DIN 94 A2 Stainless Steel Split Pins (Cotter Pins) Ø1–6 mm

ID 1402286

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DIN 94 split pins, also known as cotter pins, are manufactured from A2 stainless steel and designed for retaining and securing components in mechanical assemblies. Their split-leg construction allows the legs to be bent apart after insertion through a suitable hole, helping prevent accidental withdrawal. The corrosion-resistant stainless steel material is suitable for general indoor and outdoor fastening applications. The range includes 35 dimensional variants across eight nominal diameters from 1 to 6 mm, with lengths up to 60 mm. Each size is identified by an individual FNI part number.

Description
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DIN 94 A2 Stainless Steel Split Pins (Cotter Pins) Ø1–6 mm

DIN 94 split pins are manufactured from A2 stainless steel and designed to retain mechanical components in position. Also known as cotter pins, these fasteners feature a folded metal body with two split legs that can be bent apart after installation.

The pin is inserted through a suitably sized hole in a shaft, bolt, clevis pin or other component. Bending the legs helps prevent the pin from withdrawing, making split pins useful for securing mechanical connections and retaining components.

A2 stainless steel provides corrosion resistance for general indoor and outdoor applications. These pins are commonly used in machinery, mechanical equipment and fastening assemblies where a removable retaining device is required. A new pin should generally be used when a previously bent pin is removed.

The range includes 35 dimensional variants across eight nominal diameters: 1, 1.5, 2, 2.5, 3, 4, 5 and 6 mm. Available lengths depend on diameter, with listed sizes extending to 60 mm. Each version is identified by an individual FNI part number.

Technical Specifications

Product Type	Split Pin / Cotter Pin
Standard	DIN 94
Material	A2 Stainless Steel
Design	Split-Leg Retaining Pin
Available Diameters	1, 1.5, 2, 2.5, 3, 4, 5, 6 mm
Maximum Listed Length	60 mm
Number of Variants	35
Dimensions Format	Nominal Diameter × Length
Manufacturer / Supplier	Forniture Nautiche Italiane (FNI)

Features and Applications

Manufactured from corrosion-resistant A2 stainless steel.
DIN 94 split pin design with bendable legs.
Helps retain components after insertion and bending of the legs.
Suitable for securing shafts, clevis pins and other mechanical connections.
Useful in machinery, equipment and general fastening assemblies.
Available in eight nominal diameters and 35 dimensional configurations.

Available Sizes and Part Numbers

Diameter	Length	FNI Part No.
1 mm	12 mm	Y94112
1 mm	15 mm	Y94115
1 mm	20 mm	Y94120
1.5 mm	1.5 mm*	Y941515
1.5 mm	20 mm	Y941520
1.5 mm	25 mm	Y941525
1.5 mm	30 mm	Y941530
2 mm	12 mm	Y94212
2 mm	15 mm	Y94215
2 mm	20 mm	Y94220
2 mm	30 mm	Y94230
2 mm	40 mm	Y94240
2.5 mm	20 mm	Y942520
2.5 mm	25 mm	Y942525
2.5 mm	30 mm	Y942530
2.5 mm	35 mm	Y942535
2.5 mm	40 mm	Y942540
2.5 mm	50 mm	Y942550
3 mm	15 mm	Y94315
3 mm	20 mm	Y94320
3 mm	30 mm	Y94330
3 mm	40 mm	Y94340
3 mm	45 mm	Y94345
3 mm	50 mm	Y94350
3 mm	60 mm	Y94360
4 mm	20 mm	Y94420
4 mm	35 mm	Y94435
4 mm	40 mm	Y94440
4 mm	50 mm	Y94450
4 mm	60 mm	Y94460
5 mm	30 mm	Y94530
5 mm	40 mm	Y94540
5 mm	50 mm	Y94550
6 mm	40 mm	Y94640
6 mm	50 mm	Y94650

* The Y941515 dimension is reproduced as 1.5 × 1.5 mm from the supplied product data and requires verification.

Size Selection

Select the nominal pin diameter to match the installation hole, then choose a suitable length that provides enough material for the split legs to be bent after insertion. Refer to the available size combinations and corresponding FNI part numbers.