ASTM A105 Coupling

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ASTM A105 Half Coupling

SA105 Full Coupling

A105 Carbon Steel Reducer Coupling

ASME SA105N One Side Threaded Coupling

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• ASTM A105 Threaded Coupling Dimensions
• SA105 Carbon Steel Socket Weld Coupling Dimensions

Nominal Pipe Size	End to End		Minimum Length of Thread		Outside Diameter
Inch.	Half Coupling	Full Coupling			# 6000	# 3000
	A/2	A	C	B	D	D
2 1/2	A/2	92	23.6	28.9	108	92
1/4	A/2	35	8.1	10.2	25	19
1/2	A/2	48	10.9	13.6	38	28
1/8	A/2	32	6.4	6.7	22	16
3/8	A/2	38	9.1	10.4	32	22
3	A/2	108	25.9	30.5	127	108
3	A/2	108	25.9	30.5	127	108
1	A/2	60	14.7	17.3	57	44
4	A/2	121	27.7	33	159	140
3/4	A/2	51	12.7	13.9	44	35
1 1/4	A/2	67	17	18	64	57
2	A/2	86	19	19.2	92	76
1 1/2	A/2	79	17.8	18.4	76	64
	All Dimensions are in mm

Nominal Pipe Size	Outer Diameter	Socket Bore Diameter	Bore Diameter of Fittings	Bore Diameter of Fittings	Bore Diameter of Fittings	Wall Thickness # 3000	Wall Thickness # 3000	Wall Thickness # 6000	Wall Thickness # 6000	Wall Thickness # 9000	Wall Thickness # 9000	Full Coupling	Full Coupling	Half Coupling	Half Coupling
Inch.	A	B	C – 6000	C – 3000	C – 9000	D	D	D	D	D	D	L2	L1	L2	L1
		Maximum Minimum	Maximum Minimum	Maximum Minimum	Maximum Minimum	Minimum	Average	Minimum	Average	Minimum	Average
2	B+D	61.7 61.2	43.6 42.1	53.3 51.7	38.9 37.4	6.04	6.93	9.5	10.92	12.12	13.84	19.0	16.0	41.0	16.0
3/8	B+D	18.0 17.6	9.9 8.4	13.3 11.8		3.50	4.01	4.37	5.03			6.5	9.5	17.5	9.5
3	B+D	90.3 89.8		79.4 76.4		8.30	9.52					19.0	16.0	44.5	16.0
1/4	B+D	14.6 14.2	7.1 5.6	10.0 8.5		3.30	3.78	4.01	4.6			6.5	9.5	16.0	9.5
1	B+D	34.3 33.9	21.5 19.9	27.4 25.9	16.0 14.4	4.98	5.69	6.93	7.92	9.96	11.38	12.5	12.5	28.5	12.5
4	B+D	103.8 100.7		103.8 100.7		9.35	10.69					19.0	16.0	48.0	16.0
1 1/4	B+D	43.1 42.7	30.2 28.7	35.8 34.3	23.5 22.0	5.28	6.07	6.93	7.92	10.62	12.14	12.5	12.5	30.0	12.5
3/4	B+D	27.6 27.2	16.3 14.8	21.7 20.2	11.8 10.3	4.27	4.90	6.04	6.96	8.56	9.78	9.5	12.5	24.0	12.5
1/2	B+D	22.2 21.8	12.5 11.0	16.6 15.0	7.2 5.6	4.09	4.67	5.18	5.97	8.18	9.35	9.5	9.5	22.5	9.5
1/8	B+D	11.2 10.8	4.8 3.2	7.6 6.1		3.18	3.18	3.43	3.96			6.5	9.5	16.0	9.5
1 1/2	B+D	49.2 48.8	34.7 33.2	41.6 40.1	28.7 27.2	5.54	6.35	7.8	8.92	11.12	12.7	12.5	12.5	32.0	12.5
2 1/2	B+D	74.4 73.9		64.2 61.2		7.67	8.76					19.0	16.0	43.0	16.0
	All Dimensions are in mm

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