Inch Dimensions of Reducing Inserts Type 1 as per MSS-SP-79

NPS1	NPS2	A Laying Length	B Socket Bore Dia.	C Min. Wall Thickness	D Shank Bore Dia	L Min. Socket Depth	SD Shank Dia	SL Shank Length
3/8	1/4	0.750	0.565	0.149	0.364	0.380	0.675	0.560
1/2	3/8	0.810	0.700	0.158	0.493	0.380	0.840	0.620
1/2	1/4	0.810	0.565	0.149	0.364	0.380	0.840	0.620
3/4	1/2	0.880	0.865	0.184	0.622	0.380	1.050	0.690
1	3/4	0.940	1.075	0.193	0.824	0.500	1.315	0.750
1-1/4	1	1.000	1.340	0.224	1.049	0.500	1.660	0.810
1-1/2	1-1/4	1.120	1.685	0.239	1.380	0.500	1.900	0.880
2	1-1/2	1.250	1.925	0.250	1.610	0.500	2.375	1.000
2-1/2	2	1.810	2.416	0.273	2.067	0.620	2.875	1.500
3	2-1/2	1.500	2.916	0.345	2.469	0.620	3.500	1.250
NPS1	NPS2	A Laying Length	B Socket Bore Dia.	C Min. Wall Thickness	D Shank Bore Dia	L Min. Socket Depth	SD Shank Dia	SL Shank Length

NPS1	NPS2	A Laying Length	B Socket Bore Dia.	C Min. Wall Thickness	D Shank Bore Dia	L Min. Socket Depth	SD Shank Dia	SL Shank Length
3/8	1/4	0.840	0.565	0.181	0.250	0.380	0.675	0.620
1/2	3/8	0.910	0.700	0.198	0.359	0.380	0.840	0.620
1/2	1/4	0.810	0.565	0.181	0.250	0.380	0.840	0.620
3/4	1/2	1.000	0.865	0.235	0.464	0.380	1.050	0.750
3/4	3/8	0.880	0.700	0.198	0.359	0.380	1.050	0.750
1	3/4	1.120	1.075	0.274	0.612	0.500	1.315	0.810
1	1/2	1.120	0.865	0.235	0.464	0.380	1.315	0.810
1-1/4	1	1.190	1.340	0.312	0.815	0.500	1.660	0.880
1-1/2	1	1.150	1.340	0.312	0.815	0.500	1.900	1.000
2	1-1/2	1.530	1.925	0.351	1.338	0.500	2.375	1.130
2-1/2	2	1.680	2.416	0.430	1.687	0.620	2.875	1.250
3	2-1/2	2.250	2.916	0.469	2.125	0.620	3.500	1.750
NPS1	NPS2	A Laying Length	B Socket Bore Dia.	C Min. Wall Thickness	D Shank Bore Dia	L Min. Socket Depth	SD Shank Dia	SL Shank Length

The Piping Engineering World