Graco 100644 Screw Cap Sch
$7.70
Available to Order
The Graco 100644 Screw Cap SCH is a precision socket-head cap screw used in multiple Graco systems for secure assembly connections.
- Part Number: 100644
- Description: Screw, Cap, SCH (Socket-Head)
- Thread Size: 1/4-20 UNC
- Length: 3/4 inch
- Used In: Reactor E20 / E-XP1, LineLazer III 3900/5900, Texture Hopper, HVRh & VPM pumps
Quantity
Genuine OEM Part
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Overview & Key Details for Graco 100644
The Graco 100644 is a factory fastener identified as “Screw, Cap, SCH”—a socket-head cap screw commonly used across multiple Graco assemblies. Typical spec seen in parts lists: 1/4-20 x 3/4 in (length can vary by assembly; always verify against your unit’s parts manual).
Compatible Machines
Verified appearances in Graco parts lists and supplier catalogs. This list is not exhaustive; check your specific model’s manual for position and quantity.
- Graco Reactor series: E20 / E-XP1
- Graco LineLazer III models: 3900, 5900
- Graco Texture Hopper accessory assemblies
- Graco HVRh / VPM pump equipment families
Technical Specifications
| Brand / OEM | Graco |
|---|---|
| OEM Part # | 100644 |
| Description (Catalog) | Screw, Cap, SCH (socket-head cap screw) |
| Thread Size | 1/4-20 (UNC) (commonly referenced) |
| Length | 3/4 in (commonly referenced; confirm per model) |
| Typical Use | General fastener for covers, brackets, drive housings, and sub-assemblies on compatible units |
Common Locations in Assemblies
- Drive housing / cover sections on select LineLazer units
- Mounting points within Reactor E20 / E-XP1 frames or sub-assemblies
- Hardware groups in Texture Hopper accessories
- Fastener positions in HVRh / VPM pump assemblies
What’s Included
- Graco 100644 Screw (SCH) — sold individually unless noted otherwise
Frequently Asked Questions
In most references, 100644 corresponds to a 1/4-20 x 3/4 in socket-head cap screw. However, always match the length and grade/material specified by your Graco parts manual for the exact assembly to ensure proper clamping force and safety.
Quantity is assembly-specific. Some diagrams list two or more per location. Check the exploded view for your exact model; look for the item labeled “Screw, Cap, SCH” with part 100644 and note the quantity column.
Use of non-OEM fasteners can affect safety and durability. If you substitute, match thread, length, head style, and grade/material. OEM Graco 100644 ensures correct fit and torque characteristics.
No—this listing is for the screw only. If your diagram calls for washers, spacers, or nuts, order those items separately by their respective part numbers.
Locate your model’s service/parts manual and search for part 100644. Verify the diagram location and quantity. If unsure, share your model and serial with support for confirmation before purchasing.
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