Category
Viewing 1 - 16 of 1200
8T-4121: M10 ID Steel Flat Washer
Cat®Flat Washer (Clutch,Brake,Transmission)
$1.28 USD
Cat
Material
HARDENED STEEL,Alloy Zinc,Low Alloy Steel
Washer Type
Flat
Fits Bolt Sizes (in)
3/8
Material Description
Hardened Steel
Coating
Zinc Flake-Black
Inner Diameter (in)
0.433
Outer Diameter (in)
0.827
Thickness (in)
0.098
Hardened
Yes
Inside Diameter (in)
0.433
Outside Diameter (in)
0.827
Finish Notes
Caterpillar is changing from Zinc Plating to a Zinc Flake finish for many washers. The new coating improves corrosion protection to 720 hours. Until stock of the current finish is depleted, you may receive either finish due to the exhaust process.
Finish
Zinc Flake
3J-1907: 1.98 x 11.89mm 90A NBR O-Ring
Shop Cat® part 3J-0360 straight thread o-ring SAE 9/16-18 thread (Lines Group, Wheel Group).This STOR o-ring seal is used in static sealing and engineered for specific applications and conditions.
$2.28 USD
Cat
SAE AS568 Dash Size
N/A
Cross Section Diameter (in)
0.078
Inside Diameter (in)
0.468
Material
NBR - Nitrile,Nitrile (NBR),Polytetrafluoroethylene (PTFE) Plastic,Nitrile / NBR / HNBR / XNBR Rubber
Material Description
Nitrile (NBR) rubber is capable of service temperatures of -40 to 100C and is resistant to fuel oils, gasoline, ultra low sulfur diesel fuel and lubricants. Nitrile rubber is not recommended for applications that require resistance to bio-diesel or coolant.
Notes
Dimensions and material descriptions provided for reference only.
Polymer
NBR (Nitrile butadiene)
Material Hardness
90A
Dash Size
906
Fitting Size (in)
9/16 – 18
O-Ring Type
Straight Thread O-ring (STOR)
Primary Sealing Material
Rubber
8T-4223: M12 ID Steel Flat Washer
Cat®Flat Washer (Clutch,Brake,Transmission)
$1.86 USD
Cat
Material
HARDENED STEEL,Low Alloy Steel,Alloy Zinc
Washer Type
Flat
Fits Bolt Sizes (in)
1/2
Material Description
Hardened Steel
Coating
Zinc Flake-Black
Inner Diameter (in)
0.531
Outer Diameter (in)
1.004
Thickness (in)
0.118
Hardened
Yes
Inside Diameter (in)
0.531
Outside Diameter (in)
1.004
Finish Notes
Caterpillar is changing from Zinc Plating to a Zinc Flake finish for many washers. The new coating improves corrosion protection to 720 hours. Until stock of the current finish is depleted, you may receive either finish due to the exhaust process.
Finish
Zinc Flake
3K-0360: 2.21 x 16.36mm 90A NBR O-Ring
Shop Cat® part 3k-0360 straight thread o-ring SAE SAE 3/4-16 thread (Lines Group, Engine).This STOR o-ring seal is engineered for static sealing resistant to wear.
$2.56 USD
Cat
Cross Section Diameter (in)
0.087
Inside Diameter (in)
0.644
SAE AS568 Dash Size
-908
Material
NBR (90),NBR - Nitrile,Nitrile (NBR),Polytetrafluoroethylene (PTFE) Plastic,Nitrile / NBR / HNBR / XNBR Rubber
Material Description
Nitrile (NBR) rubber is capable of service temperatures of -40 to 100C and is resistant to fuel oils, gasoline, ultra low sulfur diesel fuel and lubricants. Nitrile rubber is not recommended for applications that require resistance to bio-diesel or coolant.
Notes
Dimensions and material descriptions provided for reference only.
Polymer
NBR (Nitrile butadiene)
Applications
Ambient temperature fuel handling; High and low pressure LPG service; Hydraulic fluids (to 10,335 kPa/1,500 psi); Power steering seals; Radiator thermostat seals
Not Compatible With
Automotive and aircraft brake fluids; High levels of ozone; Ketones; Phosphate ester fluids; Strong acids; UV light
Material Hardness
90A
Compatible With
Abrasion resistant; Alpha-Olefin base synthetic lubricants; Ethylene Glycol; Hydrocarbon fuels; Petroleum base lubricants; Silicone oils and greases; Water, water base engine coolants; ORFS, STORS seals
Dash Size
908
Temperature (°F)
-40 - 212
Fitting Size (in)
3/4 – 16
O-Ring Type
Straight Thread O-ring (STOR)
6V-8397: 1.78 x 9.27mm 90A NBR O-Ring
Cat® O-Ring Face Seal ensures a leak-free connection between hydraulic hoses and adapter
$2.31 USD
Cat
Cross Section Diameter (in)
0.07
Inside Diameter (in)
0.365
SAE AS568 Dash Size
-12
Material
NBR - Nitrile,Nitrile (NBR),Polytetrafluoroethylene (PTFE) Plastic,Nitrile / NBR / HNBR / XNBR Rubber
Material Description
Nitrile (NBR) rubber is capable of service temperatures of -40 to 100C and is resistant to fuel oils, gasoline, ultra low sulfur diesel fuel and lubricants. Nitrile rubber is not recommended for applications that require resistance to bio-diesel or coolant.
Notes
Dimensions and material descriptions provided for reference only.
Polymer
NBR (Nitrile butadiene)
Material Hardness
90A
Dash Size
012
Fitting Size (in)
11/16 – 16
Primary Sealing Material
Rubber
O-Ring Type
O-ring Face Seal (ORFS)
6V-8398: 1.78 x 12.47mm 90A NBR O-Ring
Cat® O-Ring Face Seal ensures a leak-free connection between hydraulic hoses and adapter
$2.36 USD
Cat
Cross Section Diameter (in)
0.07
Inside Diameter (in)
0.491
SAE AS568 Dash Size
-14
Material
NBR - Nitrile,Nitrile (NBR),Polytetrafluoroethylene (PTFE) Plastic,Nitrile / NBR / HNBR / XNBR Rubber
Material Description
Nitrile (NBR) rubber is capable of service temperatures of -40 to 100C and is resistant to fuel oils, gasoline, ultra low sulfur diesel fuel and lubricants. Nitrile rubber is not recommended for applications that require resistance to bio-diesel or coolant.
Notes
Dimensions and material descriptions provided for reference only.
Polymer
NBR (Nitrile butadiene)
Material Hardness
90A
Dash Size
014
Fitting Size (in)
13/16 – 16
Primary Sealing Material
Rubber
O-Ring Type
O-ring Face Seal (ORFS)
2J-3506: 3/4''-10 Hex Nut
Discover durable steel hex nut for reliable performance with Cat. Perfect for heavy-duty applications, ensuring strength and quality.
$2.80 USD
Cat
Thickness (in)
0.665
Height (in)
0.66
Nut Type
Hex
Drive (in)
1.125
Thread Size (in - TPI) (in)
3/4-10
Material
Steel,Carbon Steel,Alloy Zinc
Material Description
20+% stronger than SAE J995 Grade 8
Coating
Zinc Phosphate + Oil
Hand of Thread
RH
Class or Grade
Cat/SAE J995 Grade 8+ (170 ksi)
Nut Width - 3 (in)
1 1/8
Hole Thread Pitch
10
5M-2894: 3/8" ID Steel Flat Washer
Cat®Flat Washer (Clutch,Brake,Transmission)
$0.90 USD
Cat
Material
HARDENED STEEL,Alloy Zinc,Low Alloy Steel
Washer Type
Flat
Fits Bolt Sizes (in)
3/8
Material Description
Hardened Steel
Coating
Zinc Phosphate + Oil
Inner Diameter (in)
0.402
Outer Diameter (in)
0.728
Thickness (in)
0.098
Inside Diameter (ID) - 1 (in)
0.39
Outside Diameter (OD) - 2 (in)
0.72
Thickness - 3 (in)
0.09
Hardened
Yes
Inside Diameter (in)
0.402
Outside Diameter (in)
0.728
Finish
Phosphate and Oil Coated
6V-9746: 1.78 x 18.94mm 90A NBR O-Ring
Cat® O-Ring Seal is designed to prevent leaks in hydraulic systems by creating a tight seal between two surfaces
$2.61 USD
Cat
SAE AS568 Dash Size
N/A
Cross Section Diameter (in)
0.07
Inside Diameter (in)
0.746
Material
Rubber,NBR - Nitrile,Nitrile (NBR),Polytetrafluoroethylene (PTFE) Plastic,Nitrile / NBR / HNBR / XNBR Rubber
Material Description
Nitrile (NBR) rubber is capable of service temperatures of -40 to 100C and is resistant to fuel oils, gasoline, ultra low sulfur diesel fuel and lubricants. Nitrile rubber is not recommended for applications that require resistance to bio-diesel or coolant.
Notes
Dimensions and material descriptions provided for reference only.
Seal Type
ORFS
Polymer
NBR (Nitrile butadiene)
Material Hardness
90A
Fitting Size (in)
1-3/16 – 12
7M-8485: 2.95 x 29.74mm 90A NBR O-Ring
Cat®Stor O-Ring Seal (SAE 1-5/16-12) (Line Group, Radiator Group)
$3.83 USD
Cat
Cross Section Diameter (in)
0.116
Inside Diameter (in)
1.171
SAE AS568 Dash Size
-916
Material
NBR - Nitrile,NBR (90),Nitrile (NBR),Nitrile / NBR / HNBR / XNBR Rubber,Polytetrafluoroethylene (PTFE) Plastic
Material Description
Nitrile (NBR) rubber is capable of service temperatures of -40 to 100C and is resistant to fuel oils, gasoline, ultra low sulfur diesel fuel and lubricants. Nitrile rubber is not recommended for applications that require resistance to bio-diesel or coolant.
Notes
Dimensions and material descriptions provided for reference only.
Polymer
NBR (Nitrile butadiene)
Applications
Ambient temperature fuel handling; High and low pressure LPG service; Hydraulic fluids (to 10,335 kPa/1,500 psi); Power steering seals; Radiator thermostat seals
Not Compatible With
Automotive and aircraft brake fluids; High levels of ozone; Ketones; Phosphate ester fluids; Strong acids; UV light
Material Hardness
90A
Compatible With
Abrasion resistant; Alpha-Olefin base synthetic lubricants; Ethylene Glycol; Hydrocarbon fuels; Petroleum base lubricants; Silicone oils and greases; Water, water base engine coolants; ORFS, STORS seals
Dash Size
916
Temperature (°F)
-40 - 212
Fitting Size (in)
1-5/16 – 12
O-Ring Type
Straight Thread O-ring (STOR)
3D-2824: 2.95 x 23.47mm 90A NBR O-Ring
Discover Cat's precision-engineered nitrile O-ring. From gaskets to heavy-duty seals, ensure optimal performance with reliable parts.
$3.50 USD
Cat
SAE AS568 Dash Size
N/A
Cross Section Diameter (in)
0.116
Inside Diameter (in)
0.924
Material
NBR - Nitrile,NBR (90),Nitrile (NBR),Nitrile / NBR / HNBR / XNBR Rubber,Polytetrafluoroethylene (PTFE) Plastic
Material Description
Nitrile (NBR) rubber is capable of service temperatures of -40 to 100C and is resistant to fuel oils, gasoline, ultra low sulfur diesel fuel and lubricants. Nitrile rubber is not recommended for applications that require resistance to bio-diesel or coolant.
Notes
Dimensions and material descriptions provided for reference only.
Polymer
NBR (Nitrile butadiene)
Applications
Ambient temperature fuel handling; High and low pressure LPG service; Hydraulic fluids (to 10,335 kPa/1,500 psi); Power steering seals; Radiator thermostat seals
Not Compatible With
Automotive and aircraft brake fluids; High levels of ozone; Ketones; Phosphate ester fluids; Strong acids; UV light
Material Hardness
90A
Compatible With
Abrasion resistant; Alpha-Olefin base synthetic lubricants; Ethylene Glycol; Hydrocarbon fuels; Petroleum base lubricants; Silicone oils and greases; Water, water base engine coolants; ORFS, STORS seals
Dash Size
912
Temperature (°F)
-40° - 212°
Fitting Size (in)
1-1/16 – 12
O-Ring Type
Straight Thread O-ring (STOR)
214-7568: STOR O-Ring Seal (SAE 9/16-18)
Cat®Stor O Ring Seal (SAE 9/16-18) (Wiring, Pump Group)
$6.31 USD
Cat
Material
FKM - Fluoroelastomer,FKM,Polytetrafluoroethylene (PTFE) Plastic,Fluoroelastomer (FKM) Rubber
Cross Section Diameter (in)
0.078
Inside Diameter (in)
0.468
SAE AS568 Dash Size
0
Material Description
FKM rubber is capable of service temperatures of -40 to 150C and is resistant to air, fuel (including bio-diesel), lubricants and oils. FKM rubber should not be used in applications that require resistance to water or coolant.
Notes
Dimensions and material descriptions provided for reference only.
Polymer
FKM (Fluorocarbon)
Material Hardness
90A
Dash Size
906
Fitting Size (in)
1/2 – 20
O-Ring Type
Straight Thread O-ring (STOR)
Primary Sealing Material
Rubber
2J-3507: 1''-8 Hex Nut
Track Nut
$6.30 USD
Cat
Thickness (in)
0.887
Height (in)
0.89
Nut Type
Hex
Drive (in)
1.5
Thread Size (in - TPI) (in)
1/1-8
Material
Steel,Alloy Zinc,Carbon Steel
Material Description
20+% stronger than SAE J995 Grade 8
Coating
Zinc Phosphate + Oil
Hand of Thread
RH
Class or Grade
Cat/SAE J995 Grade 8+ (170 ksi)
Nut Width - 3 (in)
1 1/2
Hole Thread Pitch
8
2M-9780: 2.46 x 19.18mm 90A NBR O-Ring
Cat®Stor O Ring Seal (SAE 7/8-14) (Pump Group,Brake, Line Group)
$2.80 USD
Cat
Cross Section Diameter (in)
0.097
Inside Diameter (in)
0.755
SAE AS568 Dash Size
-910
Material
NBR - Nitrile,NBR (90),Nitrile (NBR),Polytetrafluoroethylene (PTFE) Plastic,Nitrile / NBR / HNBR / XNBR Rubber
Material Description
Nitrile (NBR) rubber is capable of service temperatures of -40 to 100C and is resistant to fuel oils, gasoline, ultra low sulfur diesel fuel and lubricants. Nitrile rubber is not recommended for applications that require resistance to bio-diesel or coolant.
Notes
Dimensions and material descriptions provided for reference only.
Polymer
NBR (Nitrile butadiene)
Applications
Ambient temperature fuel handling; High and low pressure LPG service; Hydraulic fluids (to 10,335 kPa/1,500 psi); Power steering seals; Radiator thermostat seals
Not Compatible With
Automotive and aircraft brake fluids; High levels of ozone; Ketones; Phosphate ester fluids; Strong acids; UV light
Material Hardness
90A
Compatible With
Abrasion resistant; Alpha-Olefin base synthetic lubricants; Ethylene Glycol; Hydrocarbon fuels; Petroleum base lubricants; Silicone oils and greases; Water, water base engine coolants; ORFS, STORS seals
Dash Size
910
Temperature (°F)
-40 - 212
Fitting Size (in)
7/8 – 14
O-Ring Type
Straight Thread O-ring (STOR)
5P-8245: M12 ID Steel Flat Washer
Cat® Flat Washer, ID X OD X T: 13.5 X 25.5 X 3 mm
$1.62 USD
Cat
Washer Type
Flat
Material
HARDENED STEEL,Hardened Steel,Low Alloy Steel,Alloy Zinc
Coating
Zinc Phosphate + Oil
Material Description
Hardened Steel
Fits Bolt Sizes (in)
1/2
Inner Diameter (in)
0.531
Inside Diameter (in)
0.531
Outside Diameter (in)
1.004
Outer Diameter (in)
1.004
Thickness (in)
0.118
Inside Diameter (ID) - 1 (in)
0.53
Outside Diameter (OD) - 2 (in)
1.00
Thickness - 3 (in)
0.12
Hardened
Yes
Finish
Phosphate and Oil Coated
5P-8248: 3/4" ID Steel Flat Washer
Cat® A Hard Washer designed for 0.75-inch fastener prevents the fastener from sinking into the material and distributes the load more evenly.
$2.71 USD
Cat
Material
HARDENED STEEL,Low Alloy Steel,Alloy Zinc
Washer Type
Flat
Fits Bolt Sizes (in)
3/4
Material Description
Hardened Steel
Coating
Zinc Phosphate + Oil
Inner Diameter (in)
0.787
Outer Diameter (in)
1.437
Thickness (in)
0.138
Inside Diameter (ID) - 1 (in)
0.79
Outside Diameter (OD) - 2 (in)
1.44
Hardened
Yes
Thickness - 3 (in)
0.14
Inside Diameter (in)
0.787
Outside Diameter (in)
1.437
Finish
Phosphate and Oil Coated
Viewing 1 - 16 of 1200
This part is designed to fit your Cat equipment based on the manufacturer’s specifications.
Any changes to the manufacturer’s configuration might result in the product not fitting your Cat equipment. Please consult your Cat Dealer before purchasing to ensure that this part is appropriate for your Cat equipment in its current condition and assumed configuration. This indicator cannot guarantee compatibility for all parts.
Remanufactured
Non-Returnable
Kit
Replaced
Remanufactured
Non-Returnable
Kit
Replaced
We believe Cat hardware, seals, linkage pins, bearings and other consumables are some of the best made components in the world. They have to be, to perform under the most demanding conditions on the planet. They are used on all Cat machines and power systems to prevent fluid contamination and deliver long, leak-free performance.
Hardware & Fasteners
Caterpillar supplies both standard-strength bolts for normal applications and high-strength bolts for demanding applications and carries a wide selection of washers, nuts, clips, clamps and other hardware.Seals
Caterpillar offers several material and seal types that are specifically matched to your Cat system’s different fluid types, temperatures, and pressures. Cat seals meet or exceed SAE standards and offer tight dimensional controls and O-Ring coatings to improve installation and performance.Consumables & Other Components
Cat consumables and other components provide the components you need to keep your equipment operating and looking new. From linkage pins, bearings, belts & pulleys, plates & brackets and films & labels we’ve got you covered.Hardware and Fasteners Frequently Asked Questions
What grade are Cat Bolts?- Caterpillar offers a variety of bolt grades/classes. We offer standard-strength bolts such as SAE Grade 8 and ISO Class 10.9, and high-strength bolts such as 11.9.
- Consult your local dealer or use a thread gauge and scale to determine the thread type and length of the fastener. Then, use the Fastener Finder tool in the reference section to locate the correct fastener part number for your machine or application.
- Clean all surfaces of rust, debris, paint and burrs, tighten all bolts to the specified torque, replace damaged fasteners with new genuine fasteners to ensure optimized clamp load, be careful not to overtighten bolts, low torque may be needed to prevent damage when fastening non-metallic material, and fasteners should be stored in an environmentally controlled area or be sufficiently packaged to protect against corrosion.