Original BMW Isa Screw with Washer M6x25 for BMW 530i, 740i, 740iL, and 840Ci (1993–2001)

BMW's Isa screw with washer, part 07-12-9-904-708, is an M6x25 Original BMW fastener with a captive washer, and our store fitment assigns it to the BMW 530i, 740i, 740iL, and 840Ci from 1993 to 2001. A screw with a built-in washer spreads clamping load over a wider area than the screw head alone and keeps the washer from going missing during a repair. BMW gives the thread as M6 with a 25 mm length and calls out a U1 washer. The finish is ZNS3, a chrome-free zinc coating that BMW marks as free of hexavalent chromium. Each screw weighs 7 grams.

Original BMW Parts carry a 24-month parts warranty.

The full size callout matters when matching a replacement. This one reads M6X25-U1-ZNS3, which identifies the thread, the length, the washer type, and the coating. BMW's parts data dates production of this number from September 2004, and the same screw also appears on later BMW cars and motorcycles. Compare the old screw against the M6x25 size before fitting this one.

Technical Details

• Manufacturer: BMW (Genuine BMW)
• Part number: 07-12-9-904-708
• BMW name: Isa screw with washer
• Size: M6x25 with U1 washer
• Finish: ZNS3 chrome-free zinc coating
• Weight: 7 g (0.25 oz)
• Production start: September 2004
• Sold as a single piece
• Warranty: 24 months on Original BMW Parts

Common Questions

What size is this screw?
BMW specifies it as M6x25 with a U1 washer and a ZNS3 chrome-free zinc finish.

Does the washer come attached?
Yes. BMW supplies it as a screw with washer, sold as one piece.

Fitment & Compatibility

Use the fitment table below to confirm year, model, submodel, and application notes before ordering. With over 20 years of parts and fitment experience, PMB Performance can match this to your VIN.