Key Inserts – Solid, Stainless Steel (Inch)

Threaded Inserts

Product Information

Key Inserts – Solid, Stainless Steel (Inch)

Solid Key Inserts are ideal for relocating a drilled or tapped hole. This threaded plug installs quickly, and the locking keys positively prevent the insert from rotating. Solid Key Inserts are available in a wide range of inch and metric external thread sizes. Inch sizes are shown here, ranging from 5/16-18 to 1-3/8"-12.

Key Inserts are installed using standard drills and taps, but the required tap-drill size is slightly larger than normal for that OD thread size. See Installation Data table below for the appropriate tap-drill size.

Application Information

Before Repair (left). After Repair (right).

Installation/Removal

Key Inserts are installed using standard drills and taps, but the required tap-drill size is slightly larger than normal for that OD thread size. See Installation Data table below for the appropriate tap-drill size. Locking keys must be driven down into the parent material during installation, providing a positive mechanical lock against rotation. See tables below for installation tools.

Click here for detailed Installation & Removal Instructions

INSTALLATION DATA
PART NO.	REQUIRED TAP DRILL	COUNTERSINK DIA	MINIMUM THREAD DEPTH	STANDARD TAP
CL-51618-KSS	.272	.323	.37	5/16-18
CL-3816-KSS	.332	.385	.37	3/8-16
CL-71614-KSS	.397	.447	.43	7/16-14
CL-1213-KSS	.453	.510	.50	1/2-13
CL-91612-KSS	.516	.572	.56	9/16-12
CL-5811-KSS	.578	.635	.68	5/8-11
CL-111611-KSS	.641	.700	.75	11/16-11-NS
CL-131616-KSS	.766	.822	.94	13/16-16
CL-7814-KSS	.828	.885	1.00	7/8-14
CL-11812-KSS	1.062	1.145	1.31	1-1/8"-12
CL-11412-KSS	1.187	1.270	1.44	1-1/4"-12
CL-13812-KSS	1.312	1.395	1.56	1-3/8"-12

REMOVAL DATA
PART NO.	REMOVAL DRILL SIZE	REMOVAL DRILL DEPTH
CL-51618-KSS	7/32	1/8
CL-3816-KSS	9/32	1/8
CL-71614-KSS	11/32	3/16
CL-1213-KSS	13/32	3/16
CL-91612-KSS	15/32	3/16
CL-5811-KSS	17/32	3/16
CL-111611-KSS	19/32	3/16
CL-131616-KSS	23/32	3/16
CL-7814-KSS	25/32	3/16
CL-11812-KSS	31/32	5/16
CL-11412-KSS	1-3/32	5/16
CL-13812-KSS	1-7/32	5/16

Material

ITEM	MATERIAL	HEAT TREAT	FINISH	DFARS	RoHS
Body	303 Stainless Steel	-	-	✔	✔
Keys	302 Stainless Steel	-	-	✔	✔

Click here for detailed material and finish specifications.

California residents click here for Prop 65 information.

Key Inserts – Solid, Stainless Steel (Inch)

Key Insert

PART NO.	EXTERNAL THREAD	L LENGTH	K MINIMUM	SHEAR ENGAGEMENT AREA (sq in)
CL-51618-KSS	5/16-18	.31	.216	.152
CL-3816-KSS	3/8-16	.31	.285	.190
CL-71614-KSS	7/16-14	.37	.341	.284
CL-1213-KSS	1/2-13	.43	.403	.359
CL-91612-KSS	9/16-12	.50	.465	.498
CL-5811-KSS	5/8-11	.62	.528	.717
CL-111611-KSS	11/16-11-NS	.68	.590	.888
CL-131616-KSS	13/16-16	.81	.716	1.249
CL-7814-KSS	7/8-14	.87	.778	1.487
CL-11812-KSS	1-1/8"-12	1.12	.970	2.490
CL-11412-KSS	1-1/4"-12	1.25	1.095	3.137
CL-13812-KSS	1-3/8"-12	1.37	1.220	3.838