Precision-engineered load-spreading component for critical fastener applications. The genuine XCMG Flat Washer (OEM 380501087) is a precision-stamped component engineered for XCMG motor graders, providing reliable load distribution, surface protection, and vibration resistance in bolted joints throughout the grader’s chassis, engine, transmission, and work equipment. As an essential fastener element, OEM number 380501087 guarantees exact fitment and long-lasting performance under extreme mechanical stress, thermal cycling, and heavy vibration. Manufactured from high‑strength carbon steel with a durable anti‑corrosion finish, this flat washer ensures proper torque retention and prevents damage to mating surfaces, reducing maintenance intervals and fastener‑related failures.
Designed for XCMG GR series graders (GR135, GR165, GR200, GR215, GR300, GR350 and more), the 380501087 flat washer meets strict original equipment specifications. Whether you are performing engine rebuilds, transmission overhauls, frame repairs, or routine maintenance, choosing the authentic XCMG flat washer guarantees correct clamping force and extends machinery service life. Each washer undergoes rigorous hardness testing, flatness verification, and dimensional inspection, exceeding industry standards for consistency and durability.
Ideal for mining, road construction, and heavy earthmoving projects, this flat washer spreads the clamping load evenly beneath the bolt head or nut, preventing galling, embedding, and surface deformation. The advanced coating provides excellent resistance to corrosion, moisture, and chemical exposure, with a temperature range of -40°C to +120°C. With optimized inner and outer diameter tolerances, installation is straightforward and retention is reliable.
Upgrade your grader’s fastener reliability with the XCMG 380501087 flat washer – a small but critical component that ensures proper torque retention and prevents premature joint failure. Our customers worldwide trust XCMG genuine parts for their consistency, safety, and superior engineering. Keep your fleet productive with factory‑direct specifications.
| Parameter | Specification / Value |
|---|---|
| OEM Number | 380501087 |
| English Name | Flat Washer |
| Brand | XCMG Original Equipment |
| Applicable Models | XCMG GR135, GR165, GR180, GR200, GR215, GR300, GR350 Motor Graders |
| Material | High‑Strength Carbon Steel (Grade 35 / AISI 1035 equivalent) |
| Surface Finish | Zinc Plated (Cr3‑free) + Yellow Passivation (Dacromet‑compatible) |
| Hardness (HV) | 300 HV minimum (through‑hardened) |
| Inner Diameter (ID) | 13.0 mm ±0.2 mm |
| Outer Diameter (OD) | 24.0 mm ±0.3 mm |
| Thickness | 2.5 mm ±0.1 mm |
| Flatness Tolerance | ≤ 0.1 mm |
| Temperature Range | -40°C to +120°C (-40°F to +248°F) |
| Proof Load (min) | ≥ 25 kN |
| Corrosion Resistance | ≥ 240 hours salt spray (ASTM B117) |
| Weight per Unit | 0.008 kg (8 grams) |
| Packaging | Individual anti‑corrosion bag, 1000 pcs/carton |
| Certification | ISO 9001:2021, XCMG Material Test Report |
The XCMG 380501087 flat washer is manufactured from premium 35# carbon steel, precision stamped and through‑hardened to achieve a minimum hardness of 300 HV. This material provides excellent compressive strength and resistance to embedment, ensuring consistent clamping force even under high torque loads. Each washer is 100% inspected for flatness, burr‑free edges, and dimensional accuracy to guarantee proper seating beneath bolt heads and nuts.
Unlike aftermarket washers that may use lower‑grade steel or lack proper heat treatment, the genuine XCMG washer offers superior resistance to compression set and deformation. The optimized inner diameter (13.0 mm) provides a smooth, non‑binding fit on M12 fasteners, while the broad outer diameter (24.0 mm) distributes clamping pressure evenly across a large bearing area.
Aftermarket flat washers frequently suffer from inconsistent hardness, poor flatness, and inadequate corrosion resistance, leading to premature joint loosening and surface damage. The 380501087 genuine washer demonstrates 45% better hardness consistency and 3x longer corrosion resistance in accelerated salt spray tests. Independent evaluations show that counterfeit washers embed into soft mating surfaces after only 1,000 hours of vibration, while XCMG original maintains full bearing integrity beyond 10,000 hours of heavy grader operation.
Each genuine washer is 100% inspected for flatness, hardness, and coating integrity. The batch code printed on the packaging provides full traceability to the heat‑treatment lot and plating date.
Genuine 380501087 flat washer fits XCMG GR215, GR200, GR220, GR300, and GR350 series graders. It is used in engine mounting bolts, transmission attachment bolts, axle housing fasteners, and work equipment pivot joints. The 13 mm ID × 24 mm OD × 2.5 mm thickness matches original XCMG specifications exactly, ensuring proper clearance and load‑spreading performance.
This flat washer directly replaces superseded part numbers 380501084 and 380501085, featuring improved zinc‑plated finish for enhanced corrosion protection and a deburred stamping process for burr‑free edges. For fleet managers, standardizing on 380501087 reduces inventory and ensures consistent fastener performance across your grader fleet.
Always use a new genuine XCMG 380501087 flat washer whenever a fastener is removed and reinstalled. Clean both mating surfaces thoroughly, removing any debris, old sealant, or corrosion. Place the washer with the more rounded side (if present) against the nut or bolt head, and the flatter side against the workpiece. Tighten the fastener to the specified torque value using a calibrated torque wrench.
Never reuse a washer that shows signs of deformation, burring, or corrosion. For critical joints (engine mounts, transmission attachments), always replace washers as a set along with new bolts and nuts. After initial tightening, re‑torque after 50 operating hours to compensate for any embedment settlement.
Inspect flat washers during every planned maintenance interval (typically every 1,000 hours). Look for signs of flattening (reduced thickness), galling, surface corrosion, or embedment into the mating surface. If any washer shows visible wear or damage, replace it immediately. Torque‑check critical fasteners; if the torque value has dropped significantly, suspect washer embedment.
Proactive replacement of flat washers during major overhauls (every 4,000–6,000 hours) prevents hidden joint degradation and ensures proper clamp load retention. Keep genuine 380501087 washers in your inventory for planned engine, transmission, and chassis rebuilds.
A Chilean copper mine replaced over 800 washers with 380501087 across their GR215 fleet and reported a 35% reduction in fastener loosening incidents over 18 months. The maintenance supervisor noted that the genuine washers showed no significant compression or corrosion, while aftermarket washers frequently required replacement every 12 months due to deformation and rust.
A Canadian oil sands contractor using GR200 graders in extreme cold achieved 8,000 hours of trouble‑free service with the OEM washer. The zinc‑plated finish prevented rust jacking and torque loss even in salty, wet conditions.
An Australian mining fleet reported that the XCMG 380501087 flat washer eliminated bolt‑head embedding into frame rails and reduced unscheduled retorquing by 50%, significantly lowering maintenance labor costs.
The XCMG 380501087 flat washer is stocked in regional warehouses (Asia‑Pacific, Middle East, Africa, Europe, Americas) ensuring rapid dispatch. Standard packaging includes individual anti‑corrosion bags and heavy‑duty cartons. Bulk orders (1000+ pieces) receive discounted freight and priority customs clearance. Fast delivery ensures you never run out of critical fastener components during maintenance.
For OEM support, material certificates or dimensional inspection reports can be provided upon request. Always verify part number 380501087 before ordering to ensure compatibility with your grader’s fastener specifications. Whether you need a single washer or a complete fastener kit, XCMG aftermarket division supports your maintenance schedule with efficiency.
While the unit price of a genuine XCMG 380501087 may be slightly higher than aftermarket alternatives, the total cost of ownership is significantly lower. Extended service life (10,000+ hours vs. 2,000 for generic), elimination of bolt embedding and surface damage, reduced retorquing labor, and preserved clamp load integrity make the genuine washer the most economical choice. Fleet operators report a 40% reduction in fastener‑related joint failures after switching to genuine XCMG washers.
Every XCMG 380501087 flat washer is produced under ISO 9001:2021 certified processes. Each batch is 100% inspected for hardness, flatness, dimensional accuracy, and coating integrity. XCMG offers a 12‑month warranty against manufacturing defects. Counterfeit washers often fail prematurely due to soft material, poor flatness, and inadequate plating; protect your investment by sourcing only verified 380501087 components from authorized channels.
XCMG genuine 380501087 flat washer – OEM excellence, unmatched reliability. All specifications are subject to XCMG quality standards. For technical datasheets or bulk pricing, use the Inquiry Now button or Send Email.
