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Machine screws are essential for countless assembly and repair tasks, from electronics to furniture. Selecting the correct type ensures a secure and reliable connection, preventing potential damage or failure. Understanding key features will help you choose the most suitable screws for your specific project needs.
Premium Material: Our mixed round head cross head screws and nuts and flat washers are made of outstanding metal material with smooth edges, which offers good corrosion resistance, rust resistance, and oxidation resistance, ensure long time using.
Easy to Use: These assorted nuts and bolts and washers sets are easy to use. Our screw thread is smooth, clean, and accurate. And the compact thread is not easy to out of shape and slid in the process of rolling.
Easy to Store: All M3 M4 M5 M6 cross pan head machine screws and bolts and nuts and washers are stored in a separate girds plastic storage box, easy to store, use, carry, and get it, perfect to replace broken and missing screws.
Wide Applications: This package includes a variety of popular sizes of screws, nuts, and washers, commonly used in machinery, furniture, car, motorcycle repair, environmental protection equipment, 3D printing equipment, communication equipment, power...
Package Includes: You will receive 16 kinds of screws, in the size of M3*6mm, M3*10mm, M3*14mm, M3*20mm, M4*10mm, M4*20mm, M4*25mm, M4*30mm, M5*20mm, M5*30mm, M5*40mm; m6*10, m6*20, m6*30, m6*40; 4 kinds of nuts, and 4 kinds of washers; a total of...
【STAINLESS STEEL MACHINE SCREWS】720Pcs assorted nuts bolts and flat washers are made of stainless steel 304, high-strength hardware with decent corrosion resistance. Perfect for general uses, even use it below the water line.
【PHILLIPS DRIVE & SAE SIZES】16 most common selections of phillips drive stainless screws, and #4, #6, #8 & #10 in useful lengths with matching nuts and washers. Coarse threaded and SAE measurement are perfect for homeowner, mechanic and fixer to keep...
【TIME & MONEY SAVER】Great bins for storage with a size chart on the inside and outside. Compared to the time it takes to go to a hardware store and the cost of buying single stainless screws, this assorted bolts and nuts kit is a time and money saver.
【WIDE APPLICATIONS】The nuts thread on the machine screws perfectly, and all the common screw sizes is typically needed for a regular household and professional mechanic, widely used in various household and garage uses. The machine screw assortment...
【REUSABLE CONTAINER】Everything is sorted in separate compartments that are labeled, which is nice when you're looking for a specific size. You can also reuse the plastic container after you've used all the phillips screw kit.
【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...
【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...
【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...
【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...
【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...
【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...
【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...
【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...
【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...
【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.
【Perfect for DIY Projects】 This M3 screw assortment kit are ideal for hobbyists working with 3D printing, electronics, RC models, DIY repairs, chair replacement and CNC machinery, offering precision for intricate designs.
【Standardized Metric Sizes】 -The M3-0.5 hex socket head cap screws set come with 8 commonly used lengths—M3 x 6mm, 8mm, 10mm, 12mm, 16mm,20mm,25mm,30mm—ideal for routine installations and repairs. They meet standard metric specs, the average error...
【Premium 12.9 Grade Alloy Steel】- This M3 bolts, nuts and washers assorted kit are crafted from high-strength 12.9 grade alloy steel, ensuring exceptional durability and load-bearing capacity. High-strength steel resists wear, corrosion, and heavy...
【Oil-Free & Rust-Proof】 -Black zinc plating means no greasy mess—keep hands and projects clean. Superior rust resistance ensuring long life.This 3mm black allen screw set perfect for any indoor/light outdoor use.
【Smart Storage Box 】- The metric machine screws kit comes in a durable, compartmentalized case with clear size labels—so you can spot the right screw instantly. Keeps your workspace tidy and speeds up project progress, making every job smoother.
【High Quality Materials 】Phillips pan head screws are made of 304 stainless steel,which has the characteristics of rust prevention and corrosion resistance. It can be used in any situation where corrosion resistance and strength are needed.
【Product Features】The machine screw head adopts a cross groove design, which is easy to align and prevent slipping during installation. The pressure bearing surface at the bottom of the disc head is wide, suitable for fixing soft materials such as...
【Wide Application】Machine screws can be applied in multiple fields, such as consumer electronics, household appliances, furniture and home furnishings, industrial machinery, construction and decoration industries, and are also suitable for daily...
【Easy to Use 】The nuts and bolts kits are packed in a transparent sorting box, and each size is sorted separately. The box is affixed with a post-it note, which is convenient for you to find what you need accurately without losing small parts.
【Package Include 】A total of 408PCS screws bolts and nuts assortment kit,6 different sizes phillips pan head bolt,Includes...
Package: You will receive 516pcs bolts and nuts Assortment kit，including 13 sizes screws，4 sizes nuts and 4 sizes flat washers，meet your needs in daily life
Material: Our Screws Bolts and Nuts Assortment kit is crafted from premium carbon steel, ensuring exceptional corrosion resistance, rust-proof qualities, and oxidation protection for long-lasting durability
Precision Engineering: Experience the difference with our meticulously crafted bolts and nuts kit; the smooth, clean threads ensure precision and ease of use while the tightly rolled threads resist deformation and slipping during application
Convenient Storage: M3, M4, M5, and M6 screws, bolts, nuts, and washers are neatly organized in a plastic storage box, making it exceptionally easy to store, access, and transport wherever you need your nuts and bolts machine screws
Versatile Application: This nuts and bolts assortment kit is perfect for a wide range of uses, including machinery, furniture, automotive, motorcycle repairs, communication tools, electrical facilities, electronics, ship assembly, and DIY projects
Machine Screws equipped with a beautiful hand box, it is easy to use, can be carried at any time, and can also be used as a toolbox.
1281 Pcs nuts and bolts assortment kit is made of 304 stainless steel, which has anti-rust, anti-corrosion and anti-oxidation properties. Better stress, no deformation,can be used in humid environment for a long time.
A variety of lengths of #4, #6, #8,#10,#1/4-20 Machine Screws, washers and nuts in ample quantities,easy storage, use, portability, perfect for replacing damaged and missing screws.
Our bolt and nut classification includes a total of 1605 pieces, which are widely used in various mechanical equipment, electronic products, furniture, construction industry, machinery, furniture, automobile and motorcycle maintenance and DIY design
This nut and bolts set includes 32 different sizes of screws. The dimensions of Phillips Pan Head Bolts are #4-40, #6-32, #8-32, # 10-24; The dimensions of Flat Head Screws are #6-32, #8-32, #10-24, #1/4-20.
More Sizes and Pieces: 2,251 pieces and 62 different hardware sizes. Screws: 19 sizes and 665 pieces of Wood and Sheet Metal Screws. Sae: 22 sizes and 720 pieces of Bolts (Phillips Head), Hex Nuts, and Washers. Metric: 21 sizes and 865 pieces of Bolts...
Built for Work: Grade 2 Nuts/Bolts. 6-Nib + Type 17 point Heat Treated Screws. Perfect for DIY Projects, with professional results. Use for household maintenance and repair, and so much more.
No-Mix Compartments: Interlocking lid prevents hardware from mixing and removable nested dividers can be re-arranged for further customization.
Stackable Cases: Durable construction with stackable bins and locking tabs for easy carrying and transport. Add on to your stack with additional empty bins to expand your collection.
Well Made Machine Screws:You can get 110Pcs pan head #8-32 machine screws with length 1/2",3/4",1",1-1/4",1-1/2",1-5/8",1-3/4",2",help you repair electrical work and household work,Extra Long Outlet Screws Solve all of loosen and sunken problems.
304 Stainless Steel 18-8:The wall plate screws are made of high quality steel,superior rust resistance,excellent corrosion resistance make them solid, great for both indoor and outdoor humid environment use
Pan Head &Heat Treatment:Featuring a pan head with phillips drive,with clean sharp cuts and no burrs.heat treatment improving the mechanical properties of the steel,increasing the plasticity and toughness and use for a long time.
Widely Use:This stainless Steel screws are perfect for many occations, electrical work,fix sockets,outlets and lights.cabinet pull handle,thick drawer pulls.Long screws lenght up to 2" can fit for electric boxes, backsplash outlet extender or deep outlet...
Packaging & Services: #8-32 machine screws packaged in thicken plastic case with clear labels,you can find what you want and no need to run hardware or store ,Save time and make repaired easy,Please connect us first if any problem,we will help you.
Last update on 2026-07-16 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Machine Screws
Material
The material of a machine screw significantly impacts its strength, corrosion resistance, and application suitability. Common materials include:
Stainless Steel: Offers excellent corrosion resistance, making it ideal for outdoor or humid environments. It's also strong and durable.
Steel (often zinc-plated): Provides good strength at a lower cost. Zinc plating adds some corrosion resistance, but it's less effective than stainless steel.
Brass: Softer than steel, it's non-magnetic and corrosion-resistant, often used in decorative applications or where electrical conductivity is needed.
Head Type
The head type determines how the screw is driven and how it sits on the surface. Popular options include:
Hex Head: Driven with a wrench or socket, offering high torque and a secure grip.
Pan Head: Features a slightly rounded top with short vertical sides, providing a good bearing surface.
Flat Head (Countersunk): Designed to sit flush with the surface when used with a countersunk hole, creating a smooth finish.
Round Head: Offers a decorative appearance and a large bearing surface.
Thread Type and Size
Machine screws typically have a uniform thread diameter along their length. Key considerations are:
Diameter: Measured in standardized sizes (e.g., #4, #6, #8, or metric M3, M4).
Length: Measured from the point where the head meets the shank to the tip.
Thread Pitch: Refers to the distance between threads. Coarse threads are common, while fine threads offer greater holding power in thin materials.
Frequently Asked Questions
What is the difference between a machine screw and a wood screw?
Machine screws have uniform threads along the entire shank and are designed to be used with a nut or tapped hole. Wood screws have tapered threads that grip into the wood fibers, providing their own holding power.
How do I determine the correct screw size?
You'll need to know the required diameter, length, and thread pitch for your application. Measure the hole or consult the specifications of the item you are fastening.
Are stainless steel screws always the best choice?
Stainless steel offers superior corrosion resistance, making it ideal for many outdoor or wet applications. However, for indoor use or where cost is a major factor, plated steel screws may be sufficient and more economical.
Can I use machine screws without a nut?
Yes, machine screws can be used in a pre-tapped hole (a hole with threads already cut into it) or a 'nut trap' where a nut is secured in place. This provides a strong, reliable fastening.
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