The best stainless steel bolts and nuts kit depends on the sizes and hardware you need: the 248-piece 304 stainless steel set suits projects using M6, M8, and M10 fasteners, while the 182-piece M6 kit is a focused choice with several bolt lengths and matching washers. For nuts only, the Bates set covers seven metric sizes. The Taiss kit offers many sizes and head styles, but its listed fasteners are black zinc plated, not stainless steel.
| Product | Best for | Material or size range |
|---|---|---|
| 248-piece assortment | Broader bolt-and-washer selection | 304 stainless steel; M6–M10 |
| 182-piece M6 kit | M6 repairs | A2-70 stainless steel; M6 |
| Bates hex nuts | Metric nuts in several sizes | Stainless steel; M3–M12 |
| 116-piece assortment | Smaller mixed-size selection | 304 stainless steel; M6–M10 |
| Taiss assortment | Many sizes and head styles | Black zinc plated; M2–M10 |
248-Piece 304 Stainless Steel Bolt Set
This set is best for buyers who need bolts, nuts, flat washers, and lock washers in several common metric sizes. The listed contents cover M6, M8, and M10, with bolt lengths from 12 mm to 60 mm. Its 304 stainless steel construction is described as moisture-, oxidation-, and corrosion-resistant, making it a relevant option for indoor and outdoor fastening tasks.
Choose this kit for a broader selection than a single-size M6 set. The listed quantities vary by size, so check the contents against your project before ordering. It does not cover smaller M2–M5 sizes.
182-Piece A2-70 M6 Fastener Kit
This kit is best for repairs that use M6 hardware. It includes bolts in lengths from 8 mm to 35 mm, along with matching nuts, flat washers, and lock washers. The product identifies the material as A2-70 stainless steel and describes the kit as suitable for indoor and outdoor use.
Choose it if you want a dedicated M6 assortment rather than multiple bolt diameters. Its main limitation is its narrow size range: it does not provide M8 or M10 bolts, so it is less useful for projects that require mixed diameters.
Bates Seven-Size Metric Hex Nut Kit
The Bates kit is best for buyers who need replacement metric hex nuts rather than a complete bolt set. Its 130 pieces span M3, M4, M5, M6, M8, M10, and M12. The product describes the nuts as stainless steel and highlights corrosion resistance for automotive, machinery, and household applications.
This is a useful choice when you already have compatible bolts and need nuts across several diameters. It does not include bolts or washers, so avoid it if you need a complete fastening kit in one purchase.
116-Piece 304 Stainless Steel Assortment
This product is best for shoppers considering a smaller assortment of 304 stainless steel bolts, nuts, and washers. Listed bolt sizes include M6 lengths of 20 mm, 25 mm, and 40 mm, plus an M10 length of 60 mm. The description also lists M6, M8, and M10 nuts, flat washers, and lock washers.
Check the listing carefully before buying: the product name says 116 pieces, while its feature text says 248 pieces. That inconsistency makes the exact total unclear. The listed bolt lengths are also more limited than those in the 248-piece set.
Taiss 3160-Piece Metric Assortment
This kit is best for buyers who prioritize a large selection of metric sizes and head styles. It lists M2–M10 fasteners, including flange bolts, socket button-head screws, and cap-head screws, stored in labeled compartments. The description gives 3,160 pieces and 42 sizes.
Important limitation: This is not a stainless steel set. The title describes the fasteners as black zinc plated, and the features do not identify them as stainless steel. Choose it only if the finish and material meet your project requirements; avoid it when stainless steel is essential.
Buying Guide: How To Choose Stainless Steel Bolts And Nuts
Which sizes and lengths do you need?
Match the bolt diameter, length, and thread specification to the parts being joined. M6, M8, and M10 are covered by the mixed-size stainless steel assortments here, while the Bates kit adds nuts from M3 through M12. A size assortment is convenient, but it is not a substitute for confirming the exact fastener measurements your project requires.
Do you need bolts, nuts, and washers together?
For a complete kit, compare the listed bolt lengths and check whether matching nuts, flat washers, and lock washers are included. The Bates product contains nuts only. The 182-piece kit focuses on M6; the 248-piece kit includes M6, M8, and M10 hardware. Check individual contents, not just the headline piece count.
Does the material matter for your application?
These listings describe the 248-piece and smaller mixed-size kits as 304 stainless steel, and the dedicated M6 kit as A2-70 stainless steel. Bates describes its nuts as stainless steel without specifying a grade in the supplied features. The Taiss listing specifies black zinc plating, so it should not be treated as a stainless steel alternative.
How should you compare assortment counts?
Count alone does not show how useful a kit will be. Review the number of pieces per size and the included lengths. Also verify the product details when title and feature information conflict, as they do for the stated count of the 116-piece assortment.
Frequently Asked Questions
What sizes are included in the Bates stainless steel nut kit?
The Bates kit lists M3, M4, M5, M6, M8, M10, and M12 hex nuts.
Which listed kit includes M6, M8, and M10 bolts?
The 248-piece 304 stainless steel assortment lists bolts, nuts, and washers in M6, M8, and M10.
Is the Taiss assortment made of stainless steel?
No. Its listing describes the fasteners as black zinc plated, not stainless steel.
Does the 182-piece kit include multiple bolt lengths?
Yes. It lists M6 bolts from 8 mm through 35 mm, plus matching nuts and washers.