What is the diameter of the hole for the lock shackle?

The hole is 7/16" (not 1/2" like the other answer says). Would have been nice if the manufacturer had listed this in the description.

Is the body aluminum? How secure can that be?

Blaylock Trailer (TL-33) Lock. The EZ Lock Model TL-33 Universal Coupler Lock is precision made of heavy grade aircraft aluminum and will not rust. It features a solid hardened 3/4" steel locking rod, for use with large heavy duty padlock (padlock not included). Fits all trigger style: Fulton, Shelby, Dutton-Lainson, Atwood, and similar. Fits latch style: Atwood, Fulton cast couplers and similar. Does not fit Hammeblow (Bulldog) couplers. Inside dimension of the channel is 4-3/4 inches with overall dimensions of 4-1/2" depth x 6-1/8" wide x 5-1/2" tall. A patented design ensures the most secure way to leave an unattended trailer.

What if I only need a pin

Make one out of a grade 8 bolt the length you need to be able install a lock. Have a hole drilled in the end of the bolt slightly larger than the lock used

Would a 5/8" locking hitch pin work with this security device?

Not sure why anyone would want to attempt that. I would suggest ordering it - then take the rod from it to a locksmith you trust and get a good padlock for it. If you want things Keyes the same so you don’t look like a high-school janitor - locksmiths can customize locks and match key gateway systems. If you get a cheap lock from a big box store - think through the “weakest link” theory and scrap the idea of buying this item.

Blaylock American Metal Tl 33 Coupler Lock

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90821CFA

Duties & taxes included

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Sold byAmazon Cote D' IvoireDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔐 Lock It Down, Drive It Proud!

🌟 TRUSTED BRAND - Manufactured by Blaylock American Metal, a name synonymous with reliability and quality.
📏 ADJUSTABLE FIT - Accommodates couplers from 2" to 2-5/16", providing a snug and secure fit every time.
🔑 SECURE YOUR TRAILER - Designed for both commercial and recreational use, ensuring peace of mind wherever you go.
💪 DURABLE CONSTRUCTION - Crafted from high-quality aluminum and alloy steel with a powder-coated finish for long-lasting performance.
🔄 VERSATILE COMPATIBILITY - Fits over 30 different coupler styles and brands, making it the ultimate choice for diverse needs.

The Blaylock TL-33 Universal Coupler Receiver Lock is a robust and versatile locking solution designed for both commercial and recreational trailers. Weighing just 3 pounds, this lock fits over 30 different coupler styles and accommodates couplers ranging from 2" to 2-5/16". Made from durable aluminum and alloy steel with a powder-coated finish, it ensures long-lasting protection for your trailer. Proudly made in the USA, the TL-33 is the go-to choice for secure and reliable trailer locking.

Specifications

ASIN	B000R6T8NW
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#110,529 in Automotive ( See Top 100 in Automotive ) #179 in Towing Hitch Locks
Brand	Blaylock American Metal
Brand Name	Blaylock American Metal
Compatible with Vehicle Type	Trailer
Customer Reviews	4.6 out of 5 stars 1,017 Reviews
Finish Type	Powder Coated
Global Trade Identification Number	00749560112333
Included Components	Main component only
Item Weight	3 Pounds
Manufacturer	Blaylock American Metal
Manufacturer Part Number	TL-33
Manufacturer Warranty Description	Please contact us if you experience any issues within 30 days of receipt.
Material	Alloy Steel , Aluminum , Metal
Material Type	Alloy Steel, Aluminum, Metal
UPC	749560112333
Unit Count	1.0 Count
Vehicle Service Type	Trailer

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90821CFA

Duties & taxes included

In stock

Sold byAmazon Cote D' IvoireDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Cote D' Ivoire.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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