The carriage bolts and nuts in this set are constructed of steel, and each come in a zinc-plated finish. The threading on these fasteners is 1/4
Prime-Line 1/4-20 Carriage Bolts and Nuts with Smooth, Domed Heads (12-pack) GD 52103 - The Home Depot
Prime-Line GD 52103 1/4-20 Carriage Bolts and Nuts with Smooth, Domed Heads (12 Pack) - Yahoo Shopping
Prime-Line 1/4-20 Carriage Bolts and Nuts with Smooth, Domed Heads (12-pack) GD 52103 - The Home Depot
Everbilt 1/4 in.-20 x 2-1/2 in. Stainless Steel Carriage Bolt 811806 - The Home Depot
DECKMATE Marine Grade Stainless Steel 3/8-16 X 4 in. Carriage Bolt 867280 - The Home Depot
Everbilt 1/4 in.-20 x 3-1/2 in. Zinc Plated Carriage Bolt (50-Pack) 800060 - The Home Depot
1/2-13 x 3 1/2 Carriage Bolts A307 Grade A ZINC CR+3, Fully Threaded, Size: 1/2-13, Length: 3-1/2, Head: Round, Drive: External Square, Material: Steel, Finish: Zinc (Inch) (Quantity: 25): : Industrial
Customer reviews: Prime-Line GD 52103 1/4-20 Carriage Bolts and Nuts with Smooth, Domed Heads (12 Pack)
EASTLO 1/4-20 x 2-1/2'' (1/2'' to 3'' Lengths Available) Round Domed Head Square Neck Carriage Bolt 25 PCS, 304 Stainless Steel 18-8, Grade 8.8, Full Thread, Silver,AB190108-25 : : Tools & Home Improvement
1/4-20 UNC x 1 inch Imperial Full Thread Carriage Bolts (ANSI B18.5) - 18-8 / 304 Stainless Steel: Accu.co.uk: Precision Screws
10 pcs)1/2x3 Carriage Bolts - Grade A - Zinc: : Industrial & Scientific
Prime-Line 1/4-20 Carriage Bolts and Nuts with Smooth, Domed Heads (12-pack) GD 52103 - The Home Depot
Carriage Bolt, Pan Head - Zinc - Reliable Fasteners