Fillister Head Bolt - M10x30 (A2-70 Stainless) - size equivalent to BMW part number 07119901049 belongs almost exclusively to the BMW Motorrad (Motorcycle) catalog. It fits a vast range of classic models spanning from 1960 to 2006. Because it is a highly standardized generic fastener (M10x30mm, 8.8 grade, zinc-plated), BMW used it across decades of different motorcycle architectures. The ones that I have for sale were sold for use with factory exhaust clamps and replaced with yellow zinc ones that came from the factory. (19g)
Note - price is per bolt. Listing here is for the stainless steel bolts which should NOT be used for structural applications. If you are substituting a factory BMW bolt with a stainless bolt, keep these constraints in mind:
- Strength Class Limitations: A standard "THE A2-70" or "A4-70" stainless bolt has a tensile strength roughly equivalent to a standard Grade 8.8 metric steel bolt.
- Do Not Use for High-Load Structural Parts: If the factory BMW bolt you are replacing is an engine block bolt, a cylinder head bolt, suspension arm hardware, or a brake caliper bracket bolt, it is often a Grade 10.9 or 12.9 high-tensile steel bolt. Replacing a 10.9 structural bolt with a stainless steel bolt can cause the bolt to shear or snap under load.
- Galling Risk: Stainless steel has a natural tendency to "gall" (cold-weld or seize up) when being driven into aluminum or other stainless parts. Always use a high-quality anti-seize lubricant or thread-locker when installing a "THE" stainless bolt into your BMW's aluminum casing.
