KLEIN

Klein 647M Screwdriver

Screwdriver
1
1.5 pounds

4.8/ 5 on Amazon1,081Amazon ratings100+bought last month4.2ProductDome score

Better rated than 77%

Medium confidenceLast refreshed Aug 4, 2026Amazon data + ProductDome analysis · methodology

Best forYou want one heavy duty Klein screwdriver rather than a boxed set

A single, full weight Klein driver for buyers who already know which tip they need. Reasonable pick if you trust Klein's build quality.

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ProductDome scorecard

How it ranks among the 158 screwdrivers we track

4.2/ 5ProductDome scoreMedium confidence

Owner satisfaction · 56% of scorecategory median 4.7★4.8

4.8★ across 1,081 Amazon ratings, Bayesian-smoothed toward the category average.

Evidence strength · 17% of scorecategory median 1,304 ratings3.8

1,081 Amazon ratings, weighted on a log scale so huge counts don't drown everything.

Buyer demand · 11% of score2.7

100+ bought on Amazon last month.

Data quality · 11% of score2.5

Brand identity, imagery, description and spec coverage.

The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 158 screwdrivers we track - how the scorecard works · full screwdrivers data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.

Overview

The Klein 647M is a single screwdriver from Klein Tools, weighing 24 ounces on its own. That weight points to a full size shaft and handle built for repeated use rather than a compact pocket driver.

The listing does not specify tip type, blade length, or handle style for the 647M, so this profile relies on the confirmed weight and single piece count. Confirm the tip type directly with the listing images if that detail matters for your job.

Klein Tools brand
24 ounce weight
Single piece screwdriver
Model 647M

Who it's for

Fits tradespeople who want one substantial Klein screwdriver for daily carry rather than a boxed set. Less useful for anyone who needs a specific tip size confirmed before ordering, since that isn't listed here.

Strengths and trade-offs

Drawn from this product's published specifications.

What stands out

Full size, heavy duty build
Klein Tools brand reliability

What to check first

Tip type not specified in the listing
Sold as a single piece, not a set

Performance notes

At 24 ounces for a single driver, the 647M carries more heft in the handle and shaft than a compact driver, which in general use typically means more leverage and less hand fatigue during repeated turns.

Specifications

Brand	KLEIN
Model	647M
Pieces	1
Item Weight	1.5 pounds

How it compares

This product against the closest alternatives we track in screwdrivers.

Product	Amazon rating	Ratings	ProductDome score
Klein 647M ScrewdriverThis product	4.8 / 5	1,081	4.2 / 5
JOREST 40Pcs Small Precision Screwdriver Set with Torx Triwing PhillipsJOREST	4.7 / 5	25,021	4.6 / 5
Amartisan wwer ScrewdriverAmartisan	4.6 / 5	12,513	4.6 / 5
AXTH 25-IN-1 ScrewdriverAXTH	4.6 / 5	4,763	4.5 / 5
VESSEL 220W-3 ScrewdriverVESSEL	4.7 / 5	6,242	4.5 / 5

Frequently asked

Questions about the KLEIN 647M

Common buyer questions answered straight from the product spec data - no fluff, no "it depends".

How heavy is the Klein 647M?

It weighs 24 ounces, heavier than a compact pocket driver.

Does the Klein 647M come as a set?

No, it is sold as a single screwdriver.