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Carriage bolts (also descriptively called round head square neck bolts) generally feature a broad, shallow round head and threading along part of the carriage bolt shank, and is inserted into pre-drilled holes. The square under the head keeps the carriage bolt from turning as the nut is tightened.

Carriage bolts are commonly used in wood and are used to fasten wood parts, or wood and metal parts, together. Carriage bolts are also successful with sheet metal applications, where a standard sized neck may create an obstruction.
A307 GRADE A CARRIAGE BOLT, HDG (INCH)
Unit of Measure
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50C150BCG2G N/A 1/2-13 X 1 1/2 CARRIAGE BOLT A307 GRADE A GALVANIZED N/A 400 $177.56
50C150BCG2G N/A 1/2-13 X 1 1/2 CARRIAGE BOLT A307 GRADE A GALVANIZED N/A 50 $36.62
50C125BCG2G N/A 1/2-13 X 1 1/4 CARRIAGE BOLT A307 GRADE A GALVANIZED N/A 500 $248.75
50C125BCG2G N/A 1/2-13 X 1 1/4 CARRIAGE BOLT A307 GRADE A GALVANIZED N/A 50 QUOTE
50C175BCG2G N/A 1/2-13 X 1 3/4 CARRIAGE BOLT A307 GRADE A GALVANIZED N/A 400 $229.45
50C175BCG2G N/A 1/2-13 X 1 3/4 CARRIAGE BOLT A307 GRADE A GALVANIZED N/A 50 $56.81
50C100BCG2G N/A 1/2-13 X 1 CARRIAGE BOLT A307 GRADE A GALVANIZED N/A 500 $226.85
50C100BCG2G N/A 1/2-13 X 1 CARRIAGE BOLT A307 GRADE A GALVANIZED N/A 50 $44.89
50C1050BCG2G/600T N/A 1/2-13 X 10 1/2 CARRIAGE BOLT A307 GRADE A GALVANIZED (WITH 6 INCH THREAD) N/A 120 $382.15
50C1000BCG2G/600T N/A 1/2-13 X 10 CARRIAGE BOLT A307 GRADE A GALVANIZED (WITH 6 INCH THREAD) N/A 50 $105.13
50C1000BCG2G/600T N/A 1/2-13 X 10 CARRIAGE BOLT A307 GRADE A GALVANIZED (WITH 6 INCH THREAD) N/A 25 $129.52
50C1100BCG2G/600T N/A 1/2-13 X 11 CARRIAGE BOLT A307 GRADE A GALVANIZED (WITH 6 INCH THREAD) N/A 50 $125.95
50C1100BCG2G/600T N/A 1/2-13 X 11 CARRIAGE BOLT A307 GRADE A GALVANIZED (WITH 6 INCH THREAD) N/A 10 $58.96
50C1200BCG2G N/A 1/2-13 X 12 CARRIAGE BOLT A307 GRADE A GALVANIZED N/A 120 $346.26
50C1200BCG2G/600T N/A 1/2-13 X 12 CARRIAGE BOLT A307 GRADE A GALVANIZED (WITH 6 INCH THREAD) N/A 50 QUOTE
50C1200BCG2G/600T N/A 1/2-13 X 12 CARRIAGE BOLT A307 GRADE A GALVANIZED (WITH 6 INCH THREAD) N/A 25 QUOTE
50C1300BCG2G/600T N/A 1/2-13 X 13 CARRIAGE BOLT A307 GRADE A GALVANIZED (WITH 6 INCH THREAD) N/A 50 $149.21
50C1300BCG2G/600T N/A 1/2-13 X 13 CARRIAGE BOLT A307 GRADE A GALVANIZED (WITH 6 INCH THREAD) N/A 10 $69.85
50C1400BCG2G/600T N/A 1/2-13 X 14 CARRIAGE BOLT A307 GRADE A GALVANIZED (WITH 6 INCH THREAD) N/A 50 $146.69
50C1400BCG2G/600T N/A 1/2-13 X 14 CARRIAGE BOLT A307 GRADE A GALVANIZED (WITH 6 INCH THREAD) N/A 10 $72.29
50C1500BCG2G/600T N/A 1/2-13 X 15 CARRIAGE BOLT A307 GRADE A GALVANIZED (WITH 6 INCH THREAD) N/A 60 $229.98
50C1600BCG2G/600T N/A 1/2-13 X 16 CARRIAGE BOLT A307 GRADE A GALVANIZED (WITH 6 INCH THREAD) N/A 25 $87.52
50C1600BCG2G/600T N/A 1/2-13 X 16 CARRIAGE BOLT A307 GRADE A GALVANIZED (WITH 6 INCH THREAD) N/A 5 $40.95
50C1800BCG2G/600T N/A 1/2-13 X 18 CARRIAGE BOLT A307 GRADE A GALVANIZED (WITH 6 INCH THREAD) N/A 50 $227.59
50C250BCG2G N/A 1/2-13 X 2 1/2 CARRIAGE BOLT A307 GRADE A GALVANIZED N/A 300 $208.27
Unit of Measure
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