
BIGSERT THREAD REPAIR KIT OVERSIZED THREAD REPAIR KITS AND INSERTS Used for threads which have been previously repaired and failed. These kits will repair holes that were repaired by helicoil, perma-coil, uni-coil, recoil or any other similar coil style insert that has failed.
	BIG-SERT® is a heavy wall solid bushing, easy to install with positive placement. BIG-SERT® gives increased load protection for critical use. BIG-SERT® will repair oversize holes which have previously been repaired.			KIT CONTENTS: Drill Counterbore Tap Insert Driver Five (5) Steel Inserts
BIG-SERT ® THREAD REPAIR KITS AND INSERTS NOTE: Lengths marked in RED are the inserts supplied in the kits. Click here for Engineering data
INCH				METRIC
KIT SIZE	PART NO.	INSERTS		KIT SIZE	PART NO.		INSERTS
		LENGTH mm	PART NO.				LENGTH mm	PART NO.
10-32	6605032S	.187	66150324	M5x0.8	6605508		7.6	66155081
1/4-20	6605420	.380	66154201				10.0	66155083
		.500	66154203
1/4-28	6605448	.380	66154481	M6x1.0	6605610		9.4	66156101
		.500	66154483				12.0	66156103
					6605610A includes 9.4mm tapguide
					6605610B includes 12mm tapguide
5/16-18	6605561	.450	66155611	M7x1.0	6605710		10.0	66157101
		.620	66155613	M8x1.25	6605812		11.7	66158121
							16.2	66158123
							18.0	66158125
				M8x1.0	6605810		11.7	66158101
5/16-24	6605562	.450	66155621	M10x1.0	6605011		9.0	66150111
		.620	66155623				15.0	66150113
3/8-16	6605381	.400	66153810	M10x1.25	6605012		14.0	66150121
		.520	66153811				20.0	66150123
		.750	66153813				24.5	66150125
		1.000	66153815
		1.250	66153817
3/8-24	6605382	.520	66153821	M10x1.5	6605015		9.4	66150150
		.750	66153823				11.0	66150157
							14.0	66150151
							20.0	66150153
							24.5	66150155
							30.0	66150159
7/16-14	6605761	.600	66157611	M11x1.25 Not for deep holes	6605112D		30.0	66151125
		.870	66157613
		1.000	66157615
		1.250	66157617
7/16-20	6605762	.600	66157621	M12x1.5	6605215		9.2	66152150
		.870	66157623				16.2	66152151
							24.0	66152153
							30.0	66152155
1/2-13	6605121	.480	66151210	M12x1.75	6605217		12.0	66152170
		.650	66151211				16.2	66152171
		1.000	66151213				24.0	66152173
							30.0	66152175
1/2-20	6605122	.650	66151221	M12x1.25	6605212		9.0	66152120
		1.000	66151223				15.0	66152121
							17.5	66152122
							24.0	66152123
							30.0	66152125

Optional tool
TAP GUIDES INSURE THAT THREADS ARE SQUARE TO SURFACE. The lower portion of the tap guide should remain as square as possible to the engine surface. Turn the tap slowly while making sure the guide remains flush.
INCH SIZE			PART NO.		METRIC SIZE		PART NO.
1/4-20			66275405		M6x1.0		66275605
1/4-28			66275405		M8x1.25		66275825
5/16-18			66275515		M10x1.0		66275025
5/16-24			66275515		M10x1.25		66275025
3/8-16			66275315		M12x1.25		66275255
3/8-24			66275315		M12x1.5		66275255
7/16-14			66257655		M12x1.75		66275255
7/16-20			66257655
1/2-13			66275115
1/2-20			66275115