Best Insulation Screws in 2026

{Metric & Imperial Sized Standoffs} Bolt Dropper’s PC screws kit has both metric and imperial motherboard screws and standoffs offering a 99% fit in all types of motherboard installations. Other kits don’t include imperial size motherboard risers and screws, which are necessary in many installations. No need to buy multiple kits to try and find the right size fastener with Bolt Dropper’s.

{502 Piece Kit} The Bolt Dropper PC screw kit contains more of the most used screws, nuts, washers, and computer case thumb screws than others. This way you don’t run out during your build or repair. Other kits contain only a few PC case screws for your chassis, but Bolt Dropper contains more than double of the next leading brand.

{High Quality Screws} High quality screws with deep cut drives prevent stripping and snapping as well as ensuring a secure fit. When you’re constantly upgrading and removing parts, a screw that doesn’t strip is essential. Bolt Dropper’s precision-made fasteners add a layer of confidence knowing you can add and remove them time and time again without worry of ever stripping a head or snapping a screw.

The socket head cap screws are 100% stainless steel 304 (A2-70) which offers a high level of chemical and corrosion resistance.

Thread Diameter: 6mm; Thread Length: 25mm; Total Length: 31mm; Pitch Size: 1.0mm.

Head Diameter: 10mm; Head Height: 6mm; Drive Type: Allen Hex Socket 5mm; Color: Silver Tone.

Made of high quality stainless steel 304.

Head Diameter 9.5mm; Head Height 2.75mm; Allen Hex Drive 3mm.

System of Measurement: Metric; Thread Diameter: 5mm; Thread Pitch: 0.8mm; Screw Length: 8mm.

Head Type: Button | Size: M3 M4 M5 | Finish: Black Oxide| Material: 10.9 grade alloy steel| Drive Type: Internal Hex| Quantity: 570pcs

Various Head Dia. & Length. Includes M3 M4 M5(head dia.) in length of 6mm/8mm/10mm/12mm/16mm/20mm.

These metric bolts are made from alloy steel heat treated to provide a good balance of hardness and toughness, black oxided increase their corrosion resistance.

Standard Metric: Our M2 M3 M4 M5 screws and nuts accord with standardized metric system. And the average error is less than 0.01mm.

High Quality: The kit is made of high quality 304 stainless steel, which features is strength and offers good corrosion resistance in bad environment like high temperature, cold weather, and high humidity areas.

Broad Application:M2 M3 M4 M5 Hex Socket Head Screws Washers and Nuts Assortment Kit Serves a wide range of use and for professionals, amateurs, landlords, repairmen, other DIY .

Wide Application:This M3 bolts and nuts assortment kit and m3 screws is great for professionals, amateurs, landlords, handymen, repair men, women, woodworking, construction, plumbing, HVAC and so on. These metric bolts and nuts assortment can be widely used in manual DIY production, robots, UAVs, aerial aircraft, 3D printing equipment, communication equipment, medical equipment, food machinery, petrochemical industry, marine power facilities, architecture and other fields .The M3 scr

High Quality: This M3 bolts and nuts assortment kit M3 screws hex head screws M3 nut M3 washer is made of high quality Alloy Steel,which features high strength and offers good corrosion resistance in bad environment like high temperature ,cold weather, and high humidity areas.And also these metric 3mm screw assortment kit anti oxidation,high toughness. They have superior rust resistance and the excellent , which can ensure use these m3 screws m3 nut and m3 washer black a long time,ver

Safety and Sweet:Our M3 bolts and nuts assortment kit m3 screws m3 nuts and m3 washer with high quality material, which is environmental protection and non-poisonous. In the process of using, these screws and nuts are no toxic substances releasing to ensure your safety. And we add an Allen Wrench on package to make working convenience for you when you are using these m3 nuts and bolts.

High Quality 240pcs Metric M3 Hex Drive Rounded Head Screws and Hex Nuts Assortment Kit.

Screw thread: M3/(3mm) with thread pitch: 0.5mm;Fully Threaded

M3 different length:6MM,8MM,10MM,12MM,14MM,16MM,18MM,20MM,25MM;Length is measured from under the head

(m3 cap head screws)Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head.

(m3X 6mm screws)Metric screws are also known as A2 stainless steel screws.

(Long 6mm bolt)Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.

★【RELIABLE QUALITY:】Made of top quality carbon steel, black nikel plated. It is not easy to rust, has stable performance, corrosion resistance and high hardness.

★【SPECIFICATIONS: 】0.63 ''/ 16 mm M6 Thread by 1/2" Long Phillips Pan Head Screw, 50x M6 Cage Nuts, 50x M6 Pan Head Screws, 50x Washers

★【WIDE APPLICATION:】M6 Rack Mount Screw Kit is great for mounting your rack server cabinets, server shelves, A/V device enclosures, and more. These M6 cage nuts and screws are universally compatible with all square-hole racks and cabinets.

🔩 【Wide Application】XOOL self-tapping screw set is suitable for installing drywall/slate, repairing wooden furniture and cabinets. These screws can be used in a variety of materials and are very suitable for home, office and shop use.

🔩 【High quality】XOOL self-tapping screw set is made of high-quality black carbon steel, with a black phosphate coating on the surface, which has higher corrosion resistance and rust-proof effect than ordinary screws, longer service life and not easy to damage.

🔩 【Various sizes】We provide these 8 common sizes for you to use. For your convenience, we have listed US sizes and metric systems: 3/4” or 20mm 1” or 25mm 1 1/4” or 30mm 1 3/8” or 35mm 1 5/8” or 40mm 2" or 50mm 2 1/2" or 60mm 3'or 70mm. A variety of sizes can meet the maximum of requirement for you.

★High Quality Hex Socket Flat Head Countersunk Bolts Screw Nuts Kit

★Drive Type: Hex Socket; Head Style: Flat Head

★Material: High Quality 304 Stainless Steel; Different Size: M2

Socket Cap Head Screws feature a socket for use with a Hex Key (also known as an Allen key).

All products within this range are manufactured in accordance with industry standards. Socket Head Cap Screws are manufactured using a high-precision machining process, allowing tolerances of ±0.25mm to be achieved.

All products within this range are fully threaded

√ High quality 304 stainless steel hex socket head cap screws bolts nuts flat washers kit. We also provide three free relevant wrenchs in our sets.

√ Nuts and flat washers expand the contact area and reduce the pressure in order to protect the screws and parts.

√ Many various sizes of M3 M4 M5 screws (Drive Type: Hex Socket; Head Style: Button Head)with matching nuts and flat washers meet different people’s demands, the necessity of your home life.Package quantity: 900Pcs.Everything is very organized and decent in a sturdy convenient case, can be use for a storage box, is organized to you, very easy to open and close.

Head Type: socket; Thread Diameter: 5mm; Thread Pitch: 0.7mm; Drive Type: internal allen hex; Driver wrench: 3mm; UNC Full Thread

Screw Length 8mm to 30mm: this cap screws kit include sizes M4 x 8/10/12/20/25/30/35/40mm socket head screws bolts with matching washers and nuts.

Quantity: the metric M4 screws kit contains 8 sizes of the most in-demand models alloy steel button head socket screws nuts washers, totally 365pcs

⏩【QUALITY & DURABLE】The black surface M6 hex drive socket cap bolts kit prevents it from rustiness, corrosion and oxidation. Black Zinc surface has the performance of wear-resistance, high hardness and good toughness.

⏩ Drive Type: Hex Socket; Head Style: Round Head; Fit hex type: 4mm; Bolts Sizes(16-80mm): M6 x 16/20/25/30/35/40/45/50/55/60/65/70/75/80mm; M6 nuts 【Metric, please See Picture 2 for Specific Dimensional Size】

⏩【WELL MADE BED SCREW】 Hex socket head crib bolts ensures stability, and will not easy to skid. Nuts will connect with the bolts correctly, and is less likely to cam out. Without burrs, these crib screws has clear threads and easy to screw in.

DIMENSIONS: Diameter: #6, Length: 1/2” | Metric Dimensions: M3.5 X 12mm

These Flat Head Screws are made of 18-8 (A2) Stainless Steel and have a Black Oxide Coating which is one of the highest forms of corrosion resistant metals, making it last longer than other hardware on the market today.

TPOHH stainless hardware is great to have around for use in wood and wet environments. TPOHH hardware is the highest quality available on the market. They are strong, corrosion resistant and will support all of your projects.

M8 Specification : Pitch 1.25 mm. Thread Diameter 8 mm; Length: 20mm/25mm/30mm/35mm/40mm. Drive Wrench: 5mm

M6 Specification : Pitch 1.0 mm. Thread Diameter 6 mm; Length: 16mm/20mm/25mm/30mm/40mm; Drive Wrench: 4mm

Great Performance: 10.9 grade alloy steel, which features high hardness, good wear resistance, good leak-proof effect, with good fatigue resistance for long time use.

1.Screw Dia Type : #8,#10,#12 Self Tapping Drilling Metal Screws Assortment Kit

2.Length Size( Metric) : #8x1/2”,#8x3/4”,#8x1”,#10x1/2”,#10x3/4”,#10x1”,#12x3/4”,#12x 1-1/2”,#12x2”

3.High Quality: Made of 410 Stainless Steel ,which is one of the highest forms of corrosion resistant steel, making it last longer than other hardware on the market today.

BLEED BRAKES: Use the ABN Brake Bleed Screw 90pc SAE and Metric Assortment to replace damaged or lost bleeder screws and make bleeding brake lines of any air a one-person job for brake pad or rotor changes; Replaces the original bleeder valves in calipers and wheel cylinders with a spring-loaded one-way ball design; Simply install, bleed your brakes, and leave in place for future bleedings

18 SIZES: Standard (SAE) and metric brake bleeder screw sizes; (5) 1/4"-28 x .92”, (5) 5/16”-24 x 1.01”, (5) 3/8”-24 x 1.19, (5) 3/8”-24 x 1.51”, (5) 7/16”-20 x 1.28”, (5) 7/16”-24 x 1.76”, (5) 7/16”-24 inverted, (5) M7 x 1-34mm, (5) M8 x 1-26.4mm, (5) M8 x 1-37.3mm, (5) M8 x 1.25-25.2mm, (5) M8 x 1.25-31.6mm, (5) M10 x 1-27.5mm, (5) M10 x 1-32.75mm, (5) M10 x 1-35.2mm, (5) M10 x 1-36.7mm, (5) M10 x 1.25-33.1mm, (5) M10 x 1.5-29.3mm

BUILT TO LAST: All metal construction with various platings and coatings for maximum strength, longevity, and resistance to rust and corrosion; Close between pumps to prevent old fluid and air from re-entering the line by using your check valve (not included)

Note: this screw assortment kit is metric which includes M2 M3 M4 M5, PLEASE CONFIRM THE SIZE before you purchase

【Quantities】--- the kit includes M2x8mm/12mm/16mm/20mm, M3x8mm/12mm/16mm/20mm, M4x8mm/12mm/16mm/20mm, M5x8mm/12mm/16mm/20mm screws with matching nuts and washers; total is 1225pcs；

【Handy Box】--- This set is organized by size in a durable and sturdy case, which is easy to get the bolts you need and convenient to put off your tiny parts

METRIC STAINLESS BOLT KIT- set screw kit includes screws, bolts, washers and allen wrench drives. Screws and bolts conform to the standardized metric system, with an error less than 0.01mm.

STAINLESS STEEL NUTS AND BOLTS - The metric socket cap set is made of high quality 304 stainless steel, which provides screws and nuts with corrosion and abrasion resistance, toughness, super hardness.

METRIC ALLEN BOLTS KIT - The metric screw kit can be widely used in all kinds of precision machinery instruments, electrical and electronic products, household appliances, communication products, door locks, toys and other appliances

EXCELLENT MATERIAL: Made of 12.9 class alloy steel, these internal hex drive cup-point set screws, has excellent corrosion resistance property, and won’t slip out easily.

VARIETY OF SIZES: Including metric sizes of M2.5*4mm, M2.5*5mm, M3*3mm, M3*4mm, M3*10mm, M4*4mm, M4*6mm, M4*8mm, M5*5mm, M5*8mm, M5*10mm, M6*6mm, M6*10mm, M8*8mm, M8*12mm; 20pcs for each size, total is 300pcs.

WITH HANDY BOX: All grub screws and wrenches are packed in a convenient transparent storage box, with clear size lable on it, easy to install and access.

Head Type: Button; Thread Diameter: 5mm; Thread Pitch: 0.8mm; Drive Type: internal allen hex; Driver wrench: 3mm; UNC Full Thread

Screw Length 10mm to 35mm: this cap screws kit include sizes M5 x 10/12/16/25/30/35mm button head screws bolts with matching washers and nuts.

Quantity: the metric M5 screws kit contains 6 sizes of the most in-demand models alloy steel button head socket screws nuts washers, totally 328pcs

Quality Material: set screw kit made of 304 stainless steel, excellent rust resistance and corrosion resistance, free from burrs, won’t slip out easily.

Sizes Included: M3*3mm, M3*4mm, M3*10mm, M4*4mm, M4*6mm, M4*8mm, M5*5mm, M5*8mm, M5*10mm, M6*6mm, M6*10mm, M8*8mm, M8*12mm.

Wide Applications: Suitable for door handles, faucet, light fixture, knobs, armament repair, plumber and other small repairs around the shop, garage or home.

High Quality Hex Socket Head Cap Screw Assortment Kit

135pcs metric different size with different length 304 stainless steel Hex Socket Head Cap Screw

different size :M2.5 M3 M4 M5 M6 M8;different length:8MM~25MM

【HINGED SCREW COVER CAPS】 Great for giving a finished look for exposed mounting screws. Apart from its decorative characteristics, this plastic snap cap for screws can protect screws from rust and corrosion, provides durable, attractive coverage for screw and nail holes.

【EASY TO INSTALL】 With a one-piece hinge design, the plastic hinge screw cap just needs to put the screw through the hole on the plastic screw cover, tighten the screw to the proper position you need, and cap it.It is simple solution to attractively conceal screws

【COMPATIBLE COMPATIBLE SCREW SIZES】 5mm ID M size Hinged Snap Caps Screw Covers are suitable for #6 , #8 and #10 screws (Metric M3, M4, M5). These screw covers fitting most types of screws, such as pan head, csk head, truss head, rivets and other flat bottomed fastener heads.

HIGH QUALITY ---- 304 Stainless Steel Internal Hex Drive Cup-Point Set Screws Assortment Kit, corrosion resistant.

WIDE APPLICATIONS ---- Suitable for door handles, faucet, light fixture, knobs, armament repair, plumber, and other small repairs around the shop, garage or home, bathroom fixture, etc.

Handy Assortment Box: All grub screws are packed in a transparent storage box, easy to access.

【Premium Material】:All the flat head wood screws made of high quality Carbon Steel with Black Oxide Finish so that the wood screws are good to resistant to rust and good corrosion resistance in bad environment,great quality and durable.

【High Quality Workmanship】:Adopting high-precise cutting technology, our M3 screws designed with coarse thread is very clean,precise, the deep and clear with a sharp tip, can easily penetrate the wood and plastic and ensure a secure hold,is not easy to deform and slid while using.

【Quantity and Sizes】:There are totally 100PCS flat head self-tapping wood screws, and the size is M3 x 8mm in US sizes or 5/16 Inch in Metric size.

Standard Thread Size: M6 (1mm Pitch); Thread Length: 20mm / 0.79"; Knurled Head Diameter: 21mm / 0.83"; Total Height: 33mm / 1.3"

Safe and secure knurled thumb screws for the ultimate in adjusting and tightening control. The screws are neat and clear, the force is even, and it is not easy to slip.

Tightly -in plated carbon steel metal insert ensures optimal durability and functionality, easy to install. Great for saw, drill press, lathe and routing jigs, packaging machinery, printing equipment, woodworking machinery and equipment.

Package includes (90PCS) Standard (SAE) & Metric Bleeding Screws Bleed Kit

For most of the vehicle to make a damaged or lost bleeder screw replacement

Size：M7x1.0 - 31.5mm,M8x1.0 - 29.7mm,M8x1.0 - 37.3mm,M8x1.25 - 25.1mm,M8x1.25 - 30.2mm, M10x1.0 - 29.2mm, M10x1.0 - 32.80mm,M10x1.0 - 35.1mm,M10x1.0 - 35.8mm,M10x1.25 - 33.1mm,M10x1.5 - 29.2mm