Bomag 08240812 Domed Cap Nut

The Bomag 08240812 Domed Cap Nut is a genuine OEM fastener designed for an exceptionally wide range of Bomag equipment, including reversible vibratory plates such as the BPR 65/52 D-3, BPR 75/60 D-3, BPR 100/80 D, and BPH 80/65, tandem rollers including the BW 80 AD-5, BW 120 AD-5, BW 154 AP-4, and BW 202 AD-5, single drum rollers such as the BW 145 D-5, BW 177 D-5, BW 213 D-5, and BW 226-5, pneumatic tyred rollers including the BW 24 RH, BW 25 RH, and BW 28 RH, cold milling machines such as the BM 500/15, BM 600/15, BM 1000/35, and BM 2500/75, and recyclers/stabilizers including the RS 460 and RS 500. As a genuine Bomag OEM part, this domed cap nut is manufactured to the same specification as the original hardware, ensuring a correct, lasting installation every time. Cross-machine compatibility makes part number 08240812 a practical stock item for mixed fleets and service operations running multiple Bomag product lines.

Key Features

• Genuine OEM Fastener Integrity — Manufactured to Bomag's original torque and thread specification, so this domed cap nut seats and clamps exactly as the hardware was designed to.
• Drop-In Thread Match — Threads, shank dimensions, and dome profile are identical to the original, allowing straightforward hand-start installation without chasing or reworking the receiving thread.
• Broad Fleet Coverage — A single part number covers reversible vibratory plates, tandem rollers, single drum rollers, pneumatic tyred rollers, cold milling machines, recyclers/stabilizers, and more across the Bomag lineup, including models such as the BPR 75/60 HD-3, BW 138 AD-5, BW 174 AP-4, BW 219 DH-5, and BM 1200/35.
• Corrosion-Resistant Dome Profile — The rounded cap design shields the exposed fastener end from moisture, debris, and impact — extending service life in demanding outdoor compaction and milling environments.
• Positive Clamping Under Vibration — Correct OEM hardware maintains clamp load on high-vibration assemblies; an incorrect or worn cap nut can back off under operating cycles, leading to loosened joints and potential component damage.

A domed cap nut is a closed-end fastener that threads onto a bolt or stud, securing a joint while protecting the exposed thread end beneath its rounded cap. The dome closure keeps debris, moisture, and mechanical damage away from the thread tip, which is especially important on compaction and milling equipment that operates in wet, abrasive conditions. When a cap nut loosens, strips, or corrodes through, the fastened joint loses clamp load — allowing components to shift, vibrate free, or wear prematurely — making timely replacement with the correct OEM part essential to maintaining structural integrity across the machine.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.