Graco 115644 Screw Mach Hex Washer HD
$2.00
Available to Order
The Graco 115644 Screw Mach Hex Washer HD is a durable OEM‑machine screw with integrated washer head — used to securely mount pump housings, valve covers or other components in Graco spray/pump systems.
- Machine screw with built‑in hex washer head
- Used in pumps & spray‑system assemblies for secure fastening
- Ensures load distribution, reduces stress under pressure/vibration
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
Easy Returns
Compatible Assemblies for Graco 115644 Screw Mach Hex Washer Head
The Graco 115644 Screw Mach Hex Washer HD is a genuine OEM-specified fastener designed for secure mounting in Graco pump and spray systems. Its built-in washer head helps spread load and maintain tight fastening under pressure or vibration.
- Graco pneumatic or diaphragm pumps where part #115644 is listed for inline covers, housings or valve assemblies
- Sprayer and fluid-handling systems requiring machine-screw mounting with washer-head for pressure-safe, vibration-resistant fastening
- Any Graco equipment module where the parts diagram specifies “Screw, Mach, Hex Washer Hd – 115644” for structural or cover mounting
Frequently Asked Questions
The built-in washer head spreads the load over a larger area, reducing stress on housings or covers — especially important in high-pressure or vibration-prone systems.
Yes — 115644 appears in official Graco spare-parts catalogs as “SCREW, MACH, HEX WASHER HD,” confirming its OEM status.
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