2.5 mm Taper Pin (Tapered Pin), ISO 2339

This page has 13 lengths from 10 to 35 mm, each as simplified STEP of the 2.5 mm taper pin (ISO 2339).

How these parts are made, and what the levels mean: read the method

• Also searched as: 2.5 mm pin, 2.5 mm x 10 to 2.5 mm x 35 pins
• Model id: iso2339-d2-5
• Standard: ISO 2339:1986 · size 2.5 mm

Lengths

Length (mm)	Part key	Simplified
10	iso2339-d2-5x10	STEP
12	iso2339-d2-5x12	STEP
14	iso2339-d2-5x14	STEP
16	iso2339-d2-5x16	STEP
18	iso2339-d2-5x18	STEP
20	iso2339-d2-5x20	STEP
22	iso2339-d2-5x22	STEP
24	iso2339-d2-5x24	STEP
26	iso2339-d2-5x26	STEP
28	iso2339-d2-5x28	STEP
30	iso2339-d2-5x30	STEP
32	iso2339-d2-5x32	STEP
35	iso2339-d2-5x35	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d	Small-end diameter, nominal	2.46	2.5	2.5	2.5	nominal	L1
a	End dome length		0.3 ref		0.3	reference value	L1
taper	Taper (1:x)		50		50	nominal	L1

Drawing

As a PDF: CC-ISO2339-SZ-2.5.pdf.

The 2.5 mm taper pin beside the 2 mm and the 3 mm

The 2.5 mm is number 2, counting from the smallest, of the 7 ISO 2339 taper pins published here, from 2 mm to 8 mm.

• Small-end diameter, nominal (d): 2.5 mm on the 2.5 mm taper pin, against 2 mm on the 2 mm and 3 mm on the 3 mm.
• End dome length (a): 0.3 mm (reference) on the 2.5 mm taper pin, against 0.25 mm (reference) on the 2 mm and 0.4 mm (reference) on the 3 mm.
• Taper (1:x) (taper): 50 mm on the 2.5 mm taper pin, the same on the 2 mm and the 3 mm.

Other sizes

• One size smaller: 2 mm Taper Pin (Tapered Pin), ISO 2339.
• One size larger: 3 mm Taper Pin (Tapered Pin), ISO 2339.

Documents

• CC-ISO2339-DS-2.5.pdf: 2.5 datasheet: values with levels, lengths, sources
• CC-ISO2339-SZ-2.5.pdf: 2.5 drawing: this size's values on the views
• parts.json: the part record of every length (the platform contract)

Sources

boltport-iso2339, fasten-it-din-en-22339, fasten-it-iso2339, minibearings-taper-pins, pts-taper-pins. Full citations: the method page and this size's datasheet.

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