Klein Tools 631 Tool Set, Made in USA, Nut Driver Set w/Hex Nut Sizes 3/16, 1/4, 5/16, 11/32, 3/8, 7/16 and 1/2-Inch on 3-Inch Full Hollow Shaft, 7-Piece

Klein Tools 631 Tool Set, Made in USA, Nut Driver Set w/Hex Nut Sizes 3/16, 1/4, 5/16, 11/32, 3/8, 7/16 and 1/2-Inch on 3-Inch Full Hollow Shaft, 7-Piece

Q: I lost the 5/16 driver from the set. Can I order a replacement? Where?

Just do an Amazon search for "5/16 Klein nut driver" and it's like $10.

Q: What sizes are these set?

the size's are 3/16 , 1/4 , 5/16 , 11/32 , 3/8 , 7/16 , 1/2

Q: What sizes does this set have?

3/16, 1/4, 5/16, 3/8, 11/32, 7/16, and 1/2"

Q: Are they made in USA?

Mine are clearly marked > Made in the USA!!

Product ID: 4238605

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Details

Brand
KLEIN TOOLS
Number of Items
1
Head Style
Hex
Material
Alloy Steel
Color
Non-magentic

🔧7-piece hex sizes

🛠️3-inch hollow shafts

🇺🇸Made in USA quality

Frequently Bought Together

Klein Tools 631 Tool Set, Made in USA, Nut Driver Set w/Hex Nut Sizes 3/16, 1/4, 5/16, 11/32, 3/8, 7/16 and 1/2-Inch on 3-Inch Full Hollow Shaft, 7-Piece

Klein Tools 65160 Tool Set, Made in USA, Metric Nut Driver Set Sizes 5, 5.5, 6, 7, 8, 9, and 10 mm, 3-Inch Chrome-Plate Hollow Shafts, 7-Piece

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Description

🔩 Own the job with Klein’s pro-grade nut drivers — precision, comfort, and durability in your hands.

BUILT TO OUTLAST - Proudly made in the USA with premium alloy steel and backed by a lifetime warranty.
COMFORT THAT LASTS - Ergonomic cushion-grip handles maximize torque and reduce hand fatigue during extended use.
PRECISION MEETS POWER - 7 essential hex nut drivers covering 3/16" to 1/2" for versatile, on-demand performance.
INSTANT SIZE RECOGNITION - Tip-Ident color-coded handles speed up tool selection and keep your workflow seamless.
WORK SMARTER NOT HARDER - 3-inch full hollow shafts with internal flanges deliver twist-resistant, deep bolt access.

The Klein Tools 631 Nut Driver Set is a 7-piece professional-grade tool kit featuring commonly used hex sizes from 3/16" to 1/2" on 3-inch hollow shafts. Designed with ergonomic cushion-grip handles and color-coded tips for quick identification, this set offers superior torque, comfort, and twist-resistant performance. Made in the USA from premium alloy steel and backed by a lifetime warranty, it’s engineered for durability and precision in electrical, construction, and heavy-duty applications.

Specifications

Brand	KLEIN TOOLS
Number of Items	1
Head Style	Hex
Material	Alloy Steel
Color	Non-magentic
Recommended Uses For Product	Electrical work, DIY projects, Heavy-duty tasks involving various screw sizes and materials
Special Feature	Soft Grip
Item dimensions L x W x H	9 x 8 x 2 inches
Model Name	631
UPC	092644650154
Global Trade Identification Number	00092644650154
Head Size	3/16, 1/4, 5/16, 11/32, 3/8, 7/16, 1/2 inch
Manufacturer	Klein Tools
Part Number	631
Item Weight	1.47 pounds
Product Dimensions	9 x 8 x 2 inches
Item model number	631
Is Discontinued By Manufacturer	No
Size	Non-Magentic
Style	Non-Magentic
Finish	Brushed
Pattern	Tool
Shape	Rectangular
Thickness	1 Inches
Power Source	corded-electric
Item Package Quantity	1
Measurement System	Inch
Certification	ANSI
Special Features	Soft Grip
Usage	personal
Included Components	630-3/16, 630-1/4, 630-5/16, 630-11/32, 630-3/8, 630-7/16, and 630-1/2.
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.

Have a Question? See What Others Asked

I lost the 5/16 driver from the set. Can I order a replacement? Where?

What sizes are these set?

What sizes does this set have?

Are they made in USA?

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