If a door has three hinges do you need a self-closing hinge on all three or just one

Just one, if it is a normal interior door. The heavier the door, the greater the need for additional force and thus more hinges. A heavy exterior door might require two or more self-closing hinges.

Is the tension adjustable?

Yes. The coil spring inside can be adjusted with a little or a lot. Door sizes and styles can vary, the tension helps to allow for the differences.

How tight is the tension to push the door open that is slightly ajar? It is a door that the dog uses but I don’t want it clsd all the way just slightl

You can vary the amount of "spring" in the hinge. I put this hinge on our hall powder room door because my wife left it open into the hallway all the time. Our 13 lb dog is a mama's girl and always follows my wife into the powder room. When she gets bored sitting there she can easily nose her way out when the door isn't latched (the dog, that is, not my wife).

Hello, how would I be able to oil or grease this hinge if it were to start squeaking?

Use graphite powder or graphite spray, not 3in1, wd, silicone, etc. WD 40 and other all purpose Oils/lubes tend to attract dust and dirt to the hinge, creating a gummy substance over time and causing squeaks to come back and hinges to drag. Graphite can get messy but if you take your time it will perform far longer than oil or other lubes will on locks, hinges, pulleys, etc.

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Amazon Basics Self-Closing Door Hinge, 3.5 Inch x Inch, 1 Piece, Satin Nickel

Product ID: 360471866

Details

Brand
Amazon Basics
Finish type
Satin Nickel
Material
Alloy Steel
Mounting type
Door Mount
Product dimensions
8.9L x 8.9W

🔩3.5-inch precision size

🚪Smooth self-closing action

🛠️Durable alloy steel build

€ 11.47

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚪 Close the door on ordinary—upgrade to effortless style and function!

COMPACT 3 5 INCH DESIGN - Perfectly sized for seamless integration without bulk
SLEEK SATIN NICKEL FINISH - Modern elegance that complements any door style
ROBUST ALLOY STEEL CONSTRUCTION - Engineered for long-lasting strength and reliability
EFFORTLESS SELF CLOSING MECHANISM - Ensures your doors close smoothly every time, no extra push needed
COMPLETE MOUNTING HARDWARE INCLUDED - Ready to install right out of the box—no extra trips to the hardware store

The Amazon Basics Self-Closing Door Hinge is a 3.5 x 3.5 inch, satin nickel-finished hinge crafted from durable alloy steel. Featuring a built-in self-closing mechanism and including all necessary mounting hardware, it offers a sleek, reliable solution for smooth door operation and modern aesthetics.

Specifications

ASIN	B07GF54KV8
Best Sellers Rank	#8,612 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #6 in Door Hinges
Brand	Amazon Basics
Brand Name	Amazon Basics
Color	Satin Nickel
Country of Publication	China
Customer Reviews	4.6 out of 5 stars 4,422 Reviews
Finish Types	Satin Nickel
Finish type	Satin Nickel
Global Trade Identification Number	00841511122160
Hole Count	1
Hole count	1
Included Components	1 Door Hinge
Item Dimensions L x W	8.9L x 8.9W centimeters
Item Type Name	Self-Closing Door Hinge, 3.5 Inch x 3.5 Inch, 1 Piece, Satin Nickel
Item Weight	0.59 Pounds
Manufacturer	Amazon Basics
Manufacturer Part Number	AB-DH550-SN
Material	Alloy Steel
Material Type	Alloy Steel
Model Number	AB-DH550-SN
Mounting Type	Door Mount
Mounting type	Door Mount
Product dimensions	8.9L x 8.9W centimeters
UPC	841511122160
Unit Count	1.0 Count

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