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SKU:
NLT2K04402
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Husqvarna T35X Bump Feed Trimmer Head 596277001 M10 Left-Hand
$60.99
In Stock
$60.99
Sale price
$60.99
Regular price
This aftermarket T35X bump-feed trimmer head replaces Husqvarna 596277001, 578446501, and 544909001 on compatible trimmers using an M10 left-hand mounting thread.
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I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
Edward H. — Verified customer
Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Husqvarna 430LS
- Husqvarna 525L
- Husqvarna 525LK
- Husqvarna 525LS
- Husqvarna 525LST
- Husqvarna 525RX
- Husqvarna 535LS
- Husqvarna 535LST
- Husqvarna 535IFR with approved trimmer-head setup
- Husqvarna 323, 324, 326, and 327 series with matching M10 LH mount
- Husqvarna 128LDX and 324LDX with matching attachment
- Compatible Jonsered, RedMax, Poulan, and related equipment only when 596277001 and the thread match
Product Overview
A bump head that has cracked, worn through at the base, lost its spring action, or no longer holds line can waste more time than the trimming job. The T35X restores tap-to-advance operation and carries a useful amount of line for larger residential and commercial machines.
The T35X name is not the only fitment check. Confirm the M10 left-hand thread, gearhead rotation, guard clearance, and manufacturer-approved head and line size for the exact trimmer.
Key Features & Performance
- Tap-to-advance bump-feed line control
- M10 left-hand threaded mounting design
- Holds .065, .080, .095, or .105-inch line within machine limits
- Approximate line capacity up to 23 feet depending on diameter
- Aftermarket replacement for selected Husqvarna T35X applications
Replaces Part Numbers
- 596277001
- 596 27 70-01
- 578446501
- 544909001
Common Uses
- Replacing a trimmer head worn through from ground contact
- Repairing a bump feed that jams or will not advance
- Replacing cracked spool housing after impact
- Keeping a commercial trimming machine productive with a complete head
Technical Specifications
- Product Type: Bump-feed trimmer head
- Head Model: T35X
- Mounting: M10 left-hand thread
- Line Sizes: .065, .080, .095, and .105 inch within machine approval
- Approximate Capacity: Up to 23 feet depending on line diameter
- Replacement Type: Aftermarket
Installation & Fitment
- Remove the battery or spark-plug lead before touching the head
- Confirm thread diameter, pitch, handedness, rotation, and guard clearance
- Inspect the thrust washer, gearhead, guard, and line-cutting knife
- Wind equal lengths in the direction marked on the spool
- Run at low speed first and stop immediately if the head wobbles or strikes the guard
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Model names and year ranges are a starting point. Match the original reference number, configuration, connections, mounting points, and product-specific details before ordering.
Frequently Asked Questions
Q: Does T35X fit every Husqvarna trimmer? A: No. The machine must use the matching M10 left-hand mount and approved head size.
Q: What line diameters can it hold? A: Husqvarna lists .065, .080, .095, and .105 inch, but the trimmer and guard limits still apply.
Q: Why will the head not tighten clockwise? A: It uses a left-hand thread, so installation turns opposite a standard right-hand fastener.
Part Summary
keywords: Husqvarna 596277001 trimmer head, T35X bump feed replacement, 525LS line head, 525LST weed eater head, 430LS trimmer spool, M10 left hand cutting head, 578446501 replacement, aftermarket Husqvarna T35X head
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.