7/16-Inch Insulated Nut Driver 6-Inch Hollow Shaft
646-7/16-INS - spec sheet
Features
- Thick, exceptionally tough, high-dielectric white inner coating is bonded to the tool and a flame retardant, impact-resistant, bright orange outer coating
- Hollow shafts make it possible to work on stacked circuit boards or other long bolt applications
- Tip-Ident quickly identifies nut driver size
- Cushion-Grip™ handles for greater torque and comfort
- Tip-Ident Quickly Identifies Nut Driver Size
- Made in USA
- Two layers of insulation provide protection against electric shock
- Individually tested to exceed the IEC 60900 and ASTM F1505 standards, for insulated tools, and clearly marked with the official 1000-volt rating symbol
Warnings
- Only use tools that are marked with the official international 1000-volt rating symbol shown above, if there is any chance that the tools will make contact with an energized source.
- Do NOT touch uninsulated portion of the tool or any conductive object when either might contact an energized source.
- Always inspect your tools before use. Destroy tool if insulation becomes damaged in any way.
- Wear approved eye protection. Always inspect your tools before use. Do not use if orange coating cracks, breaks or becomes damaged. Destroy tool if white layer shows through orange layer.
- Whenever possible, always de-energize lines and equipment prior to working on or around them. Klein insulated tools are designed only to reduce the chance of injury where the tool may make contact with an energized source.
- Because moisture, films, or other surface contaminants are conductive, Klein insulated tools must be kept clean, dry, and free of any surface contaminants.
646-7/16-INS - spec sheet
Manufacturer Resources
646-7/16-INS Spec Sheet
Product Specs
- Department:
- Electrical
- Product Material:
- Steel
- Color Code:
- Brown
- Measurement Standard:
- SAE
- Shaft Length:
- 6" (15.2 cm)
- Product Depth:
- 10.3130 in
- Nut Driver Sizes:
- 7/16"
- Product Subgroup:
- Screwdrivers & Drivers
- Overall Length:
- 10.313" (26.2 cm)
- Product Group:
- Hand Tools
- Product Type:
- Nut Driver
Klein Tools 646-7/16-INS – Frequently Asked Questions
1) What is the difference between the 646-7/16, 646-7/16-INS and 646-7/16M nut drivers?
Same 7/16-inch SAE hex opening on all three, with the difference in the shaft. The 646-7/16 is the standard hollow-shaft driver, the 646-7/16-INS adds the two-layer 1000-volt insulation, and the 646-7/16M has a magnetic tip for holding the nut or bolt on the driver. Pick the INS for energized panel work, the M for overhead or blind fastening where you cannot start a nut by hand.
2) Will a 7/16 nut driver with a hollow shaft reach down a long threaded stud?
That is what the hollow shaft is for. The shaft measures 6 inches (15.2 cm) and is bored through, so the protruding end of a long bolt or stud passes up inside it instead of bottoming out. It is the usual way to get at nuts on stacked circuit boards or long bolt applications where a solid-shaft driver stops as soon as it hits the thread. Overall tool length is 10.313 inches (26.2 cm).
3) Can I keep using an insulated nut driver if the orange coating gets nicked?
No. Klein's instruction is to destroy the tool if the insulation is damaged in any way, and specifically if the white inner layer shows through the orange outer layer, or if the orange cracks or breaks. The two coatings are a system, so a nick that exposes the white one means the tool is out of service. Keep insulated tools clean and dry too, since moisture, films and surface contaminants conduct.
4) How do I tell which size Klein nut driver I've grabbed out of the pouch?
Klein marks the size on the end of the handle with Tip-Ident, so you read 7/16 off the butt of the driver without pulling the whole set out. The handle color code on the 646-7/16 is brown, which is how techs who standardize on Klein sets identify sizes by sight.
5) What is the shaft made of on the Klein 646 series nut driver?
Steel shaft with a Cushion-Grip handle. The handle shape is what lets you put real torque on a nut without chewing up your palm, which matters on a long run of panel screws or terminal nuts.
How fast can I get the Klein Tools 646-7/16-INS delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Klein Tools 646-7/16-INS come with a warranty?
Absolutely. The Klein Tools 646-7/16-INS is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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