Alloy Steel High Strength Cold Heading Bolt Products with Black Oxide Finish for Car Seat. Customized Size: Size is customized according to customer drawings and specifications. Free Sample Available: Samples are available for customer evaluation. 1 Year Quality Warranty: Provides at least one year quality guarantee after product receipt. OEM Service Welcome: Supports OEM and ODM with ability to help design new projects. ISO 9001 Certified: Certified with ISO 9001:2000 and ISO 9001:2008 standards. RoHS Compliant: Products meet RoHS environmental safety requirements. DIN Standard: Manufactured according to DIN standard specifications. Multi-Material Capability: Processes aluminum, zinc, steel, stainless steel, brass, copper, and POM.