---
product_id: 7636453
title: "Prime-Line Single Cylinder Jimmy-Proof Deadlock, Brass, 1-3/8 to 2-3/8 in."
brand: "prime-line"
price: "€ 74.25"
currency: EUR
in_stock: true
category: "Prime Line"
url: https://www.desertcart.gr/products/7636453-prime-line-single-cylinder-jimmy-proof-deadlock-brass-1-3
store_origin: GR
region: Greece
---

# Jimmy-proof cross bolt lock Fits 1-3/8 to 2-3/8 in. doors Surface-mounted, no mortising Prime-Line Single Cylinder Jimmy-Proof Deadlock, Brass, 1-3/8 to 2-3/8 in.

**Brand:** prime-line
**Price:** € 74.25
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in peace of mind with style and strength!

## Quick Answers

- **What is this?** Prime-Line Single Cylinder Jimmy-Proof Deadlock, Brass, 1-3/8 to 2-3/8 in. by prime-line
- **How much does it cost?** € 74.25 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/7636453-prime-line-single-cylinder-jimmy-proof-deadlock-brass-1-3)

## Best For

- prime-line enthusiasts

## Why This Product

- Trusted prime-line brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Installation:** Surface-mounted design means no door edge mortising—install with common household tools in minutes.
- • **Durable & Stylish Finish:** Diecast metal with corrosion-resistant brass finish adds long-lasting protection and a premium look.
- • **Tamper-Resistant Protection:** Includes shutter guard and two keys to deter lock picking and unauthorized access.
- • **Unbreakable Security Upgrade:** Jimmy-resistant cross bolt locks your door tight against forced entry and prying attempts.
- • **Versatile Door Compatibility:** Perfectly fits wood, metal, and resin doors from 1-3/8 to 2-3/8 inches thick for seamless integration.

## Overview

The Prime-Line Single Cylinder Jimmy-Proof Deadlock is a surface-mounted, jimmy-resistant security solution designed for entry doors 1-3/8 to 2-3/8 inches thick. Crafted from durable diecast metal with a brass finish, it features a cross bolt locking mechanism and tamper-resistant shutter guard to prevent forced entry and lock tampering. Easy to install without door mortising, it includes all necessary hardware and two keys, making it an ideal upgrade for enhanced home security.

## Description

Product Description Add dependable supplemental security to entry doors with the Prime-Line U 9970 Single Cylinder Deadlock. Designed for surface-mounted installation, this jimmy-resistant deadlock helps protect against forced entry by securing the door to the jamb and helping resist door frame spreading and prying. It is an effective security upgrade for homeowners seeking additional protection beyond standard locksets. Constructed from durable diecast metal with a corrosion-resistant brass-colored finish, this deadlock is built for long-lasting performance and an attractive appearance. The surface-mounted cross bolt locking mechanism provides enhanced door security, while the keyed single-cylinder design features a tamper-resistant shutter guard to help deter lock tampering and picking attempts. Compatible with wood, metal, and resin doors measuring 1-3/8 in. to 2-3/8 in. thick, this lock installs easily using common household tools and the included mounting hardware. Each package includes the deadlock, flat keeper, two keys, and installation components for a complete security solution. Compare door dimensions and installation requirements before purchasing to ensure proper fit. From the Manufacturer This single cylinder deadlock is constructed of diecast and it comes in a brass colored finish. It features a jimmy-resistant design which prohibits forced entry when attempts are made to spread the door away from the frame. This is a surface-mounted, cross-bolt locking device which can be mounted to 1-3/8 in. to 2-3/8 in. thick, wood or metal doors. This door lock includes an angled strike, a rim cylinder, 2 keys, a cylinder trim ring, fasteners, a mounting plate, instructions and a tamper-resistant shutter guard. This lock requires a 1-1/4 in. hole and uses Segal keyway. it is keyed differently, but it is also available keyed alike via special order from manufacturer. See Prime-Line's model number U 9972 for a double cylinder deadlock, or model number U 9971 for the single cylinder deadlock in a white painted finish. Single cylinder deadlock is also available in satin nickel finish; model number U 10817.

## Features

- Ideal Use: Adds supplemental security to entry doors by helping resist forced entry, prying, and door frame spreading
- Dimensions & Compatibility: Fits wood, metal, and resin doors from 1-3/8 in. to 2-3/8 in. thick.
- Materials & Components: Durable diecast metal construction with brass-colored finish; includes deadlock, flat keeper, mounting hardware, and 2 keys
- Key Features: Jimmy-resistant cross bolt design secures the door to the jamb and includes a tamper-resistant shutter guard for added protection
- Fit Guidance: Surface-mounted installation requires no door edge mortising; verify door thickness and mounting location before ordering

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BDB4Q0 |
| Additional Features | Weather Resistant |
| Best Sellers Rank | #33,844 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #155 in Deadbolts |
| Brand | PRIME-LINE |
| Brand Name | PRIME-LINE |
| Color | Brass |
| Control Method | Touch |
| Controller Type | Ring |
| Customer Reviews | 4.4 out of 5 stars 1,169 Reviews |
| Finish Types | Brass |
| Global Trade Identification Number | 00049793099709 |
| Included Components | Deadlock and fasteners |
| Item Dimensions | 1 x 4.31 x 2.87 inches |
| Item Type Name | Door Lock |
| Item Weight | 16 ounces |
| Item dimensions L x W x H | 1 x 4.31 x 2.87 inches |
| Lock Type | Deadbolt |
| Manufacturer | Prime-Line Products (Home Improvement) |
| Manufacturer Part Number | U 9970 |
| Manufacturer Warranty Description | Goods are warranted against manufacturing defects for 1 year. |
| Material | Diecast metal |
| Material Type | Diecast metal |
| Model Name | Deadlock |
| Model Number | U 9970 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Recommended Uses For Product | Security |
| Shape | Round |
| Special Feature | Weather Resistant |
| Style Name | Single Cylinder |
| UPC | 049793099709 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** PRIME-LINE
- **Item dimensions L x W x H:** 1 x 4.31 x 2.87 inches
- **Lock Type:** Deadbolt
- **Material:** Diecast metal
- **Special Feature:** Weather Resistant

## Images

![Prime-Line Single Cylinder Jimmy-Proof Deadlock, Brass, 1-3/8 to 2-3/8 in. - Image 1](https://m.media-amazon.com/images/I/71BwAUjfjrL.jpg)
![Prime-Line Single Cylinder Jimmy-Proof Deadlock, Brass, 1-3/8 to 2-3/8 in. - Image 2](https://m.media-amazon.com/images/I/71uqBNjsOYL.jpg)
![Prime-Line Single Cylinder Jimmy-Proof Deadlock, Brass, 1-3/8 to 2-3/8 in. - Image 3](https://m.media-amazon.com/images/I/51XDUmZ-jgL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: What is the diameter of the hole I need to drill in the door to mount this?**
A: the instructions indicate that you are to drill an inch and one quarter hole in the door.

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

**Q: Can this lock be used on either a left or a right hinged door?**
A: Yes.  I've mounted it both ways.

**Q: What the is minimum thickness of door this lock will work for?**
A: 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

## Frequently Bought Together

- 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 (Single Pack)
- National Hardware N183-590 V807 Door Chain in Brass,1/2" x 6"
- Prime-Line U 10378 Bright Brass, Steel Cylinder Guide (Single Pack)

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**Shop now:** [https://www.desertcart.gr/products/7636453-prime-line-single-cylinder-jimmy-proof-deadlock-brass-1-3](https://www.desertcart.gr/products/7636453-prime-line-single-cylinder-jimmy-proof-deadlock-brass-1-3)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-09-23*