# Prime-Line Diecast Brass, Night Latch and Locking Cylinder

**Brand:** [Prime-Line](https://shop.coreranger.com/brands/Prime-Line)
**SKU:** U 9971
**Price:** $21.54 · in stock
**URL:** https://shop.coreranger.com/product/prime-line-diecast-brass-night-latch-and-locking-cylinder-100194082

## Specifications

| Spec | Value |
|---|---|
| Model # | U 9971 |
| Internet # | 100194082 |
| Returnable | 90-Day |
| Store SKU # | 478998 |
| Commercial/Residential | Residential |
| Required Door Thickness (in.) | 1-3/8 in to 1-3/4 in |
| Safety & Security Product Type | Lock & Door Reinforcer |

## Description

The Prime‑Line U 9971 Single Cylinder Deadlock provides dependable surface‑mounted door security for homeowners seeking proven protection against forced entry. Constructed from durable diecast metal with a corrosion‑resistant white finish this jimmy‑resistant lock is designed to help secure hinged doors by preventing the spreading and prying of door frames. Featuring a surface‑mounted cross bolt locking mechanism the U 9971 helps anchor the door to the jamb for enhanced resistance against physical attack. The keyed single cylinder design includes a tamper‑resistant shutter guard to help deter lock tampering and picking. Designed for use on wood, metal or resin doors 1-3/8 to 2-3/8 in. thick, this deadlock installs easily using the included mounting hardware and standard household tools making it a practical choice for DIY installation. Each set includes the deadlock, angled keeper, two keys and installation components for a complete and reliable door security solution.

• Deadbolt, Brushed Brass Finish, Angle Strike, Single Cylinder
• Features a durable bronze construction
• Comes with 2 keys