2.5 mm Spring Pin (Roll Pin), ISO 8752

This page has 15 lengths from 4 to 30 mm, each as simplified STEP of the 2.5 mm spring pin (ISO 8752), which has a 0.5 mm wall and 2.8 to 2.9 mm across before it is fitted.

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

• Also searched as: 2.5 mm pin, 2.5 mm x 4 to 2.5 mm x 30 pins
• Model id: iso8752-d2-5
• Standard: ISO 8752:2009 · size 2.5 mm

Lengths

Length (mm)	Part key	Simplified
4	iso8752-d2-5x4	STEP
5	iso8752-d2-5x5	STEP
6	iso8752-d2-5x6	STEP
8	iso8752-d2-5x8	STEP
10	iso8752-d2-5x10	STEP
12	iso8752-d2-5x12	STEP
14	iso8752-d2-5x14	STEP
16	iso8752-d2-5x16	STEP
18	iso8752-d2-5x18	STEP
20	iso8752-d2-5x20	STEP
22	iso8752-d2-5x22	STEP
24	iso8752-d2-5x24	STEP
26	iso8752-d2-5x26	STEP
28	iso8752-d2-5x28	STEP
30	iso8752-d2-5x30	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d	Diameter, nominal		2.5		2.5	nominal	L1
d1	Outside diameter before mounting	2.8		2.9	2.85	midpoint of min–max	L1
d2	Inside diameter before mounting		1.8 ref		1.8	reference value	L1
a	End chamfer length	0.4		0.6	0.5	midpoint of min–max	L1
s	Wall thickness		0.5		0.5	nominal	L1
w	Slot width		1.257		1.257	nominal	L0 (nom: one source)
shear	Minimum double shear strength	4.38			4.38	single limit (min), modeled at the limit	L1

Drawing

As a PDF: CC-ISO8752-SZ-2.5.pdf.

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

The 2.5 mm is number 2, counting from the smallest, of the 9 ISO 8752 spring pins published here, from 2 mm to 8 mm.

• Diameter, nominal (d): 2.5 mm on the 2.5 mm spring pin, against 2 mm on the 2 mm and 3 mm on the 3 mm.
• Outside diameter before mounting (d1): 2.8 to 2.9 mm on the 2.5 mm spring pin, against 2.3 to 2.4 mm on the 2 mm and 3.3 to 3.5 mm on the 3 mm.
• Inside diameter before mounting (d2): 1.8 mm (reference) on the 2.5 mm spring pin, against 1.5 mm (reference) on the 2 mm and 2.1 mm (reference) on the 3 mm.
• End chamfer length (a): 0.4 to 0.6 mm on the 2.5 mm spring pin, against 0.35 to 0.55 mm on the 2 mm and 0.5 to 0.7 mm on the 3 mm.
• Wall thickness (s): 0.5 mm on the 2.5 mm spring pin, against 0.4 mm on the 2 mm and 0.6 mm on the 3 mm.
• Slot width (w): 1.257 mm on the 2.5 mm spring pin, against 1.257 mm on the 2 mm and 1.571 mm on the 3 mm.
• Minimum double shear strength (shear): at least 4.38 mm on the 2.5 mm spring pin, against at least 2.82 mm on the 2 mm and at least 6.32 mm on the 3 mm.

Other sizes

• One size smaller: 2 mm Spring Pin (Roll Pin), ISO 8752.
• One size larger: 3 mm Spring Pin (Roll Pin), ISO 8752.

Documents

• CC-ISO8752-DS-2.5.pdf: 2.5 datasheet: values with levels, lengths, sources
• CC-ISO8752-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

fasten-it-iso8752, fasteners-eu-iso8752, fuller-iso8752, iso8752-2009-sample, rule-iso8752-slot. Full citations: the method page and this size's datasheet.

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