Best Screws, Nuts, and Bolts Assortments for Home and Workshop Repairs
The best screws, nuts, and bolts assortment depends on the fastener style, metric sizes, and quantity a project requires. The 1,713-piece hex socket kit is best for machinery repairs needing multiple lengths; the stainless Phillips set suits small DIY and 3D-printing projects; and the 1,080-piece kit offers a broad selection of round-head metric hardware. Smaller kits provide a more compact option for routine household repairs.
| Product | Best For | Notable Details |
|---|---|---|
| Hex Socket Metric Assortment | Machinery repairs | 1,713 pieces; M2, M3, and M4 |
| Stainless Phillips Pan Head Set | Small DIY projects | 970 pieces; M2 through M5 |
| wugongshan Assortment | General metric repairs | 1,080 pieces; M3 through M6 |
| 121-Piece Assortment | Basic home maintenance | M4, M5, and M6 with case |
| smseace 680-Piece Kit | Furniture and vehicle repairs | 27 sizes; carbon steel |
Hex Socket Metric Bolt Assortment
This 1,713-piece assortment covers M2, M3, and M4 metric fasteners in 21 sizes, with listed lengths from 4 mm to 30 mm. The product name specifies 12.9 alloy steel, zinc plating, screws, nuts, washers, and hex bits.
Best for: Buyers repairing machinery or maintaining projects that use small metric hex socket fasteners. Its range of lengths and included hardware make it a useful choice when a repair may call for several combinations.
Limitation: This set covers only M2, M3, and M4 sizes, so it is not the right choice if a project requires larger metric bolts or imperial hardware.
Stainless Phillips Pan Head Screw Set
This 970-piece kit includes Phillips pan head machine screws in M2, M2.5, M3, M4, and M5 sizes. It is described as 304 stainless steel and includes nuts and fixed washers.
Best for: Small DIY assemblies and 3D-printer projects that use these metric sizes and Phillips-drive fasteners. Choose it if stainless steel and an included washer arrangement are priorities.
Limitation: The listed information does not specify the screw lengths or the number of pieces in each size. Confirm the required dimensions before choosing it for a particular repair.
wugongshan 1,080-Piece Metric Assortment
This assortment includes M3, M4, M5, and M6 cross-slotted round-head machine screws, nuts, and flat washers. The listed features describe smooth, clean threads and a separate-compartment plastic storage box. The product material is described as offering corrosion, rust, and oxidation resistance.
Best for: General-purpose metric repairs when a buyer needs several common sizes and organized storage. It is a better size range than the smaller M2-to-M4 kit for projects that call for M5 or M6 hardware.
Limitation: These are cross-slotted round-head fasteners, not hex socket bolts. Choose a different kit if the project requires a specific drive or head style.
121-Piece Nuts And Bolts Kit
This compact assortment includes M4, M5, and M6 Phillips-head machine screws, matching hex nuts, and flat washers. Its clear case has separate compartments. The product listing describes the finish as providing basic rust and corrosion protection in normal use.
Best for: Homeowners and DIYers who want a smaller, organized supply for everyday repairs rather than a large mixed assortment. Listed uses include appliances, lamps, toys, woodworking, and general home or garage tasks.
Limitation: At 121 pieces, it contains fewer fasteners than the larger kits and covers only three sizes. It may not suit frequent repairs requiring a wide selection.
smseace 680-Piece Nuts And Bolts Kit
This 680-piece assortment lists 27 sizes across M3, M4, M5, and M6 hardware. Its contents include 13 screw sizes, four nut sizes, four flat-washer sizes, and four lock-washer sizes. The listing identifies carbon steel construction and describes the threads as smooth and precisely rolled.
Best for: Buyers looking for a varied kit for machinery, furniture, automotive, or motorcycle repairs. The included lock washers distinguish it from kits that list flat washers only.
Limitation: The listed material is carbon steel, and the product details do not specify a coating. Check whether the material and finish suit the project’s exposure conditions.
Buying Guide: How To Choose Screws, Nuts, And Bolts
Which size and measurement system do you need?
Start with the fastener already in the assembly, the equipment manual, or the project drawing. These five assortments list metric sizes, including M2 through M6. Match both the diameter and the length; a bolt with the correct diameter may still be too short or too long. Do not assume a metric assortment will replace an imperial fastener.
Which head and drive style will fit?
Match the screw head and drive to the tool and clearance available. The hex socket assortment suits projects designed for hex-drive fasteners. The other listed screw kits use Phillips or cross-slotted heads. Round or pan heads may sit differently from other styles, so compare the replacement with the original hardware.
Do you need nuts, washers, or lock washers?
A screw-only assortment may not supply the matching hardware for a through-hole connection. Check whether a kit includes nuts and flat washers, and whether lock washers are needed for the application. The smseace kit specifically lists both flat and lock washers; the wugongshan and 121-piece sets list flat washers.
Which material is appropriate?
Compare the stated material and finish with the setting. One kit lists 304 stainless steel, another specifies 12.9 alloy steel with zinc plating, and the smseace kit lists carbon steel. Product descriptions vary, so verify suitability for the actual environment and load rather than relying on a general claim of corrosion resistance.
How much variety should the kit provide?
Large assortments can help when repairs require many sizes, but a compact set may be easier to keep organized for occasional household fixes. Compare the total piece count, size range, included hardware, and storage case details. If the listing does not state individual lengths or quantities by size, confirm those details before buying.
Frequently Asked Questions
Are these assortments metric or imperial?
The listed kits are metric. Their sizes are identified with M designations, such as M3 and M6.
Which kit includes stainless steel screws?
The 970-piece Phillips pan head assortment is described as 304 stainless steel and includes nuts and fixed washers.
Which assortment has lock washers?
The smseace 680-piece kit lists four sizes of lock washers, along with flat washers, nuts, and screws.
Can one assortment cover every repair?
No. Each kit covers selected sizes and fastener styles. Check the required thread size, length, head, drive, and material before using an assortment for a repair.
Why does an assortment include nuts and washers?
Nuts can secure bolts in through-hole applications, while washers sit between fasteners and the joined surface. Use hardware that matches the fastener and the requirements of the assembly.