Graco 115643 Screw Machine Hex Washer Head
$3.00
Available to Order
The Graco 115643 Screw Machine Hex Washer Head is a strong, washer‑head fastener designed for secure, load‑distributed assembly in Graco pumps and spray equipment.
- OEM‑specified machine screw with built‑in washer head
- Used in pump/valve housings and cover assemblies of Graco diaphragms/pumps
- Provides vibration‑resistant, pressure‑safe fastening and reliable performance under load
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
Easy Returns
Compatible Assemblies for Graco 115643 Screw Machine Hex Washer Head
The Graco 115643 Screw Machine Hex Washer Head is a factory-specified fastener used in various Graco pump and spray-system assemblies to ensure strong, vibration-resistant mounting with even load distribution — thanks to its built-in washer head.
- Graco pneumatic/diaphragm pumps and air-valve housings where part #115643 is listed (e.g. inlet/outlet covers, valve covers)
- Sprayer and fluid-handling systems requiring secure machine-screw mounting under pressure/ load
- Any Graco module with parts-diagram specifying mach-hex-washer-head screw 115643 for structural fastening or cover mounting
Frequently Asked Questions
Because the built-in washer head spreads the load over a larger area, reducing stress on housing or cover surfaces — especially important under fluid pressure or vibration.
Yes — 115643 appears in Graco spare-part catalogs as “SCREW, MACH, HEX WASHER HD,” confirming its OEM status.
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