CAT 9M-1974 M8 Hardened Steel Flat Washer 8.8mm. Hardened steel flat washer for selected Caterpillar applications. Public CAT specifications and compatible-model examples are listed below; confirm fitment by serial number. Contact RUIPO for stock status and international quotation.
CAT 9M-1974 M8 Hardened Steel Flat Washer 8.8mm est identifié par la référence Caterpillar 9M-1974. Provides a stable bearing surface under a fastener head or nut, distributing clamp load over a controlled area. Washers are often treated as generic hardware, but the specified hardness, thickness, surface coating and hole size all matter in a critical Caterpillar joint. This listing is intended for engineers, fleet maintenance teams and international B2B parts buyers who need a clear product specification and a defensible method of checking the application before ordering.
Provides a stable bearing surface under a fastener head or nut, distributing clamp load over a controlled area. Washers are often treated as generic hardware, but the specified hardness, thickness, surface coating and hole size all matter in a critical Caterpillar joint.
Even inexpensive service parts can determine whether a larger repair succeeds. Dimensions, mating geometry, material and installation sequence should be checked against the exact manufacturer drawing rather than assuming that another component with a similar appearance is interchangeable.
| Spécifications | Détails |
|---|---|
| Brand / part identification | Caterpillar / 9M-1974 |
| Part number without hyphen | 9 septembre 1974 |
| Product type | Hardened steel flat washer |
| Numéro de pièce | 9M-1974 |
| Inside diameter | 8.8 mm |
| Outside diameter | 16 mm |
| Thickness | 2 mm |
| Matériau | Hardened steel / low-alloy steel |
| Coating | Zinc phosphate + oil |
| Washer style | Flat |
Technical data above is limited to publicly verifiable CAT product information. Unlisted dimensions, pressure ratings, torque values and electrical characteristics are not assumed. Please verify the current official drawing and applicable serial number before installation.
| Equipment Type | CAT Models / Applications |
|---|---|
| Excavators | 320D, 330C, 336D (selected assemblies) |
| Mini Excavators | 303.5C, 304D CR, 305.5D |
| Integrated Toolcarriers | IT14G, IT28G |
| Rotary Drills | MD6200, MD6250 |
Fitment guidance: Model numbers are representative applications from the Caterpillar public product listing, not a guarantee for every production year or serial number. Engine and machine configurations vary, so final compatibility must be checked in CAT SIS or with the relevant parts diagram before shipment.
Do not replace a component based on one symptom alone. Inspection should include the adjacent parts, installation condition and available equipment diagnostics so that a new part is not installed into an unresolved system fault.
The original failure should be understood before new parts are installed. Clean sealing surfaces, correct fasteners, controlled tightening and inspection of adjacent parts are often as important as the replacement component itself. Use the applicable Caterpillar service manual for torque figures, clearance settings, calibration instructions and safe test procedures; those values can differ between engine arrangements.
For other components used in related engine or maintenance systems, review these RUIPO product listings. They are cross-references for sourcing and are not a claim of direct interchangeability:
Provides a stable bearing surface under a fastener head or nut, distributing clamp load over a controlled area. Washers are often treated as generic hardware, but the specified hardness, thickness, surface coating and hole size all matter in a critical Caterpillar joint.
Public Caterpillar parts data lists selected examples including Excavators: 320D, 330C, 336D (selected assemblies); Mini Excavators: 303.5C, 304D CR, 305.5D; Integrated Toolcarriers: IT14G, IT28G. This is an application guide only; confirm compatibility by serial number and engine arrangement.
Please confirm the original CAT part number, equipment/engine model, serial number, correct mounting arrangement and quantity. For repair jobs, ask whether related seals or hardware are required.
RUIPO Spare Parts can review the part number and your equipment information, check current stock and available packaging, and prepare a quotation with shipping details. Product availability is not guaranteed until confirmed.
Request a quote: Contact RUIPO Spare Parts with the CAT part number, required quantity, destination country and serial-number information. We can check the details before an export quotation is issued.
