Wacker Neuson 5000401855 Screw M6x20 Hex Socket Flat Head
Wacker Neuson

Wacker Neuson 5000401855 Screw M6x20 Hex Socket Flat Head

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5000401855-Wacker Neuson
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The Wacker Neuson is a genuine OEM Screw M6x20 Hex Socket Flat Head designed for a wide range of Wacker Neuson WPP, WPU, and BFS series equipment. Sourced directly from Wacker Neuson, this fastener meets the exact material and dimensional standards of the original hardware installed at the factory. It is confirmed to fit models including the WPP 1540A, WPP 1550A, WPU1550A, WPU1550Aw, and multiple BFS floor saw variants. Keeping the correct fastener in place ensures structural integrity across critical assemblies on your machine.

Key Features

  • Genuine OEM Fastener Grade — Manufactured to Wacker Neuson's specified thread pitch, head geometry, and hardness rating for an M6x20 hex socket flat head screw, so torque values and clamping force remain consistent with original assembly specs.
  • Flush-Mount Hex Socket Drive — The flat head profile seats flush against mating surfaces, and the internal hex socket drive allows precise torque application in tight or recessed mounting positions.
  • Broad Series Compatibility — Fits WPP 1540 and 1550 series reversible plate compactors, WPU1550A and WPU1550Aw units, and a full range of BFS and BFSX floor saws including the BFS16, BFS18, BFS20, and their D, A, and RAW variants.
  • Structural Fastener Integrity — A worn, stripped, or incorrect fastener in this position can allow component movement, vibration-induced loosening, and accelerated wear on surrounding parts — the correct OEM replacement restores proper clamping and alignment.
  • Direct Replacement Hardware — Part number 5000401855 cross-references directly to the original Wacker Neuson parts diagram, so it drops into the same position without any reworking of the mating components.

A hex socket flat head screw serves as a structural fastener that joins components while sitting flush with or below the surface of the material it secures. The flat head countersinks into the mating part, eliminating protrusions that could interfere with moving parts or adjacent assemblies. When a fastener like this stretches, strips, or corrodes, the joint loses clamping force, which can lead to component shift, vibration damage, and accelerated wear on surrounding hardware — replacing it promptly with the correct OEM part restores the joint to its designed holding strength.

Part Details

Part Number5000401855
Old Part Number0401855
BrandWacker Neuson
Part TypeGenuine OEM
DescriptionScrew M6x20 Hex Socket Flat Head

Compatibility & Fitment

Name Model Machine Number
WPU1550A WPU1550A 5000630033, 5100071592
WPU1550Aw WPU1550Aw 5000630034
WPP 1550Aw WPP1550Aw 5000630030
WPP 1540A WPP1540A 5000630025
WPP 1540W WPP1540W 5000630027
WPP 1550A WPP1550A 5000630029
WPP 1550W WPP1550W 5000630031
WPP 1550Ww WPP1550Ww 5000630032
WPP 1540Aw WPP1540Aw 5000630026
WPP 1540Ww WPP1540Ww 5000630028
Floor Saw BFS20D 5000630008
BFS20 BFS20 5000630129
Floor Saw BFS16 5000630098
Reversible Plates WPU 1550A-L 5000630124
Floor Saw BFS18D 5000630132, 5000630009
BFS18 BFS 18 5000630099
Floor Saws BFSX20D 5000630134
Floor Saw BFS20(RAW) 5000630198
Floor Saws BFSX18D 5000630133
Floor Saw BFS18(RAW) 5000630199
Floor Saws BFSX20A 5000630203
Floor Saw BFSX18 5000630249
Floor Saw BFSX20 5000630250
Floor Saw BFSX18D(RAW) 5000630251
WPU1550AW-US WPU1550AW-US 5100069715
WPU1550Aw WPU1550AW 5100071591
Floor Saws BFSX18A 5000630188
Floor Saw BFSX16 5000630248
WPU1550A-US WPU1550A-US 5100069716

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.