Best Screw & Bolt Assortment Sets Under $100 (2026)
Selections were ranked by a value score combining piece composition, material/grade, organizer quality, and price under $100
The Verdict
- Best Overall: Kadrick metric flange bolt set 700Pcs M6-M10 — Best for flange bolts: a 700-piece metric kit focused on M6–M10 flange bolts with nuts and washers for mechanical assemblies
- Best Value: Machine Screws Assortment Kit with hex socket bolts — Best for machine screws: compact machine-screw and hex-socket assortment suited to electronics and precision assembly tasks
This roundup covers versatile screw and bolt assortment sets under $100, focused on metric and SAE fasteners, flange and hex options, and kits that include nuts and washers. Picks were chosen by value score using item composition (piece count, grade and material), organizer quality, and usefulness for common shop, automotive, and DIY tasks
Top Picks
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1
Best Overall Kadrick metric flange bolt set 700Pcs M6-M10
Best for flange bolts: a 700-piece metric kit focused on M6–M10 flange bolts with nuts and washers for mechanical assemblies
Comprehensive set of flange bolts, nuts, and washers totaling 700 pieces in metric sizes. Includes 175 bolts, 175 nuts, and 175 washers per size group, with black zinc plating for durability. Customers note good quality and handy case, with some mixed feedback on quantity
- comprehensive 700-piece set
- metric M6-M10 range
- case for organization
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2
2300-piece hardware assortment kit with SAE & metric fasteners
Best for variety: a 2300-piece SAE and metric hardware kit offering broad coverage for general repairs and maintenance
Comprehensive hardware kit with SAE and metric fasteners, nuts, bolts, and washers in a compact 3-tray set. Customers value its variety and ease of storage for DIY repairs
- SAE and metric coverage
- extensive assortment in 3 trays
- quality and variety cited by customers
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3
Best Value Machine Screws Assortment Kit with hex socket bolts
Best for machine screws: compact machine-screw and hex-socket assortment suited to electronics and precision assembly tasks
Screws assortment including SAE & metric sizes with hex socket button head. Useful for multiple builds and drone motors, offering good variety and value
- mixed metric and SAE sizes
- high-strength 10.9 steel
- comprehensive hex socket bolt kit
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4
Holster making kit: screws & spacers (130pc) for kydex/knife sheaths
Best for holster makers: a focused 130-piece kit with screws and spacers tailored for kydex and knife sheath fabrication
Holster making kit with assorted screws and spacers for kydex and leather holsters. Includes 130 pieces with organized packaging, offering variety in sizes. Customer insight notes useful for knife sheath projects and neat organization
- 130 pcs total
- screw & spacer assortment
- black oxide coated steel
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5
M6-M12 metric bolts and nuts set with washers
Best for larger metric sizes: M6–M12 bolt, nut, and washer set that supports heavier-duty fastening needs
Metric bolts and nuts assortment with M6 to M12 threads and washers. Includes variety of lengths and a universal socket tool for quick fittings. Customers note high quality and good value for a range of projects
- wide size range
- quality construction
- includes necessary hardware
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6
Mywish metric bolt assortment kit (M4–M8) with nuts and washers
Best compact metric kit: M4–M8 bolt assortment with nuts and washers that balances size range and portability
Metric bolt assortment kit with bolts, nuts, and washers in sizes M4–M8. Includes varied threads and stainless steel construction for durability; users note its usefulness for 3D printing projects and value for money
- variety of metric sizes
- nuts and washers included
- durable metal construction
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7
YEEZET stainless steel bolt & nut kit, 245 pcs, M6/M8/M10
Best for corrosion resistance: stainless steel M6/M8/M10 bolt and nut kit designed for rust-prone environments
Stainless steel 304 heavy duty flanged bolts and nuts kit with 245 pieces in common sizes. Durable, corrosion resistant and suitable for engine-related projects. Customers note good quality and solid value
- 304 stainless steel for durability
- heavy duty flanged design
- includes 245 pieces in common sizes
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8
268Pcs Metric Bolt Assortment Kit with Nuts and Washers
Best budget bolt kit: 268-piece metric assortment focused on essential flange bolts with nuts and washers
A 268-piece flange hex bolt, nut, and washer set in M5/M6/M8 with yellow zinc plating. Durable alloy steel construction for outdoor use and DIY projects. Customer insight notes varied specifications to fit diverse needs
- 268-piece kit
- grade 8.8 alloy bolts
- M5/M6/M8 assortment
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9
Grade 8.8 bolt and nut kit (940pcs) M4-M8 hex bolts nuts
Best for strength-sensitive work: Grade 8.8 M4–M8 hex bolt and nut kit providing higher tensile capability
Metric bolt and nut kit with 940 pieces in 18 sizes. Includes M4-M8 hex bolts and corresponding nuts for various projects. Customers note good quality and value for money
- includes 18 practical sizes
- heavy duty metric bolts and nuts
- yellow zinc plated finish
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10
Metric bolt assortment: M6/M8/M10/M12, 175 sets, grade 8.8
Best grade 8.8 metric assortment: sets of M6–M12 bolts in grade 8.8 with zinc finish for durable general-purpose fastening
Metric bolt and nut kit with 175 sets in 4 sizes, grade 8.8 alloy steel with yellow zinc coating for corrosion resistance. Includes lock and flat washers for reliability and durability
- grade 8.8 alloy steel
- yellow zinc coating
- includes washers