Hex Head Cap Screws and Full Thread Hex                            ASTM A193 Grade 8 Heavy Hex Head Cap Screws
Trimmed Hex Head Caps                                                            ASTM AF593 Hex Head Caps
Indented Hex Machine Screws                                                    Carriage Bolts
Hex Lag Bolts                                                                                  Shoulder Bolts
Elevator Bolts                                                                                  Penta Head Bolts
Hanger Bolts                                                                                   Sidewalk Bolts
Machine & Finished Nuts                                                              Jam, Heavy Jam & Heavy Nuts
Small Pattern, Castle, Knurled Nuts                                           K-L, Flex Loc, High Crown Cap, Castle Nuts
Nylon Insert Nuts -Thin, NTU, NU, NE, NTM, NM                      Waxed Nylon Inserts, Center Lock
Cap, Wing, Coupling, Square, Serrated Flange, T-Nuts         Left Hand Jam & Finished, Small Pat K-L Nuts
ASTM A194 Gr8 Fin, Heavy Nuts                                                  ASTM F594 Finished Nuts
Slotted, Phillips, Sq Dr. Sheet Metal Screws A & B                  Slotted Phillips Square Drive Machine Screws
Slotted/Phillips Combo Pan M/S & S/M/S                                  Slotted Phillips Square Frearson Wood Screws
SEMS Machine Screws                                                                 Flat Fender SAE Flat Washers
Cup, Flange Cup Neoprene Bonded Washers                        Belleville, Bevelled Washers
Light, Medium, Heavy, High Collar Lockwashers                     Internal/External/Ext Ctsk Lock Washers
Socket Caps and Low Head Sockets                                         Socket Sets - Various Points
Square Head Sets                                                                          Flat, Button, Flange Button Sockets
Thumb, Shoulder, Knurled Screws                                             Threaded Rod
Key, Round Stock                                                                            Roll, Cotter, Dowel Pins
Deck Screws, Rivets                                                                       Shaft Collars, Bits
Drive Screws, Pipe Plugs                                                              U-Bolts, Eye Bolts
Pin-In Buttons, Flats, Spanners                                                   Self-Drilling Screws
Metric - Hex Caps - Full & Partial Thread                                    Nuts, Jam, Nylon Inserts, Cap, Wing Nuts
Flat, Fender, Lockwashers, Int-Ext Lockwashers                     Socket Caps, Socket Sets, Button, Flat
Dowel Pins, Threaded Rod                                                           Machine Screws
Black Oxide Fasteners                                                                   Patched Fasteners          
Chrome-Plated Fasteners                                                            Nickel-Plated Fasteners
Stainless Steel

18-8, 304, 316, 410, 420, SILICON BRONZE, BRASS, ALUMINUM,
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Stainless Steel - In metallurgy, stainless steel is defined as a ferrous alloy with a minimum of
10.5% chromium content. The name originates from the fact that stainless steel does not stain,
corrode or rust as easily as ordinary steel. This material is also called corrosion resistant steel when it
is not detailed exactly to its alloy type and grade, particularly in the aviation industry.


Stainless steels have higher resistance to oxidation (rust) and corrosion in many natural and man
made environments; however, it is important to select the correct type and grade of stainless steel for
the particular application.

High oxidation resistance in air at ambient temperature is normally achieved with additions of more
than 12% (by weight) chromium. The chromium forms a passivation layer of chromium(III) oxide
(Cr2O3) when exposed to oxygen. The layer is too thin to be visible, meaning the metal stays shiny. It
is, however, impervious to water and air, protecting the metal beneath. Also, when the surface is
scratched this layer quickly reforms. This phenomenon is called passivation by materials scientists,
and is seen in other metals, such as aluminium. When stainless steel parts such as nuts and bolts
are forced together, the oxide layer can be scraped off causing the parts to weld together. When
disassembled, the welded material may be torn and pitted, an effect that is known as galling.