Best Screw & Bolt Assortment Sets Under $50 (2026)
We scored sets by component variety, part count per dollar, material grade and finish, inclusion of nuts/washers, and applicability (metric/SAE) for common tasks
The Verdict
- Best Overall: Kadrick metric flange bolt set 700Pcs M6-M10 — Best for flange bolt needs: metric M6–M10 selection with nuts and washers and a high part count for assembly work
- Best Value: Machine Screws Assortment Kit with hex socket bolts — Best for machine-screw projects: focused hex-socket machine screw assortment for precision assemblies and repair
This roundup covers versatile screw and bolt assortment sets under $50, focused on value, material grade, and component variety for DIY, workshop, and light industrial use. Picks were chosen by weighting part counts, metric/SAE coverage, material grade (8.8 where listed), and included nuts/washers to maximize utility per dollar
Top Picks
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1
Best Overall Kadrick metric flange bolt set 700Pcs M6-M10
Best for flange bolt needs: metric M6–M10 selection with nuts and washers and a high part count for assembly work
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 broad coverage: large 2300-piece mix of SAE and metric fasteners suited to diverse household and workshop tasks
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-screw projects: focused hex-socket machine screw assortment for precision assemblies and repair
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 and sheath makers: compact kit of screws and spacers specifically tailored for Kydex and knife-sheath work
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 hardware: M6–M12 range with nuts and washers for heavier repairs and maintenance
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 mid-range metric kit: M4–M8 assortment with nuts and washers balanced for common repair and DIY tasks
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
268Pcs Metric Bolt Assortment Kit with Nuts and Washers
compact set: smaller 268-piece metric bolt kit with flange bolts, nuts, and washers for basic projects
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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8
Grade 8.8 bolt and nut kit (940pcs) M4-M8 hex bolts nuts
Best for strength-focused tasks: Grade 8.8 M4–M8 hex bolts and nuts targeted at higher-tensile applications
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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9
Metric bolt assortment: M6/M8/M10/M12, 175 sets, grade 8.8
Best for standardized grade kits: metric M6–M12 assortment in grade 8.8 with a yellow-zinc finish for corrosion resistance
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
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10
Kadrick 700Pcs Flange Bolt & Nut Set (M6/M8/M10) 8.8 grade
Best flange bolt combo: 700-piece set of M6–M10 flange bolts and nuts in grade 8.8 for secure fastening
Comprehensive flange bolt, nut, and washer assortment with 700 pieces across bolts, nuts, and washers. Provides variety and value for common fastener needs; customers note good quality and functionality, with some storage and durability mixed feedback
- includes 175 pieces each category
- assorted metric sizes M6, M8, M10
- eco-friendly zinc plating