DIN1481 Heavy Slotted Spring Pin | 65Mn Black Oxide Roll Pin

Product overview

DIN1481 is German standard heavy-duty full-slotted spring pin, structurally identical to ISO8752. Produced from high-quality 65Mn spring steel with quenching & tempering, finished by black oxide treatment. The hollow slotted design expands tightly against hole wall after press fitting to realize self-locking positioning, featuring high shear resistance, stable elasticity and basic rust protection, widely used for heavy machinery positioning and fastening.

Material & Surface Treatment

All DIN1481 pins adopt 65Mn spring steel as raw material. After overall quenching and tempering treatment, the pin gains uniform hardness, excellent toughness and outstanding anti-fatigue & shear performance. Standard surface is black oxide finishing, forming compact black anti-rust film without changing dimensional precision, improving wear resistance for ordinary indoor working conditions. Zinc plating and phosphating are available upon customer request.

Features & Advantages

• Standard Specification：Strictly produced per DIN1481 standard, full size range, interchangeable with ISO8752. • High Load Resistance：65Mn spring steel guarantees strong shear strength for heavy-duty assembly. • Self-locking Design：Elastic expansion after installation, no extra fixing parts needed, anti-loosening against shock. • Black Oxide Finish：Uniform black surface, rust-proof and smooth for easy press fitting. • Convenient Mounting：Double-side chamfer enables fast hammer pressing, high production efficiency.

Application

DIN1481 65Mn blackened spring pins are widely used in auto parts, motorcycle components, reducers, hydraulic & pneumatic fittings, engineering machinery, agricultural machinery, pumps, compressors and automation equipment for component positioning connection.