Best Plastic Socket Cap Screws in 2026

Daisy
Last Updated: Feb 6, 2026

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

Swpeet 120Pcs M6x16mm/20mm/25mm/30mm/35mm Carbon Steel Black Hex Drive Socket Cap Bolts Barrel Nuts Kit with 1Pcs Allen Wrench, Screw Post Fit for Furniture Countsunk Belt Buckle Leather Binding Bolts
#TOP1
Swpeet 120Pcs M6X16Mm/20Mm/25Mm/30Mm/35Mm Carbon Steel Black Hex Drive
9.4
PM SCORE
Swpeet 25Pcs M6x20mm Carbon Steel Black Hex Drive Socket Cap Bolts Barrel Nuts Assortment Kit with 1Pcs Allen Wrench, Screw Post Fit for Furniture Countsunk Belt Buckle Leather Binding Bolts
#TOP2
Swpeet 25Pcs M6X20Mm Carbon Steel Black Hex Drive
9.4
PM SCORE
Swpeet 120Pcs M6x40mm/50mm/60mm/70mm/80mm Carbon Steel Black Hex Drive Socket Cap Bolts Barrel Nuts Kit with 1Pcs Hex Key, Screw Post Fit for Furniture Countsunk Belt Buckle Leather Binding Bolts
#TOP3
Swpeet 120Pcs M6X40Mm/50Mm/60Mm/70Mm/80Mm Carbon Steel Black Hex Drive
9.4
PM SCORE

* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.

Summary of the Best Plastic Socket Cap Screws of 2026

Market Overview
Plastic Socket Cap Screws Reviewed
  • Reviews Analyzed: 1418 Items
  • PM Avg. Rating: 6.4 / 10
13 Products Evaluated
  • Highest Price: $18.95
  • Lowest Price: $5.59
  • Avg. Price: $10.76

Swpeet 120Pcs M6X16Mm/20Mm/25Mm/30Mm/35Mm Carbon Steel Black Hex Drive Socket Cap Bolts Barrel Nuts Kit With 1Pcs Allen Wrench, Screw Post Fit For Furniture Countsunk Belt Buckle Leather Binding Bolts

SWPEET
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Swpeet 9.86

Features

✿ 1, WHAT YOU GET ---- In this kit, You will get 120Pcs Carbon Steel Black Hex Drive Socket Cap Bolts Barrel Nuts Kit with 1Pcs Allen Wrench, Including M6x16mm: 25Pcs; M6x20mm: 15Pcs; M6x25mm: 10Pcs; M6x30mm: 10Pcs; M6x35mm: 10Pcs and M6x17 Nuts: 60Pcs. We now have a variety of sizes to choose from, you can choose whatever you need, which can fully meet your daily needs.

✿ 2, PRODUCT SIZE ---- Applicable Hole Dia:5/16"(8mm); Male Thread Size(Screw): M6 x 16mm(D*L); M6 x 20mm(D*L); M6 x 25mm(D*L); M6 x 30mm(D*L); M6 x 35mm(D*L); Female Thread Size(Top): M6 x 17mm(D*L). Threaded post lets you open and re-attach piece where needed.

✿ 3, HIGH QUALITY ---- Every barrel nut and bolt is Precision mechanical thread, made of high-quality carbon steel material, black powder coating, anti-rust. Those have the performance of high hardness and good toughness, The screw thread is clear and not easy to loose. which make the kit more sturdy and durable.

✿ 4, WIDE APPLICATION ---- It is ideal for thin albums, decorative bags, leather belts, sandals, boots, leather bags, etc.Fit for all kinds of art and leather crafts and DIY clothing production. Also Used for: bed, table, chair, crib, or workbench, boards, cabinets, cupboards, other furniture.

✿ 5, EASY TO INSTALL ---- Threaded post lets you open and re-attach piece where needed. Make a hole larger than 0.5mm than the diameter of the nut rod, put screws and nuts on both sides of the locked object, and select the appropriate tool to lock it. Easily applied with standard screwdriver.

Swpeet 25Pcs M6X20Mm Carbon Steel Black Hex Drive Socket Cap Bolts Barrel Nuts Assortment Kit With 1Pcs Allen Wrench, Screw Post Fit For Furniture Countsunk Belt Buckle Leather Binding Bolts

SWPEET
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Swpeet 9.86

Features

✿ 1, WHAT YOU GET ---- In this kit, You will get 25Pcs Carbon Steel Black Hex Drive Socket Cap Bolts Barrel Nuts Kit with 1Pcs Allen Wrench, Including M6x20mm; 12Pcs and M6x17 Nuts: 12Pcs. We now have a variety of sizes to choose from, you can choose whatever you need, which can fully meet your daily needs.

✿ 2, PRODUCT SIZE ---- Applicable Hole Dia:5/16"(8mm); Male Thread Size(Screw): M6x16mm; M6x20mm; M6x25mm; M6x30mm; M6x35mm; M6x40mm; M6x45mm; M6x50mm; M6x55mm; M6x60mm; M6x65mm; M6x70mm; M6x75mm; M6x80mm and M6x17(D*L); Female Thread Size(Top): M6 x 17mm(D*L). Threaded post lets you open and re-attach piece where needed.

✿ 3, HIGH QUALITY ---- Every barrel nut and bolt is Precision mechanical thread, made of high-quality carbon steel material, black powder coating, anti-rust. Those have the performance of high hardness and good toughness, The screw thread is clear and not easy to loose. which make the kit more sturdy and durable.

✿ 4, WIDE APPLICATION ---- It is ideal for thin albums, decorative bags, leather belts, sandals, boots, leather bags, etc.Fit for all kinds of art and leather crafts and DIY clothing production. Also Used for: bed, table, chair, crib, or workbench, boards, cabinets, cupboards, other furniture.

✿ 5, EASY TO INSTALL ---- Threaded post lets you open and re-attach piece where needed. Make a hole larger than 0.5mm than the diameter of the nut rod, put screws and nuts on both sides of the locked object, and select the appropriate tool to lock it. Easily applied with standard screwdriver.

Swpeet 120Pcs M6X40Mm/50Mm/60Mm/70Mm/80Mm Carbon Steel Black Hex Drive Socket Cap Bolts Barrel Nuts Kit With 1Pcs Hex Key, Screw Post Fit For Furniture Countsunk Belt Buckle Leather Binding Bolts

SWPEET
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Swpeet 9.86

Features

✿ 1, WHAT YOU GET ---- In this kit, You will get 120Pcs Carbon Steel Black Hex Drive Socket Cap Bolts Barrel Nuts Kit with 1Pcs Hex Key, Including M6x40mm: 25Pcs; M6x50mm: 15Pcs; M6x60mm: 10Pcs; M6x70mm: 10Pcs; M6x80mm: 10Pcs and M6x17 Nuts: 60Pcs. We now have a variety of sizes to choose from, you can choose whatever you need, which can fully meet your daily needs.

✿ 2, PRODUCT SIZE ---- Applicable Hole Dia:5/16"(8mm); Male Thread Size(Screw): M6 x 40mm(D*L); M6 x 50mm(D*L); M6 x 60mm(D*L); M6 x 70mm(D*L); M6 x 80mm(D*L); Female Thread Size(Top): M6 x 17mm(D*L). Threaded post lets you open and re-attach piece where needed.

✿ 3, HIGH QUALITY ---- Every barrel nut and bolt is Precision mechanical thread, made of high-quality carbon steel material, black powder coating, anti-rust. Those have the performance of high hardness and good toughness, The screw thread is clear and not easy to loose. which make the kit more sturdy and durable.

✿ 4, WIDE APPLICATION ---- It is ideal for thin albums, decorative bags, leather belts, sandals, boots, leather bags, etc.Fit for all kinds of art and leather crafts and DIY clothing production. Also Used for: bed, table, chair, crib, or workbench, boards, cabinets, cupboards, other furniture.

✿ 5, EASY TO INSTALL ---- Threaded post lets you open and re-attach piece where needed. Make a hole larger than 0.5mm than the diameter of the nut rod, put screws and nuts on both sides of the locked object, and select the appropriate tool to lock it. Easily applied with standard screwdriver.

M6 X 35Mm Socket Cap Furniture Bolts With Barrel Nuts For Furniture Cots Beds Crib And Chairs, Stainless Steel 18-8 (304), 10 Pairs

MEWUDECOR
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MewuDecor Online 9.86

Features

Product Type: High Quality Stainless Steel Furniture Bolts Nuts Set.

Material: Stainless Steel 18-8 (304); Finish: Bright Finish.

Drive Type: Hex Socket; Head Style: Round Head; Screw Size: M6 x 35mm; Barrel Nuts Size: Total Length 15mm; Threaded Hole Diameter 6mm; Outer Diameter: 8.0mm, fit for 5/16" (8mm) Hole Dia.

Package Included: 10 Pairs (10 PCS Furniture Bolts and 10 PCS Barrel Nuts).

Ideal Application for all kinds of DIY art, leather crafts, and clothing making.

Swpeet 120Pcs M6X16Mm/20Mm/25Mm/30Mm/35Mm Nickel Plated Sliver Hex Drive Socket Cap Bolts Barrel Nuts Kit With 1Pcs Allen Wrench, Screw Post Fit For Furniture Countsunk Belt Leather Binding Bolts

SWPEET
S1857
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Swpeet 9.86

Features

✿ 1, WHAT YOU GET ---- In this kit, You will get 120Pcs Nickel Plated Sliver Hex Drive Socket Cap Bolts Barrel Nuts Kit with 1Pcs Allen Wrench, Including M6x16mm: 25Pcs; M6x20mm: 15Pcs; M6x25mm: 10Pcs; M6x30mm: 10Pcs; M6x35mm: 10Pcs and M6x17 Nuts: 60Pcs. We now have a variety of sizes to choose from, you can choose whatever you need, which can fully meet your daily needs.

✿ 2, PRODUCT SIZE ---- Applicable Hole Dia:5/16"(8mm); Male Thread Size(Screw): M6 x 16mm(D*L); M6 x 20mm(D*L); M6 x 25mm(D*L); M6 x 30mm(D*L); M6 x 35mm(D*L); Female Thread Size(Top): M6 x 17mm(D*L). Threaded post lets you open and re-attach piece where needed.

✿ 3, HIGH QUALITY ---- Every barrel nut and bolt is Precision mechanical thread, made of high-quality Nickel Plated Sliver material, powder coating, anti-rust. Those have the performance of high hardness and good toughness, The screw thread is clear and not easy to loose. which make the kit more sturdy and durable.

✿ 4, WIDE APPLICATION ---- It is ideal for thin albums, decorative bags, leather belts, sandals, boots, leather bags, etc.Fit for all kinds of art and leather crafts and DIY clothing production. Also Used for: bed, table, chair, crib, or workbench, boards, cabinets, cupboards, other furniture.

✿ 5, EASY TO INSTALL ---- Threaded post lets you open and re-attach piece where needed. Make a hole larger than 0.5mm than the diameter of the nut rod, put screws and nuts on both sides of the locked object, and select the appropriate tool to lock it. Easily applied with standard screwdriver.

Swpeet 25Pcs M6X25Mm Nickel Plated Sliver Binding Screws Hex Drive Socket Cap Bolts Barrel Nuts Assortment Kit With 1Pcs Allen Wrench, Screw Post Fit For Furniture Countsunk Belt

SWPEET
S1860
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Swpeet 9.86

Features

✿ 1, WHAT YOU GET ---- In this kit, You will get 25Pcs Nickel Plated Sliver Hex Drive Socket Cap Bolts Barrel Nuts Kit with 1Pcs Allen Wrench, Including M6x25mm; 12Pcs and M6x17 Nuts: 12Pcs. We now have a variety of sizes to choose from, you can choose whatever you need, which can fully meet your daily needs.

✿ 2, PRODUCT SIZE ---- Applicable Hole Dia:5/16"(8mm); Male Thread Size(Screw): M6x16mm; M6x20mm; M6x25mm; M6x30mm; M6x35mm; M6x40mm; M6x45mm; M6x50mm; M6x55mm; M6x60mm; M6x65mm; M6x70mm; M6x75mm; M6x80mm and M6x17(D*L); Female Thread Size(Top): M6 x 17mm(D*L). Threaded post lets you open and re-attach piece where needed.

✿ 3, HIGH QUALITY ---- Every barrel nut and bolt is Precision mechanical thread, made of high-quality Nickel Plated material, black powder coating, anti-rust. Those have the performance of high hardness and good toughness, The screw thread is clear and not easy to loose. which make the kit more sturdy and durable.

✿ 4, WIDE APPLICATION ---- It is ideal for thin albums, decorative bags, leather belts, sandals, boots, leather bags, etc. Fit for all kinds of art and leather crafts and DIY clothing production. Also Used for: bed, table, chair, crib, or workbench, boards, cabinets, cupboards, other furniture.

✿ 5, EASY TO INSTALL ---- Threaded post lets you open and re-attach piece where needed. Make a hole larger than 0.5mm than the diameter of the nut rod, put screws and nuts on both sides of the locked object, and select the appropriate tool to lock it. Easily applied with standard screwdriver.

Rustark 141Pcs M6X16Mm-80Mm 14 Sizes Furniture Joint Connector Bolt & Cap Nut Assortment Kit Flat Hex Socket Cap Bolts Screw Posts For Furniture Chair Crib Belt Leather Binding

RUSTARK
R-1038
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Tieda 9.78

Features

★【What’s Included】 - This set includes ①140pcs M6 connecting bolts and cap nuts + ② 1pcs hex key for quick installation. Besides, we also offer a wide selection of furniture connector bolt lengths at great value.

★【Connecting Bolts】 - Stiff, precise and durable. If you want to replace some stripped and loose hardware for better fixing and connecting, it’s a nice option for your projects. Features with clean thread with no burr, flat head design keeps it stable and tight.

★【Easy Installation】 - Simply drill a appropriately sized hole and insert the two ends of connecting bolts and cap nuts into it. Then, you can secure them in place by the included hex key.

★【Dimensions】 - Barrel Nuts Size(thread size x length): M6 x 17mm, Fits 8 mm (5/16 inch) Hole Dia.; Hex Head Socket Cap Bolts Size(thread size x length): M6 x 16mm, M6 x 20mm, M6 x 25mm, M6 x 30mm, M6 x 35mm, M6 x 40mm, M6 x 45mm, M6 x 50mm, M6 x 55mm, M6 x 60mm, M6 x 65mm, M6 x 70mm, M6 x 75mm, M6 x 80mm

★【Wide Application】 - You can use them to firmly connect furniture, such as cupboards, bed, cribs, bunk beds, table, cabinets, chairs. Suitable for all kinds of DIY art crafting like leather belts, bags, thin albums etc.

Mardatt 141 Pcs 14 Size M6X16Mm-80Mm Silver Nickel Plated Hex Drive Socket Cap Bolts Assortment Kit With Hex Key Countersunk Screw Barrel Nuts Binding Screws For Crib Belt Buckle Cabinet Furniture

MARDATT
M496
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Masaile2020 9.85

Features

【M6 Furniture Cap Bolt Kit】Includes 141 pcs 14 different sizes Hex Socket Cap Bolts (M6 x 16mm 20mm 25mm 30mm 35mm 40mm 45mm 50mm 55mm 60mm 65mm 70mm 75mm 80mm, each is 5pcs) + 70pcs Barrel Nuts + 1pc Hex Key. With multiple lengths available, you can choose the perfect size to meet different needs. Comes with a durable plastic case with size label for convenient storage.

【Strong and Rustproof Material】The furniture bolts and barrel nuts are made of premium carbon steel material with nickel plated, high hardness, smooth and burr-free. The rust preventative silver nickel finishes ensure their good performance even in wet environment, which also give them a slightly glossy appearance.

【Selected Custom Set】These furniture hardware features standardized metric thread on both the female threaded barrel nuts & the male threaded bolts, clean, accurate and neat. Once installed, they won’t easy to out of shape or slid in the process of rolling.

【Installs in An Instant】--- Making a strong joint is a Breeze. Just drill a hole larger 0.5mm than the diameter of 8mm/0.31 inch barrel nuts caps, then these set easily installs with the included a hex key. Give them a try.

【Multipurpose Hardware】 No matter if you need it for DIY furniture project or as a replacement parts, our product will be your best helper. They are not only widely used in furniture like cribs, bed frame, chairs, cabinets,bookcases, wardrobes, workbench, ect, but also fit for all kinds of art and leather crafts and DIY clothing production, such as thin albums, decorative bags, leather belts, sandals, boots, leather bags binding and more.

Mardatt 85 Pcs 7 Size M6X20Mm-80Mm Nickel Plated Silver Hex Drive Socket Cap Bolts Assortment Kit With Hex Key Countersunk Screw Barrel Nuts Binding Screws For Crib Belt Buckle Cabinet Furniture

MARDATT
M512
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING

Features

【M6 Furniture Cap Bolt Kit】Includes 85 pcs 7 different sizes Hex Socket Cap Bolts (M6 x 20mm 30mm 40mm, 50mm 60mm,70mm, 80mm each is 6pcs) + 70pcs Barrel Nuts + 1pc Hex Key. With multiple lengths available, you can choose the perfect size to meet different needs. Comes with a durable plastic case with size label for convenient storage.

【Strong and Rustproof Material】The furniture bolts and barrel nuts are made of premium carbon steel material with nickel plated, high hardness, smooth and burr-free. The rust preventative silver nickel finishes ensure their good performance even in wet environment, which also give them a slightly glossy appearance.

【Selected Custom Set】These furniture hardware features standardized metric thread on both the female threaded barrel nuts & the male threaded bolts, clean, accurate and neat. Once installed, they won’t easy to out of shape or slid in the process of rolling.

【Installs in An Instant】--- Making a strong joint is a Breeze. Just drill a hole larger 0.5mm than the diameter of 8mm/0.31 inch barrel nuts caps, then these set easily installs with the included a hex key. Give them a try.

【Multipurpose Hardware】 No matter if you need it for DIY furniture project or as a replacement parts, our product will be your best helper. They are not only widely used in furniture like cribs, bed frame, chairs, cabinets,bookcases, wardrobes, workbench, ect, but also fit for all kinds of art and leather crafts and DIY clothing production, such as thin albums, decorative bags, leather belts, sandals, boots, leather bags binding and more.

Mromax M6 Binding Screws, M6 X 25Mm Carbon Steel Binding Screws And Rivet Socket Cap Connecting For Binding Baby Bed Furniture, Diy Leather, Scrapbook And Photo Albums 10Pcs

MROMAX
MRO190822S-0152
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MroMax® 9.85

Features

【Dimension】Screw Thread Specification: M6 x 25mm; Cap Nut Thread Specification: M6; Length Under Nut Head : 15mm/0.59"; Nut Head Diameter: 12.8mm/0.5"; Nut Aperture: 8mm/0.31"; Groove Type: 4mm/0.16".

【Good Quality】Made of quality carbon steel material,spraying treatment,sturdy and anti-rust, easy to bind, install and remove, can use repeatedly, good tightness.

【Easy to Use】Easily applied with standard screwdriver. Threaded post lets you open and re-attach piece where needed.

【Instructions】Make a hole larger than 0.5mm than the diameter of the nut rod, put screws and nuts on both sides of the locked object, and select the appropriate tool to lock it.

【Wide Application】Especially suit for leather handicrafts decoration, bookbinding, document, book, album, DIY crafts, etc.

Mromax M6 Binding Screws, M6 X 45Mm Stainless Steel Binding Screws And Rivet Socket Cap Connecting For Binding Baby Bed Furniture, Diy Leather, Scrapbook And Photo Albums 5Pcs

MROMAX
MRO190822S-0136
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MroMax® 9.85

Features

【Dimension】Screw Thread Specification: M6 x 45mm; Cap Nut Thread Specification: M6; Length Under Nut Head : 20mm/0.79"; Nut Head Diameter: 12.8mm/0.5"; Nut Aperture: 8mm/0.31"; Groove Type: 4mm/0.16".

【Good Quality】-Made of quality stainless steel material,sturdy and anti-rust, easy to bind, install and remove, can use repeatedly, good tightness.

【Easy to Use】Easily applied with standard screwdriver. Threaded post lets you open and re-attach piece where needed.

【Instructions】Make a hole larger than 0.5mm than the diameter of the nut rod, put screws and nuts on both sides of the locked object, and select the appropriate tool to lock it.

【Wide Application】Especially suit for leather handicrafts decoration, bookbinding, document, book, album, DIY crafts, etc.

Mromax M6 Binding Screws, M6 X 35Mm Stainless Steel Binding Screws And Rivet Socket Cap Connecting For Binding Baby Bed Furniture, Diy Leather, Scrapbook And Photo Albums 5Pcs

MROMAX
MRO190822S-0129
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MroMax® 9.85

Features

【Dimension】Screw Thread Specification: M6 x 35mm; Cap Nut Thread Specification: M6; Length Under Nut Head : 12mm/0.47"; Nut Head Diameter: 12.8mm/0.5"; Nut Aperture: 8mm/0.31"; Groove Type: 4mm/0.16".

【Good Quality】-Made of quality stainless steel material,sturdy and anti-rust, easy to bind, install and remove, can use repeatedly, good tightness.

【Easy to Use】Easily applied with standard screwdriver. Threaded post lets you open and re-attach piece where needed.

【Instructions】Make a hole larger than 0.5mm than the diameter of the nut rod, put screws and nuts on both sides of the locked object, and select the appropriate tool to lock it.

【Wide Application】Especially suit for leather handicrafts decoration, bookbinding, document, book, album, DIY crafts, etc.

#TOP13
Best For Zinc

Mromax M6 Binding Screws, M6 X 20Mm Zinc Plated Carbon Steel Binding Screws And Rivet Socket Cap Connecting For Binding Baby Bed Furniture, Diy Leather, Scrapbook And Photo Albums 10Pcs

MROMAX
MRO190822S-0145
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MroMax® 9.85

Features

【Dimension】Screw Thread Specification: M6 x 20mm; Cap Nut Thread Specification: M6; Length Under Nut Head : 15mm/0.59"; Nut Head Diameter: 12.8mm/0.5"; Nut Aperture: 8mm/0.31"; Groove Type: 4mm/0.16".

【Good Quality】-Made of quality carbon steel material, zinc plated surface, sturdy and anti-rust, easy to bind, install and remove, can use repeatedly, good tightness.

【Easy to Use】Easily applied with standard screwdriver. Threaded post lets you open and re-attach piece where needed.

【Instructions】Make a hole larger than 0.5mm than the diameter of the nut rod, put screws and nuts on both sides of the locked object, and select the appropriate tool to lock it.

【Wide Application】Especially suit for leather handicrafts decoration, bookbinding, document, book, album, DIY crafts, etc.

Top 10 socket cap screws Brands on Amazon

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

Brand Count
Swpeet 5
Mromax 4
Mardatt 2
Mewudecor 1
Rustark 1

Top 10 socket cap screws Brands Pie Chart


We've carried out a comprehensive analysis of 1,418 reviews on socket cap screws, using our selection criteria to identify the best options in the categories. Our findings reveal that most customers typically select socket cap screws priced around $10.76, with top brands including and

Our team of expert editors reviewed these high-quality items and handpicked the top 13 socket cap screws for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the categories category. These include and .

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