Advertising Disclosure

Best screw bolt assortment sets - July 2026

Last Updated - July 22, 2026

1
Best Choice

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Fgruh

Fgruh 2300PCS M3 Screws with Nuts Assortment Kit, M3x4/6/8/12/16/20/25/30/35 mm Hex Socket Button & Cap Head Bolts Nut and Washers Set, 12.9 & 10.9 Grade Black Zinc Plated for DIY, 3D Printer

Fgruh

More Details
Main highlights
- 【Wide Applications】Keep a m3 machine screw variety set at hand. Whether you are working on DIY projects, bicycle repairs, or professional construction, it can meet your needs at any time, making your work more convenient and efficient.
- 【Perfect for DIY Projects】 This m3 small screws assortment kit are ideal for hobbyists working with 3D printing, electronics, RC models, RC car enthusiasts, DIY, chair replacement and CNC machinery, offering precision for intricate designs.
- 【Organized Storage Box 】- The m3 hardware kit comes in a compartmentalized case with clear labels for quick access to bolts, washers, and nuts. Keeps your workspace tidy and speeds up project progress, making every job smoother.
- 【High Quality】- These 3m screws assorted kit are crafted from high-strength 10.9 &12.9 grade alloy steel and black zinc plated, ensuring exceptional durability and load-bearing capacity. High-strength steel resists wear, corrosion, and heavy loads, perfect for any indoor/light outdoor use.
- 【Hex Socket Button & Cap Head】- The metric M3 screws set comes with 2300 pieces, including 286pcs M3-0.5 x 4mm/6mm/8mm/12mm/16mm/20mm/25mm/30mm/35mm hex socket head cap bolts. 286pcs M3-0.5 x 4mm/6mm/8mm/12mm/16mm/20mm/25mm/30mm/35mm hex socket button head bolts, 576pcs M3 nuts, 576pcs flat washers and 576pcs spring washers.Perfect size for 3D printing DIY.
2
Best Value

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Fgruh

Fgruh 2200PCS M2 M3 M4 M5 Metric Screws Assortment Kit, Hex Socket Button Head Assorted kit, Machine Screw Set with Nuts & Washers,10.9 Alloy Steel Black Zinc Plated for 3D Printing

Fgruh

More Details
Main highlights
- 【Wide Applications】Keep a set of commonly used small screw hardware kit at hand. Whether you are working on DIY projects, small projects repair, or professional construction, it can meet your needs at any time, making your work more convenient and efficient.
- 【Organized & Portable】The hex socket button head bolt assortment sets are neatly packed in a sturdy plastic storage box, ensuring easy organization and quick access. The metric machine assortment kit includes M2 M3 M4 M5 sizes for convenient use.Compact design fits in tool bags—great for pros or as a gift.
- 【High quality】– Made of durable 10.9 grade alloy steel metric bolts, nuts and washers assorted kit with oil-free black galvanizing for corrosion resistance. Smooth, burr-free surface with precise threading ensures secure fastening. Weatherproof design maintains hardness and good rust resistance for indoor/light outdoor use.Perfect for demanding applications requiring strength and reliability.
- 【Brand Guarantee】 Backed by rigorous quality control, Fgruh guarantees reliable metric screw for your projects. Enjoy peace of mind with our 24-month warranty and dedicated customer support.
- 【4 Sizes Metric Screw Assortment Kit】This 2200pcs screws set includes M2-0.4, M3-0.5, M4-0.7, M5-0.8 sizes with precise thread diameters (2mm/3mm/4mm/5mm). Lenths of the thread M2x4mm/8mm/12mm/16mm. M3x6mm/8mm/12mm/16mm. M4x8mm/12mm/16mm/20mm. M5x8mm/12mm/16mm/20mm.According with standardized metric system. And the average error is less than 0.01mm,perfect for professional and DIY projects.
3

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Kadrick

Kadrick Metric Screw Assortment, 2000PCS Metric Bolt Assortment Kit M2 M3 M4 M5 Machine Screws with Lock & Flat Washers, Grade 10.9 Alloy Steel Hex Socket Button Head Black Screws Nuts and Bolts Kit

Kadrick

More Details
Main highlights
- 【WIDE SIZE COVERAGE – MOST COMMON SIZES IN ONE KIT】 Covers the most frequently used metric sizes: M2 (4/8/12/16mm), M3 (6/8/12/16mm), M4 & M5 (8/12/16/20mm) with standard ISO/DIN threads. One complete kit eliminates repeated purchases and ensures you always have the right size on hand.
- 【SMALL PRECISION SCREWS – IDEAL FOR 3D PRINTING & DIY】 Includes M2 / M3 / M4 / M5 metric screws, specially designed for 3D printing, electronics repair, RC models, and precision DIY projects. ⚠️ These are small-size screws, NOT suitable for heavy-duty or large mechanical use. Please check sizes carefully before purchasing.
- 【MOST FREQUENTLY USED SIZES FOR 3D PRINTING & DIY】 This kit includes M2, M3, M4, and M5 — the most commonly used metric screw sizes for 3D printing, robotics, RC models, and precision DIY projects. With a balanced 1:1 ratio of screws, nuts, washers, and lock washers, it provides a complete fastening solution for a wide range of assembly needs.
- 【CLEARLY ORGANIZED BOX + SIZE LABELS + INCLUDED WRENCHES】 All parts are stored in a durable, compartmentalized case with clear, easy-to-read labels for quick identification. Includes M2–M5 hex keys (Allen wrenches), making installation faster and more convenient right out of the box.
- 【10.9 GRADE ALLOY STEEL – DURABLE & PRECISE THREADS】 Made from high-strength 10.9 grade alloy steel, featuring clean threads, excellent durability, and reliable fastening performance. Backed by Kadrick’s strict quality control and a 24-month warranty for worry-free use.
4

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Senyard

M2 M3 M4 M5 Nuts and Bolts, 304 Stainless Steel Metric Bolt Assortment (Lock & Flat Washers),Metric Screw Assortment, Socket Head Cap Screws, Metric Bolts and Nuts Assortment Kit, 1415pcs

Senyard

More Details
Main highlights
- 【Nuts and Bolts - 2-year warranty】Our products have undergone several quality checks and many tests and come with a 2-year warranty! If you need assistance, please contact us by email or Q&A. Money back or exchange. Accept Customization.Satisfaction guaranteed.
- 【Metric screws - Package】1. Screw sorting box Wrop in bubble film; 2. Then wrap into a special screw outer box; 3. Put it into the Amazon packaging box; 4. Three layers of protection, so that the exquisite products can be delivered to your hands intact.
- 【Metric Screw Assortment】If you have a set that can handle household screws. Contains 1415 pcs metric screws/bolts, nuts、lock washers and flat washers，M4*10mm and M4*20mm self tapping screws, 1 tweezer, 100 red steel paper fiber washers. Length includes: 4mm 6mm 8mm 12mm 16mm 20mm, M2 M3 M4 M5 metric bolts assortment.
- 【Metric Bolts and Nuts Kit - Wide Application】 Widely used in bicycle, furniture, car license plate, automobile, electrical connections on the power source of household and commercial appliances, and other places of indoor or outdoor.
- 【Bolts and nuts kit - High quality】Made of high quality 304 Stainless Steel, This product has passed the international stainless steel inspection. No rust，Passivated Surface，reinforced rust resistance, please feel free to use it in humid and high temperature environments.The complimentary red steel paper fiber washers provide excellent elasticity and insulation, expanding the range of applications for your fasteners.
5

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

MYWISH

Mywish 254Pcs Nuts and Bolts, 1/4 20 5/16 18 3/8 16 Bolt, Heavy Duty 304 Stainless Steel Bolts and Nuts Kit with Flat Spring Washers, Includes 10 Common Sizes, Fully Threaded

MYWISH

More Details
Main highlights
- WIDE RANGE OF APPLICATIONS - 254 pieces cost effective set. Can be widely used in different kinds of precision machinery industry, classified instruments, instruments, electronic products, household appliances, furniture repair, communication products, locks, toys, DIY projects fasteners. Metric screw assortment stainless bolts and nuts kit, nuts bolts washers assortment.
- PRODUCT NAME - 1/4-20 bolt, 5/16-18 bolt, 3/8-16 bolt, metric bolt assortment, with matching nuts and washers, various sizes and precise threads for different usage. 1/4-20 x 3/4"(10pcs), 1/4-20 x 1"(10pcs) , 1/4-20 x 1-3/4"(8pcs) , 1/4-20 x 2"(6pcs), 5/16-18 x 3/4"(8pcs) , 5/16-18 x 1"(4pcs) , 5/16-18 x 1-1/2"(4pcs) , 5/ 16-18 x 2"(4pcs) , 3/8-16 x 1-3/4"(4pcs), 3/8-16 x 2-1/2"(4pcs) Nuts and bolts stainless steel bolts and nuts kit, metric bolt assortment screw set assortment. Machine screw assortment kit m screw assortment, screw set assortment.
- PACKAGING - 254 Pieces M5 M6 M8 machine screw assortment kit, comes with sturdy and reusable transparent storage container. 2 Labels with the position and quantity. Easy to distinguish the size of the product. Please keep it away from children. Assorted screws nuts and bolts assorted bolts nuts and washers kit, hex bolts and nuts kit.
- MATERIAL - High quality 304 stainless steel material. Mywish 304 stainless steel products have been rigorously tested, higher corrosion resistance and anti-rust effect in different extreme environment. Strong solid structure and longer lifespan. Please note that the magnetic properties of 304 steel always show weak magnetic properties due to the structure transformation reasons. Nuts and bolts assortment kit stainless bolts and nuts kit, assorted nuts and bolts.
- AFTER SALE SERVICE - MYWISH team aims to provide our customers with a professional service. Please contact us if you have any issues with the products.

Best screw bolt assortment sets - July 2026

Fgruh 2300PCS M3 Screws with Nuts Assortment Kit, M3x4/6/8/12/16/20/25/30/35 mm Hex Socket Button & Cap Head Bolts Nut and Washers Set, 12.9 & 10.9 Grade Black Zinc Plated for DIY, 3D Printer

Fgruh 2200PCS M2 M3 M4 M5 Metric Screws Assortment Kit, Hex Socket Button Head Assorted kit, Machine Screw Set with Nuts & Washers,10.9 Alloy Steel Black Zinc Plated for 3D Printing

Kadrick Metric Screw Assortment, 2000PCS Metric Bolt Assortment Kit M2 M3 M4 M5 Machine Screws with Lock & Flat Washers, Grade 10.9 Alloy Steel Hex Socket Button Head Black Screws Nuts and Bolts Kit

M2 M3 M4 M5 Nuts and Bolts, 304 Stainless Steel Metric Bolt Assortment (Lock & Flat Washers),Metric Screw Assortment, Socket Head Cap Screws, Metric Bolts and Nuts Assortment Kit, 1415pcs

Mywish 254Pcs Nuts and Bolts, 1/4 20 5/16 18 3/8 16 Bolt, Heavy Duty 304 Stainless Steel Bolts and Nuts Kit with Flat Spring Washers, Includes 10 Common Sizes, Fully Threaded

You may also like...

Fgruh 358PCS Machine Screws and Nuts Assortment Kit, #6-32#8-32#10-24 Phillips Pan Head Bolts Assorted, 304 Stainless Steel Nuts Bolts and Flat Washers Set

Mywish 1290 Pieces M2 M3 M4 M5 Screw Nuts and Bolts Assortment Kit, Metric Screws 304 Stainless Steel Button Head Socket Cap Metric Screw Assortment with Flat Washers/Nuts/Hex Wrenches 16 Sizes

Mywish 448PCS M5 M6 M8 Screw Set, Metric Bolt Assortment, 304 Stainless Steel, Nuts and Bolts Set Flat & Spring Washers, Hex Head Cap Screws Bolts and Nuts Kit, Fully Thread

Fgruh 750PCS M3 Screws Assortment Kit, M3x6/8/10/12/16/20/25/30 mm Hex Socket Head Bolts, Nuts & Washers Assorted Set - 12.9 Alloy Steel Black Zinc Plated M3 Screw for 3D Printer,DIY

Mywish 380 Pcs M4 Screw Nuts and Bolts Assortment Kit, 304 Stainless Steel Button Head Socket Cap Metric Screws Bolts, Spring & Flat Lock Washers/Nuts/Hex Wrenches, M4*8/10/12/16/20/25/30

121PCS Nuts and Bolts Assortment Kit, M4 M5 M6 Phillips Head Machine Screws Assorted Set with Storage Case, Small Metric Bolts Nuts and Flat Washers Kit

wugongshan 1080 Pcs Screws Bolts and Nuts Assortment Kit, Metric Machine Screws and Nuts and Flat Washers, M3/M4/M5/M6 Cross Slotted Round Head Bolts Sets (C)

smseace 516Pcs Nuts and Bolts Assortment Kit 21-Sizes M3/M4/M5/M6 Nut Bolt Washer Assortment Kit for Machinery, Furniture, Automotive, Motorcycle Repairs

1575 PCS Nuts and Bolts Assortment Kit, Stainless Steel Phillips Pan Head & Flat Head Screws, Assorted Nuts Bolts Washers with Double Sided Organizer Box

Dianrui 2013 PCS Metric & SAE Nuts & Bolts & Wood Screws Assortment Kit, Phillips Pan Head & Flat Head Screw, Grade 8.8 Metric Hex Bolt Set and Assorted Screws Nuts Bolts Washers (3 Trays)

Sign up and get exclusive special deals