Molded Type Thread Blind Inserts 4 Thread

American Part Number	Thread Size	Minor Dia.	A	B ±.005	C	D	Knurl TPI	Brass	Stainless Steel	Aluminum

B256-4	2-56	.070	.156	.156	.141	.030	40	Select	Select	Select
B440-4	4-40	.089	.188	.188	.171	.030*	40	Select	Select	Select
B632-4	6-32	.110	.218	.219	.201	.062*	30	Select	Select	Select
B832-4	8-32	.136	.250	.250	.225	.062*	30	Select	Select	Select
B1024-4	10-24	.149	.281	.312	.259	.062*	30	Select	Select	Select
B1032-4	10-32	.159	.281	.281	.259	.062*	30	Select	Select	Select
B25020-4	1/4”-20	.201	.344	.375	.320	.094	20	Select	Select	Select
B25028-4	1/4”-28	.214	.344	.375	.320	.094	20	Select	Select	Select
B31218-4	5/16”-18	.257	.437	.469	.403	.094	20	Select	Select	Select
B31224-4	5/16”-24	.272	.437	.469	.403	.094	20	Select	Select	Select
B37516-4	3/8”-16	.312	.500	.562	.465	.094	20	Select	Select	Select
B37524-4	3/8”-24	.333	.500	.562	.465	.094	20	Select	Select	Select
*Non standard “D” dimension available in both .030 and .062 (BB832-4 .030 or BBM4-4 .030) Material Designation: Insert the letter “B” Brass or “C” Stainless as the first digit of part.

Metric Part Number	Metric Thread Size	Metric Minor Dia.	A	B ±.005	C	D	Knurl TPI	Brass	Stainless Steel	Aluminum

BM2-4	M2x0.4	.063	.156	.156	.141	.030	40	Select	Select	Select
BM3-4	M3x0.5	.099	.188	.188	.171	.030*	40	Select	Select	Select
BM3.5-4	M3.5x0.6	.115	.218	.219	.201	.062*	30	Select	Select	Select
BM4-4	M4x0.7	.131	.250	.250	.225	.062*	30	Select	Select	Select
BM5-4	M5x0.8	.166	.281	.281	.259	.062*	30	Select	Select	Select
BM6-4	M6x1.0	.199	.344	.375	.320	.094	20	Select	Select	Select
BM8-4	M8x1.25	.266	.437	.469	.403	.094	20	Select	Select	Select
BM10-4	M10x1.5	.337	.500	.562	.465	.094	20	Select	Select	Select
*Non standard “D” dimension available in both .030 and .062 (BB832-4 .030 or BBM4-4 .030) Material Designation: Insert the letter “B” Brass or “C” Stainless as the first digit of part.