🔐 Secure your space with precision and style — don’t settle for less!
The Prime-Line J 4516 is a single-pack, flush mount extension bolt crafted from durable diecast aluminum with a Grade 8 hardness rating. Designed for commercial aluminum or steel doors, it features an adjustable 8-10 inch extension and a nylon tip for smooth, quiet operation. Finished in sleek aluminum, it includes a flush bolt guide and is backed by a 1-year warranty, making it a reliable, professional-grade locking solution.
| Material | Diecast |
| Grade Rating | Grade 8 |
| Exterior Finish | Aluminum |
| Manufacturer Grade | Grade 2 |
| Head Style | Flat |
| Color | Aluminum |
| Fastener Type | Screw |
| Brand | PRIME-LINE |
| Thread Type | Unc |
| Thread Style | Right Hand |
| Item Hardness | Grade 8 |
| Size | 1 Pack |
| Metal Type | Diecast |
| Set Screw Thread Type | Unified National Coarse |
| Number of Pieces | 1 |
| UPC | 049793045164 |
| Global Trade Identification Number | 00049793045164 |
| Manufacturer | Prime-Line Products |
| Part Number | J 4516 |
| Item Weight | 8.8 ounces |
| Product Dimensions | 1 x 3.81 x 17.44 inches |
| Country of Origin | Taiwan |
| Item model number | J 4516 |
| Finish | Aluminum |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | Goods are warranted against manufacturing defects for 1 year. In no case is Prime-Line responsible for user related damage or damage incurred during installation. Warranty is void if products are subjected to abnormal conditions, misapplication or abuse. |
D**.
Fit perfect
Nice fit and working great
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.
G**T
Fits like a glove
excellent
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".
M**W
Ok
It fitted well.
G**T
works fairly well.
works fairly well.
M**N
Item as described
All the measurements they give are correct. Make sure you measure your door
N**L
Review
Quick and easy install. Great fit.
Trustpilot
1 week ago
1 month ago
