Best Bike Screws and Bolts for Repairs and Upgrades

Whether you’re building a new bike project, performing routine maintenance, or replacing worn hardware, a reliable selection of bike screws and bolts is essential. This guide highlights five high-quality metric screw sets designed for durability, corrosion resistance, and versatile use across common cycling components. Each kit covers multiple sizes, includes washers and nuts, and arrives in organized storage for quick access.

style=”display:none;”>Summary of chosen products:

Product Brand Key Specs Links
860PCS Metric Screw Assortment Kit LuKaiSen Store M2, M3, M4, M5; 12.9 grade alloy steel; includes nuts, washers, lock washers; 8/10/16/20 mm lengths Includes 1 convenient storage box
Kadrick Metric Screw Assortment, 2000PCS Kadrick Store M2/M3/M4/M5; 10.9 grade alloy steel; lock & flat washers; standard ISO/DIN Sturdy plastic storage box included
mxuteuk Metric Screw Assortment Kit mxuteuk Store 10.9 & 12.9 grade; M2–M5; 2285 pieces; hex socket button & cap head; includes 5 hex wrenches Large kit with mixed head types
Taiss 380PCS M4 Screw Kit Taiss Store M4 screws; hex socket head; 12.9 grade alloy steel; black zinc plated Includes nuts, washers, and hex wrench
225pcs Screws And Nuts Assortment Kit Fgruh Store M4–M6; Phillips pan head; 4.8 grade galvanized; includes nuts and washers Great for indoor/outdoor fixes

LuKaiSen 860Pcs Metric Screw Assortment

LuKaiSen 860Pcs Metric Screw Assortment

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  • Designed with 12.9 grade alloy steel for high hardness and corrosion resistance in harsh environments.
  • Includes M2, M3, M4, and M5 sizes with four lengths each, plus matching nuts, washers, and lock washers.
  • Durable storage box keeps sizes organized 1:1 in separate compartments to prevent mix-ups.

Kadrick Metric Screw Assortment, 2000Pcs

Kadrick Metric Screw Assortment

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  • Includes M2, M3, M4, M5 screws with 10.9 alloy steel for strength and precise threads.
  • Specifies standard ISO/DIN measurements with consistent tolerances for reliable fit.
  • Sturdy plastic storage box keeps all sizes organized and easy to access.

mxuteuk Metric Screw Assortment Kit

mxuteuk Metric Screw Assortment Kit

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  • Offers both 10.9 and 12.9 grade alloy steel with M2–M5 sizes, including screws, nuts, washers, and five hex wrenches.
  • Large 2285-piece kit with various hex socket head and button head screws.
  • Precision manufacturing with tight tolerances suitable for long-term project use.

Taiss 380PCS M4 Screw Kit

Taiss 380PCS M4 Screw Kit

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  • Hex Socket Head Screws in M4 size with 12.9 grade alloy steel, black zinc plating for corrosion resistance.
  • Includes nuts, washers, and a hex wrench for immediate use.
  • Six sizes from M4 x 6 to M4 x 30 mm provide flexible mounting options for many bike components.

225pcs Screws And Nuts Assortment Kit

225pcs Screws And Nuts Assortment Kit

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  • Includes M4–M6 screws with various lengths, 75 bolts, 75 nuts, and 75 washers for broad compatibility.
  • Black galvanized alloy steel offers good hardness and rust resistance suitable for indoor use and light outdoor applications.
  • Versatile for mounting fixtures, electrical outlets, switches, and small hardware repairs around the home or shop.

Buying Guide

Material and Grade

Look for high-strength alloy steel options, typically 10.9 or 12.9 grades, for better wear resistance and longevity on bike components that endure vibration and exposure to moisture.

Size Range And Compatibility

Choose kits that cover common metric sizes (M2–M5) with a selection of lengths (6–30 mm). This ensures you can replace bolts across derailleurs, racks, fenders, and frame hardware without hunting for single size parts.

Head Type And Accessory Inclusion

Hex socket head and button head screws are versatile for bikes. Kits that include nuts, washers, lock washers, and a few hex wrenches provide a complete, ready-to-use solution for most repairs.

Storage And Organization

A sturdy storage box with clearly labeled compartments reduces misplacement and speeds up maintenance tasks. 1:1 sizing in compartments helps ensure you grab the correct part quickly.

Corrosion Resistance

Corrosion resistance is crucial for exterior bike components or those exposed to humidity. Zinc plating and galvanized finishes offer protection against rust in typical riding environments.

Quantity And Value

For ongoing projects or frequent maintenance, larger assortments (thousands of pieces) can be more economical per piece and reduce the need for frequent reordering.