Helical Insert Prewinder

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Thread Size

Helical Insert Style

System of Measurement

Thread Direction

Installed Length

Thread Pitch

Thread Type

Drill Bit Size

Number of Inserts Included

Thread Spacing

Coarse

Fine

Extra Fine

DFARS Specialty Metals

REACH

RoHS

Compliant with Exemptions

Not Compliant

Export Control Classification Number (ECCN)

Pipe Size

279 Products

Installation Tools for Helical Inserts

Screw an insert onto these tools and drive them a quarter to half-turn below the material’s surface. They’re compatible with helical inserts that have a prong.

Style F cannot be used with screw-lock inserts.

Inch

For Right-Hand Thread
For Thread Size	Style		Each
1-64	A	000000000	0000000
2-56	B	000000000	00000
3-48	C	000000000	000000
3-56	D	000000000	000000
4-40	E	000000000	000000
4-40	F	000000000	00000
4-48	E	000000000	000000
5-40	E	000000000	000000
6-32	E	000000000	000000
6-32	F	000000000	00000
6-40	E	000000000	000000
8-32	E	000000000	000000
8-32	F	000000000	00000
8-36	E	000000000	000000
10-24	E	000000000	000000
10-24	F	000000000	00000
10-32	E	000000000	000000
10-32	G	000000000	00000
12-24	E	000000000	000000
1/4"-20	E	000000000	000000
1/4"-20	F	000000000	00000
1/4"-28	E	000000000	000000
1/4"-28	G	000000000	00000
5/16"-18	E	000000000	000000
5/16"-18	F	000000000	00000
5/16"-24	E	000000000	000000
5/16"-24	H	000000000	00000
3/8"-16	E	000000000	000000
3/8"-16	F	000000000	00000
3/8"-24	E	000000000	000000
3/8"-24	G	000000000	00000
7/16"-14	E	000000000	000000
7/16"-14	F	000000000	00000
7/16"-20	E	000000000	000000
7/16"-20	G	000000000	00000
1/2"-13	E	000000000	000000
1/2"-13	F	000000000	00000
1/2"-20	D	000000000	000000
1/2"-20	G	000000000	00000
9/16"-12	D	000000000	00000
9/16"-18	J	000000000	000000
5/8"-11	D	000000000	00000
5/8"-11	F	000000000	00000
5/8"-18	H	000000000	00000
5/8"-18	J	000000000	000000
3/4"-10	D	000000000	00000
3/4"-10	F	000000000	00000
3/4"-16	A	000000000	00000
3/4"-16	J	000000000	000000
7/8"-9	D	000000000	00000
7/8"-14	J	000000000	000000
1"-8	D	000000000	00000
1"-12	J	000000000	000000
1"-14	J	000000000	000000
1 1/4"-7	D	000000000	000000
1 1/4"-8	K	000000000	00000
1 1/4"-12	J	000000000	000000
1 1/2"-8	K	000000000	00000
1 3/4"-8	K	000000000	00000

For Left-Hand Thread
For Thread Size	Style		Each
1/4"-20	L	000000000	000000
1/4"-28	L	000000000	00000
5/16"-18	L	000000000	00000
5/16"-24	L	000000000	00000
3/8"-16	L	000000000	00000
3/8"-24	L	000000000	00000
1/2"-13	K	000000000	00000
1/2"-20	K	000000000	00000
5/8"-11	K	000000000	00000
5/8"-18	K	000000000	00000
3/4"-10	K	000000000	00000

Metric

For Thread
Size	Pitch, mm	Style		Each
For Right-Hand Thread
M2	0.4	A	000000000	0000000
M2.2	0.45	B	000000000	00000
M2.5	0.45	E	000000000	000000
M3	0.5	E	000000000	000000
M3.5	0.6	E	000000000	000000
M4	0.7	E	000000000	000000
M5	0.8	E	000000000	000000
M5	0.8	G	000000000	00000
M6	1	E	000000000	000000
M6	1	G	000000000	00000
M7	1	E	000000000	000000
M8	1	E	000000000	000000
M8	1.25	E	000000000	000000
M8	1.25	F	000000000	00000
M10	1	E	000000000	000000
M10	1.25	E	000000000	000000
M10	1.5	E	000000000	000000
M10	1.5	F	000000000	00000
M12	1.25	E	000000000	000000
M12	1.5	E	000000000	000000
M12	1.75	E	000000000	000000
M12	1.75	F	000000000	00000
M14	1.5	J	000000000	000000
M14	2	J	000000000	000000
M16	1.5	M	000000000	000000
M16	2	E	000000000	000000
M18	2.5	D	000000000	000000
M20	1.5	M	000000000	000000
M20	2.5	J	000000000	000000
M24	3	K	000000000	00000
M30	3.5	K	000000000	00000
M36	4	K	000000000	00000

BSPP

For Right-Hand Thread
For Pipe Size	Style		Each
1/8	L	000000000	000000
1/4	K	000000000	00000
3/8	K	000000000	00000
1/2	K	000000000	00000

NPT

For Right-Hand Thread
For Pipe Size	Style		Each
1/8	E	000000000	0000000
1/4	E	000000000	000000
3/8	J	000000000	000000
1/2	J	000000000	000000

Installation Tools for Helical Inserts without Prong

Screw an insert onto these tools and drive them a quarter to half-turn below the material’s surface.

Tools with a hollow handle store the tip.

Replacement tips (sold separately) include one installation tip, two pins, and two springs. Tip for 10-32 internal thread size does not require springs and pins.

Inch

Installation Tools					Replacement Tips
For Thread Size	Style	Features		Each		Each
0-80	A	Hollow Handle	000000000	0000000	000000000	000000
1-64	A	Hollow Handle	000000000	000000	000000000	00000
2-56	A	Hollow Handle	000000000	000000	000000000	00000
4-40	A	Hollow Handle	000000000	000000	000000000	00000
6-32	A	Hollow Handle	000000000	000000	000000000	000000
8-32	A	Hollow Handle	000000000	000000	000000000	000000
10-24	A	Hollow Handle	000000000	000000	000000000	00000
10-32	B	Hollow Handle	000000000	000000	000000000	00000
1/4"-20	A	Hollow Handle	000000000	000000	000000000	00000
1/4"-28	B	__	000000000	000000	000000000	00000
5/16"-18	A	Hollow Handle	000000000	000000	000000000	00000
5/16"-24	B	__	000000000	000000	000000000	00000
3/8"-16	A	Hollow Handle	000000000	000000	000000000	00000
3/8"-24	B	__	000000000	000000	000000000	00000

Metric

Installation Tools
For Thread						Replacement Tips
Size	Pitch, mm	Features	Style		Each		Each
M2	0.4	Hollow Handle	A	000000000	0000000	000000000	000000
M2.5	0.45	__	B	000000000	000000	000000000	000000
M3	0.5	__	B	000000000	000000	000000000	000000
M4	0.7	__	B	000000000	000000	000000000	000000
M5	0.8	__	B	000000000	000000	000000000	000000
M6	1	__	B	000000000	000000	000000000	000000
M8	1.25	__	B	000000000	000000	000000000	00000
M10	1.5	__	B	000000000	000000	000000000	00000
M12	1.75	__	B	000000000	000000	000000000	00000

Helical Inserts with Installation Tools

Shown with Five Inserts and Drill Bit

Shown with Five Inserts

Inserts come with a through-hole tap and installation tool. Also known as Heli-Coil inserts, they have coils that expand once installed to securely anchor the insert. All have a prong for ease of installation. An installation tool grips the prong and reduces the coil diameter, enabling the insert to fit in tapped holes. Remove the prong to insert the screw.

Inch

18-8 Stainless Steel—Right-Hand Threaded
Thread Size	Installed Lg.	Drill Bit Size	For Max. Hole Dia.	No. of Inserts Included	Includes		Each
2-56	0.086"	3/32"	3/32"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	0000000
2-56	0.129"	3/32"	3/32"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
2-56	0.172"	3/32"	3/32"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
2-56	0.215"	3/32"	3/32"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
4-40	0.112"	No. 31	0.12"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
4-40	0.168"	No. 31	0.12"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
4-40	0.28"	No. 31	0.12"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
4-40	0.336"	No. 31	0.12"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
6-32	0.207"	No. 26	0.1495"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
6-32	0.345"	No. 26	0.1495"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
6-32	0.414"	No. 26	0.1495"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
8-32	0.246"	No. 17	11/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
8-32	0.41"	No. 17	11/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
8-32	0.492"	No. 17	11/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
10-24	0.19"	13/64"	13/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
10-24	0.285"	13/64"	13/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
10-24	0.475"	13/64"	13/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
10-24	0.57"	13/64"	13/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
10-32	0.285"	No. 7	13/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
10-32	0.475"	No. 7	13/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
10-32	0.57"	No. 7	13/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
12-24	0.324"	15/64"	15/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
1/4"-20	3/8"	H	17/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
1/4"-20	5/8"	H	17/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
1/4"-20	3/4"	H	17/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
1/4"-28	1/4"	G	17/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
1/4"-28	3/8"	G	17/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
1/4"-28	1/2"	G	17/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
1/4"-28	5/8"	G	17/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
5/16"-18	0.469"	Q	21/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
5/16"-18	0.781"	Q	21/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
5/16"-18	0.938"	Q	21/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
5/16"-24	0.312"	21/64"	21/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
5/16"-24	0.469"	21/64"	21/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
5/16"-24	5/8"	21/64"	21/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
3/8"-16	0.562"	X	25/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
3/8"-16	0.938"	X	25/64"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
3/8"-16	1 1/8"	X	25/64"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
3/8"-24	0.562"	25/64"	25/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
3/8"-24	3/4"	25/64"	25/64"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
7/16"-14	0.438"	29/64"	29/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
7/16"-14	0.656"	29/64"	29/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
7/16"-14	7/8"	29/64"	29/64"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
7/16"-20	0.438"	29/64"	29/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
7/16"-20	0.656"	29/64"	29/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
1/2"-13	3/4"	33/64"	17/32"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
1/2"-13	1 1/4"	33/64"	17/32"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
1/2"-13	1 1/2"	33/64"	17/32"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
1/2"-20	1/2"	33/64"	17/32"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
1/2"-20	3/4"	33/64"	33/64"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
1/2"-20	1"	33/64"	17/32"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
9/16"-12	0.844"	19/32"	19/32"	6	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
9/16"-18	0.844"	37/64"	37/64"	6	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
5/8"-11	5/8"	21/32"	21/32"	6	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
5/8"-11	0.938"	21/32"	21/32"	6	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
5/8"-11	1 1/4"	21/32"	21/32"	6	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
5/8"-18	5/8"	41/64"	21/32"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
5/8"-18	0.938"	41/64"	41/64"	6	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
3/4"-10	3/4"	25/32"	25/32"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
3/4"-10	1 1/8"	25/32"	25/32"	4	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
3/4"-10	1 1/2"	25/32"	25/32"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
3/4"-16	1 1/8"	49/64"	49/64"	4	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
7/8"-9	1.312"	29/32"	29/32"	6	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
7/8"-14	1.312"	57/64"	57/64"	6	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
1"-8	1 1/2"	1 1/32"	1 1/32"	6	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
1"-12	1 1/2"	1 1/64"	1 1/64"	6	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
1"-14	1 1/2"	1 1/64"	1 1/64"	6	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
1 1/8"-7	1.688"	1 5/32"	1 5/32"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
1 1/8"-12	1.688"	1 5/32"	1 5/32"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
1 1/4"-7	1 7/8"	1 9/32"	1 9/32"	4	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
1 1/4"-12	1 7/8"	1 9/32"	1 9/32"	4	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
1 1/2"-6	2 1/4"	1 17/32"	1 17/32"	4	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
1 1/2"-12	2 1/4"	1 17/32"	1 17/32"	4	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000000
18-8 Stainless Steel—Left-Hand Threaded
1/4"-20	3/8"	17/64"	17/64"	6	Through-Hole Tap, Installation Tool	000000000	00000
1/4"-28	3/8"	17/64"	17/64"	6	Through-Hole Tap, Installation Tool	000000000	00000
5/16"-18	0.469"	21/64"	21/64"	6	Through-Hole Tap, Installation Tool	000000000	000000
5/16"-24	0.469"	21/64"	21/64"	6	Through-Hole Tap, Installation Tool	000000000	000000
3/8"-16	0.562"	25/64"	25/64"	6	Through-Hole Tap, Installation Tool	000000000	000000
3/8"-24	0.562"	25/64"	25/64"	6	Through-Hole Tap, Installation Tool	000000000	000000
1/2"-13	3/4"	17/32"	17/32"	4	Through-Hole Tap, Installation Tool	000000000	000000
1/2"-20	3/4"	33/64"	33/64"	4	Through-Hole Tap, Installation Tool	000000000	000000
5/8"-11	0.938"	21/32"	21/32"	2	Through-Hole Tap, Installation Tool	000000000	000000
5/8"-18	0.938"	41/64"	41/64"	2	Through-Hole Tap, Installation Tool	000000000	000000
3/4"-10	1 1/8"	25/32"	25/32"	2	Through-Hole Tap, Installation Tool	000000000	000000

Metric

18-8 Stainless Steel—Right-Hand Threaded
Thread Size	Thread Pitch, mm	Thread Spacing	Installed Lg., mm	Drill Bit Size	For Max. Hole Dia.	No. of Inserts Included	Includes		Each
M2.5	0.45	Coarse	3.8	2.55 mm	0.1015"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	0000000
M3	0.5	Coarse	4.5	3.15 mm	1/8"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
M4	0.7	Coarse	6	4.2 mm	11/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M4	0.7	Coarse	10	4.2 mm	11/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M4	0.7	Coarse	12	4.2 mm	11/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M5	0.8	Coarse	7.5	5.2 mm	13/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M5	0.8	Coarse	12.5	5.2 mm	13/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M5	0.8	Coarse	15	5.2 mm	13/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M6	1	Coarse	9	6.25 mm	1/4"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M6	1	Coarse	15	6.25 mm	1/4"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M6	1	Coarse	18	6.25 mm	1/4"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M7	1	Coarse	10.5	7.25 mm	9/32"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M8	1	Fine	12	8.25 mm	21/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
M8	1.25	Coarse	12	8.3 mm	21/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M8	1.25	Coarse	20	8.3 mm	21/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M8	1.25	Coarse	24	8.3 mm	21/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M10	1	Extra Fine	15	10.25 mm	13/32"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
M10	1.25	Fine	10	10.25 mm	13/32"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
M10	1.25	Fine	15	10.25 mm	13/32"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
M10	1.5	Coarse	10	10.5 mm	13/32"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M10	1.5	Coarse	15	10.5 mm	13/32"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M10	1.5	Coarse	20	10.5 mm	13/32"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M10	1.5	Coarse	25	10.5 mm	13/32"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
M10	1.5	Coarse	30	10.5 mm	13/32"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
M12	1.25	Extra Fine	18	12.25 mm	31/64"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
M12	1.5	Fine	18	12.25 mm	31/64"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
M12	1.75	Coarse	18	31/64"	31/64"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
M14	1.5	Fine	21	14.25 mm	9/16"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
M14	2	Coarse	21	37/64"	37/64"	12	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
M16	2	Coarse	24	21/32"	21/32"	6	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
M18	2.5	Coarse	27	47/64"	47/64"	6	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
M20	2.5	Coarse	30	13/16"	13/16"	4	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
M24	3	Coarse	36	31/32"	31/32"	5	Through-Hole Tap, Installation Tool	000000000	000000
M30	3.5	Coarse	45	1 1/4"	1 1/4"	5	Through-Hole Tap, Installation Tool	000000000	000000
M36	4	Coarse	54	1 7/16"	1 7/16"	4	Through-Hole Tap, Installation Tool	000000000	000000

NPT

18-8 Stainless Steel—Right-Hand Threaded
Pipe Size	Installed Lg.	Drill Bit Size	For Max. Hole Dia.	No. of Inserts Included	Includes		Each
1/8	0.273"	3/8"	3/8"	12	Drill Bit, Through-Hole Tap, Installation Tool	000000000	0000000
1/4	0.394"	33/64"	33/64"	12	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
3/8	0.407"	21/32"	21/32"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
1/2	0.534"	13/16"	13/16"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000