---
product_id: 330774109
title: "PRIME-LINE Defender Security U 10385, Satin Nickel Door Strike, for Use with 5-1/2” and 6” Hole Spacing On Dead Latch and Deadbolt, Steel, single pack"
brand: "prime-line"
price: "R841"
currency: ZAR
in_stock: true
reviews_count: 5
category: "Prime Line"
url: https://www.desertcart.co.za/products/330774109-prime-line-defender-security-u-10385-satin-nickel-door-strike
store_origin: ZA
region: South Africa
---

# Fits 5.5” to 6” hole spacing 6 x 3-inch security screws One-piece max security combo plate PRIME-LINE Defender Security U 10385, Satin Nickel Door Strike, for Use with 5-1/2” and 6” Hole Spacing On Dead Latch and Deadbolt, Steel, single pack

**Brand:** prime-line
**Price:** R841
**Availability:** ✅ In Stock

## Summary

> 🛡️ Secure your space with style and strength — don’t let your door be the weak link!

## Quick Answers

- **What is this?** PRIME-LINE Defender Security U 10385, Satin Nickel Door Strike, for Use with 5-1/2” and 6” Hole Spacing On Dead Latch and Deadbolt, Steel, single pack by prime-line
- **How much does it cost?** R841 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/330774109-prime-line-defender-security-u-10385-satin-nickel-door-strike)

## 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

- • **Durability Meets Style:** Stamped alloy steel construction with a sleek satin nickel finish that lasts and impresses.
- • **Unmatched Kick-In Resistance:** Includes six 3-inch screws that anchor deep into the door frame for maximum hold.
- • **Tailored Fit for Modern Doors:** Taller latch and bolt openings accommodate 5.5” to 6” hole centers with ease.
- • **Quick, Professional Installation:** Designed for easy mounting with pilot holes, perfect for the savvy DIY or pro installer.
- • **Fortify Your Entry with Precision:** One-piece combo plate replaces separate latch and deadbolt strikes for seamless security.

## Overview

The PRIME-LINE Defender Security U 10385 is a robust, one-piece door strike designed for dead latch and deadbolt systems with 5.5” to 6” hole spacing. Crafted from durable stamped alloy steel with a satin nickel finish, it includes six 3-inch screws for superior kick-in resistance. This modern, anti-theft door strike offers easy installation and a tailored fit, making it the ultimate upgrade for residential door security.

## Description

Replace your standard, separate latch and deadbolt strike plates with one designed for maximum security. Our Defender Security Max Security Combo Strike is a one-piece combo plate that comes with six 3 inch long screws for maximum security. These longer screws allow for a strong hold, which helps prevent kick-ins. Made of stamped steel with a satin nickel finish, this door strike is strong and durable, sure to last the test of time. Installation is quick and easy, and the door strike fastens into jamb and door frame with screws. Some mortising and pilot hole drilling may be required for a flush install. This door strike features slightly taller latch and bolt openings to accommodate door hardware spaced from 5-1/2 in. to 6 in. hole centers. *Installation note: It is best to pilot drill a hole for the 3 inch long screws and use a hand operated screw driver to install the 3 inch long screws.

Review: Solid - Well made
Review: Solid product - Good quality thanks

## Features

- REPLACE STANDARD LATCH AND STRIKES – The Defender Security U 10385 door strike is designed to replace the standard, separate latch and deadbolt strike plates with a one-piece combo plate.
- MAXIMUM SECURITY STRIKE – This door strike provides maximum security! It comes with a one-piece combo plate plus six 3 in. long screws for maximum security. These longer screws allow for a strong hold, which helps prevent kick-ins.
- TALLER LATCH AND BOLT OPENINGS – This door strike features slightly taller latch and bolt openings to accommodate door hardware spaced from 5-1/2 in. to 6 in. hole centers.
- EASY INSTALLATION – Installation is quick and easy, and the door strike fastens into jamb and door frame with screws. Some mortising and pilot hole drilling may be required for a flush install.
- DURABLE, STRONG CONSTRUCTION – Made of stamped steel with a satin nickel finish, this door strike is durable, sure to last the test of time. Measure the center holes for your replacements. These are designed to be used for 5 ½ to 6 inches on center only.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00D2K33NG |
| Additional Features | Anti theft |
| Brand | PRIME-LINE |
| Brand Name | PRIME-LINE |
| Color | Satin Nickel |
| Customer Reviews | 4.7 out of 5 stars 3,496 Reviews |
| Finish Types | Satin Nickel |
| Global Trade Identification Number | 00049793103857 |
| Included Components | Door stroke and keepers |
| Item Dimensions | 27.9 x 4.1 x 27.9 centimeters |
| Item Type Name | Door Strike, for Use with 5-1/2” and 6” Hole Spacing On Dead Latch and Deadbolt, Steel, Satin Nickel |
| Item dimensions L x W x H | 27.9 x 4.1 x 27.9 centimeters |
| Lock Type | Deadbolt |
| Lock type | Deadbolt |
| Manufacturer | Prime-Line Products |
| Manufacturer Part Number | U 10385 |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Model Name | Door Strike |
| Model Number | U 10385 |
| Number of Pieces | 1 |
| Recommended Uses For Product | residential door security |
| Recommended uses for product | residential door security |
| Special features | Anti theft |
| Style Name | Modern |
| UPC | 049793103857 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** PRIME-LINE
- **Item dimensions L x W x H:** 27.9 x 4.1 x 27.9 centimeters
- **Lock type:** Deadbolt
- **Material:** Alloy Steel
- **Special features:** Anti theft

## Images

![PRIME-LINE Defender Security U 10385, Satin Nickel Door Strike, for Use with 5-1/2” and 6” Hole Spacing On Dead Latch and Deadbolt, Steel, single pack - Image 1](https://m.media-amazon.com/images/I/516gOAKRc1L.jpg)
![PRIME-LINE Defender Security U 10385, Satin Nickel Door Strike, for Use with 5-1/2” and 6” Hole Spacing On Dead Latch and Deadbolt, Steel, single pack - Image 2](https://m.media-amazon.com/images/I/613TXV-6k-L.jpg)
![PRIME-LINE Defender Security U 10385, Satin Nickel Door Strike, for Use with 5-1/2” and 6” Hole Spacing On Dead Latch and Deadbolt, Steel, single pack - Image 3](https://m.media-amazon.com/images/I/71Fhz6-3VrL.jpg)
![PRIME-LINE Defender Security U 10385, Satin Nickel Door Strike, for Use with 5-1/2” and 6” Hole Spacing On Dead Latch and Deadbolt, Steel, single pack - Image 4](https://m.media-amazon.com/images/I/41+m5-2P31L.jpg)

## Questions & Answers

**Q: What is the measurement from center to center of the two strike holes?**
A: 5 3/8" however, the strike holes are oversized (1 3/4") so there is quite a bit of leeway

**Q: How thick is the plate?**
A: Upon measuring, it appears to be 1/8 of an inch thick.  It feels solid.

**Q: recommended screws? I'd like to use some quality screws but have no idea what to look for, brand, size, etc**
A: Comes with some very well impressive screws so no need to worry. You are in good hands with this baby. I tried as best I could to kick it in and was rewarded with boot marks and a trip to HD to get a solid wood door. Any unwelcomed intruder would need a some serious tools to get in.  Make sure your locks are unpickable too. Check this outFlip Guard Satin Nickel https://www.amazon.com/dp/B00HZD8S8G/ref=cm_sw_r_em_apa_a1KOzbA6T37Y1

**Q: Will this work on a interior door frame which is not 1 3/4"?**
A: No too wide..will work on 1 3/4 but not on 1 3/8. Not unless you trim the door stop

## Customer Reviews

### ⭐⭐⭐⭐⭐ Solid
*by J***S on 30 November 2025*

Well made

### ⭐⭐⭐⭐⭐ Solid product
*by S***E on 25 January 2024*

Good quality thanks

### ⭐⭐⭐⭐⭐ A Ten Dollar Security Upgrade That Actually Makes Sense
*by J***N on 15 May 2026*

Most residential doors come with thin little strike plates held in by half-inch screws. One solid kick and they are done. This is not that. The Defender Security U 10385 replaces both your deadbolt and latch strike plates with a single combined unit, and comes with six 3-inch screws that actually reach into the door framing rather than just the jamb. That is the key difference. Longer screws mean the plate is anchored into the structural part of the frame, which meaningfully increases resistance to forced entry. Installation is manageable for most DIYers. The plate may require some light mortising to sit flush, which takes a sharp chisel and about ten minutes. Pre-drilling for the long screws is strongly recommended before driving them in by hand. Power-driving the 3-inch screws risks cracking the jamb. The satin nickel finish is clean and low-key, and the steel construction feels reassuringly solid. The taller latch and bolt openings accommodate slight door settling or misalignment, which is a nice practical touch. For the price, this is one of the easiest security improvements you can make to an exterior door. Not glamorous, but genuinely effective. If you have not looked at what is currently installed on your door, take a look. You will probably want to upgrade it.

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**Shop now:** [https://www.desertcart.co.za/products/330774109-prime-line-defender-security-u-10385-satin-nickel-door-strike](https://www.desertcart.co.za/products/330774109-prime-line-defender-security-u-10385-satin-nickel-door-strike)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-07-22*