Product Description
OEM hardened flat washer, part number 9M1974, manufactured by Caterpillar for electric lift truck assemblies. Features 0.34 inch inside diameter, 0.62 inch outside diameter, 0.08 inch thickness, phosphate and oil coating, through-hardened steel construction, and matches OEM service requirements. Cross-reference equivalent includes SK12050325JE. Designed for 5/16 inch mounting hardware.
Specifications
Material & Construction
| Material | Hardened steel |
Part Numbers
| OEM Part Number | 9M1974 |
| Cross-Reference Part Numbers | Supersedes CAT 9M-1974, replaces SK12050325JE |
Frequently Asked Questions
Q: What are the exact dimensions of the 9M1974 hardened flat washer?
A: The 9M1974 OEM washer has an inside diameter of 0.34 inch, outside diameter of 0.62 inch, and thickness of 0.08 inch. These dimensions are designed for 5/16 inch mounting hardware used in Caterpillar electric lift truck assemblies.
Q: What is the cross-reference part number for the 9M1974 washer?
A: The 9M1974 has one primary cross-reference: SK12050325JE. It also supersedes the earlier CAT designation 9M-1974. All three identifiers refer to the same OEM-specification washer.
Q: What material and coating does the 9M1974 washer use?
A: The 9M1974 is manufactured from through-hardened steel and features a phosphate and oil protective coating. This combination provides corrosion resistance and wear protection in electric lift truck operating conditions, matching original Caterpillar service requirements.
Q: Is the 9M1974 washer suitable for electric lift trucks from manufacturers other than Caterpillar?
A: The 9M1974 is an OEM part specific to Caterpillar electric lift trucks. While the dimensions and hardened steel construction are standard, verify fitment with your equipment before ordering. Equivalent washers for other manufacturers may have different part numbers.
Q: How does the through-hardened steel construction of the 9M1974 benefit its performance?
A: Through-hardening ensures the 9M1974 washer maintains its structural integrity under vibration, clamping force, and repeated load cycles typical in lift truck service. This construction prevents deformation and washout, keeping fastened assemblies secure over extended duty cycles.