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
Nucor (Fastner Division) n