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S04021-05 – SCAG 3/8"-16 Elastic Stop Lock Nut (Genuine OEM Part)

Name: S04021-05 – SCAG 3/8"-16 Elastic Stop Lock Nut (Genuine OEM Part)
Brand: SCAG (FLORIDA OUTDOOR EQ.)
SKU: S04021-05
Price: 0.26 USD
Availability: InStock

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$0.26

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Barry's Power Equipment – Return Policy

Returning or exchanging a product at Barry’s Power Equipment is simple. Please review the information below carefully to ensure your return is processed correctly and without delay.

How to Return Your Order from BarrysPowerEquipment.com

To begin a return, access our Returns Portal as a guest or by signing into your Barry’s Power Equipment account.

Return Steps:

Enter your seven-digit order number and the email address associated with the order.
If the order is eligible, select the item you wish to return.
Follow the return instructions provided.

Note: Some items are not eligible for portal-based returns and require Return Authorization (RA). Additional restrictions may apply.

Return Authorization (RA) Guide

Certain items require Return Authorization (RA) before being returned.

If the Returns Portal indicates your item is not eligible:

Submit a request through our Contact Us form.
A Barry’s Power Equipment representative will contact you within 1–3 business days (Monday–Friday).
If approved, you will receive return instructions or alternative resolution options.

Barry’s Power Equipment reserves the right to approve or deny any return request.

Returned Item & Merchandise Requirements

All approved returns must include:

Original packaging (boxes, Styrofoam, bubble wrap, plastic bags, etc.)
Original and intact UPC barcode (removal voids return eligibility)
Original packing slip
All accessories (cords, batteries, remotes, tools, cases, etc.)
All manufacturer documentation (manuals, warranty cards, registration materials)

Barry’s Power Equipment reserves the right to inspect all returned items prior to issuing any refund or replacement.

Return Shipping Costs

All shipping costs, including original and return shipping, are the responsibility of the customer. Shipping charges are non-refundable under all circumstances.

Return Shipping Address

Barry’s Power Equipment – Returns
2715 Fowler Street
Fort Myers, FL 33901

Customer Support: 239-332-1305

Return Restrictions & Conditions

Defective Merchandise

(Return Authorization Required)

Defective items reported within 30 days of shipment may be eligible for exchange at the sole discretion of Barry’s Power Equipment.

Shipping costs are non-refundable.

Defects reported after 30 days must be handled through manufacturer warranty service.

Non-Defective Merchandise

(Return Authorization Required)

Non-defective items returned within 30 days of shipment may be eligible for a refund.

Returns may be subject to a restocking fee of up to 15%.

Shipping charges are non-refundable.

Return shipping costs are the responsibility of the customer.

Electrical & Electronic Parts

(No Returns or Exchanges)
(Return Authorization Required for Warranty Claims Only)

Due to the sensitive nature of electrical and electronic components, all sales of electrical and electronic parts are final.

Electrical and electronic parts are not eligible for return, refund, or exchange unless the item is received damaged or is verified by the manufacturer to be defective under the applicable manufacturer's warranty.

Electrical and electronic parts that have been installed, connected, programmed, modified, tested, used, or show any signs of installation or use cannot be returned or exchanged.

Barry’s Power Equipment is not responsible for incorrect diagnosis, improper installation, compatibility issues, or damage caused by misuse, improper installation, or failure of another component.

Warranty claims for defective electrical or electronic parts are subject to the manufacturer's warranty policies and may require inspection and testing before any warranty replacement or credit is approved.

Barry’s Power Equipment reserves the right to inspect any returned electrical or electronic component before determining warranty eligibility.

Examples of non-returnable electrical and electronic parts include, but are not limited to:

Ignition Coils
Ignition Modules
CDI Boxes
ECU / Electronic Control Modules (ECM)
Stators
Voltage Regulators / Rectifiers
Starter Motors
Solenoids
Relays
Sensors
Safety Switches
Wiring Harnesses
Electric PTO Clutches
Control Boards
Displays
Circuit Boards
Electric Fuel Pumps
Alternators
Any other electrical or electronic component.

Gasoline-Powered Equipment

(Return Authorization Required)

Gasoline-powered items cannot be returned once fuel has been added.

If fuel has been added, the unit must be serviced through an authorized service center under manufacturer warranty.

Refer to the product manual for warranty details.

Oversized & Freight Items

(Return Authorization Required)

Certain oversized or heavy items require special handling or freight shipping and may not be eligible for standard Returns Portal processing.

Customers must contact Barry’s Power Equipment directly for return evaluation.

If the issue can be resolved through troubleshooting, repair, or replacement parts, a return may not be approved.

Non-defective oversized or freight returns are subject to restocking fees and all shipping costs are the customer’s responsibility.

Barry’s Power Equipment Customer Support: 239-332-1305

Free-Good Promotions

If your purchase included a FREE promotional item, that item must be returned with the original product to receive full refund credit.

Failure to return the promotional item may result in a partial or denied refund.

Other Promotions

Barry’s Power Equipment reserves the right to change, deny, or revoke any return or refund involving promotional offers, both in-store and online.

Misclassified Returns

If a return is submitted as non-defective but arrives damaged, incomplete, or defective, a restocking fee of up to 15% of the purchase price may apply.

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🚚 Shipping and Returns

Barry's Power Equipment – Return Policy

Returning or exchanging a product at Barry’s Power Equipment is simple. Please review the information below carefully to ensure your return is processed correctly and without delay.

How to Return Your Order from BarrysPowerEquipment.com

To begin a return, access our Returns Portal as a guest or by signing into your Barry’s Power Equipment account.

Return Steps:

Enter your seven-digit order number and the email address associated with the order.
If the order is eligible, select the item you wish to return.
Follow the return instructions provided.

Note: Some items are not eligible for portal-based returns and require Return Authorization (RA). Additional restrictions may apply.

Return Authorization (RA) Guide

Certain items require Return Authorization (RA) before being returned.

If the Returns Portal indicates your item is not eligible:

Submit a request through our Contact Us form.
A Barry’s Power Equipment representative will contact you within 1–3 business days (Monday–Friday).
If approved, you will receive return instructions or alternative resolution options.

Barry’s Power Equipment reserves the right to approve or deny any return request.

Returned Item & Merchandise Requirements

All approved returns must include:

Original packaging (boxes, Styrofoam, bubble wrap, plastic bags, etc.)
Original and intact UPC barcode (removal voids return eligibility)
Original packing slip
All accessories (cords, batteries, remotes, tools, cases, etc.)
All manufacturer documentation (manuals, warranty cards, registration materials)

Barry’s Power Equipment reserves the right to inspect all returned items prior to issuing any refund or replacement.

Return Shipping Costs

All shipping costs, including original and return shipping, are the responsibility of the customer. Shipping charges are non-refundable under all circumstances.

Return Shipping Address

Barry’s Power Equipment – Returns
2715 Fowler Street
Fort Myers, FL 33901

Customer Support: 239-332-1305

Return Restrictions & Conditions

Defective Merchandise

(Return Authorization Required)

Defective items reported within 30 days of shipment may be eligible for exchange at the sole discretion of Barry’s Power Equipment.

Shipping costs are non-refundable.

Defects reported after 30 days must be handled through manufacturer warranty service.

Non-Defective Merchandise

(Return Authorization Required)

Non-defective items returned within 30 days of shipment may be eligible for a refund.

Returns may be subject to a restocking fee of up to 15%.

Shipping charges are non-refundable.

Return shipping costs are the responsibility of the customer.

Electrical & Electronic Parts

(No Returns or Exchanges)
(Return Authorization Required for Warranty Claims Only)

Due to the sensitive nature of electrical and electronic components, all sales of electrical and electronic parts are final.

Electrical and electronic parts that have been installed, connected, programmed, modified, tested, used, or show any signs of installation or use cannot be returned or exchanged.

Barry’s Power Equipment is not responsible for incorrect diagnosis, improper installation, compatibility issues, or damage caused by misuse, improper installation, or failure of another component.

Barry’s Power Equipment reserves the right to inspect any returned electrical or electronic component before determining warranty eligibility.

Examples of non-returnable electrical and electronic parts include, but are not limited to:

Ignition Coils
Ignition Modules
CDI Boxes
ECU / Electronic Control Modules (ECM)
Stators
Voltage Regulators / Rectifiers
Starter Motors
Solenoids
Relays
Sensors
Safety Switches
Wiring Harnesses
Electric PTO Clutches
Control Boards
Displays
Circuit Boards
Electric Fuel Pumps
Alternators
Any other electrical or electronic component.

Gasoline-Powered Equipment

(Return Authorization Required)

Gasoline-powered items cannot be returned once fuel has been added.

If fuel has been added, the unit must be serviced through an authorized service center under manufacturer warranty.

Refer to the product manual for warranty details.

Oversized & Freight Items

(Return Authorization Required)

Certain oversized or heavy items require special handling or freight shipping and may not be eligible for standard Returns Portal processing.

Customers must contact Barry’s Power Equipment directly for return evaluation.

If the issue can be resolved through troubleshooting, repair, or replacement parts, a return may not be approved.

Non-defective oversized or freight returns are subject to restocking fees and all shipping costs are the customer’s responsibility.

Barry’s Power Equipment Customer Support: 239-332-1305

Free-Good Promotions

If your purchase included a FREE promotional item, that item must be returned with the original product to receive full refund credit.

Failure to return the promotional item may result in a partial or denied refund.

Other Promotions

Barry’s Power Equipment reserves the right to change, deny, or revoke any return or refund involving promotional offers, both in-store and online.

Misclassified Returns

If a return is submitted as non-defective but arrives damaged, incomplete, or defective, a restocking fee of up to 15% of the purchase price may apply.

Estimated Delivery: Sep 13 - Sep 17

Return within 30 days of purchase. Taxes are non-refundable.

Availability: In Stock Unavailable

SKU: S04021-05

Type: Parts

Vendor: SCAG (FLORIDA OUTDOOR EQ.)

Categories:

Parts

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Description
Additional Information
Shipping & Return
Reviews

S04021-05 – SCAG 3/8"-16 Elastic Stop Lock Nut (Genuine OEM Part)

The SCAG S04021-05 Elastic Stop Lock Nut is a genuine OEM 3/8"-16 nylon insert lock nut designed to securely fasten critical components on SCAG commercial mowers and grass catcher systems. Featuring an integrated nylon locking insert, this heavy-duty fastener resists loosening caused by constant vibration, shock loads, and prolonged operation, helping maintain safe and reliable equipment performance.

Manufactured from high-strength steel with a corrosion-resistant zinc finish, the S04021-05 provides an exact OEM fit and long-lasting durability for demanding commercial mowing applications.

Product Details

Manufacturer Part Number: S04021-05
Brand: SCAG
Part Type: Elastic Stop Lock Nut
Thread Size: 3/8"-16 UNC
Style: Nylon Insert Hex Lock Nut
Material: High-Strength Steel
Finish: Zinc-Plated
OEM Status: Genuine SCAG OEM Part
Installation: Direct OEM Replacement

Key Features

Genuine SCAG OEM hardware
Nylon insert prevents vibration loosening
Heavy-duty commercial construction
Corrosion-resistant zinc-plated finish
Precision-machined 3/8"-16 threads
Direct replacement for original SCAG hardware

Function

The SCAG S04021-05 Lock Nut is used throughout mower and grass catcher assemblies to securely fasten components while maintaining locking force during continuous vibration and heavy-duty mowing conditions.

Fits These SCAG Models

GC-3B Fabric 3-Bag Grass Catcher (S/N K3300001–K3399999)
GC-CS Clam Shell Grass Catcher (S/N K3400001–K3499999)
GC-SCZ48/52 Fabric 3-Bag Grass Catcher (S/N J2400001–J2499999)
GC-SCZ48/52-CS Clam Shell Grass Catcher (S/N J2900001–J2999999)
GC-SFZ Grass Catcher (S/N E1900001–E1999999)
GC-SFZ Grass Catcher (S/N E8800001–E8899999)
GC-SSZ-42 Grass Catcher, SSZ (S/N 40000)
GC-SSZ-48 Grass Catcher, SSZ (S/N 40000)
GC-SSZ-5BS Grass Catcher, SSZ (S/N 40000)
GC-STC Grass Catcher (S/N 6910001–6919999)
GC-STC Grass Catcher (S/N 8620001–8629999)
GC-STC Grass Catcher (S/N 9490001–9499999)
GC-STC Grass Catcher (S/N A7700001–A7799999)
GC-STC Grass Catcher (S/N B8100001–B8199999)
GC-STC Grass Catcher (S/N C9100001–C9199999)
GC-STC Grass Catcher (S/N E1700001–E1799999)
GC-STC Grass Catcher (P/N 9015)
GC-STC-61 Grass Catcher (S/N 8780001–8789999)
GC-STC-61V Fabric 3-Bag Grass Catcher (S/N G8000001–G8099999)
GC-STC-61V Fabric 3-Bag Grass Catcher (S/N J2500001–J2599999)
GC-STC-CS Clam Shell Grass Catcher (S/N A8100001–A8199999)
GC-STC-CS Clam Shell Grass Catcher (S/N 9540001–9549999)
GC-STC-CS Clam Shell Grass Catcher (S/N B9000001–B9099999)
GC-STC-CS Clam Shell Grass Catcher (S/N D0000001–D0099999)
GC-STC-CS Clam Shell Grass Catcher (S/N E1500001–E1599999)
GC-STC-CS Grass Catcher (S/N 8650001–8659999)
GC-STC-CS61 Grass Catcher (S/N 8790001–8799999)
GC-STC-CSV Clam Shell Grass Catcher (S/N B9100001–B9199999)
GC-STC-CSV Clam Shell Grass Catcher (S/N D0100001–D0199999)
GC-STC-CSV Clam Shell Grass Catcher (S/N E1600001–E1699999)
GC-STC-CSV Clam Shell Grass Catcher (S/N G8300001–G8399999)
GC-STC-CSV Clam Shell Grass Catcher (S/N J2800001–J2899999)
GC-STC-V Grass Catcher (S/N B8200001–B8299999)
GC-STC-V Grass Catcher (S/N C9200001–C9299999)
GC-STC-V Grass Catcher (S/N E1800001–E1899999)
GC-STC-V Grass Catcher (S/N G7900001–G7999999)
GC-STC-V Grass Catcher (S/N J2300001–J2399999)
GC-STT-52 (S/N 8630001–8639999)
GC-STT-52 (S/N E0500001–E0599999)
GC-STT-52 Fabric 3-Bag Grass Catcher (S/N G7300001–G7399999)
GC-STT-52 Grass Catcher (S/N 9510001–9519999)
GC-STT-52 Grass Catcher (S/N A7800001–A7899999)
GC-STT-52 Grass Catcher (S/N B8500001–B8599999)
GC-STT-52 Grass Catcher (S/N C9500001–C9599999)
GC-STT-52 Grass Catcher (P/N 9012)
GC-STT-52 Grass Catcher (P/N 9016)
GC-STT-52V Fabric 3-Bag Grass Catcher (S/N E0600001–E0699999)
GC-STT-52V Grass Catcher (S/N B8600001–B8699999)
GC-STT-52V Grass Catcher (S/N C9600001–C9699999)
GC-STT-61 (S/N 8640001–8649999)
GC-STT-61 Clam Shell Grass Catcher (S/N E0700001–E0799999)
GC-STT-61 Fabric 3-Bag Grass Catcher (S/N G7400001–G7499999)
GC-STT-61 Grass Catcher (S/N 9520001–9529999)
GC-STT-61 Grass Catcher (S/N A7900001–A7999999)
GC-STT-61 Grass Catcher (S/N B8700001–B8799999)
GC-STT-61 Grass Catcher (S/N C9700001–C9799999)
GC-STT-61 Grass Catcher (P/N 9013)
GC-STT-61 Grass Catcher (P/N 9017)
GC-STT-61V Grass Catcher (S/N B8800001–B8899999)
GC-STT-61V Grass Catcher (S/N C9800001–C9899999)
GC-STT-61V Grass Catcher (S/N E0800001–E0899999)
GC-STT-72 Clam Shell Grass Catcher (S/N E0900001–E0999999)
GC-STT-72 Grass Catcher (S/N 9530001–9539999)
GC-STT-72 Grass Catcher (S/N A8000001–A8099999)
GC-STT-72 Grass Catcher (S/N B8900001–B8999999)
GC-STT-72 Grass Catcher (S/N C9900001–C9999999)
GC-STT-CS52 (S/N 8660001–8669999)
GC-STT-CS52 (S/N A8200001–A8299999)
GC-STT-CS52 Clam Shell Grass Catcher (S/N 9560001–9569999)
GC-STT-CS52 Clam Shell Grass Catcher (S/N B9400001–B9499999)
GC-STT-CS52 Clam Shell Grass Catcher (S/N D0400001–D0499999)
GC-STT-CS52 Clam Shell Grass Catcher (S/N E1000001–E1099999)
GC-STT-CS52 Clam Shell Grass Catcher (S/N G7700001–G7799999)
GC-STT-CS52V Clam Shell Grass Catcher (S/N B9500001–B9599999)
GC-STT-CS52V Clam Shell Grass Catcher (S/N D0500001–D0599999)
GC-STT-CS52V Clam Shell Grass Catcher (S/N E1100001–E1199999)
GC-STT-CS61 (S/N 8670001–8679999)
GC-STT-CS61 (S/N A8300001–A8399999)
GC-STT-CS61 Clam Shell Grass Catcher (S/N 9570001–9579999)
GC-STT-CS61 Clam Shell Grass Catcher (S/N B9600001–B9699999)
GC-STT-CS61 Clam Shell Grass Catcher (S/N D0600001–D0699999)
GC-STT-CS61 Clam Shell Grass Catcher (S/N E1200001–E1299999)
GC-STT-CS61 Clam Shell Grass Catcher (S/N G7800001–G7899999)
GC-STT-CS61V Clam Shell Grass Catcher (S/N B9700001–B9799999)
GC-STT-CS61V Clam Shell Grass Catcher (S/N D0700001–D0799999)
GC-STT-CS61V Clam Shell Grass Catcher (S/N E1300001–E1399999)
GC-STT-CS72 (S/N A8400001–A8499999)
GC-STT-CS72 Clam Shell Grass Catcher (S/N 9580001–9589999)
GC-STT-CS72 Clam Shell Grass Catcher (S/N B9800001–B9899999)
GC-STT-CS72 Clam Shell Grass Catcher (S/N D0800001–D0899999)
GC-STT-CS72 Clam Shell Grass Catcher (S/N E1400001–E1499999)
GC-STT/SCZ-61V Fabric 3-Bag Grass Catcher (S/N F6800001–F6899999)
GC-STT/SCZ-61V Fabric 3-Bag Grass Catcher (S/N G8200001–G8299999)
GC-STT/SCZ-61V Fabric 3-Bag Grass Catcher (S/N J2700001–J2799999)
GC-STT/SCZ-CS61V Clam Shell Grass Catcher (S/N F6900001–F6999999)
GC-STT/SCZ-CS61V Clam Shell Grass Catcher (S/N G8600001–G8699999)
GC-STT/SCZ-CS61V Clam Shell Grass Catcher (S/N J3200001–J3299999)
GC-STWC-61 Grass Catcher (S/N 9500001–9509999)
GC-STWC-61 Grass Catcher (S/N A9200001–A9299999)
GC-STWC-61 Grass Catcher (S/N B8300001–B8399999)

Who Is This For?

Commercial landscapers
Lawn care professionals
Municipal maintenance crews
SCAG equipment owners
Equipment repair technicians

Recommended Property Size

Suitable for residential, estate, commercial, municipal, sports field, and golf course mowing applications equipped with compatible SCAG grass catcher systems.

Pros

Genuine SCAG OEM quality
Heavy-duty nylon locking insert
Excellent vibration resistance
Corrosion-resistant zinc-plated finish
Precise OEM fit
Long service life

Cons

Fits only compatible 3/8"-16 threaded applications
Nylon insert should be replaced if locking performance decreases after repeated reuse

Comparison – Genuine SCAG OEM vs Aftermarket

SCAG S04021-05 OEM

Exact factory specifications
Superior thread accuracy
Reliable locking performance
Designed for commercial-duty equipment

Aftermarket Alternatives

May have inconsistent thread tolerances
Reduced vibration resistance
Variable material quality

Why Buy from Barry's Power Equipment?

Barry's Power Equipment supplies genuine SCAG OEM replacement parts backed by knowledgeable customer support.

Genuine SCAG OEM parts
Authorized SCAG dealer
Fast nationwide shipping
Competitive pricing
Professional technical assistance
Extensive OEM parts inventory

S04021-05 – SCAG 3/8"-16 Elastic Stop Lock Nut (Genuine OEM Part)

Barry's Power Equipment – Return Policy

How to Return Your Order from BarrysPowerEquipment.com

Return Steps:

Return Authorization (RA) Guide

Returned Item & Merchandise Requirements

Return Shipping Costs

Return Shipping Address

Return Restrictions & Conditions

Defective Merchandise

Non-Defective Merchandise

Electrical & Electronic Parts

Gasoline-Powered Equipment

Oversized & Freight Items

Free-Good Promotions

Other Promotions

Misclassified Returns

Barry's Power Equipment – Return Policy

How to Return Your Order from BarrysPowerEquipment.com

Return Steps:

Return Authorization (RA) Guide

Returned Item & Merchandise Requirements

Return Shipping Costs

Return Shipping Address

Return Restrictions & Conditions

Defective Merchandise

Non-Defective Merchandise

Electrical & Electronic Parts

Gasoline-Powered Equipment

Oversized & Freight Items

Free-Good Promotions

Other Promotions

Misclassified Returns

Have a question?

Description

S04021-05 – SCAG 3/8"-16 Elastic Stop Lock Nut (Genuine OEM Part)

Product Details

Key Features

Function

Fits These SCAG Models

Who Is This For?

Recommended Property Size

Pros

Cons

Comparison – Genuine SCAG OEM vs Aftermarket

SCAG S04021-05 OEM

Aftermarket Alternatives

Why Buy from Barry's Power Equipment?

Additional Information

Shipping & Return

Reviews

Customer Reviews

Customer Reviews

Related Products

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S04021-05 – SCAG 3/8"-16 Elastic Stop Lock Nut (Genuine OEM Part)

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