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 8

Approved Vendor 5/8-11x3-1/2" Grade 5 Round Head Square Neck Carriage Bolts Zinc SKU 26198 $4.58
Approved Vendor 5/8-11x3-1/2" Grade 8 #3 Dome Head Plow Bolts Plain SKU 26199 $6.50
Approved Vendor 5/8-11x3-1/2" Grade 8 Round Head Square Neck Full Thread Carriage Bolts Plain SKU 26201 $5.81
Approved Vendor 5/8-11x4" #3 Flat Round Head Grade 5 Plow Bolts Zinc SKU 32 $6.72
Approved Vendor 5/8-11x4" Grade 5 Round Head Square Neck Carriage Bolts Zinc SKU 26223 $4.97
Approved Vendor 5/8-11x4" Grade 8 #3 Dome Head Plow Bolts Plain SKU 26224 $7.04
Approved Vendor 5/8-11x4" Grade 8 Round Head Square Neck Full Thread Carriage Bolts Plain SKU 26226 $6.31
Approved Vendor 5/8-11x4-1/2" Grade 5 Round Head Square Neck Carriage Bolts Zinc SKU 26231 $5.39
Approved Vendor 5/8-11x4-1/2" Grade 8 #3 Dome Head Plow Bolts Plain SKU 26232 $8.50
Approved Vendor 5/8-11x5" Grade 5 Round Head Square Neck Carriage Bolts Zinc SKU 26245 $5.79
Approved Vendor 5/8-11x5" Grade 8 #3 Dome Head Plow Bolts Plain SKU 26246 $9.87
Approved Vendor 7/16-14x1" #3 Flat Round Head Grade 5 Plow Bolts Zinc SKU 9 $0.98
Approved Vendor 7/16-14x1-1/2" #3 Flat Round Head Grade 5 Plow Bolts Zinc SKU 11 $1.34
Approved Vendor 7/16-14x1-1/2" Grade 5 Clipped Head Plow Bolts Plain & Oil SKU 28955 $2.19
Approved Vendor 7/16-14x1-1/4" #3 Flat Round Head Grade 5 Plow Bolts Zinc SKU 10 $1.23
Approved Vendor 7/16-14x1-3/4" #3 Flat Round Head Grade 5 Plow Bolts Zinc SKU 12 $1.51
Approved Vendor 7/16-14x2" #3 Flat Round Head Grade 5 Plow Bolts Zinc SKU 13 $1.63
Approved Vendor 7/16-14x2-1/2" #3 Flat Round Head Grade 5 Plow Bolts Zinc SKU 15 $2.01
Approved Vendor 7/16-14x2-1/4" #3 Flat Round Head Grade 5 Plow Bolts Zinc SKU 14 $1.86
Approved Vendor 7/16-14x3" #3 Flat Round Head Grade 5 Plow Bolts Zinc SKU 16 $2.41
Approved Vendor 7/16-20x1-1/2" Grade 5 Elliptical Head Plow Bolts Zinc SKU 30620 $1.81
Approved Vendor 7/16-20x1-1/4" Grade 5 Elliptical Head Plow Bolts Zinc SKU 30619 $1.88
Approved Vendor 7/16-20x1-3/4" Grade 5 Elliptical Head Plow Bolts Zinc SKU 28954 $2.12
Approved Vendor 7/16-20x1-7/8" Grade 5 Elliptical Head Plow Bolts Zinc SKU 30621 $2.40
Approved Vendor 7/16-20x2-1/2" Grade 5 Elliptical Head Plow Bolts Zinc SKU 30622 $3.04
Approved Vendor 7/8"-9x4" Square Head Bolts Grade A307 Zinc Clear SKU 28951 $16.16
Approved Vendor 7/8"-9x5" Square Head Bolts Grade A307 Zinc Clear SKU 28950 $13.50
Approved Vendor 7/8"-9x5-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 28949 $18.48
Approved Vendor 7/8"-9x9" Square Head Bolts Grade A307 Hot Dip Galvanized SKU 28948 $28.75
Approved Vendor M10-1.5x80 Class 4.6 Round Head Carriage Bolts Zinc SKU 28881 $2.48
Approved Vendor M16-2.0x50 Class 4.6 Round Head Carriage Bolts Zinc SKU 28880 $5.09
Approved Vendor M16-2.0x60 Class 4.6 Round Head Carriage Bolts Zinc SKU 28879 $5.63
Approved Vendor M6-1.0x20 Class 4.6 Round Head Carriage Bolts Zinc SKU 28885 $0.33
Approved Vendor M6-1.0x30 Class 4.6 Round Head Carriage Bolts Zinc SKU 28884 $0.48
Approved Vendor M6-1.0x50 Class 4.6 Round Head Carriage Bolts Zinc SKU 28883 $0.69
Approved Vendor M8-1.25x20 Class 4.6 Round Head Carriage Bolts Zinc SKU 27335 $0.71
Approved Vendor M8-1.25x30 Class 4.6 Round Head Carriage Bolts Zinc SKU 27291 $0.83
Approved Vendor M8-1.25x45 Class 4.6 Round Head Carriage Bolts Zinc SKU 28882 $0.89

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