4S9191 Washer fit Caterpillar
4S9191 Washer fit Caterpillar
- New aftermarket part
- 30 day returns
- Manufacturer's warranty
4S9191 Washer for Caterpillar Equipment
4S9191 is a flat washer used with 7/16-inch bolts in Caterpillar equipment, including articulated dump trucks, Challenger machines and the models listed below. It is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts). The part is listed in the C-Series Head Bolts category.
Fitment
The washer is used on the following Caterpillar equipment and models:
- Caterpillar articulated dump trucks
- Caterpillar Challenger machines
- Caterpillar 725
- Caterpillar 730
- Caterpillar 735
- Caterpillar D250E
- Caterpillar D300E
- Caterpillar 65C
- Caterpillar 65D
- Caterpillar MT735
- Caterpillar MT745
- Caterpillar MT755
Fitment should be checked against the equipment model and the part number used in the specific assembly. The listed application identifies Caterpillar machines on which this washer is used; it does not indicate that the washer is manufactured by Caterpillar.
Cross-reference numbers
- 4S9191
- 4S-9191
These numbers identify the same washer designation in the supplied part data. The hyphenated and non-hyphenated formats refer to the same 4S9191 part number.
Specifications
| Part type | Flat washer |
| Equipment manufacturer | Caterpillar |
| Category | C-Series Head Bolts |
| Compatible bolt size | 7/16 in |
| Material | Hardened steel |
| Minimum yield strength | 1000 MPa |
| Surface coating | Phosphate and oil |
| Inner diameter | 0.472 in |
| Outside diameter | 0.886 in |
| Thickness | 0.197 in |
| Weight | 0.1 lb |
| Length | 8.89 cm |
| Width | 15.24 cm |
| Depth | 1.27 cm |
The washer has a hardened-steel construction with a minimum stated yield strength of 1000 MPa. Its specified dimensions are an inner diameter of 0.472 inch, an outside diameter of 0.886 inch and a thickness of 0.197 inch. The compatible bolt size supplied for this part is 7/16 inch.





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