Graco 115644 Screw Mach Hex Washer HD

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

$1.94

Based on 0 reviews

Description

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 :contentReference[oaicite:4]{index=4}
Sprayer and fluid‑handling systems requiring machine‑screw mounting with washer‑head for pressure‑safe, vibration‑resistant fastening :contentReference[oaicite:5]{index=5}
Any Graco equipment module where the parts diagram specifies “Screw, Mach, Hex Washer Hd – 115644” for structural or cover mounting :contentReference[oaicite:6]{index=6}

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. :contentReference[oaicite:7]{index=7}

Yes — 115644 appears in official Graco spare‑parts catalogs as “SCREW, MACH, HEX WASHER HD,” confirming its OEM status. :contentReference[oaicite:8]{index=8}

Subscribe to our newsletter to get exclusive discounts and new theme launches right in your inbox.

You may unsubscribe at any moment. For that purpose, please find our contact info in the legal notice.

Graco 115644 Screw Mach Hex Washer HD

Compatible Assemblies for Graco 115644 Screw Mach Hex Washer Head

Frequently Asked Questions

ADDRESS

INFORMATION

YOUR ACCOUNT

Graco 115644 Screw Mach Hex Washer HD

Compatible Assemblies for Graco 115644 Screw Mach Hex Washer Head

Frequently Asked Questions

Why use a hex‑washer head screw instead of a plain screw?

Is 115644 a genuine OEM part from Graco?

ADDRESS

INFORMATION

YOUR ACCOUNT