Description
Overview:
This genuine Husqvarna flange nut is a robust steel fastener used to secure key components on lawnmowers, hedgetrimmers, and brushcutters. The integrated flange spreads the clamping load, helping to keep joints tight and stable under vibration. A plated finish provides everyday corrosion resistance for outdoor use. Identified by OEM No. 731 71 16 51, it is suitable for a wide range of Husqvarna equipment and routine servicing tasks. Typical uses include fixing guards, cutter heads, blade carriers, and gearbox covers to ensure safe, reliable operation. It offers a straightforward replacement for worn or missing fixings on popular machines such as the Pro 21 SH mower and the 129 DJX brushcutter, helping maintain performance and extend service life.
Key Features:
- Genuine Husqvarna OEM part for correct fit and dependable performance
- OEM reference 731 71 16 51 for easy identification and ordering
- Flanged hex design distributes load and helps resist loosening under vibration
- Strong plated steel construction for durability and corrosion resistance
- Smooth, accurate threads for easy installation and removal
- Suitable for mowers, hedge trimmers, brushcutters, and related attachments
- Supports reliable fastening of guards, heads, and housings
- Ideal as a service replacement to maintain safe operation
Typical Applications:
Used to secure cutting heads, blade carriers, guards, gearcase covers, and similar fittings on Husqvarna lawnmowers, hedgetrimmers, brushcutters, and pole tools. Suitable for regular maintenance, part replacement, and vibration-prone assemblies in garden care, landscaping, and site work.
Also known as:
Flanged hex nut, washer-faced nut, fixing nut, mower nut, trimmer nut, brushcutter nut, fastener nut, equipment nut, service nut.
Fits Models:
122 C, 122 LD, 122 LDx, 122 LK, 122C, 122HD45, 122HD60, 122LD, 122LDx, 122LK, 122R, 122RJ, 129 C, 129 DJX, 129 L, 129 LK, 129 R, 129C, 129DJX, 129L, 129LK, 129R, 129RJ, 135R, 140B, 141B, 142RB, 152RB, 223 L, 223 R, 223L, 223R, 241R, 241RJ, 322 C, 322 E, 322 L, 322 T, 322C, 322E, 322L, 322R, 322T, 323 C, 323 E, 323 Ex, 323 L, 323 LD, 323C, 323E, 323Ex, 323HD60, 323HE3, 323L, 323LD, 323P, 323R, 323RII, 323RJ, 323RJX, 325 CX, 325 E, 325 L, 325 LDx, 325 LXT, 325 Lx, 325 R, 325 TX, 325CX, 325E, 325HD75 X-Series, 325HDA55 X-Series, 325HDA65 X-Series, 325HE3 X-Series, 325HE4 X-Series, 325HS75 X-Series, 325HS99 X-Series, 325L, 325LDx, 325LXT, 325Lx, 325P, 325R, 325RDX, 325RJX, 325RX, 325RXT, 325TX, 326 AI 25, 326 C, 326 CX, 326 ES, 326 EX, 326 HD75 X-Series, 326 HDA55 X-Series, 326 L, 326 LDx, 326 LS, 326 Lx, 326AI25, 326C, 326CX, 326ES, 326EX, 326HD60 X-Series, 326HD75 X-Series, 326HDA55 X-Series, 326HE3 X-Series, 326HE4 X-Series, 326HS75 X-Series, 326HS99 X-Series, 326L, 326LDx, 326LS, 326Lx, 326P, 326RJX, 326RX, 327 ES, 327 LDx, 327 LS, 327 Lx, 327ES, 327LDx, 327LS, 327Lx, 327P, 327P4, 327P5x, 327PT5S, 327RDX, 327RJX, 327RX, 333R, 333RJ, 335 LS, 335 LX, 335FR, 335LS, 335LX, 335R, 335RJX, 335RX, 336FR, 336FRD, 336RK, 525P4S, 525P5S, 535 LK, 535FBX, 535LK, 535LS, 535RJ, 535RX, 535RXT, DXR 140, DXR140, FS3500 G, FS3500 G II, FS3500G, FS5000, FS7000, FS7000 DL, FS7000 DMT, FS7000DL, FS7000DMT, LB 553S, LB 553Se, LB553S, LB553Se, Pro 21 SH, Pro21SH, ROYAL 47, ROYAL47, Saw Attachment, WB53 SE, WB53SE, XR 140, XR140
Alternate Part Numbers:
731 71 16-51, 731711651
Product Specifications
| L&S Part No. | 731 71 16 51 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 731711651 |
| Unit of Sale | 1 |
| Applications | 122 C, 122 LD, 122 LDx, 122 LK, 122C, 122HD45, 122HD60, 122LD, 122LDx, 122LK, 122R, 122RJ, 129 C, 129 DJX, 129 L, 129 LK, 129 R, 129C, 129DJX, 129L, 129LK, 129R, 129RJ, 135R, 140B, 141B, 142RB, 152RB, 223 L, 223 R, 223L, 223R, 241R, 241RJ, 322 C, 322 E, 322 L, 322 T, 322C, 322E, 322L, 322R, 322T, 323 C, 323 E, 323 Ex, 323 L, 323 LD, 323C, 323E, 323Ex, 323HD60, 323HE3, 323L, 323LD, 323P, 323R, 323RII, 323RJ, 323RJX, 325 CX, 325 E, 325 L, 325 LDx, 325 LXT, 325 Lx, 325 R, 325 TX, 325CX, 325E, 325HD75 X-Series, 325HDA55 X-Series, 325HDA65 X-Series, 325HE3 X-Series, 325HE4 X-Series, 325HS75 X-Series, 325HS99 X-Series, 325L, 325LDx, 325LXT, 325Lx, 325P, 325R, 325RDX, 325RJX, 325RX, 325RXT, 325TX, 326 AI 25, 326 C, 326 CX, 326 ES, 326 EX, 326 HD75 X-Series, 326 HDA55 X-Series, 326 L, 326 LDx, 326 LS, 326 Lx, 326AI25, 326C, 326CX, 326ES, 326EX, 326HD60 X-Series, 326HD75 X-Series, 326HDA55 X-Series, 326HE3 X-Series, 326HE4 X-Series, 326HS75 X-Series, 326HS99 X-Series, 326L, 326LDx, 326LS, 326Lx, 326P, 326RJX, 326RX, 327 ES, 327 LDx, 327 LS, 327 Lx, 327ES, 327LDx, 327LS, 327Lx, 327P, 327P4, 327P5x, 327PT5S, 327RDX, 327RJX, 327RX, 333R, 333RJ, 335 LS, 335 LX, 335FR, 335LS, 335LX, 335R, 335RJX, 335RX, 336FR, 336FRD, 336RK, 525P4S, 525P5S, 535 LK, 535FBX, 535LK, 535LS, 535RJ, 535RX, 535RXT, DXR 140, DXR140, FS3500 G, FS3500 G II, FS3500G, FS5000, FS7000, FS7000 DL, FS7000 DMT, FS7000DL, FS7000DMT, LB 553S, LB 553Se, LB553S, LB553Se, Pro 21 SH, Pro21SH, ROYAL 47, ROYAL47, Saw Attachment, WB53 SE, WB53SE, XR 140, XR140 |
| Machine Type | Brushcutters, Hedgetrimmers, Mowers |
| Fits Brands | Husqvarna |
| Fits Models | 122HD45 | 122HD60 | 323HD60 | 323HE3 | 325HD75 X-SERIES | 325HDA55 X-SERIES | 325HDA65 X-SERIES | 325HE3 X-SERIES | 325HE4 X-SERIES | 325HS75 X-SERIES | 325HS99 X-SERIES | 326HD60 X-SERIES | 326 HD75 X-SERIES | 326 HDA55 X-SERIES | 326HE3 X-SERIES | 326HE4 X-SERIES | 326HS75 X-SERIES | 326HS99 X-SERIES | 323P | 325P | 326P | 327PT5S | 327P | 525P4S | 525P5S | Saw Attachment | 129R | 129RJ | 135R | 142RB | 152RB | 223 L | 223 R | 241R | 241RJ | 322R | 323R | 323RII | 323RJ | 323RJX | 325R | 325RDX | 325RJX | 325RX | 325RXT | 326RJX | 326RX | 327RDX | 327RJX | 327RX | 333R | 333RJ | 335FR | 335R | 335RJX | 335RX | 336FR | 336FRD, 336RK | 140B | 141B | 535FBX | 535LS | 535RJ | 535RX | 535RXT | 122 C | 122 LD | 122 LDx | 122 LK | 129 C | 129 L | 129 LK | 223 L | 322 C | 322 E | 322 L | 322 T | 323 C | 323 E | 323 Ex | 323 L | 323 LD | 325 CX | 325 E | 325 L | 325 LDx | 325 Lx | 325 LXT | 325 TX | 326 C | 326 CX | 326 ES | 326 EX | 326 L | 326 LDx | 326 LS | 326 Lx | 327 ES | 327 LDx | 327 LS | 327 Lx | 335 LS | 335 LX | 535 LK | FS3500 G | FS5000 | FS7000 | FS7000 DL | FS7000 DMT | LB 553S | LB 553Se | ROYAL 47 | WB53 SE | 326 AI 25 | FS3500 G II | 327P4 | 327P5x | 122R | 122RJ |
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