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.
Popular carriage & specialty bolts
- Approved Vendor #14 White Square Head Ford Nylon License Plate Nut SKU 8333 $0.88
- Approved Vendor 1/2"-13x1" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 14856 $1.52
- Approved Vendor 1/2"-13x1" Square Head Bolts Grade A307 Zinc Clear SKU 14857 $1.13
- Approved Vendor 1/2"-13x1-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 14863 $1.95
- Approved Vendor 1/2"-13x1-1/2" Square Head Bolts Grade A307 Zinc Clear SKU 14864 $1.43
- Approved Vendor 1/2"-13x1-1/4" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 14868 $1.66
- Approved Vendor 1/2"-13x1-1/4" Square Head Bolts Grade A307 Zinc Clear SKU 14869 $1.29
- Approved Vendor 1/2"-13x1-3/4" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 14873 $2.03
- Approved Vendor 1/2"-13x1-3/4" Square Head Bolts Grade A307 Zinc Clear SKU 14874 $1.50
- Approved Vendor 1/2"-13x2" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 14888 $2.05
- Approved Vendor 1/2"-13x2" Square Head Bolts Grade A307 Zinc Clear SKU 14889 $1.69
- Approved Vendor 1/2"-13x2-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 14895 $1.91
- Approved Vendor 1/2"-13x2-1/2" Square Head Bolts Grade A307 Zinc Clear SKU 14896 $2.05
- Approved Vendor 1/2"-13x2-1/4" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 14898 $2.37
- Approved Vendor 1/2"-13x2-1/4" Square Head Bolts Grade A307 Zinc Clear SKU 14899 $2.81
- Approved Vendor 1/2"-13x3" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 14909 $2.95
- Approved Vendor 1/2"-13x3" Square Head Bolts Grade A307 Zinc Clear SKU 14910 $2.60
- Approved Vendor 1/2"-13x3-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 14915 $3.59
- Approved Vendor 1/2"-13x3-1/2" Square Head Bolts Grade A307 Zinc Clear SKU 14916 $2.71
- Approved Vendor 1/2"-13x4" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 14925 $4.12
- Approved Vendor 1/2"-13x4" Square Head Bolts Grade A307 Zinc Clear SKU 14926 $3.03
- Approved Vendor 1/2"-13x4-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 14929 $4.37
- Approved Vendor 1/2"-13x4-1/2" Square Head Bolts Grade A307 Zinc Clear SKU 14930 $3.42
- Approved Vendor 1/2"-13x5" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 14934 $5.57
- Approved Vendor 1/2"-13x5" Square Head Bolts Grade A307 Zinc Clear SKU 14935 $3.75
- Approved Vendor 1/2"-13x5-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 14937 $5.18
- Approved Vendor 1/2"-13x5-1/2" Square Head Bolts Grade A307 Zinc Clear SKU 14938 $4.08
- Approved Vendor 1/2"-13x6" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 14943 $5.91
- Approved Vendor 1/2"-13x6" Square Head Bolts Grade A307 Zinc Clear SKU 14944 $4.40
- Approved Vendor 1/2"-13x7" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 14945 $6.83
- Approved Vendor 1/2"-13x7" Square Head Bolts Grade A307 Zinc Clear SKU 14946 $5.37
- Approved Vendor 1/2"-13x8" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 14950 $7.61
- Approved Vendor 1/2"-13x8" Square Head Bolts Grade A307 Zinc Clear SKU 14951 $6.10
- Approved Vendor 1/2-13x1" Grade 5 Round Head Square Neck Carriage Bolts Zinc SKU 15175 $1.40
- Approved Vendor 1/2-13x1" Stainless Steel 18-8 Carriage Bolts SKU 2148 $2.02
- Approved Vendor 1/2-13x1-1/2" #3 Flat Round Head Grade 5 Plow Bolts Zinc SKU 18 $1.91
- Approved Vendor 1/2-13x1-1/2" Grade 5 Clipped Head Plow Bolts Plain & Oil SKU 15194 $2.26
- Approved Vendor 1/2-13x1-1/2" Grade 5 Clipped Head Plow Bolts Zinc SKU 15195 $2.31
- Approved Vendor 1/2-13x1-1/2" Grade 5 Round Head Square Neck Carriage Bolts Zinc SKU 15197 $1.39
- Approved Vendor 1/2-13x1-1/2" Stainless Steel 18-8 Carriage Bolts SKU 2150 $2.43
- Approved Vendor 1/2-13x1-1/4" #3 Flat Round Head Grade 5 Plow Bolts Zinc SKU 17 $1.66
- Approved Vendor 1/2-13x1-1/4" Grade 5 Clipped Head Plow Bolts Plain & Oil SKU 15210 $1.98
- Approved Vendor 1/2-13x1-1/4" Grade 5 Clipped Head Plow Bolts Zinc SKU 15211 $2.10
- Approved Vendor 1/2-13x1-1/4" Grade 5 Round Head Square Neck Carriage Bolts Zinc SKU 15213 $1.34
- Approved Vendor 1/2-13x1-1/4" Stainless Steel 18-8 Carriage Bolts SKU 2149 $2.29
- Approved Vendor 1/2-13x1-3/4" #3 Flat Round Head Grade 5 Plow Bolts Zinc SKU 19 $2.08
- Approved Vendor 1/2-13x1-3/4" Grade 5 Round Head Square Neck Carriage Bolts Zinc SKU 15233 $1.55
- Approved Vendor 1/2-13x1-3/4" Stainless Steel 18-8 Carriage Bolts SKU 2151 $2.62