Best Nut & Bolt Assortment Sets (2026 Guide)
We selected sets with the highest combined user rating and review volume that offer clear size/grade information, organized storage, and relevance to common tool and industrial tasks
The Verdict
- Best Overall: Nut & Bolt Gauge Set - Inch & Metric, Original Version — Best for thread ID: compact inch/metric thread-checker set that helps quickly identify bolt and nut sizes
- Best Value: Grade 5 shear bolts 1/2 x 3-1/2 in with nylock nuts (12-pack) — Best for rotary cutter replacements: Grade 5 shear bolts with nyloc nuts sized for heavy-duty cutter fastenings
This roundup covers top-rated nut and bolt assortment sets and thread-checker gauges for DIYers, shops, and light industrial use, selected by aggregated rating and review volume. Picks prioritize broad size coverage, material grade, and organizer quality to help you match sets to common repair and fabrication tasks
Top Picks
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1
Best Overall Nut & Bolt Gauge Set - Inch & Metric, Original Version
Best for thread ID: compact inch/metric thread-checker set that helps quickly identify bolt and nut sizes
Nut & bolt checker with 26 male/female gauges in inch and metric. Features stamped sizes, color-coded gauges, and rotating wire-cable for quick verification. Customers note high quality and ease of use
- 26 gauges per set
- Size stamping on gauges
- Rotating wire-cable design
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2
Jackson Palmer hardware assortment kit (2,251 pieces, 62 sizes) with screws, nuts, bolts & washers
Best for bulk variety: large 2,251-piece hardware assortment that covers many screw and bolt sizes for general repairs
A multi-size hardware set with 2,251 pieces across 62 sizes, including screws, bolts, nuts, and washers. Highly regarded for variety and organization, though container locking and durability feedback vary
- large piece count across categories
- multiple size ranges (Screws, Bolts, Nuts, Washers)
- built-for-work grade hardware
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3
Best Value Grade 5 shear bolts 1/2 x 3-1/2 in with nylock nuts (12-pack)
Best for rotary cutter replacements: Grade 5 shear bolts with nyloc nuts sized for heavy-duty cutter fastenings
Grade 5 SAE shear bolts with Nylock nuts for rotary cutters; zinc finish resists corrosion. Kit includes 12 bolts and 12 nylon locknuts for universal 1/2 in diameter, 3-1/2 in length. Customers note strong, well-fitting hardware with solid value
- Grade 5 hardened steel
- Nylock nuts prevent loosening
- RoHS compliant zinc finish
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4
Grade 2 shear bolts for rotary cutters 1/2 in x 3-1/2 in with nyloc nuts
Best for standard cutter spares: Grade 2 shear bolts with nyloc nuts designed for rotary cutter applications
Grade 2 SAE J429 shear bolts with nyloc nuts in a 12-pack. Provides vibration-resistant fastening for rotary cutters; compatible with common models. Customers note good strength and fit in 5-foot cutters
- nyloc nuts prevent loosening
- universal 1/2 in diameter
- includes bolts and nuts in 12-pack
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5
Rok #1/4-20 x 3-1/2" Miter Draw Bolt Connector (30 Pack)
Best for cabinetry and countertops: Miter draw-bolt connectors in a multi-pack for secure countertop joins
Countertop draw bolts for invisible connectors with routing. Durable steel construction; reusable and demountable for easy adjustments. Customers note precise fit and good value for money
- reusable/demountable design
- heavy-duty steel construction
- fits 1/4" diameter, 3-1/2" length
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6
FOLIV metric bolt assortment kit, 907pcs grade 8.8 hardware set
Best metric grade-8 kit: 907-piece metric bolt assortment in grade 8.8 covering common M4–M8 sizes
Metric bolt and nut kit with M4–M8 sizes in yellow zinc plating. Includes organized storage and a variety of sizes for versatile fastening needs. Customers note good quality and comprehensive size range
- large assortment of metric sizes
- heavy-duty grade 8.8 alloy steel
- yellow zinc plating for corrosion resistance
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7
1/2 x 8 inch carriage bolt kit with nuts & washers
Best for outdoor projects: large carriage bolt kit with nuts and washers, designed for deck and exterior assembly
Carriage bolt kit includes 12 bolts, 12 washers, and 12 nuts for heavy-duty projects. Durable, rust-resistant hardware suitable for decks, pergolas, and gazebos. Customers note good quality and value for money
- 12 bolts, 12 washers, 12 nuts
- rust-resistant construction
- 1/2-13 diameter
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8
FOLIV 523PCS Grade 8 Bolts and Nuts Assortment Kit
Best heavy-grade assortment: 523-piece grade 8 bolt and nut kit for demanding mechanical and structural uses
Grade 8 bolt and nut assortment in a double-sided case. Includes 1/4-20, 5/16-18, 3/8-16 SAE bolts; lengths from 1/2" to 1-1/2". Customers note good quality and comprehensive size variety
- Grade 8 alloy steel construction
- comprehensive SAE size assortment
- organized storage case
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9
Nut and Bolt Thread Checker - 44 Gauge Set, SAE & Metric
Best compact gauge set: 44-gauge SAE and metric thread checker for precise thread identification in the shop
Nut and bolt gauge set for identifying thread size with 44 male/female gauges. Includes SAE/inch and metric sizing for versatile use. Customers note high quality and ease of use, with good storage capacity
- 44 gauges for both male and female threads
- standard SAE and metric sizing
- compact and organized storage
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10
FOLIV 566Pcs Heavy Duty Bolts & Nuts Assortment Kit
Best heavy-duty variety: 566-piece assorted bolts and nuts in grade-8 steel for robust repair and fabrication work
A Grade 8 alloy steel bolt and nut assortment with SAE sizes 1/4-20, 5/16-18, 3/8-16. Includes a double-sided case for organized storage. Customers note good quality and comprehensive size variety
- grade 8 alloy steel
- SAE size assortment
- double-sided storage case