Molded-In Insert, 4 Thread Series

 

English Part Number	Thread Size	Minor Dia.	A	B ±.005	C	D	Knurl TPI
B256-4	2-56	.070	.156	.156	.141	.030	40
B440-4	4-40	.089	.188	.188	.171	.030*	40
B632-4	6-32	.110	.218	.219	.201	.062*	30
B832-4	8-32	.136	.250	.250	.225	.062*	30
B1024-4	10-24	.149	.281	.312	.259	.062*	30
B1032-4	10-32	.159	.281	.281	.259	.062*	30
B25020-4	1/4”-20	.201	.344	.375	.320	.094	20
B25028-4	1/4”-28	.214	.344	.375	.320	.094	20
B31218-4	5/16”-18	.257	.437	.469	.403	.094	20
B31224-4	5/16”-24	.272	.437	.469	.403	.094	20
B37516-4	3/8”-16	.312	.500	.562	.465	.094	20
B37524-4	3/8”-24	.333	.500	.562	.465	.094	20
*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
BM2-4	M2x0.4	.063	.156	.156	.141	.030	40
BM3-4	M3x0.5	.099	.188	.188	.171	.030*	40
BM3.5-4	M3.5x0.6	.115	.218	.219	.201	.062*	30
BM4-4	M4x0.7	.131	.250	.250	.225	.062*	30
BM5-4	M5x0.8	.166	.281	.281	.259	.062*	30
BM6-4	M6x1.0	.199	.344	.375	.320	.094	20
BM8-4	M8x1.25	.266	.437	.469	.403	.094	20
BM10-4	M10x1.5	.337	.500	.562	.465	.094	20
*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.

Notes: Thread Spec. Per MIL-S-7742 Brass per ASTM-B-16 300 Series Stainless Steel per MIL-S-7720 ASTM A581/A582 Dimensional Limits plus or minus .003 unless specified. Minor Thread Diameter Tolerance +.002/-.001

Part Number Example: Brass: BB632-4 Stainless: CB632-4

 

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