FIG. 7.03Rivets & Pins · NXB-COT

Cotter Pins

A folded half-round split pin inserted through a cross-hole and spread to lock castle nuts, clevis pins, and headed pins against withdrawal — a low-cost positive secondary lock.

Conforms to

DIN 94ISO 1234ASME B18.8.1

Size rangeØ1.6–Ø10 mm · 1/16"–3/8"

FIG. 7.03Drawn to standard

Cotter Pins — representative profile, dimensioned to standard

Cotter Pins — representative product photograph — PLATECotter Pins — as supplied

FIG. SPECAt a glance

Size rangeØ1.6–Ø10 mm · 1/16"–3/8"

Materials4 options

Finishes2 options

Standards3 refs

Applications5 typical

FamilyRivets & Pins

Split pin that locks castle nuts and clevis joints.

FIG. TBLSpecifications

Representative specifications

A cross-section of stocked configurations. Not exhaustive — diameters, lengths, grades, and finishes extend across the full range on request.

Diameter	Thread	Material	Finish	Grade	Standard	Tensile
Ø3.2 mm	—	Carbon Steel	Zinc Plated	Mild steel	DIN 94	—
Ø4.0 mm	—	Stainless 304	Plain	A2	ISO 1234	—
1/8"	—	Carbon Steel	Zinc Plated	Mild steel	ASME B18.8.1	—
Ø2.0 mm	—	Stainless 316	Plain	A4	ISO 1234	—

Representative specifications — not exhaustive · NXB-COT

FIG. SELSelection

Materials, finishes & where it works

Match the line to the load, the environment, and the standard it answers to.

Materials

Carbon SteelStainless 304Stainless 316Brass

Finishes

Zinc PlatedPlain

Standards

DIN 94ISO 1234ASME B18.8.1

Typical applications

Locking castle and slotted nuts
Retaining clevis pins
Linkage and pivot security
Wheel and axle hardware
Agricultural and trailer pins

Served industries

Automotive Construction OEM & Assembly Marine

FIG. RELRelated lines

Pairs & alternatives

Mating parts and adjacent lines engineers reach for alongside this one.

FIG. 3.08NXB-CSN

Castle Nuts

Slotted crown takes a cotter pin for positive locking.

M6–M36 · 1/4"–1-1/2"

FIG. 7.04NXB-CLV

Clevis Pins

Headed pivot pin retained by a cotter or ring.

Ø3–Ø25 mm · 1/8"–1"

FIG. 7.06NXB-SPP

Spring Pins

Slotted or coiled roll pin sized by radial spring.

Ø1.5–Ø20 mm · 1/16"–3/4"

FIG. 7.05NXB-DWL

Dowel Pins

Precision ground pin for alignment and location.

Ø1.5–Ø25 mm · 1/16"–1"

FIG. CTATalk to sales

Spec cotter pins for your next build.

Grade, material, finish, and standard — matched to your joint and quoted from stock. Tell us the load case and we’ll confirm the line.

Talk to sales about Cotter Pins Back to the range

Diameter

Thread

Material

Finish

Grade

Standard

Tensile

Ø3.2 mm

—

Carbon Steel

Zinc Plated

Mild steel

DIN 94

—

Ø4.0 mm

—

Stainless 304

Plain

ISO 1234

—

1/8"

—

Carbon Steel

Zinc Plated

Mild steel

ASME B18.8.1

—

Ø2.0 mm

—

Stainless 316

Plain

ISO 1234

—