Seller: stlhardware (4,185) 99.9% , Location: Saint Louis, Missouri, Ships to: US & many other countries, Item: 162301374506 Qty. 4 - vintage square head machine bolts 2 @ 3/4-10 x 3" and 2 @ 3/4-10 x 3 1/2" - plain steel finish - thread length is 2" - the head is approximately 1 1/8" square and 7/16" thick - some surface rust on the threads and head - the machine bolts and nuts will come packaged in a zip lock bag . I do not know the grade as these are unmarked. New old stock from an oldtime hardware store. Condition: New old stock - some surface rust on the threads and head and the nuts - need cleaned - will come in a zip lock baggie - these are not marked so I do not know the grade, Brand: Unbranded/Generic, MPN: Does not apply, Fastener Type: Machine Bolt with Nut, Drive Type: Wrench, Head Style: Square, Coating: Plain, Grade: unknown, Material: Steel, Thread Diameter (in.): 3/4-10, Length (in.): 2 @ 3" and 2 @ 3 1/2", Model: Square Head Machine Bolt, Quantity: 4, Country/Region of Manufacture: United States, Thread Length: 2"