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The Forster #4 is one of those tools you don't think much about until you strip a screw with the wrong driver and wish you hadn't. This is a single driver ground for a very specific job: Williams 10-32 screws, the kind you run into on sight bases and mount work. The tip carries a 1/4 inch blade width with a 4 inch shank, and the parallel hollow-ground grind is what sets it apart from a hardware-store flathead. Instead of a tapered wedge that wants to cam out and chew up the slot, the sides of the tip run parallel so the blade seats into the bottom of the screw slot where the metal is strongest. That means better torque transfer and far less risk of marring a finished gun.
Each Forster driver in this lineup is matched to real firearm screws rather than sold as a one-size-fits-all. The #4 slots in between the #3 (scope mount screws) and the #5 (guard screws), and its tip dimensions run 0.041 inch thick with a 0.062 inch face. If you work on rifles with Williams sights or 10-32 fasteners, this is the driver that actually fills the slot the way it should. It's also handy enough to cross over to other slotted screws around the bench when the fit lines up.
Forster has been making shooting and reloading tools in the USA since 1935, and these drivers carry that same no-nonsense quality. The blade is hardened steel for a tip that holds its edge and shrugs off flex under pressure, and the red handle is easy to spot in a drawer full of tools. It's a single-piece feel that gives you real leverage without the blade twisting on you.
Buy the individual sizes you need or build out a full set over time. Either way, the #4 earns its spot for anyone who takes care of their firearms and doesn't want to leave tool marks behind.
The #4 is ground specifically for Williams 10-32 screws, which show up on sight bases and mount hardware. Its tip runs 0.041 inch thick with a 1/4 inch blade width and a 0.062 inch face. It'll also work on other slotted screws when the fit matches up.
A standard flathead tapers to a wedge, which tends to cam out and chew up the screw slot and surrounding metal. The Forster's parallel hollow-ground tip keeps its sides flat so it seats into the bottom of the slot where the screw is strongest. That gives you better torque and keeps you from marring a finished firearm.
This is the individual #4 driver, so you can buy just the size you need. Forster also offers an 8-piece set that includes the #4 along with other common sizes if you want to build out a full kit. Picking up singles is a good way to add only the drivers that match your firearms.
Forster Products manufactures these drivers in the USA and has been building shooting and reloading tools since 1935. The blades are made from hardened steel for durability and a tip that holds up under real torque.
| UPC | 757253000065 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 001081 |
| Style | Parallel Tip/Hollow Ground |
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