Graco 166049 Swivel Nut

$129.00

Available to Order

Part #: 166049

The Graco 166049 Swivel Nut is an OEM stainless coupling nut used in Graco fluid systems for secure, leak-free hose connections.

Thread size: 1" NPT
Hex outer diameter: 1-1/2"
Approx. length: 1.45"
Prevents hose twisting during operation
Ensures correct fit and pressure performance

Genuine OEM Part Fast Shipping (Order by 1 PM CST) Easy Returns

Compatibility & OEM Details

Compatible Machines

Model-specific compatibility for this part is not publicly listed by Graco. Please confirm against your sprayer’s parts list or assembly diagram (look for pump/manifold hose swivel connections using 1" NPT).

Graco 166049 Nut, Swivel — Genuine OEM

Graco 166049 Swivel Nut is a genuine OEM coupling nut used in Graco fluid systems to secure a swiveling hose/pipe connection without twisting the hose. Ideal for maintaining leak-free joints and correct pressure performance when servicing Graco pump and manifold assemblies.

Specifications

Part Number	166049 (also shown as 166-049)
Item Name	Nut, Swivel
Thread / Connection	1" NPT (typical listing)
Hex OD	1-1/2" (typical listing)
Approx. Length	~1.45" (≈37 mm)
Material	Stainless (per common listings)

Overview

Maintains a secure, swiveling joint on fluid lines to reduce hose twist and wear.
OEM build helps ensure proper fit, sealing surface quality, and pressure capability.
Use when servicing Graco fluid sections, manifolds, or hose assemblies that specify this part number.

Fit Guidance

Always verify the part number in your model’s official parts list or exploded diagram.
Confirm thread type/size (1" NPT) and mating component requirements before install.
Inspect threads and sealing faces; replace worn adapters or gaskets as needed.
Tighten to manufacturer-recommended torque; do not overtighten to avoid damage.

Frequently Asked Questions

Graco does not publish a universal cross-model list for this part. Check your machine’s parts list; if 166049 is referenced for your hose/manifold connection, it will fit. If you’re unsure, share your model and serial number for confirmation before ordering.

Typical listings show a 1" NPT swivel connection with a 1-1/2" hex OD. It’s used on fluid lines—commonly between pump/manifold and hose assemblies—to allow rotation without loosening the joint.

Clean and inspect threads, confirm orientation, and tighten to spec. After installation, pressure-test at a safe level to check for leaks. Replace mating adapters or seals if pitted or damaged.