The Dana/Allison Off Highway hex flange head screw, part number 10421739, is a hardware fastener designed for off-highway axle and driveline applications. Cataloged under Allison Off Highway’s driveline and axles category, this screw is sold individually (each). The flange head design integrates a built-in bearing surface, eliminating the need for a separate washer and providing consistent clamping load. Pro Gear and Transmission carries genuine Dana/Allison Off Highway parts. Call us to confirm proper fit for your specific application before ordering.Interchanges:LY10421739FeaturesHex flange head screw design integrates bearing surface into fastener headAllison Off Highway OEM part number 10421739For off-highway axle and driveline applicationsSold individually (each)Genuine Dana/Allison Off Highway driveline hardwareTech SpecsPart Number: 10421739Vendor Part Number (Allison Off Highway): LY10421739Fastener Type: Hex Flange Head ScrewApplication: Off-Highway Axle and DrivelineUnit of Measure: Each