Rack-A-Tiers 70140G #1 Square ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$5.85
Rack-A-Tiers 70140G #1 Square Bit 4-Inch Robertson® Insert Bit

Rack-A-Tiers 70140G #1 Square Bit 4-Inch Robertson® Insert Bit

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Model: 70240R
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$5.85
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Rack-A-Tiers 70140G #1 Square Bit 4-Inch Robertson® Insert Bit

The Rack-A-Tiers 70140G is a #1 square Robertson® insert bit measuring 4-inch in length, built for electricians and installers who need a reliable driver bit for fast, repeatable fastening on the job. Sized to fit standard #1 square-recess (Robertson®) fasteners commonly found in electrical, low-voltage, and general construction applications, this 4-inch bit slips into standard 1/4-inch hex bit holders and quick-change drivers for fast swap-out during panel work, box installs, and rough-in tasks. This insert bit is offered in two color options – Green and Red – so crews can color-code bit sets for quick identification in the field; both colors share the same #1 square Robertson® tip, 4-inch length, and insert-bit format. Rack-A-Tiers builds its tool and accessory line for professional electricians, and this insert bit is sized and profiled to match that everyday use case.

Key Features

  • Bit Size: #1 square (Robertson®) tip for a secure, slip-resistant engagement with #1 square-recess fasteners.
  • Length: 4-Inch overall length for reach into recessed screws and tight mounting locations.
  • Robertson® Profile: Square-drive geometry helps reduce cam-out compared to slotted or Phillips profiles, supporting consistent torque transfer.
  • Insert Bit Format: Sized to fit standard 1/4-inch hex bit holders and quick-change drivers commonly used by electricians in the field.
  • Color Options: Available in Green or Red for easy visual sorting and bit-set organization on the truck or in the pouch.
  • Job-Ready Durability: Built by Rack-A-Tiers for the demands of daily electrical and construction fastening tasks.

Technical Specifications

  • Bit Type: #1 Square (Robertson®)
  • Length: 4-Inch
  • Color Options: Green, Red
  • Brand: Rack-A-Tiers

Typical Applications

  • Electrical Panel and Box Installation
  • Device and Wallplate Fastening
  • General Electrical Rough-In and Trim-Out Work
  • Low-Voltage and Commercial Construction Fastening
  • Driver and Bit Holder Kits for Field Technicians

Why Rack-A-Tiers?

Rack-A-Tiers designs tools and accessories specifically with the working electrician in mind, and the 70140G #1 square Robertson® bit continues that focus with a driver bit sized and profiled for dependable, everyday fastening performance, available in Green or Red so crews can keep bit sets organized. Choosing a purpose-built insert bit like this one helps keep panel, box, and device installs moving efficiently without stripped screws or slipped bits. Shop Rack-A-Tiers tools and accessories at ZenSupply for more field-ready gear built for professional electrical work.

Manufacturer Resources

Product Specs

list_batch:
RAC-20260924
Product Type:
Driver Bit
Configuration:
#1 Square (Robertson) Drive
Department:
Electrical
Product Subgroup:
Drill & Driver Bits
Product Group:
Power Tools & Accessories

Rack-A-Tiers 70240R – Frequently Asked Questions

1) Will the Rack-A-Tiers 70140G square bit fit a standard 1/4 inch hex quick-change drill chuck or bit holder?
Yes. The 70140G is an insert bit sized for standard 1/4 inch hex bit holders and quick-change drivers, so it drops into the magnetic holders and impact driver chucks most electricians already carry. No adapter needed.
2) Is a #1 square Robertson bit the right size for the screws in an electrical panel and device boxes?
It depends on the screw recess. The 70140G drives #1 square-recess (Robertson) fasteners, which is the smaller of the common square sizes and is typical of device and low-voltage screws. Many panel and box screws take a #2 square recess instead, so check the recess size before you commit. A #1 bit in a #2 screw will rattle and chew the recess.
3) What is the difference between the Rack-A-Tiers 70140G square bit and the Milwaukee SHOCKWAVE square recess power bit?
Both drive square-recess (Robertson) fasteners, but they differ in length and drive style. The Rack-A-Tiers 70140G is a #1 square Robertson insert bit with a 4-inch overall length, sized to drop into standard 1/4-inch hex bit holders and quick-change drivers. The Milwaukee SHOCKWAVE Impact Duty square recess bit is a 2-inch power bit from the SHOCKWAVE line. If you are reaching down into a recessed screw inside a panel or deep box, the 4-inch Rack-A-Tiers bit gives the extra reach; for short-shank driving right at the surface the 2-inch Milwaukee is the more compact choice.
4) Can I use a Phillips #2 power bit instead of the Rack-A-Tiers 70140G?
No - they are not interchangeable drive types. The Rack-A-Tiers 70140G has a #1 square (Robertson) tip, which engages square-recess fasteners only. A Milwaukee 48-32-4802 SHOCKWAVE Impact Duty Phillips #2 power bit, 6 inches long, drives cross-recess Phillips screws. Putting a Phillips tip in a square recess will not seat and will chew the screw head. Match the bit profile to the fastener recess: square-recess terminal and device screws take the 70140G, Phillips screws take the 48-32-4802.
5) What is the difference between the green and red Rack-A-Tiers 70140 square bits?
Color only. Green is part number 70140G and red is 70240R. Both are the same #1 square Robertson tip in the same 4 inch insert-bit length. Crews buy both so they can color-code bit sets or separate sizes in the pouch at a glance.
6) Why use a 4 inch square bit instead of a short 1 or 2 inch insert bit?
Reach. The 4 inch overall length gets the tip down to screws that sit recessed, down inside a panel gutter, or in a tight mounting pocket where a short bit plus holder will not clear. For flush, open fastening a shorter bit is steadier. Compare with something like the Milwaukee SHOCKWAVE Impact Duty 2 inch square recess power bit if you want the shorter format.
7) Will a square Robertson bit cam out less than a Phillips bit on panel screws?
That is the point of the square drive. The straight-walled square recess holds the bit in the screw and transfers torque without the taper that makes a Phillips or slotted tip climb out under load. If the screws you are driving are Phillips, a square bit will not engage at all and you need a Phillips bit such as the Milwaukee 48-32-4802 SHOCKWAVE #2 Phillips power bit instead.
8) I need extra reach for driving screws deep in a panel - which bit is longest?
Of the square and Phillips bits in play, the Milwaukee 48-32-4802 SHOCKWAVE Impact Duty bit is 6 inches long but carries a Phillips #2 tip. For square-recess fasteners the Rack-A-Tiers 70140G gives 4 inches of overall length, which is double the 2-inch Milwaukee SHOCKWAVE square recess bit. So if the deep screw is square-drive, the 70140G is the reach option; if it is Phillips, the 6-inch 48-32-4802 reaches further.
9) Is the Rack-A-Tiers 70140G rated for impact drivers like the Milwaukee SHOCKWAVE bits?
The Milwaukee 48-32-4802 and the 2-inch Milwaukee square recess bit are both part of the SHOCKWAVE Impact Duty series, which is Milwaukee's impact-rated bit line. The Rack-A-Tiers 70140G is described as a #1 square Robertson insert bit built for everyday electrical fastening and sized for standard 1/4-inch hex bit holders and quick-change drivers. If your crew is running high-torque impact drivers all day, the SHOCKWAVE Impact Duty bits are the line specifically designated for that duty; for drill-driver and hand-driver panel, box, and device work the 70140G is the purpose-built square-drive choice, and it comes in Green or Red for color-coding bit sets.
10) My fasteners are #2 square, not #1 - should I still order the 70140G?
No. The Rack-A-Tiers 70140G is specifically a #1 square (Robertson) drive, and a #1 tip will rattle and cam out in a #2 square recess. For square-recess fasteners outside the #1 size, the Milwaukee SHOCKWAVE square recess power bit is the other square-drive option, in a 2-inch power bit format. Confirm the recess number stamped on the screw or gauge it against a known bit before ordering, since #1 and #2 square recesses look similar at a glance.
11) Is the Rack-A-Tiers 70140G meant for rough-in and trim-out, or just bench work?
Field work. Rack-A-Tiers built this bit for working electricians, and the stated uses are panel and box installation, device and wallplate fastening, general rough-in and trim-out, and low-voltage and commercial construction fastening. It is also a common fill item in field techs' driver and bit holder kits.
How fast can I get the Rack-A-Tiers 70240R 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 70240R come with a warranty?
Absolutely. The Rack-A-Tiers 70240R 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 70240R?
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
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