







🛠️ Elevate your toolkit with Klein — where precision meets comfort and every job feels like a win.
The Klein Tools 631 Nut Driver Set offers 7 frequently used hex sizes with 3-inch full hollow shafts for extended reach. Featuring ergonomic cushion grips and color-coded Tip-Ident handles, this professional-grade set ensures quick size recognition, superior torque, and twist-resistant durability. Made in the USA with over 160 years of craftsmanship, it’s engineered for electricians, DIYers, and pros who demand reliability and comfort in every turn.












| ASIN | B0000BYEPS |
| ASIN | B0000BYEPS |
| Best Sellers Rank | #165,419 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #189 in Nut Drivers |
| Brand Name | KLEIN TOOLS |
| Color | Black/ Yellow |
| Country of Publication | USA |
| Country of origin | USA |
| Customer Reviews | 4.8 4.8 out of 5 stars (1,245) |
| Customer reviews | 4.8 4.8 out of 5 stars (1,245) |
| Date First Available | 7 August 2012 |
| Department | Hex Nut Driver Sets |
| Global Trade Identification Number | 00092644650154 |
| Head Size | 3/16, 1/4, 5/16, 11/32, 3/8, 7/16, 1/2 inch |
| Head Style | Three-point, Hexagon |
| Included Components | 630-3/16, 630-1/4, 630-5/16, 630-11/32, 630-3/8, 630-7/16, and 630-1/2. |
| Is Discontinued By Manufacturer | No |
| Item Dimensions | 38 x 191 x 343 millimeters |
| Item Type Name | Nut Driver Set, 3-Inch Full Hollow Shaft, Sizes 3/16, 1/4, 5/16, 11/32, 3/8 7/16 and 1/2-Inch Klein Tools 631 |
| Item model number | 631 |
| Manufacturer | Klein Tools |
| Manufacturer | Klein Tools |
| Manufacturer Part Number | 631 |
| Material Type | Alloy Steel |
| Model Name | 631 |
| Model Number | 631 |
| Number of Items | 1 |
| Product Dimensions | 3.81 x 19.05 x 34.29 cm; 670 g |
| Recommended Uses For Product | Electrical work, DIY projects, Heavy-duty tasks involving various screw sizes and materials |
| Special Feature | Ergonomic |
| UPC | 092644650154 |
| Unit Count | 1 Count |
T**R
Good tools for what I need them for
A**X
Great to use such high-quality tools. I was happy to throw away my China made tools that I had used before.
J**Y
Typical Klein quality tools. Not the least expensive out there, but if you use your tools daily these are a bargain. They also have a lifetime warranty - no questions asked replacement. This set has a wide range of sizes, comfy handles that allow a solid grip, and both labeled and color-coded as to size for a quick grab.
R**Y
I had previously purchased a few of these nutdrivers but not the whole set. After using them and then realizing that more and more I needed other sizes too, I decided to purchase the set. The high quality is what brought me back to these. They have a very strong magnet that will not lose it's hold. I had a hard time deciding whether to get these ones or the ones with the longer shank. I ended up settling on these because I realized that the longer ones wouldn't fit too well in the outside pockets of my toolbag, and would be sticking out too much. Didn't want to risk them falling out and losing one somewhere. Bought these and have been using them extensively ever since. As for the ones I bought before these...I gave them to my father to show him the quality and craftsmanship of these wonderful tools. These may seem to be on the pricey side, but I guarantee that you will not regret it and would purchase again if need be. Thanks for reading....Ray.
M**.
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