Klein Tools 646M Magnetic Nut Driver Set 2-Piece
- Head Style: Box End
- Material Type: Blend
- Item Weight: 0.42 pounds
- Manufacturer Warranty Description: 1 year manufacturer
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A standard length Klein screwdriver with a 6 inch blade capacity, suited to everyday trade use rather than tight or confined spaces.
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ASIN: B000936QV0Model: 646MCategory: Screwdrivers
Overview
A Klein Tools 646M screwdriver measuring 9.75 inches overall with a 6 inch blade capacity, weighing 0.42 pounds, sized for full reach into recessed screws on the job.
Klein Tools is a known name in hand tools, and the length and capacity figures here point to a full size screwdriver rather than a compact or precision driver.
- 9.75 inches overall length
- 6 inch blade capacity
- 0.42 pounds
- Klein Tools brand
Who it's for
Fits an electrician or general tradesperson who wants a full length, standard Klein screwdriver for everyday use. Not the right pick for someone who needs a stubby or precision driver, given the 9.75 inch overall length.
Pros and cons
- Full 9.75 inch length reaches recessed screws
- Lightweight at 0.42 pounds for repeated use
- Not suited to tight or confined spaces
- Tip type and size not specified in the listing
Performance notes
The 6 inch blade capacity gives reach into recessed screws that a shorter driver cannot manage, while the 0.42 pound weight keeps it light enough for repeated use over a shift.
Specifications
| Brand | KLEIN |
|---|---|
| Model | 646M |
| Dimensions & fit | |
| Item Weight | 0.42 poundshigher than 54% of 112 screwdrivers |
| Item Length | 9.7 inches |
| Wrench Length Style | standard |
| Capacity & performance | |
| Jaw Capacity | 6 inches |
| Construction & materials | |
| Material Type | Blend |
| Color | Black |
| Finish Types | Brushed |
| Included components | |
| Unit Count | 1 |
| Included Components | 646-1/4M And 646-5/16M |
| Package Quantity | 1 |
| Warranty & support | |
| Manufacturer Warranty Description | 1 year manufacturer |
| Other details | |
| Head Style | Box End |
| Point Count | 6 |
| Is Non Sparking | Yes |
| Is Racheting | Yes |
| Item Type Name | Klein Tools 646M Tool Set, Magnetic Nut Drivers Sizes 1/4 And 5/16-Inch, 6-Inch Shafts, 2-Piece |
| Set Name | 2-Piece |
| Operation Mode | Mechanical |
| End Style | hang hole |
| Measurement Standard | SAE (Inch) |
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Frequently asked questions
How long is the Klein 646M screwdriver?
9.75 inches overall, with a 6 inch blade capacity.
How much does the Klein 646M weigh?
0.42 pounds.