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Sinotruk Engine Parts

082V03216-8315 Hex Flange Bolt — M8×105mm Grade 10.9 High-Strength Fastener for Sinotruk MAN Engines

Product Item : 082V03216-8315
Category： Sinotruk Engine Parts
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The 082V03216-8315 Hex Flange Bolt is a Grade 10.9 high-strength fastener engineered specifically for Sinotruk's MAN-derived engine platforms. Don't let the "it's just a bolt" mindset cost you an engine rebuild — this isn't hardware-store grade material. It's a precision fastener built to hold torque under the vibration, heat cycling, and mechanical stress that heavy-duty diesel engines generate day in and day out.

Specification	detail
Part Number	082V03216-8315
Alternate Description	Hexagon Flange Bolt Q186-M8×105-10.9-MAN183-B1
Thread Diameter	M8
Thread Pitch	1.25 mm (standard coarse)
Thread Length	Full thread or partial thread (per DIN/ISO spec)
Thread Tolerance	6g
Overall Length	105 mm
Head Style	Hexagon head with integral flange
Flange Outer Diameter	16.0 mm (nominal)
Wrenching Size	13 mm AF (across flats)
Head Height	5.3 mm (nominal)
Material	Medium carbon alloy steel
Heat Treatment	Quenched and tempered
Strength Class	10.9 per ISO 898-1
Tensile Strength (Rm)	≥ 1,000 N/mm²
Yield Strength (Re)	≥ 900 N/mm²
Hardness	32–39 HRC
Surface Protection	Zinc phosphate / black oxide
Standard Compliance	MAN 183-B1, Q186 specification
Torque Specification	Per Sinotruk/MAN service manual for M8×10.9 fasteners
Engine Applications	MAN MC05, MC07, MC11, MC13 (Sinotruk derivative platforms)
Truck Models	Sinotruk HOWO T5G, T7H, SITRAK C7H/C9H, HOHAN series
Typical Use	Engine assembly, cylinder head, timing cover, oil pan, accessory mounting
Packaging	Bulk or individual poly bag with part number label
Condition	Brand new, OEM replacement grade

Why Grade 10.9 Matters

If you're comparing this to a standard Grade 8.8 bolt, here's the difference in real terms:

Grade 8.8: Minimum tensile strength 800 MPa. Fine for body panels, brackets, and non-structural stuff.
Grade 10.9: Minimum tensile strength 1,000 MPa, yield at 900 MPa. That's the spec Sinotruk and MAN call out for engine internals and high-stress assemblies.

Using a lower-grade bolt in a 10.9 application isn't just risky — it's a liability. Stretch, fatigue failure, and thread stripping are all on the table when you underspec a fastener in a diesel engine. The 082V03216-8315 is manufactured to the same mechanical properties as the original equipment bolt, so you torque it once and it stays torqued.