

The Graco 100030 Bushing is a precision adapter that connects 1/4" male to 1/8" female NPT fittings, ensuring leak-free connections in air or fluid systems. Ideal for guns, pumps, and proportioners.
This Graco 100030 Bushing (thread reducer 1/4 M x 1/8 F, NPT) is used where a 1/4" male port must accept a 1/8" female connection. It appears in OEM parts lists for the following equipment families:
A compact, precision-machined bushing used as a thread reducer/adapter in air or fluid paths on Graco equipment. It converts a 1/4 male NPT port to a 1/8 female NPT connection, helping integrate gauges, valves, hoses, or line components that use smaller 1/8" threads.
| OEM Part | Graco 100030 — Bushing |
|---|---|
| Thread Type | NPT (National Pipe Thread) |
| Thread Size | 1/4" Male NPT → 1/8" Female NPT |
| Typical Use | Adapting ports/fittings in gun, pump, or rig manifolds where 1/8" components must connect to 1/4" ports |
| Position | Varies by model (air line or fluid line interfaces; see your parts diagram) |