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Titan 763-549 Lock Nut

$2.10
Available to Order
Part #: 763-549

OEM Titan Fastening Hardware

Titan 763-549 Lock Nut is a genuine OEM 5/16-18 lock nut used across a wide range of Titan spray equipment, including the RentSpray Plus, PowrLiner series, Impact 640/740 series, and ProMark II.

Brand: Titan Part #: 763-549 Type: Lock Nut Size: 5/16-18

Key Compatibility

Brand Compatible Machine Part Number
Titan RentSpray Plus Airless Sprayer 763-549
Titan Impact 640i, 640IX, 740i, 740IX; 690GXC 763-549
Titan PowrLiner 1800M/2800M/4900/6950/8900; ProMark II 763-549

Resists loosening from vibration and torque, maintaining clamping force in critical cart, frame, and pump mounting applications.

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Titan OEM Fastening Hardware

Titan 763-549 Lock Nut for Sprayer Assembly Service

Titan 763-549 is a genuine OEM 5/16-18 lock nut designed for a wide range of Titan spray equipment. It fits models including the RentSpray Plus, Impact 640i/640IX/740i/740IX, 690GXC, PowrLiner 1800M/2800M/4900/6950/8900 series, ProMark II, Advantage GPX 85/220, Elite E55/G40, and HVLP ProFinish C100. Replace a stripped, corroded, or worn lock nut to restore proper fastening integrity and vibration resistance.

OEM: Titan Part #: 763-549 Type: Lock Nut Thread: 5/16-18
Detail Technical / Commercial Information
Product Overview OEM Titan 5/16-18 lock nut used across a broad range of sprayer cart, frame, and pump mounting applications.
Function Resists loosening under vibration and torque through a prevailing torque feature or nylon insert; maintains clamping force in critical joints.
Compatible Machines RentSpray Plus; 640i/640IX; 690GXC; 740i/740IX; Advantage GPX 85/220; Elite E55/G40; HVLP ProFinish C100/TS40/TS50; Performer 640i; PowrLiner 2850/4955/6955/8955/800/1800M/2800M/2800/4900 XLT/4900/4950/6900 XLT/6950/8900 series; ProMark II; SprayTech GPX 85. Confirm exact model and assembly diagram before ordering.
OEM Part Number 763-549 (alternate: 0763-549)
Thread Specification 5/16-18
Related Components Matching bolts/screws, washers, and mounting surfaces. Inspect all associated hardware during replacement.
Common Problems Solved Stripped threads, worn locking feature, corrosion damage, and missing nuts that allow fasteners to loosen under vibration.
Commercial Benefits Restores proper fastening integrity, prevents component loosening, and ensures reliable operation in high-vibration environments.

Lock nuts are often designed for single use. When reassembling a joint, install a new lock nut to ensure proper locking friction. Inspect the mating bolt or screw threads for damage, and verify that washers are present and not deformed. Tighten according to the applicable service instructions.

Frequently Asked Questions

Quick answers for confirming fitment and replacement.

Common Questions
What is the Titan 763-549 Lock Nut used for?

It is a 5/16-18 lock nut that resists loosening from vibration on a wide range of compatible spray equipment, maintaining secure fastening in critical applications.

Does it fit the Titan RentSpray Plus?

Yes, the 763-549 lock nut is compatible with the RentSpray Plus Airless Sprayer.

Which Titan machines use part 763-549?

It fits an extensive range including Impact 640i/640IX/740i/740IX, 690GXC, PowrLiner 1800M/2800M/4900/4950/6950/8900 series, ProMark II, Advantage GPX 85/220, Elite E55/G40, and HVLP ProFinish models.

When should the lock nut be replaced?

Replace it when threads are stripped, the locking feature is worn (nut spins freely), corrosion is present, or the nut is missing. Lock nuts are often single-use items.

What related parts should be inspected?

Inspect matching bolts/screws for thread damage, verify washers are present and not deformed, and ensure mounting surfaces are clean and undamaged.

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