CHA™, CFHA™, CHC™ and CFHC™ Aluminum and Stainless Steel Studs

All dimensions are in inches.

Thread Size	Type		Thread Code	Length Code "L" ±.015 (Length code is in 16ths of an inch)						Min. Sheet Thickness	Blind Mounting Hole Dia. +.003 −.000	Min. Depth of Blind Hole⁽¹⁾	A (Shank) Max.	E ±.010	C Max.	Min. Dist. Hole ℄ To Edge	Max. Hole In Attached Parts
Thread Size	Aluminum	Stainless Steel	Thread Code	.250	.375	.500	.625	.750	1.00	Min. Sheet Thickness	Blind Mounting Hole Dia. +.003 −.000	Min. Depth of Blind Hole⁽¹⁾	A (Shank) Max.	E ±.010	C Max.	Min. Dist. Hole ℄ To Edge	Max. Hole In Attached Parts
.112-40 (#4-40)	CHA	CHC	440	4	6	8	10	12	—	.062	.172	.043	.041	.205	.171	.156	.135
.112-40 (#4-40)	CFHA	CFHC	440	4	6	8	10	12	—	.093	.172	.075	.071	.205	.171	.156	.135
.138-32 (#6-32)	CHA	CHC	632	4	6	8	10	12	16	.062	.213	.043	.041	.250	.212	.188	.160
.138-32 (#6-32)	CFHA	CFHC	632	4	6	8	10	12	16	.093	.213	.075	.071	.250	.212	.188	.160
.164-32 (#8-32)	CHA	CHC	832	4	6	8	10	12	16	.062	.290	.043	.041	.328	.289	.219	.185
.164-32 (#8-32)	CFHA	CFHC	832	4	6	8	10	12	16	.093	.290	.075	.071	.328	.289	.219	.185
.190-32 (#10-32)	CHA	CHC	032	—	6	8	10	12	16	.062	.312	.043	.041	.350	.311	.250	.210
.190-32 (#10-32)	CFHA	CFHC	032	—	6	8	10	12	16	.093	.312	.075	.071	.350	.311	.250	.210

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