Choosing a machine vise for your workholding fixture and metrology needs comes down to jaw capacity, precision, and budget. Two options at different price points show how those priorities play out: the Interstate horizontal machine vise and the Dayton fixed-base machine vise. One keeps a low profile; the other offers a wider bite. Let's see which one fits your bench.
Quick verdict
If you need more room to clamp and don't want to spend as much, the Dayton is the pick. It costs $79 less and offers more capacity.
Comparison
| Feature | Interstate Horizontal 4" | Dayton 6" Fixed Base |
|---|---|---|
| Price | USD 199.00 | USD 119.99 |
| Jaw width / opening | 4" / 4" | 6" / 6" |
| Throat depth | 1-1/8" | 2" |
| Base | No swivel base included | Fixed base |
| Condition | New - Open box | New |
| Precision details | Precision yes | Jaw deflection 0.002 in @ 2000 lbs; jaw plate square to 0.002 in; bed/base parallel to 0.001 in |
Where each product wins
- Interstate: It has a 4,409 lb load capacity, which is a strong number for its class. The compact horizontal body fits in tight spaces, and the low-profile design helps it fit under a drill head or on a crowded bench.
- Dayton: It offers more clamping room than the Interstate and includes specific tolerance numbers for jaw deflection, squareness, and parallelism. It also gives you a few mounting options thanks to its ability to be turned on either side or set.
Product notes
Interstate Horizontal Machine Vise 4" Jaw
This horizontal-style machine vise with a 4" jaw width and matching 4" opening is a precision unit rated for 4,409 lb. The 6.5" base width and 14.85" overall length make it a stable presence on a mill table; the length also tells you how much clearance you need for the handle. The catch: it's a new open-box unit and doesn't include a swivel base. If you need angled clamping, you'll need to source a base separately. The compact horizontal shape works well in tight spaces, and the low-profile design keeps the setup out of the way. Because the orientation is horizontal, the body sits low, which is useful when working under a drill head. The open-box condition is the main trade-off, so inspect the contents when it arrives.
Dayton 4TK04 6" Machine Vise with Fixed Base
This fixed-base vise offers a 6" jaw opening and a 2" throat depth, which is enough for mid-size workpieces. The tolerances are clearly laid out: jaw deflection of 0.002" at 2,000 lb, jaw plate square to 0.002", and bed/base parallel to 0.001". The deeper throat gives you more room to reach into taller workpieces, which helps when you're clamping blocks or plates. The tool can be turned on either side or set, giving you a few mounting options. The trade-off is the fixed base: you can't angle the vise without unbolting it. For drilling and milling flat parts, this is a capable workhorse, and the simple base design adds rigidity.
Final choice by use case
Choose based on the biggest workpiece you handle. If that part is small enough for a compact bench vise, the Interstate's horizontal body earns its place. If your work frequently exceeds that capacity, the Dayton's extra room is the practical pick. For most mixed-use shops, the Dayton will see more action.
