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Specifications

The PAI 640008 Screw is a precision-engineered, flanged hex-head screw (M10 × 1.5 × 120 mm, B16, Class) specifically designed for Detroit Diesel Series 60 exhaust manifold assemblies. It serves as a direct OE replacement for part 23509744, ensuring a secure and reliable fitwhere it matters.



Constructed from robust steel and manufactured in ISO-certified U.S. facilities, the screw is backed by PAI’s industry-trusted 2-year warranty. Its consistent quality and precise thread specifications make it a go-to fastener for heavy-duty engine maintenance and rebuilds—available through Wofford Truck Parts for professionals demanding durability.


Weight
0.4

Compatibility

Freightliner – FLD, Century, Columbia, Coronado, Argosy (1987–2011)

Kenworth – T600, T800, W900 (1987–2011)

Peterbilt – 377, 378, 379, 386, 388 (1987–2011)

Western Star – 4700, 4900 (1990s–2011)

Sterling – Acterra, A-Line (Late 1990s–2009/2010)

International/Navistar – select transit/line-haul models using Series 60

Bus/Coach/RV/Specialty – various units powered by Series 60 engines


Alternative Part Numbers

  • DDE23509744
  • Detroit Diesel 23509744
  • PAI640008

Related Parts

Adjusting Screw
PAI Industries, Inc. Part No: 692042
$13.06 View Part
Screw
PAI Industries, Inc. Part No: 640008
$16.52 View Part

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