Description
If you're running the big 1-1/4" dies on a Forster Co-Ax XL, this is the lock ring that keeps them where you set them. Instead of relying on a set screw that bites straight into the die body, the Forster crossbolt design clamps evenly around the entire circumference of the die. That full-contact grip is what gives you repeatable die alignment load after load, and it's the same principle Forster builds into their Bench Rest dies.
What Sets the Forster Crossbolt Lock Ring Apart
The magic here is the crossbolt itself. A single steel bolt pulls the two ends of the ring together, squeezing the collar tight around the die rather than gouging into the threads. That means no canting, no high spots, and no wallowed-out threads over time. You tighten or back it off with a 7/64" hex key, so there's no wrestling with a screwdriver or risking a slipped flathead that mars your setup. Dial in your sizing or seating depth, snug the bolt, and it stays put.
Sizing and Fit for the 1-1/4" Die Lock Ring
This is the larger 1-1/4" (1.250") model, part number DIE-G-30, cut for 1-1/4"-12 thread dies rather than the common 7/8"-14 size. It's the ring you want for the oversized dies the Co-Ax XL was designed to run, letting you take advantage of the press's floating alignment with the heavier calibers it handles. If your dies are standard 7/8"-14, you'll want Forster's smaller lock ring instead, so double-check your die threads before ordering.
A Simple Upgrade That Pays Off
Lock rings are one of those small parts that quietly make or break your consistency at the bench. A ring that shifts or sits crooked throws off your headspace and bullet seating, and that shows up on paper. Swapping in a Forster crossbolt ring is a cheap, five-minute fix that gives you confidence your dies are locked exactly where you left them every single time you sit down to load.
Key Specifications
- Manufacturer: Forster Products
- Manufacturer Part Number: DIE-G-30
- UPC: 757253990168
- Ring Diameter: 1-1/4" (1.250")
- Thread Size: 1-1/4"-12
- Design: Full-diameter crossbolt clamp
- Adjustment Tool: 7/64" hex key (Allen wrench)
- Crossbolt Fastener: Steel socket cap screw
- Intended Use: Forster Co-Ax XL press and 1-1/4" dies
- Quantity: Single (1)
- Country of Origin: United States
What’s Included
- One (1) Forster 1-1/4" crossbolt die lock ring with crossbolt screw installed
Frequently Asked Questions
What thread size does the 1-1/4" Forster lock ring fit?
This DIE-G-30 model is the larger 1-1/4"-12 thread version, not the common 7/8"-14 size. It's made for the oversized dies used in the Forster Co-Ax XL press. If your dies use standard 7/8"-14 threads, you'll want Forster's smaller lock ring instead.
How does the crossbolt design protect my die threads?
A traditional lock ring uses a set screw that tightens directly against the die threads, which can cant the ring or chew up the threads over time. The Forster crossbolt pulls the collar tight around the whole die instead, so the clamping force is even and the threads stay undamaged. That full-contact grip also gives you more consistent alignment every time you reset the die.
What tool do I need to tighten the lock ring?
Tightening or loosening the steel crossbolt takes only a 7/64" hex key, also called an Allen wrench. There's no screwdriver fumbling or risk of slipping and marring your die. Just snug it down once you've set your die depth and it holds.
Is this sold as a single ring?
Yes, this listing is for one individual 1-1/4" crossbolt lock ring. The crossbolt screw comes installed and ready to clamp onto your die. Forster also offers multi-packs if you need to outfit a full set of dies.




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