DIN Standard Threaded Inserts

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System of Measurement

Thread Size

Thread Pitch

Threaded Insert Type

Installed Length

Material

Helical Insert Type

For Tap Type

For Use In

Thread Type

Thread Spacing

Drill Bit Size

Specifications Met

End Type

Thread Direction

DFARS Specialty Metals

RoHS

Tensile Strength

120,000 psi or greater

REACH

Nut Type

Hole Diameter

Passivation

Military Specification

MIL-I-8846

Export Control Classification Number (ECCN)

EAR99

Thread Fit

Metric Class 6G

Metric Class 6H

Internal Locking Type

Distorted Thread

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246 Products

About Threaded Inserts

Choose the right threaded insert for your application and learn how to install it securely.

About Nuts, Materials, and Finishes

Also known as Heli-Coil inserts, these inserts 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. Installation requires a drill bit, a helical insert tap, an installation tool, and a prong break-off tool.

Inserts that meet DIN 8140 adhere to international standards for dimensions.

Metric

Inserts										Through-Hole Taps		Closed-End Hole Taps		Installation Tools		Prong Break-Off Tools
Thread Size	Thread Pitch, mm	Thread Spacing	Installed Lg., mm	Drill Bit Size	For Max. Hole Dia.	Specifications Met	Pkg. Qty.		Pkg.		Each		Each		Each		Each
18-8 Stainless Steel—Right-Hand Threaded
M2	0.4	Coarse	2	2.1 mm	2.1mm	DIN 8140, SAE MA3279-140	10	000000000	00000	000000000	0000000	000000000	0000000	000000000	0000000	000000000	0000000
M2	0.4	Coarse	3	2.1 mm	2.1mm	DIN 8140, SAE MA3279-190	10	000000000	0000	000000000	000000	000000000	000000	000000000	000000	000000000	000000
M2	0.4	Coarse	4	2.1 mm	2.1mm	DIN 8140, SAE MA3279-240	10	000000000	0000	000000000	000000	000000000	000000	000000000	000000	000000000	000000
M2.5	0.45	Coarse	2.5	No. 37	0.104"	DIN 8140, SAE MA3279-101	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M2.5	0.45	Coarse	3.8	No. 37	0.104"	DIN 8140, SAE MA3279-151	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M2.5	0.45	Coarse	5	No. 37	0.104"	DIN 8140, SAE MA3279-201	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M2.5	0.45	Coarse	6.3	No. 37	0.104"	DIN 8140, SAE MA3279-251	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M3	0.5	Coarse	3	3.2 mm	3.2mm	DIN 8140, SAE MA3279-102	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M3	0.5	Coarse	4.5	3.2 mm	3.2mm	DIN 8140, SAE MA3279-152	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M3	0.5	Coarse	6	3.2 mm	3.2mm	DIN 8140, SAE MA3279-202	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M3	0.5	Coarse	7.5	3.2 mm	3.2mm	DIN 8140, SAE MA3279-252	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M3.5	0.6	Coarse	3.5	3.7 mm	3.7mm	DIN 8140, SAE MA3279-103	5	000000000	0000	000000000	00000	000000000	000000	000000000	000000	000000000	000000
M3.5	0.6	Coarse	5.3	3.7 mm	3.7mm	DIN 8140, SAE MA3279-153	10	000000000	0000	000000000	00000	000000000	000000	000000000	000000	000000000	000000
M3.5	0.6	Coarse	7	3.7 mm	3.7mm	DIN 8140, SAE MA3279-203	5	000000000	0000	000000000	00000	000000000	000000	000000000	000000	000000000	000000
M4	0.7	Coarse	4	No. 19	0.166"	DIN 8140, SAE MA3279-104	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M4	0.7	Coarse	6	No. 19	0.166"	DIN 8140, SAE MA3279-154	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M4	0.7	Coarse	8	No. 19	0.166"	DIN 8140, SAE MA3279-204	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M4	0.7	Coarse	10	No. 19	0.166"	DIN 8140, SAE MA3279-254	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M5	0.8	Coarse	5	5.3 mm	5.3mm	DIN 8140, SAE MA3279-105	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M5	0.8	Coarse	7.5	5.3 mm	5.3mm	DIN 8140, SAE MA3279-155	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M5	0.8	Coarse	10	5.3 mm	5.3mm	DIN 8140, SAE MA3279-205	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M5	0.8	Coarse	12.5	5.3 mm	5.3mm	DIN 8140, SAE MA3279-255	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M6	1	Coarse	6	6.3 mm	6.3mm	DIN 8140, SAE MA3279-106	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M6	1	Coarse	9	6.3 mm	6.3mm	DIN 8140, SAE MA3279-156	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M6	1	Coarse	12	6.3 mm	6.3mm	DIN 8140, SAE MA3279-206	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M6	1	Coarse	15	6.3 mm	6.3mm	DIN 8140, SAE MA3279-256	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M7	1	Coarse	7	7.3 mm	7.3mm	DIN 8140, SAE MA3279-107	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M7	1	Coarse	10.5	7.3 mm	7.3mm	DIN 8140, SAE MA3279-157	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M7	1	Coarse	14	7.3 mm	7.3mm	DIN 8140, SAE MA3279-207	10	000000000	00000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M8	1.25	Coarse	8	8.4 mm	8.4mm	DIN 8140, SAE MA3279-109	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M8	1.25	Coarse	12	8.4 mm	8.4mm	DIN 8140, SAE MA3279-159	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M8	1.25	Coarse	16	8.4 mm	8.4mm	DIN 8140, SAE MA3279-209	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M8	1.25	Coarse	20	8.4 mm	8.4mm	DIN 8140, SAE MA3279-259	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M8	1	Fine	8	8.3 mm	8.3mm	DIN 8140, SAE MA3279-108	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M8	1	Fine	12	8.3 mm	8.3mm	DIN 8140, SAE MA3279-158	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M8	1	Fine	16	8.3 mm	8.3mm	DIN 8140, SAE MA3279-208	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M10	1.5	Coarse	10	10.5 mm	10.5mm	DIN 8140, SAE MA3279-111	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M10	1.5	Coarse	15	10.5 mm	10.5mm	DIN 8140, SAE MA3279-161	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M10	1.5	Coarse	20	10.5 mm	10.5mm	DIN 8140, SAE MA3279-211	5	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M10	1.5	Coarse	25	10.5 mm	10.5mm	DIN 8140, SAE MA3279-261	5	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M10	1.25	Fine	10	13/32"	13/32"	DIN 8140, SAE MA3279-110	10	000000000	0000	000000000	00000	000000000	000000	000000000	000000	000000000	000000
M10	1.25	Fine	15	13/32"	13/32"	DIN 8140, SAE MA3279-160	10	000000000	0000	000000000	00000	000000000	000000	000000000	000000	000000000	000000
M10	1.25	Fine	20	13/32"	13/32"	DIN 8140, SAE MA3279-210	5	000000000	0000	000000000	00000	000000000	000000	000000000	000000	000000000	000000
M10	1	Extra Fine	10	13/32"	13/32"	DIN 8140, SAE MA3279-141	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M10	1	Extra Fine	15	13/32"	13/32"	DIN 8140, SAE MA3279-191	5	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M12	1.75	Coarse	12	12.5 mm	12.5mm	DIN 8140, SAE MA3279-114	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M12	1.75	Coarse	18	12.5 mm	12.5mm	DIN 8140, SAE MA3279-164	5	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M12	1.75	Coarse	24	12.5 mm	12.5mm	DIN 8140, SAE MA3279-214	5	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M12	1.75	Coarse	30	12.5 mm	12.5mm	DIN 8140, SAE MA3279-264	5	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M12	1.5	Fine	18	12.5 mm	12.5mm	DIN 8140, SAE MA3279-163	5	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M12	1.25	Extra Fine	12	31/64"	31/64"	DIN 8140, SAE MA3279-112	10	000000000	0000	000000000	00000	000000000	000000	000000000	000000	000000000	000000
M12	1.25	Extra Fine	18	31/64"	31/64"	DIN 8140, SAE MA3279-162	5	000000000	0000	000000000	00000	000000000	000000	000000000	000000	000000000	000000
M12	1.25	Extra Fine	24	31/64"	31/64"	DIN 8140, SAE MA3279-212	10	000000000	00000	000000000	00000	000000000	000000	000000000	000000	000000000	000000
M14	2	Coarse	14	14.5 mm	14.5mm	DIN 8140, SAE MA3279-116	5	000000000	00000	000000000	000000	000000000	000000	000000000	000000	000000	00
M14	2	Coarse	21	14.5 mm	14.5mm	DIN 8140, SAE MA3279-166	1	000000000	000	000000000	000000	000000000	000000	000000000	000000	000000	00
M16	2	Coarse	16	16.5 mm	16.5mm	DIN 8140, SAE MA3279-118	1	000000000	000	000000000	00000	000000000	000000	000000000	000000	000000	00
M16	2	Coarse	24	16.5 mm	16.5mm	DIN 8140, SAE MA3279-168	1	000000000	0000	000000000	00000	000000000	000000	000000000	000000	000000	00
M16	2	Coarse	32	16.5 mm	16.5mm	DIN 8140, SAE MA3279-218	1	000000000	0000	000000000	00000	000000000	000000	000000000	000000	000000	00
M18	2.5	Coarse	27	47/64"	47/64"	DIN 8140, SAE MA3279-171	1	000000000	0000	000000000	000000	000000000	000000	000000000	000000	000000	00
M20	2.5	Coarse	20	13/16"	13/16"	DIN 8140, SAE MA3279-124	1	000000000	0000	000000000	000000	000000000	000000	000000000	000000	000000	00
M20	2.5	Coarse	30	13/16"	13/16"	DIN 8140, SAE MA3279-174	1	000000000	0000	000000000	000000	000000000	000000	000000000	000000	000000	00

Lubricated Stainless Steel Helical Inserts for Dissimilar Metals

Eliminating the need for primer, these inserts are coated to resist corrosion when installed in different materials. They also prevent the screw from sticking or binding in the insert during installation. 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. Installation requires a drill bit, a helical insert tap, an installation tool, and a prong break-off tool.

Inserts that meet DIN 8140 adhere to international standards for dimensions.

Metric

Inserts									Through-Hole Taps		Closed-End Hole Taps		Installation Tools		Prong Break-Off Tools
Thread Size	Thread Pitch, mm	Installed Lg., mm	Drill Bit Size	For Max. Hole Dia.	Specifications Met	Pkg. Qty.		Pkg.		Each		Each		Each		Each
18-8 Stainless Steel
M3	0.5	4.5	3.2 mm	3.2mm	DIN 8140	1	000000000	00000	000000000	000000	000000000	000000	000000000	0000000	000000000	0000000
M3	0.5	6	3.2 mm	3.2mm	DIN 8140	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M4	0.7	8	No. 19	0.166"	DIN 8140	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M5	0.8	5	5.3 mm	5.3mm	DIN 8140	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M5	0.8	10	5.3 mm	5.3mm	DIN 8140	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M6	1	9	6.3 mm	6.3mm	DIN 8140	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M6	1	12	6.3 mm	6.3mm	DIN 8140	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M8	1.25	8	8.4 mm	8.4mm	DIN 8140	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M8	1.25	12	8.4 mm	8.4mm	DIN 8140	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M8	1.25	16	8.4 mm	8.4mm	DIN 8140	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000

Lubricated Stainless Steel Helical Inserts

A dry film keeps the screw from sticking or binding in these inserts during installation. 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. Installation requires a drill bit, a helical insert tap, an installation tool, and a prong break-off tool.

Inserts that meet DIN 8140 adhere to international standards for dimensions.

Metric

Inserts									Through-Hole Taps		Closed-End Hole Taps		Installation Tools		Prong Break-Off Tools
Thread Size	Thread Pitch, mm	Installed Lg., mm	Drill Bit Size	For Max. Hole Dia.	Specifications Met	Pkg. Qty.		Pkg.		Each		Each		Each		Each
18-8 Stainless Steel
M2.5	0.45	2.5	No. 37	0.104"	DIN 8140, MIL-I-8846, SAE MA3280-101	1	000000000	00000	000000000	000000	000000000	000000	000000000	0000000	000000000	0000000
M2.5	0.45	5	No. 37	0.104"	DIN 8140, MIL-I-8846, SAE MA3280-201	1	000000000	000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M3	0.5	3	3.2 mm	3.2mm	DIN 8140, MIL-I-8846, SAE MA3280-102	1	000000000	000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M3	0.5	4.5	3.2 mm	3.2mm	DIN 8140, MIL-I-8846, SAE MA3280-152	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M3	0.5	6	3.2 mm	3.2mm	DIN 8140, MIL-I-8846, SAE MA3280-202	1	000000000	000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M4	0.7	4	No. 19	0.166"	DIN 8140, MIL-I-8846, SAE MA3280-104	1	000000000	000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M4	0.7	6	No. 19	0.166"	DIN 8140, MIL-I-8846, SAE MA3280-154	1	000000000	000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M4	0.7	8	No. 19	0.166"	DIN 8140, MIL-I-8846, SAE MA3280-204	1	000000000	000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M5	0.8	5	5.3 mm	5.3mm	DIN 8140, MIL-I-8846, SAE MA3280-105	1	000000000	000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M5	0.8	7.5	5.3 mm	5.3mm	DIN 8140, MIL-I-8846, SAE MA3280-155	1	000000000	000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M6	1	6	6.3 mm	6.3mm	DIN 8140, MIL-I-8846, SAE MA3280-106	1	000000000	000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M6	1	9	6.3 mm	6.3mm	DIN 8140, MIL-I-8846, SAE MA3280-156	1	000000000	000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M6	1	12	6.3 mm	6.3mm	DIN 8140, MIL-I-8846, SAE MA3280-206	1	000000000	000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M8	1.25	12	8.4 mm	8.4mm	DIN 8140, MIL-I-8846, SAE MA3280-159	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M8	1.25	16	8.4 mm	8.4mm	DIN 8140, MIL-I-8846, SAE MA3280-209	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000

Stainless Steel Screw-Locking Helical Inserts

A distorted thread grips the screw to resist loosening. Also known as Heli-Coil inserts, these inserts 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. Installation requires a drill bit, a helical insert tap, an installation tool, and a prong break-off tool.

Inserts that meet DIN 8140 adhere to international standards for dimensions.

Metric

Inserts										Through-Hole Taps		Closed-End Hole Taps		Installation Tools		Prong Break-Off Tools
Thread Size	Thread Pitch, mm	Thread Spacing	Installed Lg., mm	Drill Bit Size	For Max. Hole Dia.	Specifications Met	Pkg. Qty.		Pkg.		Each		Each		Each		Each
18-8 Stainless Steel
M2.5	0.45	Coarse	2.5	No. 37	0.104"	DIN 8140, SAE MA3329-101	10	000000000	00000	000000000	000000	000000000	000000	000000000	0000000	000000000	0000000
M2.5	0.45	Coarse	3.8	No. 37	0.104"	DIN 8140, SAE MA3329-151	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M3	0.5	Coarse	3	3.2 mm	3.2mm	DIN 8140, SAE MA3329-102	10	000000000	00000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M3	0.5	Coarse	4.5	3.2 mm	3.2mm	DIN 8140, SAE MA3329-152	10	000000000	00000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M3	0.5	Coarse	6	3.2 mm	3.2mm	DIN 8140, SAE MA3329-202	10	000000000	00000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M3	0.5	Coarse	7.5	3.2 mm	3.2mm	DIN 8140, SAE MA3329-252	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M3.5	0.6	Coarse	5.3	3.7 mm	3.7mm	DIN 8140, SAE MA3329-153	1	000000000	000	000000000	00000	000000000	000000	000000000	000000	000000000	000000
M4	0.7	Coarse	4	No. 19	0.166"	DIN 8140, SAE MA3329-104	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M4	0.7	Coarse	6	No. 19	0.166"	DIN 8140, SAE MA3329-154	10	000000000	00000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M4	0.7	Coarse	8	No. 19	0.166"	DIN 8140, SAE MA3329-204	10	000000000	00000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M5	0.8	Coarse	5	5.3 mm	5.3mm	DIN 8140, SAE MA3329-105	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M5	0.8	Coarse	7.5	5.3 mm	5.3mm	DIN 8140, SAE MA3329-155	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M5	0.8	Coarse	10	5.3 mm	5.3mm	DIN 8140, SAE MA3329-205	10	000000000	00000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M5	0.8	Coarse	12.5	5.3 mm	5.3mm	DIN 8140, SAE MA3329-255	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M6	1	Coarse	6	6.3 mm	6.3mm	DIN 8140, SAE MA3329-106	10	000000000	00000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M6	1	Coarse	9	6.3 mm	6.3mm	DIN 8140, SAE MA3329-156	10	000000000	00000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M6	1	Coarse	12	6.3 mm	6.3mm	DIN 8140, SAE MA3329-206	10	000000000	00000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M7	1	Coarse	14	7.3 mm	7.3mm	DIN 8140, SAE MA3329-207	5	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M8	1.25	Coarse	8	8.4 mm	8.4mm	DIN 8140, SAE MA3329-109	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M8	1.25	Coarse	12	8.4 mm	8.4mm	DIN 8140, SAE MA3329-159	10	000000000	00000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M8	1.25	Coarse	16	8.4 mm	8.4mm	DIN 8140, SAE MA3329-209	5	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M8	1	Fine	8	8.3 mm	8.3mm	DIN 8140, SAE MA3329-108	5	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M8	1	Fine	12	8.3 mm	8.3mm	DIN 8140, SAE MA3329-158	5	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M10	1.5	Coarse	10	10.5 mm	10.5mm	DIN 8140, SAE MA3329-111	10	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M10	1.5	Coarse	15	10.5 mm	10.5mm	DIN 8140, SAE MA3329-161	5	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M10	1.5	Coarse	25	10.5 mm	10.5mm	DIN 8140, SAE MA3329-261	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M10	1.25	Fine	15	13/32"	13/32"	DIN 8140, SAE MA3329-160	5	000000000	0000	000000000	00000	000000000	000000	000000000	000000	000000000	000000
M10	1	Extra Fine	15	13/32"	13/32"	DIN 8140, SAE MA3329-191	5	000000000	00000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M12	1.75	Coarse	12	12.5 mm	12.5mm	DIN 8140, SAE MA3329-114	5	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M12	1.75	Coarse	18	12.5 mm	12.5mm	DIN 8140, SAE MA3329-164	5	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M12	1.75	Coarse	24	12.5 mm	12.5mm	DIN 8140, SAE MA3329-214	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M12	1.75	Coarse	30	12.5 mm	12.5mm	DIN 8140, SAE MA3329-264	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M12	1.5	Fine	18	12.5 mm	12.5mm	DIN 8140, SAE MA3329-162	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M12	1.25	Extra Fine	18	31/64"	31/64"	DIN 8140, SAE MA3329-163	1	000000000	0000	000000000	00000	000000000	000000	000000000	000000	000000000	000000
M14	2	Coarse	21	14.5 mm	14.5mm	DIN 8140, SAE MA3329-166	1	000000000	0000	000000000	000000	000000000	000000	000000000	000000	000000	00
M14	1.5	Fine	21	37/64"	37/64"	DIN 8140, SAE MA3329-165	1	000000000	0000	000000000	00000	000000000	000000	000000000	000000	000000	00
M16	2	Coarse	16	16.5 mm	16.5mm	DIN 8140, SAE MA3329-118	1	000000000	00000	000000000	00000	000000000	000000	000000000	000000	000000	00
M16	2	Coarse	24	16.5 mm	16.5mm	DIN 8140, SAE MA3329-168	1	000000000	0000	000000000	00000	000000000	000000	000000000	000000	000000	00
M24	3	Coarse	36	31/32"	31/32"	DIN 8140, SAE MA3329-179	1	000000000	0000	000000000	000000	000000000	000000	000000000	00000	000000	00
M30	3.5	Coarse	45	1 7/32"	1 7/32"	DIN 8140	1	000000000	00000	000000000	000000	000000000	000000	000000000	00000	000000	00

Lubricated Stainless Steel Screw-Locking Helical Inserts

A dry film keeps the screw from sticking or binding in these inserts during installation, yet a distorted thread grips the screw to resist loosening. 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. Installation requires a drill bit, a helical insert tap, an installation tool, and a prong break-off tool.

Inserts that meet DIN 8140 adhere to international standards for dimensions.

Metric

Inserts									Through-Hole Taps		Closed-End Hole Taps		Installation Tools		Prong Break-Off Tools
Thread Size	Thread Pitch, mm	Installed Lg., mm	Drill Bit Size	For Max. Hole Dia.	Specifications Met	Pkg. Qty.		Pkg.		Each		Each		Each		Each
18-8 Stainless Steel
M2.5	0.45	3.8	No. 37	0.104"	DIN 8140, SAE MA3330-151	1	000000000	00000	000000000	000000	000000000	000000	000000000	0000000	000000000	0000000
M4	0.7	4	No. 19	0.166"	DIN 8140, SAE MA3330-104	1	000000000	000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M4	0.7	6	No. 19	0.166"	DIN 8140, SAE MA3330-154	5	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M4	0.7	8	No. 19	0.166"	DIN 8140, SAE MA3330-204	5	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M5	0.8	7.5	5.3 mm	5.3mm	DIN 8140, SAE MA3330-155	1	000000000	000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M5	0.8	10	5.3 mm	5.3mm	DIN 8140, SAE MA3330-205	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M6	1	9	6.3 mm	6.3mm	DIN 8140, SAE MA3330-156	5	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M6	1	12	6.3 mm	6.3mm	DIN 8140, SAE MA3330-206	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	00000
M8	1.25	8	8.4 mm	8.4mm	DIN 8140, SAE MA3330-109	1	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000
M8	1.25	12	8.4 mm	8.4mm	DIN 8140, SAE MA3330-159	5	000000000	0000	000000000	00000	000000000	00000	000000000	000000	000000000	000000

Screw-Locking Helical Inserts without Prong

A distorted thread grips the screw to resist loosening. Without a prong to break off and retrieve, these inserts are often used where debris could cause damage. Also known as Heli-Coil inserts, they have coils that expand once installed to securely anchor the insert. Installation requires a drill bit, a helical insert tap, and an installation tool.

Inserts that meet DIN 8140 adhere to international standards for dimensions.

Metric

Inserts									Through-Hole Taps		Closed-End Hole Taps		Installation Tools
Thread Size	Thread Pitch, mm	Installed Lg., mm	Drill Bit Size	For Max. Hole Dia.	Specifications Met	Pkg. Qty.		Pkg.		Each		Each		Each
18-8 Stainless Steel
M3	0.5	6	3.2 mm	3.2mm	DIN 8140, NA0276M3-L20	10	000000000	00000	000000000	000000	000000000	000000	000000000	0000000

Metric Steel Hex Weld Nuts

The three weld points on these metric hex nuts create a secure hold on a steel surface. Weld them to sheet metal or thick steel surfaces to add strong, permanent threads. They stand up to high torque and pull force better than rivet nuts. Made of uncoated steel, there’s minimal prep required to weld them to uncoated steel surfaces. All have a collar pilot that guides the nut into the hole, holds it in place while welding, and protects the threads from weld spatter.

Thread				Collar
Size	Pitch, mm	Wd., mm	Ht., mm	Dia., mm	Ht., mm	For Hole Dia., mm	Specifications Met	Pkg. Qty.		Pkg.
Steel
M3	0.5	7.5	2.45	4.5	0.55	4.5	DIN 929	100	000000000	000000
M4	0.7	9	2.85	6	0.65	6	DIN 929	100	000000000	00000
M5	0.8	10	3.3	7	0.7	7	DIN 929	100	000000000	00000
M6	1	11	4.25	8	0.75	8	DIN 929	50	000000000	0000
M8	1.25	14	5.6	10.5	0.9	10.5	DIN 929	50	000000000	00000
M10	1.25	17	6.85	12.5	1.15	12.5	DIN 929	25	000000000	00000
M10	1.5	17	6.85	12.5	1.15	12.5	DIN 929	25	000000000	00000
M12	1.75	19	8.6	14.8	1.4	14.8	DIN 929	25	000000000	00000
M14	2	22	9.2	16.8	1.8	16.8	DIN 929	10	000000000	0000
M16	2	24	11.2	18.8	1.8	18.8	DIN 929	10	000000000	00000

Titanium Hex Weld Nuts

When you need a high strength-to-weight ratio and extreme corrosion resistance, choose these titanium weld nuts. They’re 40% lighter than steel and stand up to salt water, acids, and chemicals. Weld them onto titanium surfaces to add strong, permanent threads. Projections on the base concentrate your weld and create room for heat to dissipate, protecting the threads from deforming. The threads are also protected from weld spatter thanks to the collar pilot, which guides the nut into the hole and holds it in place.

Nuts that meet DIN 929 comply with dimensional standards for hex-shaped weld nuts.

Metric

Thread				Collar
Size	Pitch, mm	Wd., mm	Ht., mm	Dia., mm	Ht., mm	For Hole Dia., mm	No. of Projections	Specifications Met		Each
Grade 2 Titanium
M6	1	11	4.3	8	0.75	8	3	DIN 929	000000000	000000
M8	1.25	14	5.6	10.5	0.9	10.5	3	DIN 929	000000000	00000
M10	1.5	17	6.9	12.5	1.15	12.5	3	DIN 929	000000000	00000

Metric Stainless Steel Hex Weld Nuts

You can weld these nuts to flat and uneven uncoated stainless steel surfaces for a strong permanent hold. They have a collar pilot that assists alignment and prevents welding spatter from getting into threads.

Thread				Collar
Size	Pitch, mm	Wd., mm	Ht., mm	Dia., mm	Ht., mm	For Hole Dia., mm	Specifications Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel
M3	0.5	7.5	2.5	4.5	0.55	4.5	DIN 929	100	000000000	000000
M4	0.7	9	2.9	6	0.65	6	DIN 929	50	000000000	0000
M5	0.8	10	3.3	7	0.7	7	DIN 929	50	000000000	00000
M6	1	11	4.3	8	0.75	8	DIN 929	25	000000000	0000
M8	1.25	14	5.6	10.5	0.9	10.5	DIN 929	25	000000000	00000
M10	1.5	17	6.9	12.5	1.15	12.5	DIN 929	10	000000000	0000
M12	1.75	19	8.6	14.8	1.4	14.8	DIN 929	10	000000000	00000
M16	2	24	11.2	18.8	1.8	18.8	DIN 929	1	000000000	00000

Square Weld Nuts

Square weld nuts have more weld points than hex nuts for a stronger hold. Use them to add strong, permanent threads to uncoated steel surfaces. They stand up to more torque and pulling force than rivet nuts. These fasteners are uncoated, so they require minimal preparation before welding. All have a collar pilot that guides the nut into the hole, holds it in place while welding, and protects the threads from weld spatter.

Metric

Thread
Size	Pitch, mm	Wd., mm	Ht., mm	For Hole Dia., mm	Specifications Met	Pkg. Qty.		Pkg.
Steel
M4	0.7	7	3.5	4.3	DIN 928	50	000000000	000000
M5	0.8	9	4.2	5.3	DIN 928	100	000000000	00000
M6	1	10	5	6.4	DIN 928	100	000000000	00000
M8	1.25	14	6.5	8.4	DIN 928	100	000000000	00000
M10	1.5	17	8	10.5	DIN 928	25	000000000	0000
M12	1.75	19	9.5	13	DIN 928	25	000000000	00000
M14	2	22	11	16.8	DIN 928	5	000000000	0000
M16	2	24	13	18.8	DIN 928	5	000000000	00000