What is the diameter of the hole I need to drill in the door to mount this?

the instructions indicate that you are to drill an inch and one quarter hole in the door.

Does one need to install the outside key entry component, or can it be used as an inside only night latch?

Yes, instructions are provided for both configurations, inside security latch, or deadbolt style operation. I used both configurations. Deadbolt for front door, and security latch for inside door to garage. If using as high security use be sure to use long screws, ones included not long enough to reach internal wall studs for added strength. Door frame itself not strong enough for high security.

Can this lock be used on either a left or a right hinged door?

Yes. I've mounted it both ways.

What the is minimum thickness of door this lock will work for?

The door thickness required is 1-3/8" to 1-3/4". So the minimum is 1-3/8".Thank you for your interest in our product.A. JonesTime Warp Toys and More

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Prime-Line U 9970 Deadlock – Jimmy-Resistant Design Prohibits Forced Entry By Spreading Of Door Frames Single Cylinder Diecast Metal Lock With A Brass Finish And Angle Strike

Product ID: 262251944

Details

Brand
PRIME-LINE
Item dimensions L x W x H
25 x 109 x 73
Lock type
Deadbolt
Material
Diecast
Special features
Resistant to

🔐Jimmy-resistant design

🛠️Easy surface-mount installation

🛡️Durable diecast metal with brass finish

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1829030₫

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Description

🔒 Lock in peace of mind with style and strength!

DIY FRIENDLY SETUP - Includes clear instructions and template for quick installation on wood or metal doors 1-3/8” to 2-3/8” thick.
UNYIELDING SECURITY - Prohibits forced entry by spreading door frames with a jimmy-resistant cross-bolt lock.
COMPLETE LOCKING KIT - Comes with angled strike, rim cylinder, two unique keys, tamper-resistant shutter guard, and all mounting hardware.
PREMIUM BUILD QUALITY - Constructed from diecast metal with a sleek brass finish for long-lasting durability and style.
VERSATILE FIT FUNCTION - Surface-mounted design fits left or right hinged doors, inside or outside, with adjustable tailpiece for perfect performance.

The Prime-Line U 9970 Deadlock is a robust, jimmy-resistant single cylinder deadbolt designed to prevent forced entry by securing doors firmly to their jambs. Crafted from durable diecast metal with a brass finish, it fits wood or metal doors 1-3/8” to 2-3/8” thick and includes a tamper-resistant shutter guard, angled strike, two unique keys, and all necessary hardware for easy surface-mounted installation. Ideal for professionals seeking reliable, stylish home security with straightforward DIY setup.

Specifications

ASIN	B000BDB4Q0
ASIN	B000BDB4Q0
Additional Features	Resistant to forced entry and tampering protection
Best Sellers Rank	#79,478 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #159 in Deadbolts
Brand Name	PRIME-LINE
Color	Brass
Control Method	Touch
Controller Type	Ring
Customer Reviews	4.4 4.4 out of 5 stars (1,049)
Customer reviews	4.4 4.4 out of 5 stars (1,049)
Date First Available	3 October 2012
Department	Unisex Adult
Finish Types	Brass
Global Trade Identification Number	00049793099709
Included Components	Deadlock and fasteners
Is Discontinued By Manufacturer	No
Item Dimensions	25 x 109 x 73 millimeters
Item Type Name	Door Lock
Item Weight	454 g
Item model number	U 9970
Lock Type	Deadbolt
Manufacturer	Prime-Line Products (Home Improvement)
Manufacturer	Prime-Line Products (Home Improvement)
Material Type	Diecast
Model Number	U 9970
Product Dimensions	2.54 x 10.95 x 7.29 cm; 453.59 g
Recommended Uses For Product	Security
Shape	Round
Style Name	Single Cylinder
UPC	049793099709
Unit Count	1 Count

Reviews

M**R

extra lock for back door, easy to fit for a person who has basic diy skills

24.10.2017

B**S

Use it for sliding doors and works well. The white color is actually super-white and not a darker shade as seen on the website.

29.03.2014

J**D

Easy install and a unique look

24.07.2025

F**A

Adquirido há quase um ano, instalado exposto ao tempo, se mostra resistente às intempéries. Recomendo o produto

27.04.2025

G**N

produto chegou conforme solicitado

13.02.2026

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1829030₫

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In stock

Sold byAmazon VietnamDelivered 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 Vietnam.

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TrustScore 4.5 | 7,300+ reviews

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