Carriage & Specialty Bolts

300+ products

Expected delivery: Wed, Nov 18

Carriage and specialty bolts solve fastening jobs that a standard hex bolt cannot. Carriage bolts have a smooth domed head with a square neck that locks into wood or a square hole, so they tighten from the nut side only. This section also covers plow bolts for cutting edges, elevator bolts for conveyor belting, U-bolts for pipe and truck springs, J-bolts and L-bolts for anchoring, hex flange bolts, and shoulder bolts.

What to check before you order

Head and neck. Carriage bolts need a snug fit at the square neck to stop them from spinning. Plow bolts need the correct head angle and neck to match the cutting edge.
U-bolt size. Measure the inside width between the legs, the inside length to the bend, and the thread size. For pipe, order by nominal pipe size.
Grade. Many carriage bolts are Grade 2 or Grade 5. Check the grade where the joint carries a real load.
Finish. Hot-dip galvanized and stainless are common for fencing, docks, decks and outdoor structures.

Common questions

Can I lift with a regular eye bolt?

Only eye bolts rated for lifting should be used for overhead lifting, and only as the manufacturer and your rigging procedures direct. Rated lifting hardware is listed under hooks, shackles and eye bolts.

Pair these with nuts and washers, or go back to fasteners.

Carriage & Specialty Bolts: page 2

Approved Vendor 1/2-13x12" Grade A Splined Timber Bolts Galvanized SKU 15248 $9.89
Approved Vendor 1/2-13x2" #3 Flat Round Head Grade 5 Plow Bolts Zinc SKU 20 $2.23
Approved Vendor 1/2-13x2" Grade 5 Round Head Square Neck Carriage Bolts Zinc SKU 15263 $1.69
Approved Vendor 1/2-13x2" Grade 8 Round Head Square Neck Full Thread Carriage Bolts Plain SKU 15267 $2.28
Approved Vendor 1/2-13x2" Stainless Steel 18-8 Carriage Bolts SKU 2152 $2.95
Approved Vendor 1/2-13x2-1/2" #3 Flat Round Head Grade 5 Plow Bolts Zinc SKU 22 $2.64
Approved Vendor 1/2-13x2-1/2" Grade 5 Round Head Square Neck Carriage Bolts Zinc SKU 15281 $2.06
Approved Vendor 1/2-13x2-1/2" Grade 8 Round Head Square Neck Full Thread Carriage Bolts Plain SKU 15285 $2.63
Approved Vendor 1/2-13x2-1/2" Stainless Steel 18-8 Carriage Bolts SKU 2153 $3.35
Approved Vendor 1/2-13x2-1/4" #3 Flat Round Head Grade 5 Plow Bolts Zinc SKU 21 $2.50
Approved Vendor 1/2-13x3" #3 Flat Round Head Grade 5 Plow Bolts Zinc SKU 23 $3.22
Approved Vendor 1/2-13x3" Grade 5 Round Head Square Neck Carriage Bolts Zinc SKU 15323 $2.36
Approved Vendor 1/2-13x3" Grade 8 Round Head Square Neck Full Thread Carriage Bolts Plain SKU 15327 $3.01
Approved Vendor 1/2-13x3" Stainless Steel 18-8 Carriage Bolts SKU 2154 $3.85
Approved Vendor 1/2-13x3-1/2" #3 Flat Round Head Grade 5 Plow Bolts Zinc SKU 24 $3.61
Approved Vendor 1/2-13x3-1/2" Grade 5 Round Head Square Neck Carriage Bolts Zinc SKU 15338 $2.57
Approved Vendor 1/2-13x3-1/2" Grade 8 Round Head Square Neck Full Thread Carriage Bolts Plain SKU 15340 $3.40
Approved Vendor 1/2-13x3-1/2" Stainless Steel 18-8 Carriage Bolts SKU 2155 $4.48
Approved Vendor 1/2-13x4" Grade 5 Round Head Square Neck Carriage Bolts Zinc SKU 15376 $2.86
Approved Vendor 1/2-13x4" Grade 8 Round Head Square Neck Full Thread Carriage Bolts Plain SKU 15378 $3.76
Approved Vendor 1/2-13x4" Stainless Steel 18-8 Carriage Bolts SKU 2156 $4.93
Approved Vendor 1/2-13x4-1/2" Grade 5 Round Head Square Neck Carriage Bolts Zinc SKU 15386 $3.52
Approved Vendor 1/2-13x4-1/2" Grade 8 Round Head Square Neck Full Thread Carriage Bolts Plain SKU 15388 $4.21
Approved Vendor 1/2-13x4-1/2" Stainless Steel 18-8 Carriage Bolts SKU 2157 $5.54
Approved Vendor 1/2-13x5" Grade 5 Round Head Square Neck Carriage Bolts Zinc SKU 15403 $3.92
Approved Vendor 1/2-13x5" Grade 8 Round Head Square Neck Full Thread Carriage Bolts Plain SKU 15405 $4.53
Approved Vendor 1/2-13x5" Stainless Steel 18-8 Carriage Bolts SKU 2158 $6.17
Approved Vendor 1/2-13x6" Grade 5 Round Head Square Neck Carriage Bolts Zinc SKU 15426 $4.61
Approved Vendor 1/2-13x6" Grade 8 Round Head Square Neck Full Thread Carriage Bolts Plain SKU 15427 $7.10
Approved Vendor 1/2-13x6" Stainless Steel 18-8 Carriage Bolts SKU 2159 $7.06
Approved Vendor 1/4"-20x1" Grade A307 Step Bolts Zinc SKU 16387 $0.73
Approved Vendor 1/4"-20x1" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 16396 $0.27
Approved Vendor 1/4"-20x1" Square Head Bolts Grade A307 Zinc Clear SKU 16397 $0.21
Approved Vendor 1/4"-20x1-1/2" Grade A307 Step Bolts Zinc SKU 16408 $0.82
Approved Vendor 1/4"-20x1-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 16414 $0.37
Approved Vendor 1/4"-20x1-1/2" Square Head Bolts Grade A307 Zinc Clear SKU 16415 $0.30
Approved Vendor 1/4"-20x1-1/4" Grade A307 Step Bolts Zinc SKU 16424 $0.77
Approved Vendor 1/4"-20x1-1/4" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 16430 $0.32
Approved Vendor 1/4"-20x1-1/4" Square Head Bolts Grade A307 Zinc Clear SKU 16431 $0.32
Approved Vendor 1/4"-20x2 3/4" Grade A307 Step Bolts Zinc SKU 16466 $1.17
Approved Vendor 1/4"-20x2" Grade A307 Step Bolts Zinc SKU 16474 $1.00
Approved Vendor 1/4"-20x2" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 16478 $0.49
Approved Vendor 1/4"-20x2" Square Head Bolts Grade A307 Zinc Clear SKU 16479 $0.40
Approved Vendor 1/4"-20x2-1/2" Grade A307 Step Bolts Zinc SKU 16482 $1.13
Approved Vendor 1/4"-20x2-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 16486 $0.60
Approved Vendor 1/4"-20x2-1/2" Square Head Bolts Grade A307 Zinc Clear SKU 16487 $0.48
Approved Vendor 1/4"-20x3" Grade A307 Step Bolts Zinc SKU 16494 $1.25
Approved Vendor 1/4"-20x3" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 16498 $0.70

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