Manufacturer | Klein Tools |
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Place of Business | ELKHORN, WI, 53121 US |
Part Number | 630-5/16 |
Product Dimensions | 2.54 x 2.54 x 2.54 cm; 90.72 g |
Item model number | 630-5/16 |
Is discontinued by manufacturer | No |
Size | 3-Inch Shaft |
Colour | Multi |
Style | 5/16-Inch Tip |
Finish | Brushed |
Material | Alloy Steel, Rubber |
Pattern | Nut Driver |
Shape | Rectangle |
Power Source | Hand Powered |
Item Package Quantity | 1 |
Head Style | Hex |
Handle Material | Rubber |
Measurement System | Inch |
Special Features | Adjustable Torque |
Included Components | 5/16" Nut Driver Cushion-Grip 3" Shaft |
Batteries Included? | No |
Batteries Required? | No |
Warranty Description | Klein offers a lifetime warranty on material defects and workmanship for the normal life of the product. |
Item Weight | 90.6 g |
Country of origin | China |

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Klein Tools 630-5/16 Nut Driver, 5/16-Inch Tip Nut Driver with 3-Inch Hollow Shaft, Cushion Grip Handle
Purchase options and add-ons
Colour | Multi |
Brand | KLEIN TOOLS |
Material | Alloy Steel, Rubber |
Item weight | 3.2 Ounces |
Item package quantity | 1 |
Head style | Hex |
Finish type | Brushed |
Manufacturer | Klein Tools |
UPC | 092644650031 |
Global Trade Identification Number | 00092644650031 |
About this item
- Standard length for most applications and fits over long bolts and studs
- Premium chrome plated for smooth feel and corrosion resistance
- Patented Tip-Ident quickly identifies the type of screwdriver and screwdriver tip orientation
- Cushion-Grip handle allows for greater torque and comfort
- Overall length: 6-3/4 inches (171 mm)
Frequently bought together

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Product information
Technical Details
Additional Information
ASIN | B001BY0ESW |
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Customer Reviews |
4.4 out of 5 stars |
鶹 Rank |
|
Date First Available | Aug. 3 2011 |
Feedback
Product description
鶹.ca Product Description
Since 1857, the company operated by Mathias Klein and his descendants to the fifth generation, has grown and developed along with the telecommunications and electrical industries where Klein pliers first found major usages. Today, Klein Tools, Inc. represents much more than Klein pliers. The company's product line has broadened to include virtually every major type of hand tool used in construction, electronics, mining, and general industry in addition to the electrical and telecommunications fields. Klein offers a lifetime warranty on material defects and workmanship for the normal life of the product. The Klein 630-5/16 5/16-Inch Cushion-Grip Hollow-Shank Nut Driver has professional extra-quality features that have made the Klein name famous for hand tools. With a 5/16-Inch hex tip, the 3-Inch hollow shank is exceptionally strong and made of carefully heat-treated and tempered steel for wrench-assisted turning. The shaft has internal flanges that provide an extra-strong, torque-proof anchor in the handle and will not bond or twist in normal use. The Cushion-Grip handle is yellow color coded and resists slippage which allows you to apply greater torque. The patented Tip-Indent quickly identifies the type of screwdriver and screwdriver tip orientation. With a standard length for most applications, this nut driver fits over long bolts and studs. This Klein driver has an overall length of 6-3/4 Inches (171 mm) and meets or exceeds applicable ASME/ANSI specifications. The Klein 630-5/16 5/16-Inch Cushion-Grip Hollow-Shank Nut Driver is sold one item per package.
From the Manufacturer
Since 1857, the company operated by Mathias Klein and his descendants to the fifth generation, has grown and developed along with the telecommunications and electrical industries where Klein pliers first found major usages. Today, Klein Tools, Inc. represents much more than Klein pliers. The company's product line has broadened to include virtually every major type of hand tool used in construction, electronics, mining, and general industry in addition to the electrical and telecommunications fields. Klein offers a lifetime warranty on material defects and workmanship for the normal life of the product. The Klein 630-5/16 5/16-inch Cushion-Grip Hollow-Shank Nut Driver has professional extra-quality features that have made the Klein name famous for hand tools. With a 5/16-inch hex tip, the 3-inch hollow shank is exceptionally strong and made of carefully heat-treated and tempered steel for wrench-assisted turning. The shaft has internal flanges that provide an extra-strong, torque-proof anchor in the handle and will not bond or twist in normal use. The Cushion-Grip handle is yellow color coded and resists slippage which allows you to apply greater torque. The patented Tip-Indent quickly identifies the type of screwdriver and screwdriver tip orientation. With a standard length for most applications, this nut driver fits over long bolts and studs. This Klein driver has an overall length of 6-3/4 inches (171 mm) and meets or exceeds applicable ASME/ANSI specifications. The Klein 630-5/16 5/16-inch Cushion-Grip Hollow-Shank Nut Driver is sold one item per package.
WARNING:
Top Brand: KLEIN TOOLS
Important information
Safety Information
Always wear approved eye protection.NOT insulated. Will NOT protect against electrical shock.
Compare with similar items
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Price | $13.65$13.65 | $26.30$26.30 | $37.79$37.79 | $28.72$28.72 | $51.04$51.04 |
Delivery | — | — | Get it by Monday, Jul 28 | — | Get it by Monday, Jul 28 |
Customer ratings | |||||
Sold by | 鶹.ca | 鶹.ca | 鶹.ca | 鶹.ca | 鶹.ca |
material | Alloy Steel, Rubber | Blend, Blend, Blend, Blend, Blend | Blend, Blend, Blend, Blend, Blend | Blend, Blend, Blend, Blend, Blend | Blend, Blend, Blend, Blend, Blend |
head style | Hex | Hex | Hex | Hex | Hex |
style | 5/16-Inch Tip | 7/16-Inch Tip | Magnetic | Classic | — |
operation mode | — | Mechanical | Mechanical | Mechanical | Mechanical |
finish type | Brushed | Powder Coated | Painted | Painted | Powder Coated |
Videos for this product
0:29
Inch Cushion-Grip Nut Driver with 3-Inch Hollow Shank,5/16-Inch tip, 3 inch ShaftMerchant Video
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Customer reviews
Reviews with images

Pool quality.
Top reviews from Canada
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- Reviewed in Canada on December 24, 2023Verified PurchaseThe wall of the socket on this is a bit thick - too thick if the nut you need to adjust is recessed as in a guitar truss rod. But aside from that, it's a very comfortable and strong addition to any tool box.
- Reviewed in Canada on March 14, 2025Verified PurchaseIt’s a Klein tool. Of course it’s great!
- Reviewed in Canada on January 28, 2025Verified PurchaseOk
- Reviewed in Canada on February 17, 2024Verified PurchaseVery reliable hand tools. 👍
- Reviewed in Canada on January 24, 2024Verified PurchasePerfect for ground screws and hose clamps
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Reviewed in Canada on September 12, 2023Verified Purchasebien
- Reviewed in Canada on December 8, 2023Verified PurchasePerfect for plumbing clamps
- Reviewed in Canada on May 5, 2025Verified PurchaseUsed for couple of weeks and now is not grabbing the screws anymore. It’s spinning around. Pool quality
Used for couple of weeks and now is not grabbing the screws anymore. It’s spinning around. Pool quality
Images in this review
Top reviews from other countries
- GulfBreezeReviewed in the United States on July 30, 2022
5.0 out of 5 stars Klein - Professional Grade - Would Buy Again
Verified PurchaseNo surprise - I love Klein tools. And in my tool bag, I have all Klein tools - screwdrivers, pliers, etc. For much of my work, I find myself needing one of two different sized nut drivers. One is a 1/4in and the other is a 5/16in. I had the 1/4in, but I was missing the 5/16in - until I found this one on 鶹. Can't beat the price - shipped directly to my door - in a day or two. Seriously? Not worth driving to the big box store only to find out they're out. So now my tool bag is complete. I love the rubber handles of these Klein nut drivers. They're just like the handles on Klein screw drivers. The nut drivers have hollow shafts - perfect for long screws. And I especially like the distinct marking on the end of the handle showing the size of the nut driver. It matches my other nut driver perfectly. Looks good. Feels good. Easy to use.
Works great - every time. Klein. I would definitely buy again. And I will. Thanks.
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Huriel CalvarioReviewed in Mexico on April 14, 2019
5.0 out of 5 stars Es muy accesible
Verified PurchaseDe muy buena calidad
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Juan A.Reviewed in Mexico on August 9, 2022
3.0 out of 5 stars Mala calidad el cromo
Verified PurchaseEs muy bueno
El único detalle es q el cro.o comenzó a desprenderse