The Genie 42377GT Socket Head Cap Screw, 1/4-20 x.75 is a genuine OEM zinc-plated fastener built for Genie Z-series articulating boom lifts, including the Z-34/22 N, Z-34/22 DC, Z-34/22 Bi-Energy, Z-34 IC, Z-30/20 N, Z-30/20N RJ, Z-25/8, Z-20/8, and Z-20/8N. Sourced directly from Genie, this screw matches the exact thread pitch, length, and finish called out in the original machine design — no guesswork on fitment. Cross-reference part number 42377GT against your machine's parts manual to confirm it is the correct fastener for your application before ordering.
Key Features
- Genuine OEM Dimensional Conformity — Manufactured to the exact 1/4-20 thread specification and 0.75-inch length required by the original Genie design, ensuring correct torque engagement and seating depth.
- Zinc-Plated Finish — The zinc coating provides a corrosion-resistant barrier suited to the outdoor working environments these boom lifts operate in, helping the fastener hold its integrity over time.
- Direct-Fit Replacement — The socket head cap profile installs using a standard hex key, seating flush into recessed or tight-clearance locations where a hex head fastener would not fit.
- Broad Z-Series Coverage — A single part number covers the Z-34/22, Z-30/20N, Z-25/8, and Z-20/8 families, making it a practical stocking item for fleets running multiple Genie articulating boom models.
- Structural Integrity Under Load — A fastener at the correct grade and specification maintains the clamping force needed to keep assembled components secure during boom operation. A stripped, corroded, or incorrectly sized substitute can compromise that holding force.
A socket head cap screw combines a cylindrical head with an internal hex drive socket, allowing it to be installed in recessed pockets or locations where wrench clearance is limited — common on boom lift assemblies where space is tight. The 1/4-20 thread designation specifies the screw's diameter and thread count per inch, and the 0.75-inch length determines how deeply it engages the mating component; using a screw of the wrong length or thread pitch risks cross-threading, insufficient clamp load, or fastener pullout under working loads. Replacing a worn, stripped, or missing fastener with the correct OEM specification screw restores the assembly to its designed holding capacity.
Part Details
| Part Number | 42377GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Socket Head Cap Screw, 1/4-20 x .75, Zinc-Plated |
Compatibility & Fitment
| Name | Model |
|---|---|
| Z-34/22 N | Z-34/22 N |
| Z-34/22 DC | Z-34/22 DC |
| Z-34/22 Bi-Energy | Z-34/22 Bi-Energy |
| Z-34 IC | Z-34 IC |
| Z-30/20 N | Z-30/20 N |
| Z-30/20N RJ | Z-30/20N RJ |
| Z-25/8 | Z-25/8 |
| Z-20/8 | Z-20/8 |
| Z-20/8N | Z-20/8N |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
