65 Manganese Steel Rolling Spring Pins M1.5–M12 | 1–50pcs

$4.99 $5.64

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Length

Diameter

Black 65 Manganese Steel Rolling Spring Pins — M1.5 to M12

Keep your mechanical assemblies precisely aligned with these high-quality elastic cylindrical spring pins. Made from 65 Manganese Steel with a black zinc finish, these cottered (slotted) roll pins deliver reliable tensioning, locating, and fastening across a wide range of industrial, DIY, and repair applications. Available in a convenient pack of 1 to 50 pieces and sizes from M1.5 through M12, you'll always have the right pin for the job.

Key Features

Material: 65 Manganese Steel — high elasticity, excellent shear strength, and long-lasting durability
Finish: Black zinc coating for corrosion resistance and a clean appearance
Type: Elastic cottered cylindrical (slotted roll pin) — self-retaining design compresses for easy insertion and expands for a secure fit
Sizes Available: M1.5, M2, M2.5, M3, M4, M5, M6, M8, M10, M12
Specification Format: d×L (e.g., 3×14 = 3 mm diameter × 14 mm length)
Pack Sizes: 1 to 50 pieces — perfect for single repairs or bulk stocking
Applications: Machinery locating, shaft and gear assembly, hinges, brackets, jigs, fixtures, and general-purpose fastening

Specifications

Attribute	Detail
Material	65 Manganese Steel
Finish	Black Zinc
Pin Type	Elastic Cottered / Slotted Roll Pin
Size Range	M1.5, M2, M2.5, M3, M4, M5, M6, M8, M10, M12
Pack Quantity	1–50 pieces
Country of Origin	Made in China

Note: Dimensional data is hand-measured per batch and may have minor tolerances. Please account for a small degree of measurement variance when ordering for precision applications.

Frequently Asked Questions

Q: What sizes of spring roll pins are included in this listing?

A: This listing covers elastic cylindrical spring pins in sizes M1.5, M2, M2.5, M3, M4, M5, M6, M8, M10, and M12. The specification format is d×L, so for example "3×14" means a 3 mm diameter pin with a 14 mm length. Select the size that matches your application when ordering.

Q: What is 65 Manganese Steel and why does it matter for spring pins?

A: 65 Manganese Steel is a high-carbon spring steel alloy known for excellent elasticity, high tensile strength, and resistance to fatigue. For slotted roll pins, this means the pin can compress during insertion and spring back to grip the bore firmly, maintaining a secure hold even under vibration or load cycling.

Q: Are these pins suitable for outdoor or high-moisture environments?

A: These black 65 Manganese Steel spring pins feature a black zinc coating that provides a degree of corrosion resistance. However, for prolonged outdoor or highly corrosive environments, additional protective measures (such as periodic lubrication or a sealed housing) are recommended to maintain optimal performance.

Q: How many pins do I receive per order?

A: Pack sizes range from 1 to 50 pieces. Simply choose the quantity that suits your needs — whether you need a single replacement pin or a bulk supply for workshop stocking.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.

We prioritize quality in selecting the materials for our items, choosing premium fabrics and finishings that ensure durability, comfort, and timeless appeal.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.