Key Inserts – Heavy Duty, Stainless Steel (Metric)

Threaded Inserts

Product Information

Key Inserts – Heavy Duty, Stainless Steel (Metric)

General-purpose threaded inserts with a thick, heavy-duty thread wall, suitable for most applications. Key Inserts are ideal for thread reinforcement, especially when the mating stud or bolt will be removed frequently. They provide strong, permanent steel threads in almost any parent material – ferrous, non-ferrous, or non-metallic. Key Inserts are also well suited for quick repair of stripped, damaged, or worn threads. Locking keys positively prevent the insert from rotating.

Heavy-duty stainless steel Key Inserts are available in a wide range of inch and metric ID thread sizes. The following metric sizes are shown on this page:

M5 to M24 Metric Coarse

M8x1 to M12x1.25 Metric Fine

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

Key Inserts are often used to reinforce tapped holes in aluminum tooling plates.

Repair Kits contain an installation tool and several inserts of a given size.

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 (mm)	MINIMUM THREAD DEPTH (mm)	STANDARD TAP
CLM-58-SKSM	8.8mm or S	10.25	11.5	M10x1.25
CLM-61-SKSM	10.8mm or 27/64"	12.25	13.5	M12x1.25
CLM-8125-SKSM	13mm or 1/2"	14.25	15.5	M14x1.5
CLM-81-SKSM	13mm or 1/2"	14.25	15.5	M14x1.5
CLM-1015-SKSM	15mm or 37/64"	16.25	17.5	M16x1.5
CLM-10125-SKSM	15mm or 37/64"	16.25	17.5	M16x1.5
CLM-12175-SKSM	17mm or 21/32"	18.25	19.5	M18x1.5
CLM-12125-SKSM	17mm or 21/32"	18.25	19.5	M18x1.5
CLM-162-SKS	20.5mm or 13/16"	22.5	24.5	M22x1.5
CLM-2025-SKS	28mm or 1-7/64"	30	34.5	M30x2
CLM-243-SKS	31mm or 1-7/32"	33.5	37.5	M33x2

REMOVAL DATA
PART NO.	REMOVAL DRILL SIZE	REMOVAL DRILL DEPTH (mm)
CLM-58-SKSM	7.5mm or 19/64"	4.8
CLM-61-SKSM	9.5mm or 3/8"	4.8
CLM-8125-SKSM	11.5mm or 29/64"	4.8
CLM-81-SKSM	11.5mm or 29/64"	4.8
CLM-1015-SKSM	13.5mm or 17/32"	4.8
CLM-10125-SKSM	13.5mm or 17/32"	4.8
CLM-12175-SKSM	15.5mm or 39/64"	4.8
CLM-12125-SKSM	15.5mm or 39/64"	4.8
CLM-162-SKS	17.5mm or 11/16"	6.5
CLM-2025-SKS	26mm or 1-1/64"	6.5
CLM-243-SKS	29mm or 1-9/64"	6.5

Material

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

Click here for detailed material and finish specifications.

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Key Inserts – Heavy Duty, Stainless Steel (Metric)

Key Insert

PART NO.	INTERNAL THREAD	INTERNAL THREAD PITCH (mm)	EXTERNAL THREAD	EXTERNAL THREAD PITCH (mm)	LENGTH (mm)	SHEAR ENGAGEMENT AREA (sq mm)
CLM-58-SKSM	M5	.8	M10x1.25	1.25	10	177
CLM-61-SKSM	M6	1	M12x1.25	1.25	12	266
CLM-8125-SKSM	M8	1.25	M14x1.5	1.5	14	342
CLM-81-SKSM	M8x1	1	M14x1.5	1.5	14	342
CLM-1015-SKSM	M10	1.5	M16x1.5	1.5	16	470
CLM-10125-SKSM	M10x1.25	1.25	M16x1.5	1.5	16	470
CLM-12175-SKSM	M12	1.75	M18x1.5	1.5	18	529
CLM-12125-SKSM	M12x1.25	1.25	M18x1.5	1.5	18	529
CLM-2025-SKS	M20	2.5	M30x2	2	30	1770