Best Carriage Bolts Under $200 (2026)
We ranked products by material/coating, kit completeness (nuts/washers), thread and length variety, customer value score, and price under $200
The Verdict
- Best Overall: Zonon Stainless Steel Carriage Bolts Kit (50 pcs) with Nuts & Washers — Best stainless kit for corrosion resistance: a 50-piece set with nuts and washers ideal for outdoor use and hardware stores
- Best Value: 1/2 in. x 3-1/2 in. Carriage Bolt Kit, ceramic black ruspert coating — Best rust-resistant exterior option: half-inch diameter with ceramic black ruspert coating suited to visible deck hardware
Top Picks
-
1
Best Overall Zonon Stainless Steel Carriage Bolts Kit (50 pcs) with Nuts & Washers
Best stainless kit for corrosion resistance: a 50-piece set with nuts and washers ideal for outdoor use and hardware stores
A versatile kit of stainless steel carriage bolts, hex nuts, and flat washers in 5/16-18 size. Includes 50 bolts, 50 nuts, and 50 washers for a complete fastener set. Customers note solid construction and good fit
- all-in-one fastener kit
- stainless steel for corrosion resistance
- precise 5/16-18 thread
-
2
Best Value 1/2 in. x 3-1/2 in. Carriage Bolt Kit, ceramic black ruspert coating
Best rust-resistant exterior option: half-inch diameter with ceramic black ruspert coating suited to visible deck hardware
Carriage bolt kit includes 12 bolts, 12 washers, and 12 nuts with a 5-layer ceramic black ruspert coating for rust resistance. Suitable for exterior use and heavy-duty projects like decks and gazebos. Customer notes emphasize quality and value for money
- rust-resistant coating
- complete bolt-kit (bolts, washers, nuts)
- semiflush flat head design
-
3
1/2 in x 4 in Carriage Bolt Kit (12 bolts, 12 washers, 12 nuts) ceramic black ruspert coated
Best longer half-inch option: 4-inch black coated bolts with matching washers and nuts for deep structural connections
Carriage bolt kit with ceramic black ruspert coating for exterior use. Includes 12 bolts, 12 washers, and 12 hex nuts; designed for rust resistance and durability. Customers note good build quality and value for money
- rust-resistant coating
- complete kit with nuts and washers
- suitable for exterior lumber
-
4
3/8 x 2 in galvanized carriage bolt kit (50 pcs) by Makers Bolt
Best galvanized mid-size kit: 3/8-inch, 2-inch bolts in a 50-piece set tailored to deck-building and outdoor framing
Galvanized carriage bolts kit includes bolts, washers, and nuts for exterior projects. Semi-flush flat head aids decking and pergola work; corrosion-resistant coating enhances durability. Customers note good quality and value for money, with mixed feedback on washers
- complete hardware kit
- corrosion-resistant coating
- flat head for semi-flush finish
-
5
1/2 in x 5 in black carriage bolt kit (12 bolts, 12 washers, 12 nuts)
Best extra-long black carriage bolts: 5-inch half-inch bolts with washers and nuts for tall or layered assemblies
Carriage bolt kit with ceramic black ruspert coating for exterior use. Includes 12 bolts, 12 washers, and 12 hex nuts; rust resistance is noted as 2X that of galvanized. Customers cite solid build and good value, with usefulness for pergolas and decks
- ruspert-coated rust resistance
- includes complete hardware set
- semi-flush flat head design
-
6
Galvanized carriage bolt kit 1/4" x 1" (100 pk) with washers and nuts
Best small galvanized bulk pack: 1/4-inch by 1-inch 100-piece kit that covers numerous light fastening tasks
Galvanized 1/4" carriage bolt kit includes 100 bolts, 100 USS washers, and 100 hex nuts. Hot dip galvanized for exterior use; provides semi-flush flat head for decks and outdoor projects. Customer note: high quality and good value
- galvanized exterior-grade
- includes bolts, washers, nuts
- flat head delivers semi-flush finish
-
7
1/2 in x 6 in Carriage Bolt Kit with 12 bolts, washers & nuts
Best longest-length half-inch kit: 6-inch bolts with washers and nuts for deep laminations and heavy exterior joins
Ceramic black ruspert coated carriage bolts kit for exterior use. Includes 12 bolts, 12 washers, and 12 nuts; provides rust resistance and semi-flush flat head for decks and pergolas. Customer note: good quality and value for money
- rust-resistant coating
- includes full hardware kit
- semi-flush head for finished look
-
8
1/4 in x 1-1/2 in galvanized carriage bolt kit (100 pcs)
Best 1/4-inch mid-length galvanized kit: 1-1/2-inch 100-piece option for repetitive exterior wood fastening
Galvanized carriage bolt kit includes 100 bolts, 100 washers, and 100 hex nuts. Hot-dip galvanized for exterior use and corrosion resistance; suitable for decks and outdoor structures. Customer: great quality and value for money
- 100 pcs bolts, washers, nuts
- hot-dip galvanized for exterior durability
- meets ASME/ASTM standards
-
9
Hillman galvanized carriage bolts 1/4 x 6, 100 ct
galvanized bulk for long lengths: 1/4 by 6-inch 100-count suited to wood-to-metal connections
Carriage bolts for fastening wood to wood or wood to metal with a semi-flush flat head. Self-locking square underside reduces need for a driving tool; galvanized finish resists rust. Customer insight notes good quality and value, with mixed views on thread quality
- rust-resistant galvanized finish
- self-locking square underside
- no washer needed
-
10
1/4 in x 2-1/2 in galvanized carriage bolt kit (100 pcs) with nuts & washers
Best high-rated galvanized kit: 1/4 by 2-1/2-inch 100-piece set with nuts and washers for deck assembly
Galvanized carriage bolt kit includes 100 bolts, 100 washers, and 100 hex nuts. Provides corrosion resistance for exterior use; flat head for semi-flush finish. One customer note highlights quality and value for money
- complete hardware kit
- hot-dip galvanized coating
- meets industry standards