Best Socket Cap Machine Screws in 2026

Daisy
Last Updated: Jul 17, 2026

At a Glance: Our Top Picks for Socket Cap Machine Screws

VIGRUE 810 Pcs M4 x 4/6/8/10/12/14/16/18/20 mm Screw Assortment Kit 304 Stainless Steel Machine Screws Phillips Pan Head Screws Bolts Nuts Lock Flat Washers with Storage Box
#TOP1
Vigrue 810 Pcs M4 X 4/6/8/10/12/14/16/18/20 Mm Screw
9.6
PM SCORE
VIGRUE M5 x 10/12/16/25/30/35mm Button Head Screws, 328PCS 10.9 Grade Alloy Steel M5 Hex Socket Cap Machine Screws Bolts Nuts Washer Assortment Kit
#TOP2
Vigrue M5 X 10/12/16/25/30/35Mm Button Head Screws, 328Pcs
9.4
PM SCORE
VIGRUE M5 x 8/10/12/20/25/30mm Socket Head Screws, 328PCS 12.9 Grade Alloy Steel M5 Hex Socket Cap Machine Screws Bolts Nuts Washer Assortment Kit, Allen Drive
#TOP3
Vigrue M5 X 8/10/12/20/25/30Mm Socket Head Screws, 328Pcs
9.4
PM SCORE

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Summary of the Best Socket Cap Machine Screws of 2026

#TOP1

Vigrue 810 Pcs M4 X 4/6/8/10/12/14/16/18/20 Mm Screw Assortment Kit 304 Stainless Steel Machine Screws Phillips Pan Head Screws Bolts Nuts Lock Flat Washers With Storage Box

VIGRUE
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
VIGRUE-KING OF SCREW 9.93

Features

☛【 High Quality 】: the machine screw kit are made of 304 high quality stainless steel material, prevent rust, the density is 7.93 g/cm and with high temperature resistance of 1472°F.

☛【 Multi Screws Size 】: screw assortment includes M4 x 4mm/6mm/8mm/10mm/12mm/14mm/16mm/18mm/20mm screws, 30 pcs each size and 270 pcs matching nuts and flat washers,which can meet most of your demands

☛【 Widely Application 】: M4 phillips screws can be widely used in all kinds of precision machinery, classified instruments, instruments, electronic products, household appliances, communication products, locks, lamps, lights, toys, etc.

☛【 Sturdy Packed 】: All of 810 screw and nuts will be packed in a sturdy plastic box, can be use for a storage box Fixing component, industrial and construction fasteners.

☛【 After Sale Service 】: Lifetime Service, a replacement will be sent to you for free when there is any quality problem, we will do our best to provide you a pleasure shopping experience.

Vigrue M5 X 10/12/16/25/30/35Mm Button Head Screws, 328Pcs 10.9 Grade Alloy Steel M5 Hex Socket Cap Machine Screws Bolts Nuts Washer Assortment Kit

VIGRUE
328 M5 BUTTON
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
VIGRUE-KING OF SCREW 9.93

Features

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

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.

Easy to Get the Exact Sizes: The bolts and nuts come in a portable firm clear box with corresponding sizes label. It is convenient for you to put away and store, which allow you to get the one you need quickly, improving your project efficiently.

Vigrue M5 X 8/10/12/20/25/30Mm Socket Head Screws, 328Pcs 12.9 Grade Alloy Steel M5 Hex Socket Cap Machine Screws Bolts Nuts Washer Assortment Kit, Allen Drive

VIGRUE
328 SOCKET SCREWS M5
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
VIGRUE-KING OF SCREW 9.93

Features

Head Type: socket; Thread Diameter: 5mm; Thread Pitch: 0.8mm; Drive Type: internal allen hex; Driver wrench: 4mm; UNC Full Thread

Screw Length 8mm to 30mm: this cap screws kit include sizes M5 x 8/10/12/20/25/30mm socket 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

Great Performance: 12.9 grade alloy steel, which features high hardness, good wear resistance, good leak-proof effect, with good fatigue resistance for long time use.

Easy to Get the Exact Sizes: The bolts and nuts come in a portable firm clear box with corresponding sizes label. It is convenient for you to put away and store, which allow you to get the one you need quickly, improving your project efficiently.

1/4-20 Hex Socket Head Cap Screw, Vigrue 175Pcs Unc Hexagon Bolts Washers Nuts Assortment Kit Machine Screws Set Stainless Steel 18-8 (304), Length From 5/8" To 2"

VIGRUE
175 SOCKET HEAD SCREW 1/4-20
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
VIGRUE-KING OF SCREW 9.93

Features

Thread Diameter: 1/4 inch; Thread pitch: 1/20 inch; Thread length: 5/8", 3/4", 1", 1-1/4", 1-1/2", 2".

Drive Type: allen hex socket 3/16 Inch; Color: silver tone.

Convenient Box: 175pcs socket head cap screws nuts washers assortment kit, all of them are packed neatly in durable and sturdy box with clear size map for easy reach the size you need.

Durable Material: 304 stainless steel which offers excellent anti-rust and corrosion resistance property, and standard sae sizes with deep threads, won’t slip out easily

SAE Socket Head Cap Screws Kit are great to have around for use in all kinds of precision machinery industry, classified instruments, instruments, electronic products, printed projects, household appliances, communication products, locks, lamps, lights, toys, etc.

#TOP5

Virgue 870Pcs M3 Flat Head Phillips Machine Screws Black, M3 X 4/5/6/8/10/12/16/20/25/30Mm Countersunk Metric Machine Screws Assortment Kit

VIGRUE
SCREWS
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
VIGRUE-KING OF SCREW 9.93

Features

√ Drive Type: Phillips; Head Style: Flat Head; Exterior Finish: Black Oxide; Thread Pitch: 0.5mm.

√ Screw Type: M3 Phillips Flat Head Machine Screws Nuts Washers Assortment Kit.

√ Quantity: Contains 870pcs M3 x 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 30mm countersunk machine screws assortment.

√ The flat head top machine screws with nuts and washers of the same finish made from grade 4.8 Steel black oxided for superior corrosion resistance to ensure life-time use, fully threaded for maximum grip strength.

√ This black m3 machine screws have countersunk head to be able to sit flush with in a 82 degree tapered hole, used with nuts to fasten metal parts together. Widely used in vehicles, engines, tool assembly, electronic devices, and large-scale industrial equipment.

Vigrue #6-32 1-1/4, 1-1/2,1-3/4,2 Long Outlet Screws Long Electrical Outlet Screws Machine Screws Device Mounting Screws Electrical Outlet Extender For Fix Wonky And Sunken Outlets

VIGRUE
SISTA-SZCTJLD-100V
6.69 X 3.54 X 1.97 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
VIGRUE-KING OF SCREW 9.93

Features

✔【Multiple Common Sizes】Multiple sizes(1-1/4, 1-1/2,1-3/4,2) fit for when you need extra length to mount backsplash outlet extender or deep outlet box; These versatile flat head electrical screws are compatible with a number of devices for use on extended outlets

✔【Wide Applications】Cross recess head makes our device mounting screws become more suitable for fixed sockets, sockets, elbows, switches and dimmers, and apart from that, the long screws fit for embedded electrical boxes, residential or commercial electrical fasteners very well

✔【Reliable 304 Stainless Steel】The device mounting screws are not easy to rust, punched and have good corrosion resistance because of stainless steel, which makes truss head mounting screws can serve you for a long time

✔【Sort Storagebox】All of screws will be packed in a sturdy convenient case with label, can be use for a storagebox, is organized to you

💌【Satisfactory Service】In order to ensure the quality, we provide a 3-month worry-free return and exchange service, and 24-hour online professional service personnel. Your satisfaction will be our ultimate goal!

Vigrue 145Pcs Extra Long Outlet Screws Long Electrical Outlet Screws Wall Plate Screws White Machine Screws Device Mounting Screws Outlet Plate Screw Faceplate Screw

VIGRUE
145PLATE SCREWS
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
VIGRUE-KING OF SCREW 9.93

Features

Wall Plate Screws White #6-32x3/8" *30 #6-32x1/2" *30 #6-32x3/4" *20 #6-32x1" *15

Long Outlet Screws #6-32x1-1/4" *15 #6-32x1-1/2" *15 #6-32x1-3/4" *10 #6-32x2" *10

Wall Plate Screws White with a slotted oval head, perfect for when you need to replace decorative screws versatile oval head light switch screws compatible with many devices and wall plates.

Long Outlet Screws: Fit for when you need extra length to mount backsplash outlet extender or deep outlet box; These versatile flat head electrical screws are compatible with a number of devices for use on extended outlets, more suitable for fixed sockets, sockets, elbows, switches and dimmers, and apart from that, the long screws fit for embedded electrical boxes, residential or commercial electrical fasteners very well.

Reliable material: the device mounting screws are not easy to rust, punched and have good corrosion resistance. Wide applications: Switch Plate Screws Ideal For DIY Home Repair Tool Kit, Electrician Screw For Handyman Tool.

Top 10 machine screws Brands on Amazon

Here is the list of top-rated brands that were evaluated by PM.

Brand Count
Vigrue 7

Top 10 machine screws Brands Pie Chart


We've carried out a comprehensive analysis of 1,735 reviews on machine screws, using our selection criteria to identify the best options in the fasteners. Our findings reveal that most customers typically select machine screws priced around $18.70, with top brands including wugongshan, helifouner, poneya, trivd frol, besitu, senyard, jrouth, the hillman group and kindroufly and jackson palmer

Our team of expert editors reviewed these high-quality items and handpicked the top 7 machine screws for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the fasteners category. These include shenzhen wujing snail technology co., helifouner, dingjia, trivdpro, besitu, fittop, plutustore, amazon.com and kindroufly and hillstone .

We are dedicated to assisting our users in finding the right screws Products based on their needs, saving them considerable time when choosing which machine screws to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.