Description
Overview:
This genuine Husqvarna screw (OEM No. 503 21 53-25) is a direct-replacement fastening component for Husqvarna disc cutters and selected handheld machines. Made from high‐grade steel for strength and longevity, it is designed to hold key assemblies securely under heavy vibration and demanding site use. Precision manufacturing ensures consistent fit and clamping force to help maintain machine integrity and safe operation. It is suitable for routine maintenance and repairs on professional equipment such as the Husqvarna K750 and K770, as well as other compatible models. Using the correct OEM screw helps prevent loosening, misalignment and premature wear of connected parts, keeping your cutter performing reliably day after day.
Key Features:
- Genuine Husqvarna part for assured compatibility and fit
- OEM reference 503 21 53-25 for easy identification and ordering
- High‐strength steel construction for durability in tough conditions
- Precision threads provide stable clamping and repeatable torque
- Designed for vibration‐intensive cutting equipment to resist loosening when installed correctly
- Direct replacement to restore original specification and reliability
- Suitable for scheduled servicing and corrective repairs
- Helps maintain guard, cover and handle alignment for safe use
- Fits a wide range of Husqvarna disc cutters and related machines (see list)
- Installs with standard workshop tools for quick turnaround
Typical Applications:
Used to replace worn, missing or damaged screws during maintenance of Husqvarna disc cutters and compatible handheld machines. Commonly applied where secure fastening is critical, including covers, guards, casings and bracketed assemblies as specified in the model's parts diagram. Suitable for workshop servicing and on-site repairs to keep equipment operating smoothly and safely.
Also known as:
Bolt, fixing, cap screw, retaining screw, OEM screw, replacement screw, equipment screw, Husqvarna fastener.
Fits Models:
3122K, 545 Mark II, 545G Mark II, 550XP Mark II, 550XP Mark II Trio Brake, 550XP Mark II TrioBrake, 550XPG Mark II, 550XPG Mark II Trio Brake, 550XPG Mark II TrioBrake, K1 PACE, K1260, K1260 Rail, K1270, K1270 I, K1270 II, K1270 Rail, K1270 Rail I, K1270 Rail II, K3000 Cut-n-Break, K4000 Cut-n-Break, K535i, K650 Cut-n-Break, K7000, K750, K760, K760 Cut-n-Break, K760 Cut-n-Break II, K760 II, K760 Rescue, K770, K770 Dry Cut, K770 OilGuard, K770 Rescue, K770 VAC, K960, K960 Chain, K960 Rescue, K960 Ring, K970, K970 Chain, K970 Chain III, K970 III, K970 Rescue III, K970 Ring, K970 Ring III
Alternate Part Numbers:
503 21 53-25, 503-21-53-25, 503215325
Product Specifications
| L&S Part No. | 503 21 53 25 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503215325 |
| Unit of Sale | 1 |
| Applications | 3122K, 545 Mark II, 545G Mark II, 550XP Mark II, 550XP Mark II Trio Brake, 550XP Mark II TrioBrake, 550XPG Mark II, 550XPG Mark II Trio Brake, 550XPG Mark II TrioBrake, K1 PACE, K1260, K1260 Rail, K1260Rail, K1270, K1270 I, K1270 II, K1270 Rail, K1270 Rail I, K1270 Rail II, K1270I, K1270II, K1270Rail, K1270RailI, K1270RailII, K1PACE, K3000 Cut-n-Break, K3000Cut-n-Break, K4000 Cut-n-Break, K4000Cut-n-Break, K535i, K650 Cut-n-Break, K650Cut-n-Break, K7000, K750, K760, K760 Cut-n-Break, K760 Cut-n-Break II, K760 II, K760 Rescue, K760Cut-n-Break, K760Cut-n-BreakII, K760II, K760Rescue, K770, K770 Dry Cut, K770 OilGuard, K770 Rescue, K770 VAC, K770DryCut, K770OilGuard, K770Rescue, K770VAC, K960, K960 Chain, K960 Rescue, K960 Ring, K960Chain, K960Rescue, K960Ring, K970, K970 Chain, K970 Chain III, K970 III, K970 Rescue III, K970 Ring, K970 Ring III, K970Chain, K970ChainIII, K970III, K970RescueIII, K970Ring, K970RingIII |
| Machine Type | Disc Cutters |
| Fits Brands | Husqvarna |
| Fits Models | K750 | K760 | K770 | K1260 | K1270, K1270 | K970 | 3122K | K4000 Cut-n-Break | K1260 Rail | K3000 Cut-n-Break | K650 Cut-n-Break | K760 Cut-n-Break | K760 RESCUE | K960 | K960 Rescue | K960 Ring | K970 Ring | K1 PACE | K535I | 550XP Mark II | K7000 | 545 Mark II | 545G Mark II | 550XPG Mark II | 550XPG Mark II Triobrake | 550XP Mark II Triobrake | K960 Chain | K970 Chain | K970 Chain III | K970 Chain III (2 Bolt) | K1270 I | K1270 II | K1270 II Smartguard | K1270 Rail I | K1270 Rail II | K760 Cut-n-Break II | K760 II | K770 Dry Cut | K770 OilGuard | K770 Rescue | K770 SmartGuard | K770 VAC | K970 Rescue III | K970 Ring III | K970 SmartGuard | K970 III |
