Helical Insert Prewinder

	System of Measurement System of Measurement

Inch

Metric

Pipe

	Thread Size Thread Size

	Thread Type Thread Type

	Thread Pitch Thread Pitch

	For System of Measurement For System of Measurement

Inch

Metric

Pipe

	For Helical Insert Style For Helical Insert Style

With Prong

Without Prong

	For Thread Direction For Thread Direction

Right Hand

Left Hand

	For Thread Type For Thread Type

	Thread Direction Thread Direction


Right Hand	Left Hand

	Installed Length Installed Length

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Number of Inserts Included Number of Inserts Included

	For Thread Pitch For Thread Pitch

	For Minimum Material Thickness For Minimum Material Thickness

	Drill Bit Size Drill Bit Size

	Thread Spacing Thread Spacing

Coarse

Fine

Extra Fine

	For Maximum Hole Diameter For Maximum Hole Diameter

	Pipe Size Pipe Size

	For Pipe Size For Pipe Size

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203 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 B cannot be used with screw-lock inserts.

For technical drawings and 3-D models, click on a part number.

Inch

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

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

Metric

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

Pipe Thread

For Right-Hand Thread
For Pipe Size	For Thread Type	Style		Each
1/8	NPT	A	000000000	0000000
1/8	BSPP	F	000000000	00000
1/4	NPT	A	000000000	000000
1/4	BSPP	G	000000000	00000
3/8	NPT	D	000000000	000000
3/8	BSPP	G	000000000	00000
1/2	NPT	D	000000000	000000
1/2	BSPP	G	000000000	00000

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 for metric size inserts have a hollow handle for tip storage.

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		Each		Each
2-56	000000000	0000000	000000000	000000
4-40	000000000	000000	000000000	00000
6-32	000000000	000000	000000000	00000
8-32	000000000	000000	000000000	00000
10-24	000000000	000000	000000000	00000
10-32	000000000	000000	000000000	00000
1/4"-20	000000000	000000	000000000	00000

Metric

Installation Tools
For Thread				Replacement Tips
Size	Pitch, mm		Each		Each
M2.5	0.45	000000000	0000000	000000000	000000
M3	0.5	000000000	000000	000000000	00000
M4	0.7	000000000	000000	000000000	00000
M5	0.8	000000000	000000	000000000	00000
M6	1	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	0.129"	3/32"	3/32"	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
6-32	0.207"	No. 25	0.1495"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
8-32	0.246"	11/64"	11/64"	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
10-32	0.285"	13/64"	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"	17/64"	17/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
1/4"-28	3/8"	17/64"	17/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
5/16"-18	0.469"	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
3/8"-16	0.562"	25/64"	25/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
3/8"-24	0.562"	25/64"	25/64"	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"-20	0.656"	29/64"	29/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
1/2"-13	3/4"	17/32"	17/32"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
1/2"-20	3/4"	33/64"	33/64"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
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	0.938"	21/32"	21/32"	6	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	1 1/8"	25/32"	25/32"	4	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	000000
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	00000
5/16"-24	0.469"	21/64"	21/64"	6	Through-Hole Tap, Installation Tool	000000000	00000
3/8"-16	0.562"	25/64"	25/64"	6	Through-Hole Tap, Installation Tool	000000000	00000
3/8"-24	0.562"	25/64"	25/64"	6	Through-Hole Tap, Installation Tool	000000000	00000
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	No. 38	0.1015"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	0000000
M3	0.5	Coarse	4.5	1/8"	1/8"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M4	0.7	Coarse	6	11/64"	11/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M5	0.8	Coarse	7.5	13/64"	13/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M6	1	Coarse	9	1/4"	1/4"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M7	1	Coarse	10.5	9/32"	9/32"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M8	1.25	Coarse	12	21/64"	21/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M8	1	Fine	12	21/64"	21/64"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M10	1.5	Coarse	15	13/32"	13/32"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M10	1.25	Fine	15	13/32"	13/32"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M10	1	Extra Fine	15	13/32"	13/32"	10	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M12	1.75	Coarse	18	31/64"	31/64"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M12	1.5	Fine	18	31/64"	31/64"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M12	1.25	Extra Fine	18	31/64"	31/64"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
M14	2	Coarse	21	37/64"	37/64"	12	Drill Bit, Through-Hole Tap, Installation Tool	000000000	000000
M14	1.5	Fine	21	9/16"	9/16"	5	Drill Bit, Through-Hole Tap, Installation Tool	000000000	00000
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

Pipe Thread

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