ASME B18.8.2 Grooved T-Head Cotter Pins

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Dimensions of Grooved T-Head Cotter Pins
Nominal Size or Basic Shank Diameter	A		B		N	O		P		Q		Recommended Hole Size
	Shank Diameter		Expanded Shank Diameter		Length	Head Diameter		Head Height		Head Width		Recommended Hole Size
	Max	Min	Max	Min	Max	Max	Min	Max	Min	Max	Min	Max	Min
5/32(0.156)	0.154	0.150	0.168	0.163	0.08	0.26	0.24	0.11	0.09	0.18	0.15	0.161	0.156
3/16(0.187)	0.186	0.182	0.201	0.195	0.09	0.30	0.28	0.13	0.11	0.22	0.18	0.193	0.187
1/4(0.250)	0.248	0.244	0.265	0.259	0.12	0.40	0.38	0.17	0.15	0.28	0.24	0.257	0.250
5/16(0.312)	0.310	0.305	0.326	0.320	0.16	0.51	0.48	0.21	0.19	0.34	0.30	0.319	0.312
23/64(0.359)	0.358	0.353	0.375	0.369	0.18	0.57	0.54	0.24	0.22	0.38	0.35	0.366	0.359
1/2(0.500)	0.498	0.493	0.520	0.514	0.25	0.79	0.76	0.32	0.30	0.54	0.49	0.508	0.500

Groove Length Dimensions for Grooved T-Head Cotter Pins
Nominal Length	Nominal Size
	5/32		3/16		1/4		5/16		23/64		1/2
	V,Groove Length
	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min
3/4	0.50	0.48	0.50	0.48	-	-	-	-	-	-	-	-
7/8	0.50	0.48	0.50	0.48	-	-	-	-	-	-	-	-
1	0.62	0.60	0.62	0.60	0.62	0.60	-	-	-	-	-	-
1-1/8	0.68	0.66	0.68	0.66	0.68	0.66	0.68	0.66	-	-	-	-
1-1/4	-	-	0.75	0.73	0.75	0.73	0.75	0.73	0.75	0.73	-	-
1-1/2	-	-	-	-	0.88	0.86	0.88	0.86	0.88	0.86	-	-
1-3/4	-	-	-	-	-	-	1.00	0.98	1.00	0.98	-	-
2	-	-	-	-	-	-	1.25	1.23	1.25	1.23	1.25	1.23
2-1/4	-	-	-	-	-	-	-	-	-	-	1.31	1.29
2-1/2	-	-	-	-	-	-	-	-	-	-	1.50	1.48
2-3/4	-	-	-	-	-	-	-	-	-	-	1.62	1.60
3	-	-	-	-	-	-	-	-	-	-	1.85	1.83

This Website describes DIN standard Fastener in China.Wenzhou Nanlong Import & Export Trading CO.,LTD.(China)-There are ASME B18.8.2 Grooved T-Head Cotter Pins.And the the material are stainless steel (TP304-18-8,316,316L,310S.309S..317L.347H,904L...),carbon steel (C1018 C1022),aluminium,brass, titanium & titanium alloy(Ti G1,Gr2,G4,Gr5,G7) and so no.