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Description
S04019-03 – SCAG 5/16"-18 Serrated Flange Hex Nut, Zinc (Genuine OEM Part)
The SCAG S04019-03 is a genuine OEM 5/16"-18 serrated flange hex nut designed to securely fasten components on SCAG commercial mowing equipment and grass catcher systems. Manufactured to SCAG's exact specifications, this flange nut features an integrated serrated washer face that helps resist loosening caused by vibration while distributing clamping force evenly across the mounting surface.
Constructed from high-strength steel with a corrosion-resistant zinc finish, the S04019-03 delivers reliable fastening performance and long service life in demanding commercial landscaping applications.
Product Details
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Manufacturer Part Number: S04019-03
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Brand: SCAG
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Part Type: Serrated Flange Hex Nut
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Thread Size: 5/16"-18 UNC
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Material: High-Strength Steel
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Finish: Zinc-Plated
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OEM Status: Genuine SCAG OEM Part
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Installation: Direct OEM Replacement
Key Features
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Genuine SCAG OEM hardware
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Integrated serrated flange helps prevent loosening
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5/16"-18 coarse-thread design
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High-strength steel construction
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Corrosion-resistant zinc finish
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Designed for commercial-duty applications
Function
The SCAG S04019-03 Serrated Flange Nut securely fastens mounting brackets, guards, covers, and grass catcher components. Its serrated flange eliminates the need for a separate lock washer while providing superior resistance to vibration.
Fits the Following SCAG Models
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GC-3B Fabric 3-Bag Grass Catcher (S/N K3300001–K3399999)
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GC-CS Clam Shell Grass Catcher (S/N K3400001–K3499999)
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GC-SCZ48/52 Fabric 3-Bag Grass Catcher (S/N J2400001–J2499999)
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GC-SCZ48/52-CS Clam Shell Grass Catcher (S/N J2900001–J2999999)
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GC-SFZ Grass Catcher (S/N E1900001–E1999999)
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GC-SFZ Grass Catcher (S/N E8800001–E8899999)
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GC-SSZ Grass Catcher (S/N 30000)
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GC-SSZ-42 Grass Catcher (S/N 40000)
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GC-SSZ-48 (S/N 3660001–3669999)
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GC-SSZ-48 Grass Catcher (S/N 40000)
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GC-SSZ-5BS Grass Catcher (S/N 40000)
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GC-SSZ-6KH (S/N 3670001–3679999)
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GC-STC Grass Catcher (S/N 6910001–6919999)
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GC-STC Grass Catcher (S/N 8620001–8629999)
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GC-STC Grass Catcher (S/N 9490001–9499999)
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GC-STC Grass Catcher (S/N A7700001–A7799999)
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GC-STC Grass Catcher (S/N B8100001–B8199999)
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GC-STC Grass Catcher (S/N C9100001–C9199999)
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GC-STC Grass Catcher (S/N E1700001–E1799999)
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GC-STC Grass Catcher with P/N 9015
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GC-STC-61 Grass Catcher (S/N 8780001–8789999)
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GC-STC-61V Fabric 3-Bag Grass Catcher (S/N G8000001–G8099999)
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GC-STC-61V Fabric 3-Bag Grass Catcher (S/N J2500001–J2599999)
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GC-STC-CS Clam Shell Grass Catcher (S/N A8100001–A8199999)
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GC-STC-CS Clam Shell Grass Catcher (S/N 9540001–9549999)
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GC-STC-CS Clam Shell Grass Catcher (S/N B9000001–B9099999)
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GC-STC-CS Clam Shell Grass Catcher (S/N D0000001–D0099999)
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GC-STC-CS Clam Shell Grass Catcher (S/N E1500001–E1599999)
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GC-STC-CS Grass Catcher (S/N 8650001–8659999)
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GC-STC-CS61 Grass Catcher (S/N 8790001–8799999)
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GC-STC-CSV Clam Shell Grass Catcher (S/N B9100001–B9199999)
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GC-STC-CSV Clam Shell Grass Catcher (S/N D0100001–D0199999)
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GC-STC-CSV Clam Shell Grass Catcher (S/N E1600001–E1699999)
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GC-STC-CSV Clam Shell Grass Catcher (S/N G8300001–G8399999)
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GC-STC-CSV Clam Shell Grass Catcher (S/N J2800001–J2899999)
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GC-STC-V Grass Catcher (S/N B8200001–B8299999)
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GC-STC-V Grass Catcher (S/N C9200001–C9299999)
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GC-STC-V Grass Catcher (S/N E1800001–E1899999)
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GC-STC-V Grass Catcher (S/N G7900001–G7999999)
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GC-STC-V Grass Catcher (S/N J2300001–J2399999)
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GC-STT-52 Grass Catcher Series
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GC-STT-52V Grass Catcher Series
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GC-STT-61 Grass Catcher Series
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GC-STT-61V Grass Catcher Series
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GC-STT-72 Grass Catcher Series
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GC-STT-CS52 Clam Shell Grass Catcher Series
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GC-STT-CS52V Clam Shell Grass Catcher Series
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GC-STT-CS61 Clam Shell Grass Catcher Series
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GC-STT-CS61V Clam Shell Grass Catcher Series
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GC-STT-CS72 Clam Shell Grass Catcher Series
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GC-STT/SCZ-61V Fabric 3-Bag Grass Catcher (S/N F6800001–F6899999)
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GC-STT/SCZ-61V Fabric 3-Bag Grass Catcher (S/N G8200001–G8299999)
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GC-STT/SCZ-61V Fabric 3-Bag Grass Catcher (S/N J2700001–J2799999)
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GC-STT/SCZ-CS 61V Clam Shell Grass Catcher (S/N F6900001–F6999999)
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GC-STT/SCZ-CS 61V Clam Shell Grass Catcher (S/N G8600001–G8699999)
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GC-STT/SCZ-CS61V Clam Shell Grass Catcher (S/N J3200001–J3299999)
Who Is This For?
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Commercial landscapers
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SCAG grass catcher owners
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Lawn care professionals
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Equipment repair technicians
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Fleet maintenance departments
Recommended Property Size
Suitable for residential, estate, commercial, municipal, golf course, sports field, and professional turf maintenance equipment equipped with compatible SCAG grass catcher systems.
Pros
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Genuine SCAG OEM quality
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Serrated flange eliminates the need for a lock washer
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High-strength steel construction
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Zinc-plated for corrosion resistance
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Excellent vibration resistance
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Direct OEM replacement
Cons
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Fits only 5/16"-18 UNC threaded applications
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Designed specifically for compatible SCAG assemblies
Comparison – Genuine SCAG OEM vs Aftermarket
SCAG S04019-03 OEM
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Exact factory dimensions
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Premium steel construction
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Precision thread engagement
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Superior long-term reliability
Aftermarket Alternatives
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Thread tolerances may vary
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Lower-quality materials
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Reduced holding strength under vibration
Why Buy from Barry's Power Equipment?
Barry's Power Equipment supplies genuine SCAG OEM replacement parts trusted by commercial landscapers and equipment owners.
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Genuine SCAG OEM parts
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Authorized SCAG dealer
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Fast nationwide shipping
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Competitive pricing
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Expert parts support
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Extensive OEM parts inventory
