Description
Overview:
This is a genuine Husqvarna steel screw, part number 544 21 84 20 (544218420), used to secure components on Husqvarna disc cutters and related equipment. It keeps critical parts firmly fastened under high vibration and load, helping maintain safe, reliable operation. Designed for a precise fit on factory assemblies, it is a direct replacement for worn, damaged, or missing fixings on machines such as the 3122K and K1260. The durable metal construction provides consistent clamping force, supporting correct alignment of covers, guards, housings and other assemblies. As an OEM part, it meets Husqvarna's specifications for thread and dimensions, so it installs cleanly and performs as intended on site or in workshop conditions.
Key Features:
- Genuine Husqvarna OEM part for assured compatibility and performance
- Steel construction for strength and long service life under heavy use
- Accurate thread and dimensions for a secure, rattle‐free fit
- Helps maintain tool safety by keeping assemblies correctly fastened
- Suitable for high‐vibration environments typical of disc cutting
- Straightforward replacement using standard hand tools
- Supports reliable maintenance schedules and reduces unplanned downtime
- Matches original fastener spec to avoid guesswork with generic screws
Typical Applications:
Replacing original fasteners on Husqvarna disc cutters and associated machines where a secure, vibration‐resistant fixing is required. Commonly used during routine servicing, after strip‐downs for cleaning, or when a screw has been lost, corroded, or damaged. Suitable for professional contractors, hire fleets, and DIY users who need dependable retention of guards, covers, brackets, and other assembly points.
Also known as:
Machine screw, fixing screw, retaining screw, OEM fastener, replacement fastener, equipment screw, assembly screw, mounting screw, bolt (informal use).
Fits Models:
3122K, 524L, 525L, 525LK, 525RJD, 525RJX, 525RK, 525RS, 525RX, 525RX Mark II, 525RXT, 525RXT Mark II, 535FBX, 535iFR, 535iFR BT, 535iRX, 535iRXT, 543RBK, 543RBX, 553RBX, DE 110 H, DE 110 S H, K1 PACE, K1 PACE RAIL, K1 PACE Rescue, K1260, K1260 Rail, K1270, K1270 I, K1270 II, K1270 Rail I, K1270 Rail II, K30, K3000, K3000 Cut-n-Break, K4000, K4000 Cut-n-Break, K540I, K6500, K6500 Chain II, K6500 Ring, K7000, K7000 Chain, K7000 Ring
Alternate Part Numbers:
544218420, 544 21 84 20
Product Specifications
| L&S Part No. | 544 21 84 20 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 544218420 |
| Unit of Sale | 1 |
| Applications | 3122K, 524 L, 524L, 525L, 525LK, 525RJD, 525RJX, 525RK, 525RS, 525RX, 525RX Mark II, 525RXT, 525RXT Mark II, 525RXTMarkII, 535FBX, 535iFR, 535iFR BT, 535iFRBT, 535iRX, 535iRXT, 543RBK, 543RBX, 553RBX, DE 110 H, DE 110 S H, DE110H, DE110SH, K1 PACE, K1 PACE RAIL, K1 PACE Rescue, K1260, K1260 Rail, K1260Rail, K1270, K1270 I, K1270 II, K1270 Rail I, K1270 Rail II, K1270I, K1270II, K1270RailI, K1270RailII, K1PACE, K1PACERAIL, K1PACERescue, K30, K3000, K3000 Cut-n-Break, K3000Cut-n-Break, K40, K4000, K4000 Cut-n-Break, K4000Cut-n-Break, K540I, K6500, K6500 Chain II, K6500 Ring, K6500ChainII, K6500Ring, K7000, K7000 Chain, K7000 Ring, K7000Chain, K7000Ring |
| Machine Type | Disc Cutters, Brushcutters |
| Fits Brands | Husqvarna |
| Fits Models | K1260 | K1270, K1270 | 3122K | K4000 Cut-n-Break | K1260 Rail | K30 | K3000 Cut-n-Break | K40 | K6500 | K6500 RING | 525L | 525LK | 525RJD | 525RJX | 525RK | 525RS | 525RX | 525RXT | 535FBX | 543RBK | 543RBX | 553RBX | 524 L | 535iFR | 535iFR BT | 535iRX | 535iRXT | K1 PACE | K1 PACE RAIL | K1 PACE RESCUE | K540I | DE 110 H | DE 110 S H | K7000 | K7000 Chain | K7000 Ring | K7000 SmartGuard | K6500 Chain II | K1270 I | K1270 II | K1270 II Smartguard | K1270 Rail I | K1270 Rail II | 525RX Mark II | 525RXT Mark II |
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