Jamison HCR Door Strip Curtain Replacement: The Fastener Problems Nobody Warns You About
May 30, 2026 · Cal Gaskets
Jamison HCR doors are workhorses. You'll find them in grocery store back-of-house walk-ins, dairy coolers, and warehouse freezer entries all over Northern California. When the strip curtains wear out — and they do — replacing them sounds straightforward: remove the old bracket, hang the new curtain, done.
In practice, these doors have a couple of recurring fastener issues that can turn a 30-minute job into an hour-long headache if you don't know what you're walking into. Here's what we keep running into and how we work around it.
Problem 1: The Spot-Welded Spinning Bolt
The red mounting bracket that holds the strip curtain to the door frame is secured with a series of bolts. On the surface, this looks like a standard removal — back out the bolts, pull the bracket, swap the curtain.
The problem: on a number of these doors, one or more of those bolts were spot-welded to the bracket during manufacturing. You put a wrench on the nut, start turning, and the bolt just spins with it. There's nothing to grip on the other side because the bolt head is fused to the bracket itself.
This is a manufacturing shortcut — spot-welding the bolt saves a step during assembly but creates a problem for anyone who ever needs to service the door. On an HCR door that's been in place for a few years, the weld may be corroded or the bolt may have seized, making it even harder to deal with.
How We Handle It
- →Locking pliers on the bracket face. If you can get a firm grip on the bracket itself while turning the nut, you can sometimes break the weld or stop the spinning long enough to get the fastener off. It helps to have two sets of hands.
- →Cut it off. An angle grinder or oscillating tool against the bolt shank is usually the fastest resolution when the weld is solid. It's destructive but clean — you're replacing the curtain anyway, and in most cases the bracket hardware can be replaced with standard fasteners on reassembly.
- →Replace with a machine screw and nut. Once the old bolt is out, we use a proper machine screw with a nut on the back — no welding, no surprises for the next tech who comes through.
Problem 2: Self-Tapping Screws Driven Into Rivnuts
The second problem isn't from the factory — it's from a previous tech who was either in a hurry or didn't have the right hardware on the truck.
Jamison HCR doors use rivnuts — also called rivet nuts or nutserts — installed into the door frame to provide threaded attachment points for the curtain bracket. A rivnut is a threaded insert that's crimped into a hole in sheet metal, giving you a proper machine thread in a material that's too thin to tap directly.
When a previous tech can't find the right machine screw, they sometimes reach for a self-tapping screw instead. Self-tapping screws are designed to cut their own threads into bare material — but a rivnut already has precision threads inside it. Driving a self-tapper into a rivnut cross-threads the insert, strips the internal threads, and leaves you with a fastener hole that nothing will thread into correctly anymore.
What you see in the photo above: ice buildup around a damaged bracket attachment point, a stripped rivnut, and the remnants of a self-tapper that partially seized in the process. By the time we got to this door, the bracket was barely hanging on.
How We Handle It
We drilled out the self-tapping screw and the damaged rivnut entirely, then replaced the whole thing with a standard nut and bolt. Clean, solid, and the next person to service this door won't run into the same problem.
The Takeaway
Strip curtain replacement on a Jamison HCR door is not as straightforward as it looks. These are real fastener problems that require the right tools, the right hardware, and the experience to know what you're looking at.
Sending someone who isn't trained to do this job doesn't just slow things down — it can make every future replacement harder, and in some cases make it impossible to service the door at all without replacing the entire bracket. What should be a routine maintenance call turns into a repair job, then a parts job, then a much bigger bill than anyone budgeted for.
When you work with someone who does this regularly, you get the job done right the first time — and you leave the door in better shape than you found it.
Need Strip Curtains Replaced? We Know These Doors.
Cal Gaskets services Jamison HCR doors and all major walk-in cooler and freezer door systems across Northern California. We carry the hardware to handle what we find — no return trips, no shortcuts.