Stainless Steel Fasteners

All Monster Fastener fasteners are 18-8 stainless. This means they are made up of at least 18% chromium and 8% nickel. The presence of chromium and nickel in the stainless steel slows down the oxidation (rusting) of steel. The chromium reacts with oxygen to form a tough layer of chromium dioxide on the surface, which protects the stainless steel from corrosion.

Stainless fasteners offer superior corrosion resistance, but there is a trade-off. Stainless steel can't be heat treated so SS fasteners are generally softer than their steel equivalents. A stainless steel bolt is harder than a Grade 2 but softer than a Grade 5 bolt. SS deck screws are considerably softer then case hardened steel deck screws.

Use stainless fasteners for decks, docks, specialty woods, outdoor projects, pools, saunas and much more.

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Hex Bolts, Carriage Screws, Socket Caps, Lags, Cap Screws (1/4" and greater)
Nuts and Washers
Screws (1/4" and smaller)
Metric Fasteners


Stainless Hex and Socket Cap Bolts, Carriage Screws, Lags

    Stainless Steel Coarse Hex Cap Bolts Stainless Steel Fine Hex Cap Bolts Stainless Steel Carriage Bolts Stainless Steel Socket Cap Screws Stainless Steel Hex Lag Screws
    Hex Cap
(Coarse Thread - USS)
Hex Cap
(Fine Thread - SAE)
Carriage Bolts Socket Cap Lag Screws
circle 1/4" 1/4-20 1/4-28 1/4 1/4 1/4
circle 5/16" 5/16-18 5/16-24 5/16 5/16 5/16
circle 3/8" 3/8-16 3/8-24 3/8 3/8 3/8
circle 7/16" 7/16-14 7/16-20 7/16
circle 1/2" 1/2-13 1/2-20 1/2 1/2 1/2
circle 5/8" 5/8-11
circle 3/4" 3/4-10
   
Coarse
Hex Cap
Fine
Hex Cap
Carriage
Bolts
Socket
Cap
Hex Lag
Screws


Stainless Nuts and Washers

    Stainless Steel Flat Washer Stainless Steel Lock Washer Stainless Steel Carriage Bolts Stainless Steel Finishing Washer Stainless Steel Hex Nuts Stainless Steel Lock Nuts Stainless Steel Wing Nuts Stainless Steel Cap Nuts
    Flat Washers Lock Washers Fender Washers Finishing Washers Hex Nuts Stop / Lock Nuts Wing Nuts Cap Nuts
circle #0 #0 #0
circle #1 #1 #1
circle #2#2 #2
circle #3 #3 #3
circle #4 #4 #4 #4 #4
circle 1/8" (#6) #6 #6 #6 #6 #6 #6
circle 5/32" (#8) #8 #8 5/32" #8 #8 #8 #8 #8
circle 3/16" (#10) #10 #10 3/16" #10 #10 #10 #10 #10
circle 7/32" (#12) #12 #12
circle 1/4" (#14) 1/4" 1/4" 1/4" #14 1/4" 1/4" 1/4" 1/4"
circle 5/16" 5/16" 5/16" 5/16" 5/16" 5/16" 5/16" 5/16"
circle 3/8" 3/8" 3/8" 3/8" 3/8" 3/8" 3/8" 3/8"
circle 7/16" 7/16" 7/16" 7/16" 7/16"
circle 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2"
circle 5/8" 5/8" 5/8" 5/8" 5/8"
circle 3/4" 3/4" 3/4" 3/4" 3/4"
circle 7/8" 7/8" 7/8" 7/8" 7/8"
circle 1" 1" 1" 1" 1"
   
Flat Washers
Lock Washers
Fender Washers
Finishing Washers
Hex Nuts
Stop / Lock Nuts
Wing Nuts
Cap Nuts

Stainless Screws (diameters less than 1/4 inch)

    Stainless Steel Machine Screw Stainless Steel Sheet Metal Screw Stainless Steel Deck Screw Stainless Steel Knurled Socket Cap Screw Stainless Steel Socket Set Screw
    Machine
Screws
Sheet Metal
Screws
Deck
Screws
Socket Cap
Screws
Set
Screws
circle #0 #0
circle #1 #1
circle #2 #2
circle #3 #3
circle #4 #4 #4 #4 #4
circle #6 #6 #6 #6 #6 #6
circle #8 #8 #8 #8 #8 #8
circle #9 #9
circle #10 #10 #10 #10 #10 #10
circle #12 #12
circle #14 1/4" #14 1/4" 1/4"
   
Machine
Screws
Sheet Metal
Screws
Deck
Screws
Socket Cap
Screws
Set
Screws

Metric Stainless Fasteners

    Stainless Steel Machine Screw Stainless Steel Flat Washer Stainless Steel Lock Washer Stainless Steel Lock Nut Stainless Steel Hex Nut Stainless Steel Socket Cap Bolt Stainless Steel Hex Cap Bolt
    Machine
Screws
Flat
Washers
Lock
Washers
Lock
Nuts
Hex
Nuts
Socket Cap
Screws
Hex Cap
Screws
circle 3mm 3mm 3mm 3mm 3mm 3mm
circle 4mm 4mm 4mm 4mm 4mm 4mm 4mm 4mm
circle 4mm 5mm 3mm 5mm 5mm 5mm 5mm 5mm
circle 6mm 6mm 6mm 6mm 6mm 6mm 6mm 6mm
circle 8mm 8mm 8mm 8mm 8mm 8mm 8mm
circle 10mm 10mm 10mm 10mm 10mm 10mm 10mm
circle 12mm 12mm 12mm 12mm 12mm
circle 14mm 14mm
circle 16mm 16mm
   
Machine
Screws
Flat
Washers
Lock
Washers
Lock
Nuts
Hex
Nuts
Socket Cap
Screws
Hex Cap
Screws