{"id":2515,"date":"2026-03-13T12:50:22","date_gmt":"2026-03-13T04:50:22","guid":{"rendered":"https:\/\/machinedwasher.com\/?post_type=product&p=2515"},"modified":"2026-03-13T12:58:11","modified_gmt":"2026-03-13T04:58:11","slug":"stainless-carriage-bolts","status":"publish","type":"product","link":"https:\/\/machinedwasher.com\/hi\/products\/stainless-carriage-bolts\/","title":{"rendered":"Stainless Carriage Bolts Size Black Galvanized Carriage Bolt Brass Carriage Bolts"},"content":{"rendered":"

Stainless Carriage Bolts Size Black Galvanized Carriage Bolt Brass Carriage Bolts<\/p>\n

What Are Carriage Bolts?<\/h3>\n

Carriage bolts (also known as coach bolts ) are a type of fastener with a smooth, domed head and a square neck beneath the head. They are designed to prevent rotation when tightened, making them ideal for wood-to-metal or wood-to-wood connections.<\/p>\n

Materials of Carriage Bolts<\/h3>\n

Carriage bolts are made from various materials depending on strength and environmental needs:<\/p>\n

\"\"<\/p>\n

Surface Finishes<\/h3>\n

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Specifications & Types<\/h3>\n

Carriage bolts are categorized by head type, thread, and length :<\/p>\n

A. Standard Carriage Bolt (ASTM A307 \/ DIN 603)
\nHead: Smooth, rounded dome
\nNeck: Square section under the head (prevents spinning)
\nThread: Partially or fully threaded
\nSizes:
\nDiameter: 1\/4″ to 3\/4″ (imperial), M6 to M20 (metric)
\nLength: 1\/2″ to 12″ (varies by application)<\/p>\n

B. Heavy-Duty Carriage Bolt
\nMaterial: Grade 5 or 8 carbon steel
\nUsed in: Structural applications (e.g., timber framing)<\/p>\n

C. Stainless Steel Carriage Bolt
\nMaterial: 304 or 316 stainless steel
\nUsed in: Marine, food processing, chemical industries<\/p>\n

Applications<\/h3>\n

Wood Construction: Decking, fencing, timber framing
\nFurniture Assembly: Bed frames, wooden benches
\nAgriculture & Trailers: Securing wooden planks to metal frames
\nMarine & Outdoor: Dock construction, boat fittings (stainless steel)
\nPlayground Equipment: Safe, smooth-head design reduces injury risk<\/p>\n

Case Examples<\/h3>\n

Deck Building: Hot-dip galvanized 1\/2″ x 4″ carriage bolts secure wooden beams to metal brackets.
\nFarm Fencing: Zinc-plated 3\/8″ x 6″ carriage bolts attach wooden fence posts to rails.
\nBoat Dock: 316 stainless steel 5\/16″ x 3″ carriage bolts fasten wooden planks to steel pilings.<\/p>\n

Safety & Installation Tips<\/h3>\n

\u2714 Pre-drill holes in wood to prevent splitting.
\n\u2714 Ensure the square neck is fully seated to prevent rotation.
\n\u2714 Use washers under the nut for better load distribution.<\/p>\n

\"\"<\/p>","protected":false},"excerpt":{"rendered":"

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