Teng Tools 3-4 mm Flat Slotted Screwdriver Bit - 1/4 Inch Hex Shank, 89 mm (3.5 in) Overall Length, Individual Replacement Bit
Bits · FL8908A01
3-4 mm Flat Slotted Screwdriver Bit
1/4 Inch Hex Shank, 89 mm (3.5 in) Overall Length, Individual Replacement Bit
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- Genuine Teng Tools — professional-grade, designed in Sweden
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- Backed by guarantee — built to last a working lifetime
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Why this one
89 mm reach
The 89 mm (3.5 in) overall length reaches recessed terminals, panel screws and cover-plate fasteners.
Two slotted sizes
Choose 3.0 x 0.5 mm or 4.0 x 0.8 mm. Sold individually, so you replace only the bit you've lost or worn.
1/4 inch hex shank
The 1/4 inch hex shank seats in cordless drills, impact drivers and manual bit handles, including quick-change chucks and spring-loaded holders.
Read the full description
When you need one flat head bit in exactly the right width, this Teng Tools 4 mm slotted bit delivers. The tip measures 4 mm across and the overall length is 89 mm (3.5 in), giving you enough reach for recessed terminals, panel screws, and cover-plate fasteners without the wobble that comes from an oversized bit.
The 1/4 inch hex shank is the universal standard across cordless drills, impact drivers, and manual bit handles. It seats securely in quick-change chucks and spring-loaded holders alike, so there is no fumbling when you swap between tasks on a live job.
Sold as a single bit, not a set. That means you replace only what you have lost or worn down, keeping your kit lean and your spending deliberate. For the professional electrician, HVAC technician, or general maintenance worker, that efficiency adds up over hundreds of service calls a year.
Teng Tools designs every accessory to meet the expectations of full-time tradespeople. Dimensional accuracy matters when a sloppy fit chews up a brass terminal screw or mars a finished faceplate. Trust the marked specification, install with confidence, and move on to the next task.
Get it in a set
This bits also comes in these 3 sets, with the tools that go with it.
Specifications
| Type | Bits |
|---|---|
| Category | Bits |
| Drive size | 1/4" |
| Part number | FL8908A01 |
Data sheet
Full details from Teng Tools. Download PDF
Lifetime warranty
Send a photo and your order number. Same-day shipping on replacements.
Ships from Texas
From our Fort Worth warehouse.
Questions?
Call (817) 767-3392.
Shipping
Free shipping on orders over $99. Orders are stocked, picked and shipped from our warehouse in Fort Worth, Texas — orders placed on business days ship same-day wherever possible.
Lifetime warranty
Teng Tools hand tools are backed by a lifetime warranty against manufacturing defects. Screwdriver bits and socket bits are consumables and are guaranteed to meet dimensional standards. Torque wrenches and air tools can be serviced and recalibrated on request — contact us to arrange it.
Returns
Not right for the job? Contact us within 30 days of delivery and we'll sort out a return or exchange. Tools must be unused and in their original packaging. Warranty claims are handled separately — a defective tool is our problem, not yours.
Why Teng Tools?
Swedish Design Since 1985
Trusted in 30+ countries. Designed in Sweden, built to ISO and DIN standards.
Shipped Fast from Texas
US warehouse in Fort Worth, so orders move fast. TAA approved for government and defense.
Lifetime Warranty
Something goes wrong? Send a photo and your order number — same-day shipping on replacements.
The Devil Is in the Detail
Satin-finish wrenches, through-blade screwdrivers, heavy-gauge storage — built to last.