977771 Flange Screw | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta flange screw listed for 46 applications across TAMD, AD, D, TMD, MD and KAD engines, superseding part number 860541. No weight, thread size or length is published against this number, so it cannot be told apart from the other flange screws listed here by any published figure — order it by part number.

🚤 Compatibility

• Engine Family: TAMD, AD, D, TMD, MD, KAD, KAMD

Full model list at the end of this description.

⚙️ Key Features

• Fits 46 applications across TAMD, AD, D, TMD, MD and KAD engines
• Supersedes 860541
• 4 used per assembly

🔌 Function

Clamps a joint with an integral flange under the head, spreading the load over a wider area than a plain head and doing away with a separate washer.

⚠️ Common Signs of Failure

• Joint working loose or weeping at the face
• Flange face under the head scored or dished
• Head rounded or the drive worn out
• Thread picked up, galled or stripped on removal
• Screw snapped on tightening or found sheared in the hole

🛠️ Service Notes

• Flange screws 977814, 978266 and 978267 are the others listed here; this one publishes no weight at all, so do not try to identify it by comparison
• Do not add a washer under a flange screw — the flange is the bearing face

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 977771 → Supersedes 860541

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta TAMD31L-A, TAMD31M-A, TAMD31P, TAMD31P-A, TAMD31S, TAMD31B, TAMD31D
• Volvo Penta TAMD41B, TAMD41D, TAMD41H-A, TAMD41H-B, TAMD41P-A, TAMD41P
• Volvo Penta AD31B, AD31D-A, AD31L-A, AD31P-A, AD31XD
• Volvo Penta AD41B, AD41D, AD41L-A, AD41P-A, AD41BJ
• Volvo Penta D41B, D41D, D41L-A
• Volvo Penta KAD42A, KAD42B, KAD42P-A
• Volvo Penta KAMD42A, KAMD42B, KAMD42P-A
• Volvo Penta KAMD43P, KAMD43P-A, KAMD43P-B
• Volvo Penta TMD31B, TMD31D, TMD31L-A
• Volvo Penta TMD41B, TMD41D, TMD41L-A
• Volvo Penta TAMD42WJ-A, TAMD42B
• Volvo Penta KAD32P
• Volvo Penta KAD43P-A
• Volvo Penta MD31A