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Representative image of an RCScrewZ stainless steel screw kit for Serpent Medius X25 Carbon/Steel 1/10 Electric (400049, 400050); exact kit contents vary by RC model.

Rustproof, Durable, Quality RCScrewZ Stainless Screw Kit ser109 for Serpent Medius X25 EP Carbon/Steel 1/10 Touring Car (#400049 / #400050) | SET - Affordable Quality | Quick Ship - by J-M SUPPLIES

Socket, Button, Flat Head, Set Screws for RCScrewZ Stainless Screw Kit ser109 for Serpent Medius X25 EP Carbon/Steel 1/10 Touring Car (#400049 / #400050) | RCX - by J-M SUPPLIES

RCScrewZ Stainless Steel Screw Kit ser109 for Serpent Medius X25 Carbon/Steel 1/10 Electric On-Road Touring Car (#400049, #400050) | SET

Why Choose This Kit

Key features and intended use for this kit.

Corrosion resistance

Rust-resistant Stainless Steel

Verified material

A2-70/A4-80 Stainless

Designed use

Model-specific maintenance & rebuilds

Stainless Screw Kit

RCScrewZ Stainless Steel Screw Kit ser109 for Serpent Medius X25 Carbon/Steel 1/10 Electric On-Road Touring Car (#400049, #400050) | SET

Name: RCScrewZ Stainless Steel Screw Kit ser109 for Serpent Medius X25 Carbon/Steel 1/10 Electric On-Road Touring Car (#400049, #400050) | SET
Brand: RCScrewZ
SKU: ser109
Price: 38.94 USD
Availability: InStock

RCScrewZSKU: ser109

Model-specific stainless hardware for maintaining, repairing, and rebuilding this RC vehicle.

Fits: Serpent Medius X25 Carbon/Steel 1/10 Electric (400049, 400050)
OEM / model: 400049, SER400049, 400050, SER400050

Regular price: $38.94
Sale price: $38.94
Regular price: ~~$39.95~~
Unit price: per

In stock

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Confirm this kit fits your RCMatch the RC model and OEM/model number shown above to your vehicle.

RC model: Serpent Medius X25 Carbon/Steel 1/10 Electric (400049, 400050)
OEM / model number: 400049, SER400049, 400050, SER400050

Kit type: Stainless Steel Screw Kit
Scale: 1:10
Power: Electric

View all verified kits for this model →

More compatibility details

RC brand: Serpent
Terrain: On-road
Vehicle class: Land
Kit SKU: ser109
Model series: Medius, Medius X25, X25, X25 Carbon, X25 Steel

Product information

Everything You Need Before Ordering

Review what is included, installation notes, shipping details, and complete kit information.

Kit Contents & Installation

What’s IncludedReview the product-specific hardware and confirmed kit contents.

Exact screw count and itemized kit contents: Not currently verified.

Hardware Coverage NotesCheck the product-specific hardware coverage before ordering.

Confirm any barrel, shoulder, or collared screw requirements against the listed kit contents.
Confirm any screw-pin or threaded-pin requirements against the listed kit contents.
Check separately whether required E-clips or body clips are listed.
Check separately whether required turnbuckles or hinge pins are listed.
Do not assume that every original fastener or coarse-thread location is covered. Compare the stated kit coverage and the original hardware before installation.

Installation & Model NotesImportant instructions and model-specific guidance.

Start threads by hand and seat screws fully to help prevent cross-threading.

Use blue threadlocker only on metal-to-metal threads; do not apply threadlocker to plastic.

After the first runs, inspect the hardware and retorque lightly as needed.

Details & Support

Kit Details Material, model-specific coverage, corrosion protection, and intended use.

Material: A2-70/A4-80 Stainless
Kit Coverage: Model-specific stainless fasteners for maintenance, repairs, and rebuilds
Corrosion Protection: Rust-resistant Stainless Steel
Designed Use: Model-specific maintenance & rebuilds

Shipping & Returns Handling time, current delivery estimate, and return policy.

Free shipping on all U.S. orders (USPS Priority Mail).

Ships within 1–2 business days (Mon–Fri); some Saturday shipments by 12:00 PM ET.

Most orders ship from Canton, MI 48187. APO/FPO/DPO & PO Boxes welcome.

Priority Mail typically delivers in 2–3 business days (estimates; not guaranteed).

Easy 30-day returns with prepaid USPS label; refunds issued within 3 business days after the return is received.

Over 99% positive over ~14,000 orders on eBay (last 12 months) — as of October 2025. View on eBay

Full Product Description Read the complete product specifications and details.

Exact RC Model Fitment

Compatible RC Model:
Serpent Medius X25 Carbon/Steel 1/10 Electric (400049, 400050)

Compatible RC Brand:
Serpent

RC Vehicle OEM / Model Number(s):
400049, SER400049, 400050, SER400050

RCScrewZ Kit Part Number:
ser109

Vehicle Compatibility Details

RC Vehicle OEM / Model Number(s): 400049, SER400049, 400050, SER400050
RC Chassis Compatibility: 400049: 2.25mm symmetrical carbon chassis; 400050: machined 1.2mm steel chassis.
Compatible Vehicle Type: 1/10 Electric On-Road Touring Car
Terrain Compatibility: On-Road
Compatible Scale: 1:10
Compatible Fuel Type: Electric

What Is Included

This model-specific stainless screw kit includes hardware for the verified RC chassis. Exact sizes, quantities, and screw styles vary by model.

Socket-head screws, with extras where applicable
Button-head screws, with extras where applicable
Flat-head or countersunk screws, with extras where applicable
Set screws, with extras where applicable
Matching nuts and washers, with extras where applicable
Bondhus short-arm hex wrenches for applicable kit sizes
Reusable plastic pit case for organized storage

Important: The exact hardware mix is determined by the verified chassis configuration. Not every kit requires every screw style listed above.

What Is Not Included

This kit does not include items that require a different fitment, material, or hardware design:

Barrel screws
Shoulder or collared screws
Screw pins or threaded pins
E-clips or body clips
Turnbuckles or hinge pins
Wood, plastic, or coarse-thread screws

Installation & Model Notes

Stainless Steel Screw Kit Compatibility: Serpent Medius X25 Carbon/Steel (400049, 400050)

Quick Fit Summary: 1/10 Electric On-Road Touring Car

Compatible Brand: Serpent
Compatible RC Model/OEM Numbers: 400049, 400050
Scale: 1/10
Power Source / Fuel Type: Electric
Drive Type: Not currently verified.
Vehicle Type: On-Road Touring Car
RC Model Terrain: On-road
Chassis: 400049: 2.25mm symmetrical carbon chassis; 400050: machined 1.2mm steel chassis.
Battery Chemistry: Not currently verified.
Battery / Cell Count: Not currently verified.
Production Era: Next Gen Era (2020–Present)
Release / Reference Date: 2025-04-23 official X25 Carbon/Steel release announcement.

This Kit Details: ser109 — Stainless Steel Screw Kit

Product Material: A2-70/A4-80 stainless steel hardware

Approximate screw-kit piece count: Not currently verified.

Exact hardware mix: Not currently verified.

OEM / Model Code / Alias Coverage: 400049, 400050; official retail/model-code aliases: SER400049, SER400050.

Model Family Coverage: Serpent Medius X25 Carbon/Steel (400049, 400050). Fitment is limited to this exact model and OEM.

Product Benefits:

Corrosion-resistant stainless hardware for durable repairs and maintenance.
Model-specific replacement hardware for the exact RC model listed above.

Fitment Note: Confirm the exact model and OEM before ordering. Do not assume fitment to other versions, related chassis, conversions or similarly named vehicles.

Installation: Follow the RC manufacturer’s assembly and maintenance instructions. Confirm each fastener or bearing location before replacement.

Search-Friendly Notes: Serpent Medius X25 Carbon/Steel 1/10 Electric On-Road Touring Car; Stainless Steel Screw Kit; RCScrewZ ser109; OEM 400049, 400050.