What size and length screws need to be used to install to the transom?

If your transom is 2 inches thick, you need the next size smaller than 2 inches. If your transom is only an inch thick, don't install it at all, because your boat will sink. Cheers!

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T-H Marine Drain Plug - Self-Retaining Screw-Type Boat Drain Plug - Fits 1 in Hole - Polypropylene with O-Ring Seal - Vibration Resistant - Ideal for Transoms, Wells, Coolers, and Tanks

Product ID: 1708003

Details

Brand
T-H Marine
Color
Black
Item Weight
18.14 g
Material
Polypropylene
UPC
733572018400

⚓Marine-grade polypropylene durability

🔩Self-retaining screw-type design

🛡️O-ring seal for leak-proof security

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Description

⚓ Secure your boat’s flow with leak-proof confidence!

FITS LIKE A GLOVE - Standard 1-inch hole compatibility with easy installation using common No. 8 screws.
VERSATILITY ON DECK - Perfect for transoms, livewells, bait tanks, coolers, and more—one plug to rule them all.
LEAK PROOF CONFIDENCE - Threaded seal with chemically inert O-ring ensures zero leaks even under heavy vibration.
STAY ATTACHED STAY SECURE - Self-retaining design prevents accidental loss—never fish for your plug again.
BUILT TO BRAVE THE ELEMENTS - Rugged polypropylene construction resists corrosion and marine wear for long-lasting use.

The T-H Marine Drain Plug is a self-retaining, screw-type drain plug designed for 1-inch holes, featuring a chemically inert O-ring seal that guarantees leak-free performance even under vibration. Made from durable, corrosion-resistant polypropylene, it’s ideal for marine applications including transoms, livewells, bait tanks, and coolers. Easy to install and built to last, this plug prevents loss and ensures your boat’s drainage system stays secure and efficient.

Specifications

ASIN	B0000AY0BX
Best Sellers Rank	#53,308 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #138 in Boat Deck Hardware
Brand Name	T-H Marine
Color	Black
Customer Reviews	4.6 4.6 out of 5 stars (602)
Global Trade Identification Number	00733572018400
Included Components	Drain plug
Item Type Name	Drain Plug
Item Weight	18.14 g
Manufacturer	T-H Marine
Manufacturer Part Number	DP-1-DP
Manufacturer Warranty Description	Limited manufacturer.
Material Type	Polypropylene
Model Number	3001.57
Number of Items	1
Number of Packs	1
UPC	733572018400 751738988473
Unit Count	1 Count

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Esc 3688

Duties & taxes included

In stock

Sold byAmazon Cape VerdeDelivered 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 Cape Verde.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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