Klein Tools Square Recess Scre...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$6.49
Klein Tools Square Recess Screwdriver 8-Inch Shank Chrome Plated

Klein Tools Square Recess Screwdriver 8-Inch Shank Chrome Plated

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Model: 665

In Stock (leaves warehouse same day if ordered before 3pm ET)

$6.49
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Klein Tools Square Recess Screwdriver #1 Tip 8-Inch Shank Chrome Plated Cushion Grip

Professional-Grade Square Drive Screwdriver for Electrical Applications

The Klein Tools Square Recess Screwdriver delivers professional-grade fastening performance for electrical installation and maintenance work. This precision-engineered screwdriver features a heat-treated chrome plated shaft with Cushion-Grip handle designed for electricians, linemen, and electrical professionals, providing the reliable performance and industry-leading quality that tradesmen demand from America's most trusted tool manufacturer.

Professional Features & Benefits

Precision Engineering & Durability

  • Heat-Treated Chrome Plated Shaft - Superior corrosion resistance and extended tool life for demanding electrical environments
  • Precision-Machined #1 Square Tip - Exact fit reduces cam-out and fastener damage while maximizing torque transfer
  • Internal Flanges Design - Solid twist-resistant blade anchor prevents handle separation under high torque applications
  • Made in USA Quality - American craftsmanship ensures consistent performance and reliability for professional use

Ergonomic Comfort & Safety

  • Cushion-Grip Handle - Enhanced comfort and torque control reduces hand fatigue during extended use
  • Tip-Ident Color Coding - Quick visual identification of screwdriver type and tip orientation for efficient tool selection
  • ASME/ANSI Compliance - Meets or exceeds applicable safety and performance specifications for professional electrical work

Technical Specifications

Overall Length: 11.75 inches (29.9 cm), Shank Length: 8 inches (20.3 cm), Weight: 4.8 oz (136 g), Tip Size: #1 Square Recess, Material: Heat-treated steel construction, Finish: Chrome plated for corrosion resistance, Handle: Cushion-Grip design, Insulation: Not insulated - not for live electrical work

Installation & Usage

  1. Select appropriate square recess fastener and verify #1 tip size compatibility
  2. Insert precision-machined tip fully into square recess to prevent cam-out
  3. Apply steady downward pressure while turning to maximize torque transfer
  4. Use Cushion-Grip handle for enhanced control during fastening operations
  5. Utilize Tip-Ident color coding for quick tool identification in mixed fastener applications
  6. Clean chrome plated shaft regularly to maintain corrosion resistance and performance

Professional Applications

Ideal for:

  • Electrical Installation - Combination head receptacles, switches, and electrical panel assembly
  • Commercial Electrical - Square head screws in electrical enclosures and junction boxes
  • Residential Wiring - Outlet and switch installation with square recess fasteners
  • Industrial Maintenance - Equipment panels and electrical control systems
  • Telecommunications - Network equipment and communication panel fasteners
  • HVAC Systems - Control panels and electrical connections in heating and cooling equipment
  • Construction Work - Electrical rough-in and finish work with square drive fasteners
  • Facility Maintenance - Electrical system repairs and component replacement

Chrome Plated Construction Advantage

Klein Tools heat-treated chrome plated shaft provides superior corrosion resistance and durability compared to standard steel construction. The precision-machined tip ensures exact fit with square recess fasteners, reducing wear and extending both tool and fastener life. Internal flanges create a solid blade anchor that prevents handle separation under high torque applications, delivering the reliability electrical professionals demand.

Why Choose Klein Tools Quality?

Since 1857, Klein Tools has maintained its commitment to manufacturing the highest quality hand tools for electrical professionals. Each screwdriver undergoes rigorous testing to meet ASME and ANSI specifications, ensuring consistent performance and safety. The Cushion-Grip handle design and precision-machined tips reflect Klein's dedication to combining traditional American craftsmanship with innovative engineering for the modern electrical tradesman.

Manufacturer Resources

666 Spec Sheet
665 Spec Sheet

Product Specs

Shank Length:
8" (20.3 cm)
Department:
Electrical
Insulated:
No
Product Type:
Screwdriver
Item Width:
1.0000 in
Item Height:
1.0000 in
Tip Type:
Square-Recess
Magnetic:
No
Product Subgroup:
Screwdrivers & Drivers
Shank Type:
Round
Product Group:
Hand Tools
Country Of Origin:
United States
Product Width:
1 in
Product Height:
1 in

Klein Tools 665 – Frequently Asked Questions

1) Can I use the Klein 665 square recess screwdriver on live electrical circuits?
No. The Klein square recess screwdriver is not insulated, so it must not be used on energized conductors or live terminals. For live work you need a VDE-rated insulated screwdriver tested to 1000V. This one is for de-energized panel, device and enclosure work only.
2) What square drive sizes does this Klein screwdriver come in, and which one fits a standard receptacle or switch screw?
Two tip sizes: #1 square (model 665) and #2 square (model 666). Combination-head receptacle and switch screws commonly take a #2 square driver, while #1 suits the smaller square-recess fasteners found in enclosures and equipment panels. Both share the same 8 inch round shank.
3) How deep can this screwdriver reach into an electrical enclosure?
The shank measures 8 inches (20.3 cm), with an overall length of 11.75 inches (29.9 cm) including the handle. That gives you reach down into deep panel cabinets and junction boxes without crowding your knuckles against the enclosure wall.
4) Is a square recess (Robertson) screwdriver better than a Phillips for panel work?
For square-recess fasteners, yes, and that is the point of this driver. The precision-machined square tip seats fully in the recess and reduces cam-out, so you transfer more torque without chewing the screw head. A Phillips in a square recess will slip and damage the fastener. Keep both on the truck, since combination heads accept either but square drive gives better bite.
5) Does this Klein screwdriver meet ASME/ANSI tool specifications?
Yes. Klein states the screwdriver meets or exceeds applicable ASME and ANSI safety and performance specifications for professional electrical work, and it is made in the USA. That is usually enough for MRO and institutional tool-crib purchasing specs that call for ASME-compliant hand tools.
6) Will this Klein square driver hold the screw on the tip?
No, the tip is not magnetized. Square recess drive grips the fastener mechanically better than a Phillips does, which helps when you are starting a screw one-handed, but if you need the screw to stick to the bit you will want a magnetic driver or a magnetizer.
7) Will the handle twist loose on this screwdriver under heavy torque?
The blade is anchored into the Cushion-Grip handle with internal flanges, which is Klein's twist-resistant anchor design to keep the shank from spinning or pulling out of the handle under high torque. The shaft itself is heat-treated steel with chrome plating for corrosion resistance.
8) How do I tell the #1 from the #2 square driver once they are both in my pouch?
Klein puts Tip-Ident color coding on the handle, so the tip type and size are identifiable at a glance without reading the stamp on the shank. Ordering-wise, the #1 is model 665 and the #2 is model 666.
How fast can I get the Klein Tools 665 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
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 665 come with a warranty?
Absolutely. The Klein Tools 665 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Klein Tools 665?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Klein Tools 665 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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