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Bolt Manufactures with a Minimum of Grade 2 Bolts

This table is to help identify bolts that have no grade marking, but have a manufactuer marking. If the bolts on this list than you can assume that it meets SAE J429 grade 2 specifications or the ASTM 307A specifications.

Marking PictureManufactuer NameBolt Head MarkingWebpage the shows the minimum grade
Lakshmi Precision Screws Ltd. L P S http://www.lpsindia.com/grades.aspx
Nucor (Fastner Division) n http://www.nucor-fastener.com/Files/PDFs/TechDataSheets/TDS_005_Grade_2_&_A307_Bolting.pdf