Spool Cap (Medium) – Part #413051602 | Husqvarna Viking & Pfaff

Maintain smooth, consistent thread delivery with this genuine medium spool cap (Part #413051602), designed for Husqvarna Viking and Pfaff sewing and embroidery machines.

This spool cap securely holds your thread spool in place, preventing wobble, tangling, and uneven thread feed. It’s a small but critical component that directly impacts stitch quality—especially when working at higher speeds or with specialty threads.

Key Features:

• ✔️ Genuine OEM Husqvarna Viking / Pfaff part
• ✔️ Medium size – ideal for standard thread spools
• ✔️ Prevents thread tangling, jumping, and uneven feed
• ✔️ Improves stitch consistency and tension stability
• ✔️ Quick and easy installation – no tools required

Compatibility

Fits Husqvarna Viking Sewing & Embroidery Machines:

100Q H-Class
Designer Diamond, Diamond Deluxe, Diamond Royale, Epic Series
Designer Ruby, Ruby Deluxe, Ruby Royale
Eden Rose 250C
Opal 650, 670, 690Q
Sapphire 830, 835, 855, 875, 930, 960Q
Designer Topaz 20, 25, 30, 40, 50
Tribute 140C
Brilliance 75Q

Fits Pfaff Sewing & Embroidery Machines:

Creative 2.0, 3.0, 4.0, 4.5, Sensation, Sensation Pro, Performance, Vision 5.0, 5.5
Expression 4.0, 710
Performance 5.0
Quilt Expression 720

Why This Part Matters

A missing or incorrect spool cap can cause:

• Thread slipping off the spool
• Uneven tension and inconsistent stitches
• Thread tangling or snapping
• Poor performance at higher sewing speeds

Replacing your spool cap ensures controlled thread delivery and professional stitch quality.

FAQ

Q: Is this the correct size spool cap for my machine?
A: This is a medium spool cap, ideal for most standard thread spools. Always match the cap size to your spool diameter for best results.

Q: Is this an original OEM part?
A: Yes — this is a genuine Husqvarna Viking / Pfaff part (413051602).

Q: Can I sew without a spool cap?
A: You can, but it often leads to poor thread control and inconsistent stitching. Using the correct spool cap is highly recommended.