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DIN 603 Carriage Bolt

DIN 603 Carriage Bolts are round head bolts with external machine screw threads and an underhead square neck that helps prevent bolt rotation as the nut is tightened. The head is sometimes referred to as a mushroom head because of its low height rounded top and flat bearing surface. Secured with a nut, carriage bolts commonly fasten wood to wood, wood to metal and metal to metal. Since the head isn't externally wrenched, the bolt can be installed in a flat bottom counterbored recess, which allows the top of the head to be flush with the mating surface. Available in steel, Class 4.6 and 8.8, and stainless steel. Steel bolts are zinc plated or supplied with a plain finish (unplated and susceptible to rust). Thread tolerance for plain finish steel and stainless steel is 6g and 6h for plated steel; right-hand threads are standard. Minimum threaded length is based on bolt diameter and bolt length. Bolt length is measured from under the head to the tip and includes the square neck. DIN 603 Carriage Bolts are similar to ISO 8677, ISO 8678 and ASME B18.5.2.1M.

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Code Product Qty. Package Qty. Carton  
BBA618-606 M5-0.8 x 16 mm Carriage Bolt DIN 603, Class 4.6, Plain Finish (no rust protection)
BBB618-606 M5-0.8 x 16 mm Carriage Bolt DIN 603, Class 4.6, Zinc Plated
BBD618-606 M5-0.8 x 16 mm Carriage Bolt DIN 603, Class 8.8, Plain Finish (no rust protection)
BBE618-606 M5-0.8 x 16 mm Carriage Bolt DIN 603, Class 8.8, Zinc Plated
BBG618-606 M5-0.8 x 16 mm Carriage Bolt DIN 603, A2 Stainless Steel
BBA618-610 M5-0.8 x 20 mm Carriage Bolt DIN 603, Class 4.6, Plain Finish (no rust protection)
BBB618-610 M5-0.8 x 20 mm Carriage Bolt DIN 603, Class 4.6, Zinc Plated
BBG618-610 M5-0.8 x 20 mm Carriage Bolt DIN 603, A2 Stainless Steel
BBA618-615 M5-0.8 x 25 mm Carriage Bolt DIN 603, Class 4.6, Plain Finish (no rust protection)
BBB618-615 M5-0.8 x 25 mm Carriage Bolt DIN 603, Class 4.6, Zinc Plated
BBA618-620 M5-0.8 x 30 mm Carriage Bolt DIN 603, Class 4.6, Plain Finish (no rust protection)
BBB618-620 M5-0.8 x 30 mm Carriage Bolt DIN 603, Class 4.6, Zinc Plated
BBA618-625 M5-0.8 x 35 mm Carriage Bolt DIN 603, Class 4.6, Plain Finish (no rust protection)
BBB618-625 M5-0.8 x 35 mm Carriage Bolt DIN 603, Class 4.6, Zinc Plated
BBB618-630 M5-0.8 x 40 mm Carriage Bolt DIN 603, Class 4.6, Zinc Plated
BBB618-635 M5-0.8 x 45 mm Carriage Bolt DIN 603, Class 4.6, Zinc Plated
BBB618-640 M5-0.8 x 50 mm Carriage Bolt DIN 603, Class 4.6, Zinc Plated
BBB618-650 M5-0.8 x 60 mm Carriage Bolt DIN 603, Class 4.6, Zinc Plated
BBB618-660 M5-0.8 x 70 mm Carriage Bolt DIN 603, Class 4.6, Zinc Plated
BBB618-670 M5-0.8 x 80 mm Carriage Bolt DIN 603, Class 4.6, Zinc Plated
BBD636-602 M6-1.0 x 12 mm Carriage Bolt DIN 603, Class 8.8, Plain Finish (no rust protection)
BBE636-602 M6-1.0 x 12 mm Carriage Bolt DIN 603, Class 8.8, Zinc Plated
BBF636-602 M6-1.0 x 12 mm Carriage Bolt DIN 603, Class 8.8, Zinc Yellow Plated
BBG636-602 M6-1.0 x 12 mm Carriage Bolt DIN 603, A2 Stainless Steel
BBA636-606 M6-1.0 x 16 mm Carriage Bolt DIN 603, Class 4.6, Plain Finish (no rust protection)

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