Hardened V-Blocks
Use these pairs of blocks to support long, round workpieces—secure with the built-in clamps. They’re machined to identical tolerances for precise alignment.
Tolerance | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Max. Workpiece Dia. | Lg. | Wd. | Ht. | V Angle | V Dp. | V Wd. | Squareness | Parallel | Mounting Slot Ht. | Material | Machinable | Each | |
With Clamp | |||||||||||||
| 1 5/8" | 2 1/2" | 2 1/2" | 2" | 90° | 3/4" | 1 1/2" | 0.0002" | 0.0002" | 3/8" | Steel | No | 0000000 | 0000000 |
| 2 7/8" | 3" | 4" | 3" | 90° | 1 3/16" | 2 5/16" | 0.0002" | 0.0002" | 5/8" | Steel | No | 0000000 | 000000 |
| 3 3/4" | 3" | 5" | 3" | 90° | 1 5/8" | 3 1/4" | 0.0002" | 0.0002" | 5/8" | Steel | No | 0000000 | 000000 |
| 4 3/8" | 6" | 6" | 4" | 90° | 2" | 4" | 0.0003" | 0.0003" | 5/8" | Steel | No | 0000000 | 00000000 |
V-Blocks | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Tolerance | Replacement Clamps | |||||||||||||||
| For Max. Workpiece Dia. | Lg. | Wd. | Ht. | Hole Thread Size  | V Angle | V Dp. | V Wd. | Squareness | Parallel | Mounting Slot Ht. | Material | Machinable | Pair | Each | ||
With Clamp | ||||||||||||||||
| 1" | 1 5/8" | 1 1/4" | 1 1/4" | 1/4"-20 | 90° | 7/16" | 13/16" | 0.0002" | 0.0002" | 1/4" | Steel | No | 0000000 | 0000000 | 0000000 | 000000 |
| 1 5/8" | 2 1/2" | 2 1/2" | 2" | __ | 90° | 3/4" | 1 1/2" | 0.0002" | 0.0002" | 3/8" | Steel | No | 0000000 | 000000 | 000000 | 00 |
| 2" | 2 1/2" | 3" | 2" | 3/8"-16 | 90° | 3/4" | 1 1/2" | 0.0002" | 0.0002" | 3/8" | Steel | No | 0000000 | 000000 | 0000000 | 00000 |
| 2 7/8" | 3" | 4" | 3" | __ | 90° | 1 3/16" | 2 5/16" | 0.0002" | 0.0002" | 5/8" | Steel | No | 0000000 | 00000000 | 000000 | 00 |
| 3 3/4" | 3" | 5" | 3" | __ | 90° | 1 5/8" | 3 1/4" | 0.0002" | 0.0002" | 5/8" | Steel | No | 0000000 | 00000000 | 000000 | 00 |
| 4 3/8" | 6" | 6" | 4" | __ | 90° | 2" | 4" | 0.0003" | 0.0003" | 5/8" | Steel | No | 0000000 | 00000000 | 000000 | 00 |
| 5 1/4" | 6" | 7" | 4" | __ | 90° | 2 1/2" | 4 15/16" | 0.0003" | 0.0003" | 5/8" | Steel | No | 0000000 | 00000000 | 000000 | 00 |
Economy V-Blocks
When high precision isn’t critical, choose these V-blocks to hold and position round workpieces. Made from cast iron, they’re a solid, stable choice in high vibration areas. They’re made in pairs to ensure their height, faces, and grooves match, so your workpiece sits level and parallel across both. However, they’re not machined to the same tight tolerances as steel and granite V-blocks. They’re also not as strong as steel under heavy loads, so they may deform or crack over time.
V-blocks with 4 vees have different-sized grooves on each side to support a range of diameters.
Tolerance | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Vees | For Max. Workpiece Dia. | Lg. | Wd. | Ht. | V Angle | V Dp. | V Wd. | Squareness | Parallel | Material | Machinable | Pair | |
Matched Pair | |||||||||||||
| 1 | 1" | 1 1/4" | 2" | 1 7/8" | 90° | 1/2" | 1" | Not Rated | 0.0019" | Iron | Yes | 0000000 | 000000 |
| 1 | 1 3/4" | 15/16" | 2" | 1 1/4" | 90° | 1/8" | 1" | 0.0012" | 0.0012" | Iron | Yes | 0000000 | 00000 |
| 1 | 2 3/8" | 1 1/4" | 3" | 2 3/8" | 90° | 13/16" | 1 3/4" | 0.0012" | 0.0012" | Iron | Yes | 000000 | 00000 |
| 1 | 2 15/16" | 1 5/8" | 4" | 2 5/8" | 90° | 1" | 2 3/16" | 0.0012" | 0.0012" | Iron | Yes | 000000 | 00000 |
| 1 | 3 1/8" | 2" | 5" | 3 3/16" | 90° | 1 1/8" | 2 3/8" | 0.0016" | 0.0016" | Iron | Yes | 000000 | 000000 |
| 1 | 4 5/16" | 2 1/2" | 6" | 3 1/2" | 90° | 1 1/2" | 3 3/16" | 0.002" | 0.002" | Iron | Yes | 000000 | 000000 |
| 1 | 4 1/2" | 5 1/2" | 8" | 8" | 90° | 2 1/4" | 4 1/2" | Not Rated | 0.0019" | Iron | Yes | 0000000 | 000000 |
| 1 | 4 15/16" | 2" | 6" | 4" | 90° | 2 1/8" | 4 3/16" | 0.002" | 0.002" | Iron | Yes | 0000000 | 000000 |
| 1 | 4 15/16" | 4" | 7" | 5 1/2" | 90° | 1 11/16" | 3 5/8" | 0.002" | 0.002" | Iron | Yes | 0000000 | 000000 |
| 1 | 5" | 6 5/8" | 10" | 10" | 90° | 2 1/2" | 5" | Not Rated | 0.0019" | Iron | Yes | 0000000 | 000000 |
| 1 | 6 1/4" | 4" | 8" | 5 1/2" | 90° | 2" | 4" | 0.0024" | 0.0024" | Iron | Yes | 0000000 | 000000 |
| 1 | 6 5/16" | 2 1/2" | 7 1/4" | 5 1/4" | 90° | 2 5/8" | 5 1/8" | 0.0024" | 0.0024" | Iron | Yes | 000000 | 000000 |
| 1 | 7 7/8" | 2 7/8" | 8 7/8" | 6 1/2" | 90° | 3 7/16" | 6 11/16" | 0.0024" | 0.0024" | Iron | Yes | 000000 | 000000 |
| 4 | 2" | 1 3/8" | 3 3/4" | 2 3/4" | 90° | 1" 13/16" 5/8" 3/8" | 2" 1 3/16" 1 9/16" 3/4" | 0.0012" | Not Rated | Iron | Yes | 0000000 | 000000 |
| 4 | 2 3/8" | 1 3/8" | 4 3/4" | 4 3/4" | 90° | 1 3/16" 1" 13/16" 5/8" | 2 3/8" 1 9/16" 2" 1 3/16" | 0.0012" | Not Rated | Iron | Yes | 0000000 | 000000 |
Machinable V-Blocks
Easier to machine than hardened steel, these blocks can be customized to fit a workpiece. Mount them to a work surface using the side slots and setup clamps.
V-blocks with clamp have a built-in clamp for securing workpieces.
Tolerance | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Max. Workpiece Dia. | Lg. | Wd. | Ht. | V Angle | V Dp. | V Wd. | Squareness | Parallel | Mounting Slot Ht. | Material | Each | |
Standard | ||||||||||||
| 1 5/8" | 2 1/2" | 2 1/2" | 2" | 90° | 3/4" | 1 1/2" | 0.0002" | 0.0002" | 3/8" | Steel | 0000000 | 0000000 |
| 2 7/8" | 3" | 4" | 3" | 90° | 1 3/16" | 2 5/16" | 0.0002" | 0.0002" | 5/8" | Steel | 0000000 | 000000 |
| 3 3/4" | 3" | 5" | 3" | 90° | 1 5/8" | 3 1/4" | 0.0002" | 0.0002" | 5/8" | Steel | 0000000 | 000000 |
| 4 3/8" | 6" | 6" | 4" | 90° | 2" | 4" | 0.0003" | 0.0003" | 5/8" | Steel | 0000000 | 000000 |
With Clamp | ||||||||||||
| 1 5/8" | 2 1/2" | 2 1/2" | 2" | 90° | 3/4" | 1 1/2" | 0.0002" | 0.0002" | 3/8" | Steel | 0000000 | 000000 |
| 2 7/8" | 3" | 4" | 3" | 90° | 1 3/16" | 2 5/16" | 0.0002" | 0.0002" | 5/8" | Steel | 0000000 | 000000 |
| 3 3/4" | 3" | 5" | 3" | 90° | 1 5/8" | 3 1/4" | 0.0002" | 0.0002" | 5/8" | Steel | 0000000 | 000000 |
| 4 3/8" | 6" | 6" | 4" | 90° | 2" | 4" | 0.0003" | 0.0003" | 5/8" | Steel | 0000000 | 00000000 |
Tolerance | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Max. Workpiece Dia. | Lg. | Wd. | Ht. | V Angle | V Dp. | V Wd. | Squareness | Parallel | Mounting Slot Ht. | Material | Pair | |
Standard | ||||||||||||
| 1 5/8" | 2 1/2" | 2 1/2" | 2" | 90° | 3/4" | 1 1/2" | 0.0002" | 0.0002" | 3/8" | Steel | 0000000 | 0000000 |
| 2 7/8" | 3" | 4" | 3" | 90° | 1 3/16" | 2 5/16" | 0.0002" | 0.0002" | 5/8" | Steel | 0000000 | 000000 |
| 3 3/4" | 3" | 5" | 3" | 90° | 1 5/8" | 3 1/4" | 0.0002" | 0.0002" | 5/8" | Steel | 0000000 | 00000000 |
| 4 3/8" | 6" | 6" | 4" | 90° | 2" | 4" | 0.0003" | 0.0003" | 5/8" | Steel | 0000000 | 00000000 |
With Clamp | ||||||||||||
| 1 5/8" | 2 1/2" | 2 1/2" | 2" | 90° | 3/4" | 1 1/2" | 0.0002" | 0.0002" | 3/8" | Steel | 0000000 | 000000 |
| 2 7/8" | 3" | 4" | 3" | 90° | 1 3/16" | 2 5/16" | 0.0002" | 0.0002" | 5/8" | Steel | 0000000 | 00000000 |
| 3 3/4" | 3" | 5" | 3" | 90° | 1 5/8" | 3 1/4" | 0.0002" | 0.0002" | 5/8" | Steel | 0000000 | 00000000 |
| 4 3/8" | 6" | 6" | 4" | 90° | 2" | 4" | 0.0003" | 0.0003" | 5/8" | Steel | 0000000 | 00000000 |
Miniature V-Blocks
Place into larger V-blocks to hold small shafts and cylinders. Set includes two clamps that fit different workpiece diameters.
For Workpiece Dia. | Tolerance | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Pieces | Min. | Max. | Lg. | V Angle | V Dp. | Squareness | Parallel | Material | Machinable | Includes | Each | |
With Clamp | ||||||||||||
| 2 | 1/32" | 9/32" | 2 3/8" | 90° | 1/8" | 0.0002" | 0.0002" | Steel | No | 1 V-Block for 1/32" to 5/32" Workpieces—5/8" Wd. × 1" Ht. × 1/4" V Wd. 1 V-Block for 3/64" to 9/32" Workpieces—3/4" Wd. × 1 1/4" Ht. × 5/16" V Wd. | 00000000 | 0000000 |
Any-Size V-Blocks
To hold and support large or small round or cylindrical workpieces, position these two-piece V-blocks to accommodate any diameter. They are a good choice when frequently changing workpiece sizes.
Tolerance | Mounting Holes | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Max. Workpiece Dia. | Lg. | Wd. | Ht. | Squareness | Parallel | No. of | For Screw Size | Style | Ctr.-to-Ctr. (A) | Ctr.-to-Ctr. (B) | Mounting Fasteners Included | Material | Machinable | Each | |
| 24" | 2 1/4" | 3 1/2" | 3" | 0.001" | 0.001" | 2 | 1/2" | Counterbored | 1 1/2" | 2 1/2" | No | Steel | No | 0000000 | 0000000 |
Adjustable-Angle V-Blocks
Use this block to hold workpieces at precise angles. Adjust the block to the desired angle, then tighten the set screw on the bottom of the block to lock it in place.
Tolerance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Max. Workpiece Dia. | Lg. | Wd. | Ht. | Accuracy | Range of Motion | V Angle | V Dp. | V Wd. | Squareness | Parallel | Material | Machinable | Container Type | Each | |
| 1 3/4" | 1 3/4" | 3 3/4" | 2" | ±0.003° | 0°-90° | 90° | 1 5/32" | 1 1/8" | 0.0002" | 0.0002" | Steel | No | Wood Case | 0000000 | 0000000 |
Magnetic V-Blocks
Magnetic surfaces on the bottom, back, and one V face of these blocks eliminate the need for mounting clamps and bolts. Turn the lever to switch the magnetic force on and off.
Granite V-Blocks
Made in pairs, these V-blocks are precision ground to tight tolerances for straight sides, square corners, and centered grooves. Since their top surfaces are perfectly matched, they keep the centerline of your workpiece level and parallel. These blocks are often used to precisely align round workpieces for measuring or inspecting. They come with a certificate traceable to NIST confirming their accuracy. Unlike metal blocks, these black granite blocks don’t rust or warp from temperature changes. They’re also nonmagnetic, so they won’t interfere with sensitive electronic equipment.
Inspection Grade A blocks are used for general inspections and quality-control work. They’re slightly less precise than Grade AA blocks.
Laboratory Grade AA blocks have the tightest tolerance for the highest level of accuracy. They’re best for inspections and quality-control work in calibration labs.
For Workpiece Dia. | Tolerance | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min. | Max. | Lg. | Wd. | Ht. | V Angle | V Dp. | V Wd. | Squareness | Parallel | Material | Certificate Type | Pair | |
Matched Pair | |||||||||||||
Inspection Grade A | |||||||||||||
| 1/2" | 2" | 3" | 3" | 3" | 90° | 1" | 2 1/2" | 0.0002" | 0.0002" | Black Granite | Certificate of Accuracy Traceable to NIST | 00000000 | 000000000 |
| 3/4" | 4 1/2" | 6" | 6" | 6" | 90° | 2 1/2" | 5" | 0.0002" | 0.0002" | Black Granite | Certificate of Accuracy Traceable to NIST | 00000000 | 00000000 |
Laboratory Grade AA | |||||||||||||
| 1/2" | 2" | 3" | 3" | 3" | 90° | 1" | 2 1/2" | 0.0001" | 0.0001" | Black Granite | Certificate of Accuracy Traceable to NIST | 00000000 | 00000000 |
| 3/4" | 4 1/2" | 6" | 6" | 6" | 90° | 2 1/2" | 5" | 0.0001" | 0.0001" | Black Granite | Certificate of Accuracy Traceable to NIST | 00000000 | 00000000 |