Graco 100220 Screw Thumb B Regular 5/16

Graco 100220 Screw, Thumb, B Regular, 5/16 is a genuine OEM fastener designed for quick, tool-free assembly and secure fitting in multiple Graco sprayers and pumps.

Used in covers, clamps, and mounting hardware
Compatible with Ultra 500, lubrication pumps, and sprayer kits
Durable metal construction for long-lasting use

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Description

Overview & Compatibility — Genuine Graco 100220 Screw, Thumb, B Regular, 5/16

Compatible Machines

This 5/16″ thumb screw appears in multiple Graco assemblies. Confirmed usages include the following models/assemblies (always verify in your unit’s parts list):

Graco Universal Hand Pump assemblies (cover/pail retention)
Graco Airless Sprayer model 231-140 (optional second gun & hose kit hardware)
Graco Grease/Lubrication Pump Packages (cover & mounting hardware groups)
Graco Ultra 500–series suction/cover hardware (kit usage)

Quick Specs

Part Summary
Part Number	100220 (Genuine Graco)
Description	Screw, Thumb, B Regular, 5/16 — tool-free fastening/retention
Typical Use	Covers, pail/cover clamps, accessory kits, light adjustments where hand-tightening is preferred
Category	Hardware & Fasteners for Graco airless sprayers and pumps
Package Contents	1 × Thumb Screw (5/16)

Why Choose This Part

OEM Fit & Finish: Direct replacement for assemblies listing 100220.
Tool-Free Operation: Knurled head for quick install/removal and on-the-fly adjustments.
Broad Usage: Found across select Graco sprayers, pumps, and accessory kits.

Fitment Guidance

Because this is a common hardware item used in multiple assemblies, the best way to confirm compatibility is to check your specific unit’s parts manual for listing 100220 (sometimes shown as 100-220). If it appears in your model’s bill of materials or schematic, this is the correct thumb screw.

Match by part number in your manual or schematic.
Confirm the location callout (cover/plate, clamp, kit hardware).
If your application differs, contact support with your model & serial for verification.

Frequently Asked Questions

Check your machine’s parts list or schematic for 100220. If it is listed, this is the correct thumb screw. When in doubt, share your exact model to confirm.

The listing is Screw, Thumb, B Regular, 5/16. It’s a knurled, hand-tightened fastener commonly used where quick removal is needed.

Frequently on covers, pail/cover clamps, and certain optional kit brackets where tool-free retention is required.

Yes. This is a genuine Graco hardware component referenced by part number 100220.

Verify your model’s documentation for 100220 (or 100-220). If your manual calls for multiple pieces, order the required quantity.