Hakko 5B-SA Knife
- Knife
- 0 ounces
Almost certainly a small replacement blade rather than a full knife, given its 0.01 ounce weight, so confirm what it fits before ordering.
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How it ranks among the 246 knifes we track
4.5★ across 117 Amazon ratings, Bayesian-smoothed toward the category average.
117 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Modest tracked demand last month.
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 246 knifes we track - how the scorecard works · full knifes 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 Hakko 5B-SA is listed in Amazon's Tools > Knifes category, but at 0.01 ounces it's far too light to be a handled knife, more likely a small replacement blade or insert. It carries a 4.5 star average from 117 ratings, with no purchases recorded in the past month.
A weight of 0.01 ounces is essentially negligible, the kind of figure attached to a single small blade rather than a complete tool with a handle. That makes the category label worth questioning here, since this reads more plausibly as a spare or replacement cutting piece meant to fit into another tool. No description or additional specs are provided to confirm what it's designed to fit.
- Model number 5B-SA from Hakko
- Weighs 0.01 ounces
- Listed in Tools > Knifes category
- 4.5 star average from 117 ratings
Who it's for
Best suited to someone already using a compatible Hakko tool and looking for the 5B-SA replacement blade by model number. Not useful for anyone shopping for a standalone handled knife, since the weight here doesn't support that.
Strengths and trade-offs
Drawn from this product's published specifications.
- 4.5 star average across 117 ratings
- No compatibility information confirming which tool it fits
- Too light to be a standalone handled knife
- No purchases recorded in the past month
Performance notes
There's no compatibility data listed to confirm which tool the 5B-SA fits, which matters given how it reads as a spare part rather than a complete implement. The 4.5 star average across 117 ratings suggests buyers who ordered the correct part were satisfied, but the listing doesn't document what it's rated to cut or how long it holds an edge.
Specifications
| Brand | Hakko |
|---|---|
| Model | 5B-SA |
| Item Weight | 0 ounces |
Other Hakko knifes
How it compares
This product against the closest alternatives we track in knifes.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Hakko 5B-SA KnifeThis product | 4.5 / 5 | 117 | 3.5 / 5 |
| WORKPRO W013053AU KnifeWORKPRO | 4.8 / 5 | 9,700 | 4.7 / 5 |
| Victorinox 0.6223.G KnifeVictorinox | 4.8 / 5 | 9,400 | 4.7 / 5 |
| LEATHERMAN 831426 KnifeLEATHERMAN | 4.8 / 5 | 9,800 | 4.6 / 5 |
| Gerber 31-000345 KnifeGerber | 4.7 / 5 | 16,300 | 4.6 / 5 |
Similar knifes from other brands
Questions about the Hakko 5B-SA
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Is the Hakko 5B-SA a full handled knife?
At 0.01 ounces it's too light to be a complete handled knife, more likely a small replacement blade or insert.
What is the Hakko 5B-SA rated?
4.5 stars across 117 ratings.