Metric Dimensions of Socket Welding Union as per MSS-SP-83

NPS	A Pipe End OD	B (Min.) Socket Bore Dia	B (Max) Socket Bore Dia	C Min. Wall Thickness	D (Min.) Water Way Bore	D (max) Water Way Bore	E (Min.) Laying Length	E (Max) Laying Length	F (Min) Male Flange Thickness	G (Min.) Nut Thickness	H Threads per Inch	J (Min.) Nut Bearing	K (Min.) Depth of Socket	L (Nominal) Length of Assembly	N Clearance for Nut Assembly
1/8	21.84	10.67	11.18	3.18	6.07	7.59	22.35	19.05	3.18	3.18	16	1.24	9.65	41.40	50.80
1/4	21.84	14.10	14.61	3.30	8.48	10.01	22.35	19.05	3.18	3.18	16	1.24	9.65	41.40	50.80
3/8	25.91	17.53	18.03	3.51	11.76	13.28	26.92	20.57	3.43	3.43	14	1.37	9.65	45.97	55.88
1/2	31.24	21.72	22.23	4.09	15.04	16.56	26.92	20.57	3.68	3.68	14	1.50	9.65	49.02	58.42
3/4	37.08	27.05	27.56	4.27	20.17	21.69	31.75	25.40	4.06	4.06	11	1.68	12.70	56.90	66.04
1	4.27	33.78	34.29	4.98	25.88	27.41	34.29	26.16	4.57	4.45	11	1.85	12.70	61.98	78.74
1-1/4	54.86	42.55	43.05	5.28	34.29	35.81	40.64	32.51	5.33	5.21	10	2.13	12.70	71.12	93.98
1-1/2	61.47	48.64	49.15	5.54	40.13	41.66	42.16	34.04	5.84	5.59	10	2.31	12.70	76.45	111.76
2	75.18	61.11	61.62	6.05	51.74	53.26	45.47	37.34	6.60	6.35	10	2.69	15.75	86.11	132.08
2-1/2	91.69	73.81	74.45	7.67	61.19	64.24	61.72	52.07	7.49	7.11	8	3.07	15.75	102.36	149.86
3	109.22	89.79	90.42	8.31	76.40	79.45	63.75	53.59	8.26	8.00	8	3.53	15.75	108.97	175.26
NPS	A Pipe End OD	B (Min.) Socket Bore Dia	B (Max) Socket Bore Dia	C Min. Wall Thickness	D (Min.) Water Way Bore	D (max) Water Way Bore	E (Min.) Laying Length	E (Max) Laying Length	F (Min) Male Flange Thickness	G (Min.) Nut Thickness	H Threads per Inch	J (Min.) Nut Bearing	K (Min.) Depth of Socket	L (Nominal) Length of Assembly	N Clearance for Nut Assembly

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