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🔐 Secure your space with sleek precision—because your doors deserve the best.
The Prime-Line J 4516 Flush Mount Extension Bolt is a high-grade, diecast aluminum security solution designed for commercial aluminum or steel doors. Featuring an adjustable 8 to 10 inch bolt length, a flush lever for discreet operation, and a nylon tip for smooth engagement, it comes complete with fasteners and a flush bolt guide for easy installation. Built to withstand heavy use with a Grade 8 hardness rating, this bolt combines durability and style for professional-grade door security.
| ASIN | B00DRZL1LC |
| Best Sellers Rank | #84,456 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #179 in Door Latches & Bolts |
| Brand | PRIME-LINE |
| Color | Aluminum |
| Customer Reviews | 4.6 out of 5 stars 178 Reviews |
| Exterior Finish | Aluminum |
| Fastener Type | Screw |
| Finish Types | Aluminum |
| Global Trade Identification Number | 00049793045164 |
| Grade Rating | Grade 8 |
| Head Style | Flat |
| Head Type | Flat |
| Item Dimensions | 1 x 3.81 x 17.44 inches |
| Item Hardness | Grade 8 |
| Manufacturer | Prime-Line Products |
| Manufacturer Grade | Grade 2 |
| Material | Diecast |
| Material Type | Diecast |
| Metal Type | Diecast |
| Model | J 4516 |
| Number Of Items | 1 |
| Number of Pieces | 1 |
| Part Number | J 4516 |
| Screw Head Style | Flat |
| Screw Point Style | Flush |
| Set Screw Thread Type | Unified National Coarse |
| Size Name | 1 Pack |
| Thread Class | 1A |
| Thread Coverage | Unthreaded |
| Thread Size | 1/4"-16 UNC |
| Thread Style | Right Hand |
| Thread Type | Unc |
| UPC | 049793045164 |
| Unit Count | 1.0 Count |
| Warranty Description | Goods are warranted against manufacturing defects for 1 year. |
K**E
Great Quality and Fast Weekend Shipping
I usually order wholesale parts when I need them, but this Prime-Line J 4516 Aluminum Diecast Flush Mount Extension Bolt was just as good in quality and arrived much faster when ordered on the weekend. The build is sturdy, and it functions just as expected. If you need a reliable extension bolt and don’t want to wait for a bulk order, this is a great option. I’d definitely order again when in a pinch.
D**.
Fit perfect
Nice fit and working great
T**K
Works better than the parking lot and don’t have to worry about it no more
The door lock thing works great slide lock whatever you call it. The fun part is getting the old one out that was broken.
G**T
Fits like a glove
excellent
M**W
Ok
It fitted well.
K**W
Works perfectly to replace the old one in a commercial door.
Perfect replacement. Easy install. The hardest part of this entire process was figuring out this part was called a "flush bolt".
N**L
Review
Quick and easy install. Great fit.
B**I
Perfect replacement!
These replaced the vandalized and broken ones in my double commercial doors perfectly with no alterations. The doors work and lock fine again.
A**R
Great flush bolt. great price.
Easy to install, only took a few minutes.
E**T
super product
perfect fit after a long google/amazon search thank you EH
M**C
Perfect fit
Perfectly fit the door pin on my door. Easy to installed
B**G
Four Stars
the product is good. love it thank
Trustpilot
1 day ago
5 days ago