I did after fitting the hitch was press the the button and lift the lever and pop it on the ball.

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Maypole 50mm Pressed Steel Coupling Suitable Replacement for Knott KQ7K, AL-KO AK7D, Ifor Williams PO0355 and Unbraked Trailers

Maypole 50mm Pressed Steel Coupling Suitable Replacement for Knott KQ7K, AL-KO AK7D, Ifor Williams PO0355 and Unbraked Trailers

Product ID: 49635729

🔩50mm drawbar compatibility

⚖️750kg towing capacity

🛡️EU R55 safety approved

€ 45.93

Duties & taxes included

In stock

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Description

🔗 Lock in reliability, tow with confidence!

SECURITY LOCK READY - Optional lock upgrade for enhanced trailer protection
ROBUST 750 KG TOWING POWER - Engineered for reliable unbraked trailer towing
CERTIFIED SAFETY ASSURANCE - R55 EU approval guarantees peace of mind on every journey
DURABLE PRESSED STEEL BUILD - Zinc-plated finish resists corrosion and wear
PRECISION FIT FOR 50 MM DRAWBARS - Seamlessly replaces Knott, AL-KO & Ifor Williams models

The Maypole MP80 is a pressed steel 50mm trailer coupling designed for unbraked trailers up to 750kg. Compatible with popular drawbars like Knott KQ7K, AL-KO AK7D, and Ifor Williams PO0355, it features a zinc-plated finish, EU R55 safety approval, and an optional security lock for added protection. Lightweight yet durable, it’s the go-to choice for professional-grade towing reliability.

Specifications

ASIN	B004NCEVJ2
Best Sellers Rank	28,511 in Automotive ( See Top 100 in Automotive ) 26 in Trailer Couplings
Brand	Maypole
Customer Reviews	4.4 4.4 out of 5 stars (510)
Date First Available	21 Dec. 2010
Item Weight	998 g
Item model number	MP80
Manufacturer	Maypole
Manufacturer part number	080
Model	MP80
OEM Part Number	080
Product Dimensions	96.9 x 50.4 x 19.7 cm; 997.9 g

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