
Steel Carriage Bolt, Grade 2, Zinc Plated Finish, Square Neck, Round Head, Meets ASME B18.5/ASTM A307, 5/8" Length, Fully Thread-
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From $5.64 (New)

From $5.64 (New)

| Last Seen | |
| Highest | $11.17 Aug 10, '15 |
| Lowest | $2.60 Apr 26, '15 |
| Average | $5.65 (30d avg) $6.57 (90d avg) $7.79 (180d avg) $7.87 (365d avg) $7.30 (Lifetime average) |
| Added | Feb 18, 2015 |
30 day average: 511,549
90 day average: 484,139
The grade 2 steel carriage bolt with zinc plated finish has a square neck and a round head and meets American Society of Mechanical Engineers ASME B18.5 and ASTM A307 specifications. Grade 2 steel, composed of either low or medium carbon steel, is often used in applications where toughness is the primary consideration. The zinc plating offers corrosion resistance and has a reflective appearance. The square neck prevents the bolt from turning once installed, even when a nut is tightened. The round head has a domed shape.Carriage bolts, also called round head square neck bolts, are square-necked threaded fasteners commonly used in wood fastening applications. The bolts square neck prevents it from turning once installed using a nut.