high quality Hex head Bolts

A head with no markings is grade 2, one with 3 lines spaced 120 degrees is grade 5, and 6 lines spaced at 60 degree intervals is grade 8. nuts are marked in several different ways—see identification marks for hex and heavy hex nuts below. for other grade and property class specifics, look at these reference charts… hex cap screw specifications

A railroad track spike or a rail spike is a large nail with an offset head that is used to secure rails and base plates to the sleepers in track. as an important part of rail fastening system , rail spike is roughly chisel-shaped with a flat-edged point.

Made from 316 stainless steel, these grade b8m screws are more corrosion resistant than 18-8 stainless steel screws and have excellent resistance to chemicals and salt water. screws meet astm a193 regulations, so they can be used in high-pressure and high-temperature applications. also known as pressure bolts.

Mutual industries 1/2 in. x 14 in. galvanized anchor bolts (50-pack) model# 7701-0-14 $ 96 47 /package. simpson strong-tie wedge-all 5/8 in. x 6 in. mechanically galvanized expansion anchor (20-pack) model# wa62600mg $ 52 55 ... red head masonry & concrete anchors 1/2x4-1/2 bolt …

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