Compatible Machines
This is an OEM Graco fastener used across multiple assemblies. Always confirm your model’s parts diagram lists 100642 before ordering.
- Graco ProMix 2KE plural-component proportioner systems — used in valve stack assemblies where specified.
- Graco mixing/manifold & valve stack assemblies that explicitly call out part 100642 in the parts list.
- Other Graco finishing/protective-coatings systems that require a socket head cap screw of the specified size; verify with the service manual or exploded diagram.
Product Overview
The Graco 100642 Screw, Cap, Socket HD is a genuine Graco socket head cap screw designed for reliable clamping in critical assemblies (manifolds, brackets, valve stacks). Using the correct OEM fastener helps maintain alignment, sealing integrity, and serviceability.
Key Features
- OEM Graco quality and fit.
- Socket head cap design for positive torque and compact clearances.
- Heavy-duty build for industrial spray and proportioning systems.
Specifications
| Part Number |
100642 |
| Description |
Screw, Cap, Socket HD (socket-head cap screw) |
| Typical Size* |
1/4-20 × 2 in (51 mm) |
| Material |
Steel (per Graco specification) |
| Use Case |
Manifold/valve stack & bracket assemblies in Graco equipment |
Installer Notes
- Clean threads and mating surfaces; replace any damaged hardware.
- Tighten evenly in a cross pattern where applicable to maintain sealing.
- Follow the torque specification in your unit’s service manual.
Frequently Asked Questions
It fits models whose parts diagrams list 100642 — Screw, Cap, Socket HD. Check your machine’s exploded view or manual; if 100642 is referenced, it’s compatible.
Typical specification is 1/4-20 × 2 in (51 mm). Always verify against your model’s bill of materials and torque table.
Yes—100642 is typically supplied as a single screw. Order the quantity required by your assembly (some stacks use multiples).
Use only the practices specified in your unit’s service manual. Many manifold/valve stack fasteners have a defined torque and may call for a medium-strength threadlocker; follow the official instructions for your model.
For safety and sealing integrity, use the OEM Graco part where specified. Material grade, length, and thread pitch must match; substituting incorrect hardware can cause leaks or mechanical failure.
