Standard ASME B18.8.2

Coiled spring pins shall have straigth cylindrical sides with both ends chamfered and coiled construction, multiple walls and are made in Standard, Heavy and Ligth duty series. Upon installation, the pin diameters contract and the spring reaction against the sides of the hole tends to retain the pin.

Dimensions in inches - source ANSI B 18.2.2 table 2
Nominal size or pin basic diameter	A pin diameter standard duty		A pin diameter heavy duty		A pin diameter ligth duty		B chamfer diameter	Recommended hole size		F stock thickness
	A pin diameter standard duty		A pin diameter heavy duty		A pin diameter ligth duty		B chamfer diameter	Recommended hole size		F stock thickness
	max	min	max	min	max	max	max	max	min	basic
1/32 (0.031)	0.035	0.033	-	-	-	0.029	0.029	0.032	0.031	-
(0.039)	0.044	0.041	-	-	-	0.037	0.037	0.04	0.039	-
3/64 (0.047)	0.052	0.049	-	-	-	0.045	0.045	0.048	0.047	-
(0.052)	0.057	0.054	-	-	-	0.05	0.05	0.053	0.051	-
1/16 (0.062)	0.072	0.067	0.070	0.066	0.067	0.059	0.059	0.065	0.061	0.012
5/64 (0.076)	0.088	0.083	0.086	0.082	0.083	0.075	0.075	0.081	0.077	0.018
3/32 (0.094)	0.105	0.099	0.103	0.89	0.099	0.091	0.091	0.097	0.093	0.022
7/64 (0.109)	0.120	0.114	0.118	0.113	0.114	0.106	0.106	0.112	0.108	0.028
1/8 (0.125)	0.138	0.131	0.136	0.130	0.131	0.121	0.121	0.129	0.124	0.028
5/32 (0.156)	0.171	0.163	0.168	0.161	0.163	0.152	0.152	0.160	0.155	0.032
3/16 (0.188)	0.205	0.196	0.202	0.194	0.196	0.182	0.182	0.192	0.185	0.04
7/32 (0.219)	0.223	0.228	0.235	0.226	0.228	0.214	0.214	0.224	0.217	0.048
1/4 (0.25)	0.271	0.26	0.268	0.258	0.26	0.243	0.243	0.256	0.247	0.048
5/16 (0.312)	0.337	0.324	0.334	0.322	0.324	0.304	0.304	0.319	0.308	0.062
3/8 (0.375)	0.403	0.388	0.4	0.386	0.388	0.366	0.366	0.383	0.37	0.077
7/16 (0.438)	0.469	0.452	0.466	0.45	0.452	0.427	0.427	0.446	0.431	0.077
1/2 (0.500)	0.535	0.516	0.532	0.514	0.516	0.488	0.488	0.510	0.493	0.094
5/8 (0.625)	0.661	0.642	0.658	0.640	-	0.613	0.613	0.635	0.618	0.125
3/4 (0.75)	0.787	0.768	0.784	0.766	-	0.738	0.738	0.760	0.743	0.15

Coiled spring pins, Inch sizes

Dimensions in inches - source ANSI B 18.2.2 table 2
Nominal size or pin basic diameter	A pin diameter standard duty		A pin diameter heavy duty		A pin diameter ligth duty		B chamfer diameter	Recommended hole size		F stock thickness
	A pin diameter standard duty		A pin diameter heavy duty		A pin diameter ligth duty		B chamfer diameter	Recommended hole size		F stock thickness
	max	min	max	min	max	max	max	max	min	basic
1/32 (0.031)	0.035	0.033	-	-	-	0.029	0.029	0.032	0.031	-
(0.039)	0.044	0.041	-	-	-	0.037	0.037	0.04	0.039	-
3/64 (0.047)	0.052	0.049	-	-	-	0.045	0.045	0.048	0.047	-
(0.052)	0.057	0.054	-	-	-	0.05	0.05	0.053	0.051	-
1/16 (0.062)	0.072	0.067	0.070	0.066	0.067	0.059	0.059	0.065	0.061	0.012
5/64 (0.076)	0.088	0.083	0.086	0.082	0.083	0.075	0.075	0.081	0.077	0.018
3/32 (0.094)	0.105	0.099	0.103	0.89	0.099	0.091	0.091	0.097	0.093	0.022
7/64 (0.109)	0.120	0.114	0.118	0.113	0.114	0.106	0.106	0.112	0.108	0.028
1/8 (0.125)	0.138	0.131	0.136	0.130	0.131	0.121	0.121	0.129	0.124	0.028
5/32 (0.156)	0.171	0.163	0.168	0.161	0.163	0.152	0.152	0.160	0.155	0.032
3/16 (0.188)	0.205	0.196	0.202	0.194	0.196	0.182	0.182	0.192	0.185	0.04
7/32 (0.219)	0.223	0.228	0.235	0.226	0.228	0.214	0.214	0.224	0.217	0.048
1/4 (0.25)	0.271	0.26	0.268	0.258	0.26	0.243	0.243	0.256	0.247	0.048
5/16 (0.312)	0.337	0.324	0.334	0.322	0.324	0.304	0.304	0.319	0.308	0.062
3/8 (0.375)	0.403	0.388	0.4	0.386	0.388	0.366	0.366	0.383	0.37	0.077
7/16 (0.438)	0.469	0.452	0.466	0.45	0.452	0.427	0.427	0.446	0.431	0.077
1/2 (0.500)	0.535	0.516	0.532	0.514	0.516	0.488	0.488	0.510	0.493	0.094
5/8 (0.625)	0.661	0.642	0.658	0.640	-	0.613	0.613	0.635	0.618	0.125
3/4 (0.75)	0.787	0.768	0.784	0.766	-	0.738	0.738	0.760	0.743	0.15

Full list of Suppliers of Coiled spring pins, Inch sizes

Italy

Buora d.p.u. S.r.l.

Founded in 1969, Buora D.P.U. is a distributor certified following ISO 9001.

The company offers the complete range of high strength fasteners, ready on stock, both coarse and fine pitches with metric and inch threads.

Distributor of prestigious brands such as UNBRAKO and NORD-LOCK, for Buora D.P.U. the service always comes first, therefore there is not minimum quantity required.

Germany

The portal for fasteners and fixing elements

Suppliers of Coiled spring pins, Inch sizes

Technical data

Standard ASME B18.8.2

Details

Buora d.p.u. S.r.l.

Pfitzer Verbindungstechnik Gmbh

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