Lock Washer
| Machine | Model | Years / S/N |
|---|---|---|
| Tractor | OPTUM 360 | 2026 |
| Tractor | OPTUM 440 | 2026 |
| Tractor | OPTUM 390 | 2026 |
| Tractor | T7.360 XD | 2026 |
| Tractor | T7.440 XD | 2026 |
| Tractor | T7.390 XD | 2026 |
| Loader | WLK15 | — |
| Loader | WLK25 | — |
OEM Lock Washer Lock 6.4Mm Id X 10Mm Od X 0.90Mm Thick #8403761 - OEM Pin, Bolt, or Retainer Service Part for Heavy Equipment Repair For OEM-equivalent repair results, this replacement part addresses fastener fatigue, hardware loss, and poor component retention while serving repair of damaged pins, stripped hardware, or lost retainers during service. Frequently purchased for OEM pin replacement, hardware repair, retainer service, and Case equipment fastening maintenance repairs on construction machinery.
More Details
Part Number: 8403761
Application: Common service application: Hardware replacement component used to repair loose mounting points, missing fasteners, bent pins, or worn retention hardware.
Key Features:
- OEM replacement for missing, bent, worn, or stripped hardware components
- Helps restore secure retention, alignment, and dependable equipment assembly during service
- Direct-fit service hardware for repair and maintenance replacement work
Fits Case Models: Compatible with various Case construction equipment models - verify fitment before ordering
Replaces: Refer to manufacturer cross-reference if applicable
- Manufacturer part number
- 8403761
- Internal SKU
- IC:8403761
- Brand
- CASE CONSTRUCTION
- Condition
- OEM, new
- Category
- Case Construction
Free pickup at any of our 17 branches across Ohio, Indiana, Michigan, and Kentucky. Select your preferred branch at checkout.
30-day no-fault returns. Bought the wrong part? Send it back for a full refund — no restocking fees, no minimums.