Part number 185-981 is a roll plated pin designed to provide a durable, corrosion‑resistant pivot point or connection between mechanical components on compatible Hydra, Admiral, and Commander equipment. This precision‑machined pin features a plated finish for enhanced wear resistance and smooth operation in linkages, arms, or drive assemblies. Replacing a worn, bent, or missing roll plated pin restores secure component attachment, reduces play, and prevents accelerated wear of mating parts.
| Part Number | 185-981 |
|---|---|
| Part Description | Roll Plated Pin |
| Brand | Hydra / Admiral / Commander |
| Fits | Hydra M, Hydra Pro Super; Admiral (830-331, 860-451, 830-451, 941-441); Commander (741-440, 761-301, 761-411, 741-331) |
| Condition | New |
The 185-981 Roll Plated Pin is a critical fastening component used in Hydra M, Hydra Pro Super, Admiral, and Commander equipment to link moving assemblies such as control linkages, drive arms, or pivot points. The plated finish provides enhanced corrosion resistance and reduced friction, ensuring smooth operation and long service life.
Over time, pins can wear due to friction, shock loads, or inadequate lubrication. A worn pin can cause looseness, misalignment, increased vibration, and accelerated wear of mating bushings or bearings. Replacing the pin restores tight, reliable connections and prolongs the life of surrounding components.
| Component linkage | Joins two or more parts, allowing pivoting or fixed connection |
|---|---|
| Load transmission | Transfers forces between connected members without excessive deflection |
| Corrosion resistance | Plated finish protects against rust and chemical attack |
| Visible wear | Grooving, scoring, or reduced diameter on pin surface |
|---|---|
| Bending / deformation | Pin is bent or shows signs of permanent distortion |
| Excessive play | Loose fit in mating bore causing vibration or noise |
| Corrosion / rust | Pitting or rust that compromises strength or smooth operation |
Part number 185-981 is compatible with the following equipment models. Always confirm fitment using the correct parts diagram for your exact model and serial number.
| Brand / Series | Model / Number | Component |
|---|---|---|
| Hydra | Hydra M | Roll Plated Pin |
| Hydra Pro Super | Roll Plated Pin | |
| Admiral | 830-331 | Roll Plated Pin |
| 860-451 | Roll Plated Pin | |
| 830-451 | Roll Plated Pin | |
| 941-441 | Roll Plated Pin | |
| Commander | 741-440 | Roll Plated Pin |
| 761-301 | Roll Plated Pin | |
| 761-411 | Roll Plated Pin | |
| 741-331 | Roll Plated Pin |
Pin wear often affects or is affected by associated components. When servicing the roll plated pin, these parts are commonly inspected or replaced at the same time.
Worn bushings accelerate pin wear; replace them together to restore proper fit.
Hardware that secures the pin can be damaged during removal; always use new retainers.
Elongated holes in mating parts may require repair or replacement if pin wear was excessive.
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