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    26 Products

    Extension Springs

    Image of Attribute. Front orientation. Contains Inset, Border. Extension Springs. Double-Loop End.

    Double-Loop End

    The farther you stretch these springs, the harder they pull to bring the two ends back together. They're commonly used to tension cable, return an air cylinder to its starting point, or hold a door closed.
    Double-Loop End—Ends are strengthened by an extra loop, so these springs are less likely to break if overstretched.
    Corrosion-Resistant 302 Stainless Steel—Won’t corrode from exposure to moisture and mild chemicals, including ammonia often found in cleaning solutions. These springs are easier to extend than steel, but can’t handle as high a load.
    Minimum Load—The amount of force required to start extending the spring.
    Maximum Load—The amount of force required to fully extend the spring.
    Load,
    lb.
    Lg.
    OD
    Wire
    Dia.
    Extended Lg.
    @ Max. Load
    Min.
    Max.
    Spring Rate,
    lbf/in
    Pkg.
    Qty.
    Pkg.
    Double-Loop End
     
    Corrosion-Resistant 302 Stainless Steel
    3 1/2"0.75"0.093"4.962"7.4427.3513.6223795N33000000
     

    Spring Handles

    Image of Product. Front orientation. Spring Handles. Style 1.

    Style 1

    Also known as stove handles, these steel spring handles dissipate heat. Slide or weld them onto a shaft or rod to install.
    Nickel Plated and Zinc Yellow-Chromate Plated—Nickel-plated and zinc yellow-chromate plated handles are mildly rust resistant.
    Style
    For Rod
    Dia.
    Lg.
    Max.
    Dia.
    Mount Type
    Each
    Steel
    11/2"3 1/2"1 3/4"Slide On, Weld On4222N1400000
     
    Nickel-Plated Steel
    11/2"3 1/2"1 3/4"Slide On, Weld On2449N110000
     
    Zinc-Yellow-Chromate-Plated Steel
    11/2"3 1/2"1 3/4"Slide On, Weld On4223N140000
     

    Slotted Spring Pins

    Image of Product. Front orientation. Spring Pins. Slotted Spring Pins.
    Image of Product. End View. Side1 orientation. Spring Pins. Slotted Spring Pins.

    End View

    Squeeze these pins into holes and they expand slightly, creating tension to hold parts in place. They are often used as hinge pins and as fasteners for springs and power transmission components. An alternative to dowel pins, they're lighter in weight with a hollow center and don’t need a precise hole. Also known as roll pins.
    Spring Steel—These pins won't deform from stress and vibration. Although they're stronger than stainless steel, they're best for dry environments since moisture will cause them to rust.
    Zinc-Plated Spring Steel—These pins withstand occasional exposure to moisture. However, since friction from moving parts can wear away the finish, they're not ideal for wet environments. While not nearly as corrosion resistant as stainless steel, they are stronger and won’t deform under stress.
    Corrosion-Resistant 18-8 Stainless Steel—The choice for wet and outdoor environments, these pins resist rusting. They are strong enough to join most components but won't withstand extreme stress and vibration as well as steel.
    Wear-Resistant 400 Series Stainless Steel—Our most wear-resistant stainless steel pins, these are good for pivoting parts that create a lot of friction. They hold up in environments that experience occasional moisture, but they're not as corrosion resistant as 18-8 and 316 stainless steel.
    Lg.
    For Hole Dia.
    Wall
    Thk.
    Double Shear Breaking
    Strength, lbf
    Min.
    Hardness
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Spring Steel
     
    1/4" Diameter
    3 1/2"0.25" to 0.256"0.048"7,000Rockwell C43ASME B18.8.25098296A937000000
     
    5/16" Diameter
    3 1/2"0.312" to 0.318"0.062"10,800Rockwell C43ASME B18.8.22598296A00700000
     
    3/8" Diameter
    3 1/2"0.375" to 0.382"0.077"16,300Rockwell C43ASME B18.8.21098296A95500000
     
    1/2" Diameter
    3 1/2"0.5" to 0.51"0.094"27,000Rockwell C43ASME B18.8.21098296A67900000
     
    Zinc-Plated Spring Steel
     
    1/4" Diameter
    3 1/2"0.25" to 0.256"0.048"7,000Rockwell C43ASME B18.8.22590692A75500000
     
    5/16" Diameter
    3 1/2"0.312" to 0.318"0.062"10,800Rockwell C43ASME B18.8.21090692A7670000
     
    3/8" Diameter
    3 1/2"0.375" to 0.382"0.077"16,300Rockwell C43ASME B18.8.21090692A78100000
     
    1/2" Diameter
    3 1/2"0.5" to 0.51"0.094"27,000Rockwell C43ASME B18.8.21090692A67600000
     
    Corrosion-Resistant 18-8 Stainless Steel
     
    1/4" Diameter
    3 1/2"0.25" to 0.256"0.048"4,100Not RatedASME B18.8.2592373A38900000
     
    5/16" Diameter
    3 1/2"0.312" to 0.318"0.062"6,300Not RatedASME B18.8.2192373A4730000
     
    3/8" Diameter
    3 1/2"0.375" to 0.382"0.077"9,500Not RatedASME B18.8.2192373A5680000
     
    1/2" Diameter
    3 1/2"0.5" to 0.51"0.094"15,800Not RatedASME B18.8.2192373A6850000
     
    Wear-Resistant 400 Series Stainless Steel
     
    1/4" Diameter
    3 1/2"0.25" to 0.256"0.048"7,000Rockwell C43ASME B18.8.21092383A76900000
     
    5/16" Diameter
    3 1/2"0.312" to 0.318"0.062"10,800Rockwell C43ASME B18.8.2592383A7790000
     
    3/8" Diameter
    3 1/2"0.375" to 0.382"0.077"16,300Rockwell C43ASME B18.8.2192383A7910000
     
    1/2" Diameter
    3 1/2"0.5" to 0.51"0.094"27,000Rockwell C43ASME B18.8.2192383A6800000
     

    Wood Screw-Style Hangers

    Image of Product. Front orientation. Hanger Bolts. Wood Screw-Style Hangers.
    Drive these hangers into wood with an adjustable wrench, pliers, or a special driver bit (sold separately). They’re also known as eye lags.
    Zinc-Yellow-Chromate-Plated Steel—Zinc- and zinc yellow-chromate plated steel hangers are corrosion resistant in wet environments. The zinc yellow-chromate plated steel hangers meet quality standards outlined in ASTM B633 and dimensional standards outlined in ASME B18.2.1.
    Hanger Bolts
    Driver Bits
    Head
    Screw
    Size
    Lg.
    Threading
    Thread
    Lg.
    Eye
    Dia.
    Wd.
    Thk.
    Ht.
    Max. Wt.
    Cap.
    For Use
    In
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Each
    Zinc-Yellow-Chromate-Plated Steel
    5/16"
    		3 1/2"Partially Threaded1 3/4"1/4"7/16"3/32"9/16"Not RatedWoodASME B18.2.1, ASTM B6332590171A5970000005977A43000000
     

    Heavy Duty Coiled Spring Pins

    Image of Product. Front orientation. Spring Pins. Heavy Duty Coiled Spring Pins.
    Image of Product. End View. Side1 orientation. Spring Pins. Heavy Duty Coiled Spring Pins.

    End View

    Made of thicker material than our other coiled spring pins, these are about 30% stronger with the same resilience to vibration and shock. They are often used in power transmission, automation, and other assemblies with constant motion and sudden starts and stops. Because of their spiral shape, pins flex to conform to holes that aren’t perfectly round.
    Spring Steel—These pins won't deform from stress and vibration. Although they're stronger than stainless steel, they're best for dry environments since moisture will cause them to rust.
    Lg.
    For Hole Dia.
    Double Shear Breaking
    Strength
    Min.
    Hardness
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Spring Steel
     
    5/8" Diameter
    3 1/2"0.618" to 0.635"Not RatedRockwell C42ASME B18.8.2195755A749000000
     

    Tooth-Slotted Spring Pins

    Image of Product. Front orientation. Spring Pins. Tooth-Slotted Spring Pins.
    Image of Product. End View. Side1 orientation. Spring Pins. Tooth-Slotted Spring Pins.

    End View

    The interlocking teeth resist pulling forces that can cause other slotted pins to wiggle out of place. These pins stay in position under vibration and in holes that aren't perfectly round. Compress pins to insert them in a hole. Once installed, they expand slightly and create tension to hold parts in place. Also known as roll pins.
    Black-Oxide Spring Steel—These pins won't deform from stress and vibration. The dark, matte coating creates a finished look with minimal corrosion resistance, so they're best for dry environments.
    Lg.
    For Hole Dia.
    Wall
    Thk.
    Double Shear Breaking
    Strength, lbf
    Min.
    Hardness
    Each
    Black-Oxide Spring Steel
     
    5/8" Diameter
    3 1/2"0.625" to 0.626"0.115"13,800Rockwell C4290354A106000000
     

    Coiled Spring Pins

    Image of Product. Front orientation. Spring Pins. Coiled Spring Pins.
    Image of Product. End View. Side1 orientation. Spring Pins. Coiled Spring Pins.

    End View

    The best spring pins for joining parts exposed to vibration and shock. They're often used in power transmission, automation, and other assemblies with constant motion and sudden starts and stops. Because of their spiral shape, they flex to conform to holes that aren’t perfectly round.
    Spring Steel—These pins won't deform from stress and vibration. Although they're stronger than stainless steel, they're best for dry environments since moisture will cause them to rust.
    Lg.
    For Hole Dia.
    Double Shear Breaking
    Strength, lbf
    Min.
    Hardness
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Spring Steel
     
    1/4" Diameter
    3 1/2"0.247" to 0.256"5,500Rockwell C42ASME B18.8.21091598A502000000
     
    3/8" Diameter
    3 1/2"0.375" to 0.383"12,600Rockwell C42ASME B18.8.2591598A57800000
     
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