Rack-A-Tiers 70160G 70 Series ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$6.40
Rack-A-Tiers 70160G 70 Series #1 Square Robertson Screwdriver Bit, 6-Inch

Rack-A-Tiers 70160G 70 Series #1 Square Robertson Screwdriver Bit, 6-Inch

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Model: 70340BK

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

$6.40
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Rack-A-Tiers 70160G 70 Series #1 Square Robertson Screwdriver Bit, 6-Inch Hex Shank

The Rack-A-Tiers 70160G is a #1 Square (Robertson®) screwdriver bit measuring 6-Inch in length, part of the Rack-A-Tiers 70 Series driver bit lineup built for electricians and installers who need dependable fastening tools on the jobsite. The 70 Series is available across two model options — 70160G and 70340BK — so contractors can match the right tip and length to the fastener and reach required for a given task. The Robertson® square-drive tip on the 70160G is engineered to seat securely into matching square-recess fasteners, reducing cam-out and slippage compared to standard slotted or Phillips bits. Its 6-Inch length provides extended reach for recessed screws, deep panel work, and applications where a shorter bit can't reach the fastener head. This bit is designed for use with standard 1/4-Inch hex-drive drivers, impact drivers, and drills equipped with a compatible bit holder, making it a versatile addition to any electrician's or tradesperson's bit set.

Key Features

  • Tip Size: #1 Square (Robertson®) drive for a secure, low-cam-out fit in matching square-recess fasteners.
  • Length: 6-Inch overall length for extended reach into recessed or deep-set screw locations.
  • 70 Series Design: Part of the Rack-A-Tiers 70 Series bit lineup, offered as 70160G and 70340BG. model options and engineered for consistent fit and durability across repeated use.
  • Universal Compatibility: Fits standard 1/4-Inch hex bit holders on drills, impact drivers, and manual screwdriver handles.
  • Jobsite-Ready: Compact profile makes it easy to carry in a tool pouch or bit case for quick access on electrical and construction jobs.

Technical Specifications

  • Tip Type: #1 Square (Robertson®)
  • Length: 6-Inch
  • Series: 70 Series
  • Shank: 1/4-Inch Hex Drive
  • Model Options: 70160G, 70340BK

Typical Applications

  • Electrical Panel and Device Installation
  • Residential and Commercial Wiring Projects
  • Fastening Square-Recess (Robertson®) Screws
  • Deep-Recess or Hard-to-Reach Fastener Applications
  • General Electrical Contractor Toolkits

Why Rack-A-Tiers?

Rack-A-Tiers builds the 70 Series bit lineup for electrical professionals who need dependable, precisely sized driver bits that hold up to daily jobsite use. The #1 Square Robertson® tip and 6-Inch length of the 70160G, alongside the 70340BK option in the same series, are purpose-built to deliver a secure fit and extended reach, helping installers work faster and reduce stripped or damaged fasteners on the job. Choosing a 1/4-Inch hex-shank bit from the Rack-A-Tiers 70 Series means consistent compatibility across drills, impact drivers, and manual handles already on the truck.

Manufacturer Resources

Product Specs

list_batch:
RAC-20260924
Product Type:
Screwdriver Bit
Configuration:
#1 Square (Robertson®)
Series:
70 Series
Connection Type:
1/4-Inch Hex Shank
Department:
Electrical
Product Subgroup:
Screwdrivers & Drivers
Product Group:
Hand Tools

Rack-A-Tiers 70340BK – Frequently Asked Questions

1) Will the Rack-A-Tiers 70 Series square drive bits fit my impact driver?
Both 70 Series bits use a 1/4-inch hex shank, so they drop into any standard 1/4-inch hex bit holder, quick-change chuck on an impact driver, or a manual bit-driver handle. No adapter needed.
2) What square drive sizes and lengths does the Rack-A-Tiers 70 Series bit come in?
Two choices: the 70160G is a #1 square x 6 inch, and the 70340BK is a #3 square x 4 inch. So you pick by both tip size and reach, not independently.
3) I'm driving Robertson screws in a deep panel box, which Rack-A-Tiers bit should I grab?
The 6-inch 70160G is the one for depth. Its length reaches recessed and deep-set screw heads a short bit can't get to, which is the usual problem when you're working at the back of a panel can. Just confirm your screws take a #1 square recess, since the 6-inch option is only offered in #1. If they're a larger #3 square, you're on the 70340BK at 4 inches.
4) Will a #1 square bit work on my #2 Robertson screws?
No. Square drive sizing is not interchangeable; a #1 tip in a #2 recess sits loose and will round the recess out. The 70 Series covers #1 (on the 6-inch 70160G) and #3 (on the 4-inch 70340BK), so match the number stamped on your fastener or spec'd on the device screws.
5) What is the difference between the Rack-A-Tiers 70160G square bit and the Klein Tools 32960A Fastbit replacement bit?
They solve different problems. The Rack-A-Tiers 70160G is a #1 Square (Robertson) screwdriver bit with a 1/4-inch hex shank, so it drops into any drill, impact driver, or manual bit holder that takes a standard 1/4-inch hex bit. The Klein Tools 32960A is a Fastbit Tru-Grip replacement side screwdriver bit, meant as a replacement piece for the Klein Fastbit Tru-Grip driver rather than a loose hex-shank bit for general drill and impact use. If you are stocking bits for panel and device work across whatever drivers are on the truck, the 70160G is the hex-shank option; if you are restoring a Fastbit Tru-Grip handle to service, the 32960A is the part that fits it.
6) Why use a square Robertson bit instead of a Phillips on electrical device screws?
A square recess holds the bit flat and square in the socket, so it resists cam-out and slipping far better than a slotted or Phillips tip. That matters when you are driving device and panel screws one-handed in a box, where a slipped bit means a scratched device plate or a stripped head. Much of the hardware on Canadian-market panels and devices is square recess to begin with.
7) I need a shorter square bit for tight panel work instead of the 6-inch 70160G. What else is in the 70 Series?
The 70 Series covers two square-drive options: the 70160G in #1 Square at 6 inches for reaching deep-set and recessed fasteners, and the 70340BK in #3 Square at 4 inches when clearance is tight and the fastener takes a larger square recess. Both share the 1/4-inch hex shank, so either one runs in the same drivers and holders. Note that the shorter option is also a different tip size, so confirm the fastener recess is #3 before swapping on length alone.
8) Can I use these Rack-A-Tiers square bits with a hand screwdriver handle instead of a drill?
Yes. Because the shank is standard 1/4-inch hex, the same bit goes into a manual bit-driver handle, a drill chuck, or an impact driver. That's useful for final seating on device screws where you want feel rather than torque.
How fast can I get the Rack-A-Tiers 70340BK 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 Rack-A-Tiers 70340BK come with a warranty?
Absolutely. The Rack-A-Tiers 70340BK 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 Rack-A-Tiers 70340BK?
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 Rack-A-Tiers 70340BK from ZenSupply?
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