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Description
S04003-26 – SCAG 3/8"-16 x 4.00" Carriage Bolt (Round Head, Square Neck) (Genuine OEM Part)
The SCAG S04003-26 is a genuine OEM 3/8"-16 x 4.00-inch Carriage Bolt (Round Head, Square Neck) designed for securing structural components on SCAG commercial lawn equipment. Its smooth round head provides a clean, low-profile finish, while the square neck locks into the mounting surface to prevent the bolt from rotating during tightening, allowing for quick and secure installation.
Manufactured from high-strength steel and engineered to SCAG's exact OEM specifications, the S04003-26 Carriage Bolt delivers reliable clamping force and long-lasting durability for mower decks, grass catcher assemblies, guards, brackets, and other heavy-duty applications exposed to constant vibration and demanding operating conditions.
Product Details
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Manufacturer Part Number: S04003-26
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Brand: SCAG
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Part Type: Carriage Bolt (Round Head Square Neck)
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Thread Size: 3/8"-16 UNC
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Length: 4.00 Inches
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Head Style: Round Head
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Neck Type: Square Neck
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Material: High-Strength Steel
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Finish: Corrosion-Resistant Zinc Plating
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OEM Status: Genuine SCAG OEM Part
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Installation: Direct OEM Replacement
Compatible SCAG Models
The SCAG S04003-26 Carriage Bolt is compatible with a wide variety of SCAG commercial mower models, including:
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SCR42-25CH (S/N 6430001–6439999, 7530001–7539999)
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SCR48-25CH (S/N 6460001–6469999, 7540001–7549999)
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SCR48-25CH Cougar (S/N 5590001–559999)
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SCR48-27KA (S/N 6450001–6459999, 7550001–7559999)
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SCR52-25CH (S/N 6480001–6489999, 7560001–7569999)
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SCR52-27KA (S/N 7160001–7169999, 7570001–7579999)
SCAG Cheetah Series
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SCZ48V-22FX
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SCZ48V-23CV / 23CV-EFI
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SCZ48V-25CV
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SCZ48V-26BS
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SCZ48V-28BS
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SCZ48V-691FX
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SCZ52V-23FX
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SCZ52V-25CV / 25CV-EFI
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SCZ52V-26BS
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SCZ52V-27CV
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SCZ52V-28BS
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SCZ52V-730FX
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SCZ61RD-31FX
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SCZ61RD-921FX
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SCZ61V-27FX
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SCZ61V-29CV-EFI
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SCZ61V-31FX
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SCZ61V-32BV
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SCZ61V-32CV
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SCZ61V-34CV-EFI
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SCZ61V-34KH
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SCZ61V-35CV-EFI
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SCZ61V-36BV
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SCZ61V-850FX
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SCZ61V-921FX
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SCZ72V-31FX
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SCZ72V-32CV
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SCZ72V-34CV-EFI
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SCZ72V-34FX
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SCZ72V-34KH
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SCZ72V-35CV-EFI
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SCZ72V-36BV
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SCZ72V-921FX
SCAG Freedom Z Series
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SFZ48-18FR
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SFZ48-18FS
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SFZ48-19KA
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SFZ48-20FS
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SFZ48-21FR
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SFZ48-22KT
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SFZ48-24BS
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SFZ48-26BS
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SFZ48-600FS
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SFZ52-19KA
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SFZ52-20FS
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SFZ52-23FS
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SFZ52-24KT
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SFZ52-25BS
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SFZ52-26BS
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SFZ52-27BS
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SFZ52-600FS
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SFZ52-691FS
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SFZ61-24FS
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SFZ61-27BS
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SFZ61-28BS
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SFZ61-30BS
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SFZ61-730FS
Always verify your model and serial number before ordering to ensure correct fitment.
Key Features
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Genuine SCAG OEM carriage bolt
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Square neck prevents bolt rotation during tightening
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Smooth round head provides a clean finished appearance
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Heavy-duty high-strength steel construction
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Zinc-plated for corrosion resistance
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Designed for demanding commercial mower applications
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Direct replacement with factory fit and performance
Function
The SCAG S04003-26 Carriage Bolt securely fastens mower deck components, structural brackets, grass catcher assemblies, and other equipment while the square neck prevents spinning during installation. Its long 4-inch design provides excellent clamping strength for thicker assemblies and high-load applications.
Who Is This For?
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Commercial landscapers
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Professional lawn care contractors
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SCAG mower owners
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Equipment repair technicians
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Fleet maintenance professionals
Recommended Property Size
Ideal for residential estates, commercial landscaping, municipalities, sports fields, golf courses, and professional turf maintenance operations using compatible SCAG equipment.
Pros
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Genuine SCAG OEM quality
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Long 4-inch design for heavy-duty applications
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Square neck prevents bolt rotation
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High-strength steel construction
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Corrosion-resistant zinc finish
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Factory-correct fit and dimensions
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Built for long service life
Cons
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Designed specifically for compatible SCAG equipment
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Requires matching 3/8"-16 hardware for proper installation
Comparison – Genuine SCAG OEM vs Aftermarket
SCAG S04003-26 OEM
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Exact OEM dimensions and thread specifications
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Precision square neck for secure installation
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Commercial-grade steel construction
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Superior corrosion resistance
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Reliable long-term fastening performance
Aftermarket Alternatives
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Thread and neck tolerances may vary
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Lower-quality materials may reduce durability
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Less precise fitment
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Reduced corrosion protection and service life
Why Buy from Barry's Power Equipment?
Barry's Power Equipment supplies genuine SCAG OEM replacement parts trusted by professional 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 replacement parts inventory
