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

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Specifications Met

Drill Bit Size

Thread Spacing

For Material Thickness

End Type

Thread Direction

DFARS Specialty Metals

RoHS

Tensile Strength

120,000 psi or greater

REACH

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Hole Diameter

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Military Specification

MIL-I-8846

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EAR99

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About Threaded Inserts

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

Helical Threaded Inserts

Pronged

Restore, reinforce, or create threads in metal. The tough coils on these inserts expand once installed to anchor in a tapped hole. Also known as Heli-Coil inserts, they're often used in engine heads and machinery housings where strong connections are critical. Unlike threadlocking inserts, you can remove and reuse them without them losing their strength.

Installation requires a drill bit, a helical insert tap, and an installation tool.

Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.

18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.

	Inserts								Through-Hole Taps		Closed-End Hole Taps		Installation Tools		Prong Break-Off Tools		Inserts with Installation Tools
	Thread Size	Installed Lg., mm	Drill Bit Size	For Max. Hole Dia.	Specs. Met	Pkg. Qty.		Pkg.		Each		Each		Each		Each	No. of Inserts Included		Each
Pronged







				18-8 Stainless Steel

				M2 x 0.4 mm	2	2.1 mm	2.1 mm	DIN 8140, SAE MA3279-140	10	91732A181	00000	91709A240	0000000	91709A230	0000000	90261A185	0000000	92955A206	0000000	—	———	0


				M2 x 0.4 mm	3	2.1 mm	2.1 mm	DIN 8140, SAE MA3279-190	10	91732A182	0000	91709A240	000000	91709A230	000000	90261A185	000000	92955A206	000000	—	———	0
				M2 x 0.4 mm	4	2.1 mm	2.1 mm	DIN 8140, SAE MA3279-240	10	91732A183	0000	91709A240	000000	91709A230	000000	90261A185	000000	92955A206	000000	—	———	0
				M2.5 x 0.45 mm	2.5	37 Ga.	0.104"	DIN 8140, SAE MA3279-101	10	91732A764	0000	91709A678	00000	91709A578	00000	90261A187	000000	92955A204	000000	—	———	0
				M2.5 x 0.45 mm	3.8	37 Ga.	0.104"	DIN 8140, SAE MA3279-151	10	91732A767	0000	91709A678	00000	91709A578	00000	90261A187	000000	92955A204	000000	10	91732A873	0000000
				M2.5 x 0.45 mm	5	37 Ga.	0.104"	DIN 8140, SAE MA3279-201	10	91732A770	0000	91709A678	00000	91709A578	00000	90261A187	000000	92955A204	000000	—	———	0
				M2.5 x 0.45 mm	6.3	37 Ga.	0.104"	DIN 8140, SAE MA3279-251	10	91732A771	0000	91709A678	00000	91709A578	00000	90261A187	000000	92955A204	000000	—	———	0
				M3 x 0.5 mm	3	3.2 mm	3.2 mm	DIN 8140, SAE MA3279-102	10	91732A645	0000	91709A355	00000	91709A524	00000	90261A188	000000	92955A155	000000	10	91732A401	000000
				M3 x 0.5 mm	4.5	3.2 mm	3.2 mm	DIN 8140, SAE MA3279-152	10	91732A647	0000	91709A355	00000	91709A524	00000	90261A188	000000	92955A155	000000	10	91732A942	000000
				M3 x 0.5 mm	6	3.2 mm	3.2 mm	DIN 8140, SAE MA3279-202	10	91732A773	0000	91709A355	00000	91709A524	00000	90261A188	000000	92955A155	000000	10	91732A411	000000
				M3 x 0.5 mm	7.5	3.2 mm	3.2 mm	DIN 8140, SAE MA3279-252	10	91732A780	0000	91709A355	00000	91709A524	00000	90261A188	000000	92955A155	000000	—	———	0


				M3.5 x 0.6 mm	3.5	3.7 mm	3.7 mm	DIN 8140, SAE MA3279-103	5	91732A774	0000	91709A195	00000	91709A220	000000	90261A189	000000	92955A155	000000	—	———	0
				M3.5 x 0.6 mm	5.3	3.7 mm	3.7 mm	DIN 8140, SAE MA3279-153	10	91732A775	0000	91709A195	00000	91709A220	000000	90261A189	000000	92955A155	000000	—	———	0
				M3.5 x 0.6 mm	7	3.7 mm	3.7 mm	DIN 8140, SAE MA3279-203	5	91732A778	0000	91709A195	00000	91709A220	000000	90261A189	000000	92955A155	000000	—	———	0
				M4 x 0.7 mm	4	19 Ga.	0.166"	DIN 8140, SAE MA3279-104	10	91732A649	0000	91709A359	00000	91709A527	00000	90261A190	000000	92955A160	000000	10	91732A421	00000
				M4 x 0.7 mm	6	19 Ga.	0.166"	DIN 8140, SAE MA3279-154	10	91732A656	0000	91709A359	00000	91709A527	00000	90261A190	000000	92955A160	000000	10	91732A944	00000
				M4 x 0.7 mm	8	19 Ga.	0.166"	DIN 8140, SAE MA3279-204	10	91732A776	0000	91709A359	00000	91709A527	00000	90261A190	000000	92955A160	000000	10	91732A431	00000
				M4 x 0.7 mm	10	19 Ga.	0.166"	DIN 8140, SAE MA3279-254	10	91732A781	0000	91709A359	00000	91709A527	00000	90261A190	000000	92955A160	000000	10	98356A154	00000
				M5 x 0.8 mm	5	5.3 mm	5.3 mm	DIN 8140, SAE MA3279-105	10	91732A631	0000	91709A201	00000	91709A530	00000	90261A191	000000	92955A129	00000	10	91732A441	00000
				M5 x 0.8 mm	7.5	5.3 mm	5.3 mm	DIN 8140, SAE MA3279-155	10	91732A261	0000	91709A201	00000	91709A530	00000	90261A191	000000	92955A129	00000	10	91732A946	00000
				M5 x 0.8 mm	10	5.3 mm	5.3 mm	DIN 8140, SAE MA3279-205	10	91732A779	0000	91709A201	00000	91709A530	00000	90261A191	000000	92955A129	00000	10	91732A451	00000


				M5 x 0.8 mm	12.5	5.3 mm	5.3 mm	DIN 8140, SAE MA3279-255	10	91732A784	0000	91709A201	00000	91709A530	00000	90261A191	000000	92955A129	00000	10	98356A156	00000
				M6 x 1 mm	6	6.3 mm	6.3 mm	DIN 8140, SAE MA3279-106	10	91732A635	0000	91709A202	00000	91709A533	00000	90261A192	000000	92955A131	00000	10	91732A461	00000
				M6 x 1 mm	9	6.3 mm	6.3 mm	DIN 8140, SAE MA3279-156	10	91732A262	0000	91709A202	00000	91709A533	00000	90261A192	000000	92955A131	00000	10	91732A948	00000
				M6 x 1 mm	12	6.3 mm	6.3 mm	DIN 8140, SAE MA3279-206	10	91732A782	0000	91709A202	00000	91709A533	00000	90261A192	000000	92955A131	00000	10	91732A471	00000
				M6 x 1 mm	15	6.3 mm	6.3 mm	DIN 8140, SAE MA3279-256	10	91732A786	0000	91709A202	00000	91709A533	00000	90261A192	000000	92955A131	00000	10	98356A158	00000
				M7 x 1 mm	7	7.3 mm	7.3 mm	DIN 8140, SAE MA3279-107	10	91732A639	0000	91709A203	00000	91709A536	00000	90261A193	000000	92955A205	000000	—	———	0
				M7 x 1 mm	10.5	7.3 mm	7.3 mm	DIN 8140, SAE MA3279-157	10	91732A263	0000	91709A203	00000	91709A536	00000	90261A193	000000	92955A205	000000	10	91732A950	00000
				M7 x 1 mm	14	7.3 mm	7.3 mm	DIN 8140, SAE MA3279-207	10	91732A785	00000	91709A203	00000	91709A536	00000	90261A193	000000	92955A205	000000	—	———	0
				M8 x 1 mm	8	8.3 mm	8.3 mm	DIN 8140, SAE MA3279-108	10	91732A791	0000	91709A650	00000	91709A539	00000	90261A300	000000	92955A133	000000	—	———	0
				M8 x 1 mm	12	8.3 mm	8.3 mm	DIN 8140, SAE MA3279-158	10	91732A794	0000	91709A650	00000	91709A539	00000	90261A300	000000	92955A133	000000	10	91732A820	00000


				M8 x 1 mm	16	8.3 mm	8.3 mm	DIN 8140, SAE MA3279-208	10	91732A797	0000	91709A650	00000	91709A539	00000	90261A300	000000	92955A133	000000	—	———	0
				M8 x 1.25 mm	8	8.4 mm	8.4 mm	DIN 8140, SAE MA3279-109	10	91732A644	0000	91709A204	00000	91709A542	00000	90261A194	000000	92955A133	000000	10	91732A481	000000
				M8 x 1.25 mm	12	8.4 mm	8.4 mm	DIN 8140, SAE MA3279-159	10	91732A264	0000	91709A204	00000	91709A542	00000	90261A194	000000	92955A133	000000	10	91732A952	00000
				M8 x 1.25 mm	16	8.4 mm	8.4 mm	DIN 8140, SAE MA3279-209	10	91732A788	0000	91709A204	00000	91709A542	00000	90261A194	000000	92955A133	000000	10	91732A491	000000
				M8 x 1.25 mm	20	8.4 mm	8.4 mm	DIN 8140, SAE MA3279-259	10	91732A787	0000	91709A204	00000	91709A542	00000	90261A194	000000	92955A133	000000	10	98356A161	00000
				M10 x 1 mm	10	13/32"	0.406"	DIN 8140, SAE MA3279-141	10	91732A818	0000	91709A672	00000	91709A575	00000	90261A303	000000	92955A135	000000	—	———	0
				M10 x 1 mm	15	13/32"	0.406"	DIN 8140, SAE MA3279-191	5	91732A821	0000	91709A672	00000	91709A575	00000	90261A303	000000	92955A135	000000	10	91732A962	000000
				M10 x 1.25 mm	10	13/32"	0.406"	DIN 8140, SAE MA3279-110	10	91732A803	0000	91709A653	00000	91709A545	000000	90261A197	000000	92955A135	000000	10	98356A167	000000
				M10 x 1.25 mm	15	13/32"	0.406"	DIN 8140, SAE MA3279-160	10	91732A806	0000	91709A653	00000	91709A545	000000	90261A197	000000	92955A135	000000	10	91732A822	00000
				M10 x 1.25 mm	20	13/32"	0.406"	DIN 8140, SAE MA3279-210	5	91732A809	0000	91709A653	00000	91709A545	000000	90261A197	000000	92955A135	000000	—	———	0


				M10 x 1.5 mm	10	10.5 mm	10.5 mm	DIN 8140, SAE MA3279-111	10	91732A648	0000	91709A205	00000	91709A548	00000	90261A195	000000	92955A135	000000	10	98356A163	00000
				M10 x 1.5 mm	15	10.5 mm	10.5 mm	DIN 8140, SAE MA3279-161	10	91732A265	0000	91709A205	00000	91709A548	00000	90261A195	000000	92955A135	000000	10	91732A956	00000
				M10 x 1.5 mm	20	10.5 mm	10.5 mm	DIN 8140, SAE MA3279-211	5	91732A800	0000	91709A205	00000	91709A548	00000	90261A195	000000	92955A135	000000	5	98356A164	00000
				M10 x 1.5 mm	25	10.5 mm	10.5 mm	DIN 8140, SAE MA3279-261	5	91732A801	0000	91709A205	00000	91709A548	00000	90261A195	000000	92955A135	000000	5	98356A165	000000
M12 x 1.25 mm				12	31/64"	0.484"	DIN 8140, SAE MA3279-112	10	91732A827	0000	91709A675	00000	91709A551	000000	90261A306	000000	92955A137	000000	—	———	0
M12 x 1.25 mm	18			31/64"	0.484"	DIN 8140, SAE MA3279-162	5	91732A830	0000	91709A675	00000	91709A551	000000	90261A306	000000	92955A137	000000	5	91732A964	00000
M12 x 1.25 mm	24			31/64"	0.484"	DIN 8140, SAE MA3279-212	10	91732A833	00000	91709A675	00000	91709A551	000000	90261A306	000000	92955A137	000000	—	———	0
M12 x 1.5 mm	18			12.5 mm	12.5 mm	DIN 8140, SAE MA3279-163	5	91732A301	0000	91709A656	00000	91709A554	00000	90261A184	000000	92955A137	000000	5	91732A824	00000
M12 x 1.75 mm	12			12.5 mm	12.5 mm	DIN 8140, SAE MA3279-114	10	91732A653	0000	91709A206	00000	91709A557	00000	90261A196	000000	92955A137	000000	—	———	0
M12 x 1.75 mm	18	12.5 mm		12.5 mm	DIN 8140, SAE MA3279-164	5	91732A266	0000	91709A206	00000	91709A557	00000	90261A196	000000	92955A137	000000	5	91732A967	00000
M12 x 1.75 mm	24	12.5 mm	12.5 mm	DIN 8140, SAE MA3279-214	5	91732A812	0000	91709A206	00000	91709A557	00000	90261A196	000000	92955A137	000000	—	———	0
M12 x 1.75 mm	30	12.5 mm	12.5 mm	DIN 8140, SAE MA3279-264	5	91732A813	0000	91709A206	00000	91709A557	00000	90261A196	000000	92955A137	000000	—	———	0
M14 x 2 mm	14	14.5 mm	14.5 mm	DIN 8140, SAE MA3279-116	5	91732A658	00000	91709A368	000000	91709A563	000000	90261A198	000000	———	0	—	———	0
M14 x 2 mm	21	14.5 mm	14.5 mm	DIN 8140, SAE MA3279-166	1	91732A671	0000	91709A368	000000	91709A563	000000	90261A198	000000	———	0	12	91732A068	000000
M16 x 2 mm	16	16.5 mm	16.5 mm	DIN 8140, SAE MA3279-118	1	91732A673	0000	91709A371	00000	91709A566	000000	90261A208	000000	———	0	—	———	0
M16 x 2 mm	24	16.5 mm	16.5 mm	DIN 8140, SAE MA3279-168	1	91732A675	0000	91709A371	00000	91709A566	000000	90261A208	000000	———	0	6	91732A071	000000
M16 x 2 mm	32	16.5 mm	16.5 mm	DIN 8140, SAE MA3279-218	1	91732A676	0000	91709A371	00000	91709A566	000000	90261A208	000000	———	0	—	———	0
M18 x 2.5 mm	27	47/64"	0.734"	DIN 8140, SAE MA3279-171	1	91732A679	0000	91709A373	000000	91709A569	000000	90261A312	000000	———	0	6	91732A073	000000
M20 x 2.5 mm	20	13/16"	0.813"	DIN 8140, SAE MA3279-124	1	91732A681	0000	91709A375	000000	91709A572	000000	90261A212	000000	———	0	—	———	0
M20 x 2.5 mm	30	13/16"	0.813"	DIN 8140, SAE MA3279-174	1	91732A683	0000	91709A375	000000	91709A572	000000	90261A212	000000	———	0	4	91732A075	000000

Extraction Tools

Remove installed helical inserts.

For Pronged Helical Inserts—Place the tip into pronged inserts and lightly strike the tool’s head. Then, turn the tool counterclockwise with pressure to extract the insert.

		Each
For Pronged Helical Inserts



	1-64, 1-72, M2	90254A370	0000000


	3-48, 3-56, 4-40, 4-48, 5-40, 5-44, 6-32, 6-40, 8-32, 8-36, 8-40, M2.5, M3, M3.5, M4	90254A310	00000
	10-24, 10-32, 12-24, 12-28, 1/4"-20, 1/4"-28, 1/4"-32, 1/4"-80, 5/16"-18, 5/16"-24, 5/16"-32, 3/8"-16, 3/8"-24, M5, M6, M7, M8, M10	90254A320	00000
	7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, 1/2"-28, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, 5/8"-24, 3/4"-10, 3/4"-16, 3/4"-20, 7/8"-9, 7/8"-14, 7/8"-20, 1"-8, 1"-12, 1"-14, M12, M14, M16, M18, M20, M22, M24	90254A330	00000

Screw-Locking Helical Threaded Inserts


Pronged	Prongless

The irregularly shaped threads tightly grip screws to prevent them from loosening or backing out under vibration. Use these inserts to create or repair threads in pumps and other machinery that shakes and rattles. Also known as Heli-Coil inserts.

Installation requires a drill bit, a helical insert tap, and an installation tool.

Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.

Prongless—Without a prong to break off and retrieve, these inserts save time and avoid leftover debris in holes.

18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.

	Inserts								Through-Hole Taps		Closed-End Hole Taps		Installation Tools		Prong Break-Off Tools
	Thread Size	Installed Lg., mm	Drill Bit Size	For Max. Hole Dia.	Specs. Met	Pkg. Qty.		Pkg.		Each		Each		Each		Each
Pronged







				18-8 Stainless Steel

				M2.5 x 0.45 mm	2.5	37 Ga.	0.104"	DIN 8140, SAE MA3329-101	10	90296A401	00000	91709A678	000000	91709A578	000000	90261A187	0000000	92955A204	0000000


				M2.5 x 0.45 mm	3.8	37 Ga.	0.104"	DIN 8140, SAE MA3329-151	10	90296A402	0000	91709A678	00000	91709A578	00000	90261A187	000000	92955A204	000000
				M3 x 0.5 mm	3	3.2 mm	3.2 mm	DIN 8140, SAE MA3329-102	10	90296A405	00000	91709A355	00000	91709A524	00000	90261A188	000000	92955A155	000000
				M3 x 0.5 mm	4.5	3.2 mm	3.2 mm	DIN 8140, SAE MA3329-152	10	90296A406	00000	91709A355	00000	91709A524	00000	90261A188	000000	92955A155	000000
				M3 x 0.5 mm	6	3.2 mm	3.2 mm	DIN 8140, SAE MA3329-202	10	90296A404	00000	91709A355	00000	91709A524	00000	90261A188	000000	92955A155	000000
				M3 x 0.5 mm	7.5	3.2 mm	3.2 mm	DIN 8140, SAE MA3329-252	1	90296A408	0000	91709A355	00000	91709A524	00000	90261A188	000000	92955A155	000000
				M3.5 x 0.6 mm	5.3	3.7 mm	3.7 mm	DIN 8140, SAE MA3329-153	1	90296A372	0000	91709A195	00000	91709A220	000000	90261A189	000000	92955A155	000000
				M4 x 0.7 mm	4	19 Ga.	0.166"	DIN 8140, SAE MA3329-104	10	90296A407	0000	91709A359	00000	91709A527	00000	90261A190	000000	92955A160	000000
				M4 x 0.7 mm	6	19 Ga.	0.166"	DIN 8140, SAE MA3329-154	10	90296A409	00000	91709A359	00000	91709A527	00000	90261A190	000000	92955A160	000000
				M4 x 0.7 mm	8	19 Ga.	0.166"	DIN 8140, SAE MA3329-204	10	90296A410	00000	91709A359	00000	91709A527	00000	90261A190	000000	92955A160	000000
				M5 x 0.8 mm	5	5.3 mm	5.3 mm	DIN 8140, SAE MA3329-105	10	90296A301	0000	91709A201	00000	91709A530	00000	90261A191	000000	92955A129	00000


				M5 x 0.8 mm	7.5	5.3 mm	5.3 mm	DIN 8140, SAE MA3329-155	10	90296A302	0000	91709A201	00000	91709A530	00000	90261A191	000000	92955A129	00000
				M5 x 0.8 mm	10	5.3 mm	5.3 mm	DIN 8140, SAE MA3329-205	10	90296A303	00000	91709A201	00000	91709A530	00000	90261A191	000000	92955A129	00000
				M5 x 0.8 mm	12.5	5.3 mm	5.3 mm	DIN 8140, SAE MA3329-255	1	90296A305	0000	91709A201	00000	91709A530	00000	90261A191	000000	92955A129	00000
				M6 x 1 mm	6	6.3 mm	6.3 mm	DIN 8140, SAE MA3329-106	10	90296A306	00000	91709A202	00000	91709A533	00000	90261A192	000000	92955A131	00000
				M6 x 1 mm	9	6.3 mm	6.3 mm	DIN 8140, SAE MA3329-156	10	90296A307	00000	91709A202	00000	91709A533	00000	90261A192	000000	92955A131	00000
				M6 x 1 mm	12	6.3 mm	6.3 mm	DIN 8140, SAE MA3329-206	10	90296A308	00000	91709A202	00000	91709A533	00000	90261A192	000000	92955A131	00000
				M7 x 1 mm	14	7.3 mm	7.3 mm	DIN 8140, SAE MA3329-207	5	90296A313	0000	91709A203	00000	91709A536	00000	90261A193	000000	92955A205	000000
				M8 x 1 mm	8	8.3 mm	8.3 mm	DIN 8140, SAE MA3329-108	5	90296A314	0000	91709A650	00000	91709A539	00000	90261A300	000000	92955A133	000000
				M8 x 1 mm	12	8.3 mm	8.3 mm	DIN 8140, SAE MA3329-158	5	90296A315	0000	91709A650	00000	91709A539	00000	90261A300	000000	92955A133	000000
				M8 x 1.25 mm	8	8.4 mm	8.4 mm	DIN 8140, SAE MA3329-109	10	90296A316	0000	91709A204	00000	91709A542	00000	90261A194	000000	92955A133	000000


				M8 x 1.25 mm	12	8.4 mm	8.4 mm	DIN 8140, SAE MA3329-159	10	90296A317	00000	91709A204	00000	91709A542	00000	90261A194	000000	92955A133	000000
				M8 x 1.25 mm	16	8.4 mm	8.4 mm	DIN 8140, SAE MA3329-209	5	90296A319	0000	91709A204	00000	91709A542	00000	90261A194	000000	92955A133	000000
				M10 x 1 mm	15	13/32"	0.406"	DIN 8140, SAE MA3329-191	5	90296A324	00000	91709A672	00000	91709A575	00000	90261A303	000000	92955A135	000000
				M10 x 1.25 mm	15	13/32"	0.406"	DIN 8140, SAE MA3329-160	5	90296A343	0000	91709A653	00000	91709A545	000000	90261A197	000000	92955A135	000000
				M10 x 1.5 mm	10	10.5 mm	10.5 mm	DIN 8140, SAE MA3329-111	10	90296A321	0000	91709A205	00000	91709A548	00000	90261A195	000000	92955A135	000000
				M10 x 1.5 mm	15	10.5 mm	10.5 mm	DIN 8140, SAE MA3329-161	5	90296A322	0000	91709A205	00000	91709A548	00000	90261A195	000000	92955A135	000000
				M10 x 1.5 mm	25	10.5 mm	10.5 mm	DIN 8140, SAE MA3329-261	1	90296A328	0000	91709A205	00000	91709A548	00000	90261A195	000000	92955A135	000000
				M12 x 1.25 mm	18	31/64"	0.484"	DIN 8140, SAE MA3329-163	1	90296A355	0000	91709A675	00000	91709A551	000000	90261A306	000000	92955A137	000000
				M12 x 1.5 mm	18	12.5 mm	12.5 mm	DIN 8140, SAE MA3329-162	1	90296A361	0000	91709A656	00000	91709A554	00000	90261A184	000000	92955A137	000000
				M12 x 1.75 mm	12	12.5 mm	12.5 mm	DIN 8140, SAE MA3329-114	5	90296A326	0000	91709A206	00000	91709A557	00000	90261A196	000000	92955A137	000000


				M12 x 1.75 mm	18	12.5 mm	12.5 mm	DIN 8140, SAE MA3329-164	5	90296A327	0000	91709A206	00000	91709A557	00000	90261A196	000000	92955A137	000000
				M12 x 1.75 mm	24	12.5 mm	12.5 mm	DIN 8140, SAE MA3329-214	1	90296A364	0000	91709A206	00000	91709A557	00000	90261A196	000000	92955A137	000000
				M12 x 1.75 mm	30	12.5 mm	12.5 mm	DIN 8140, SAE MA3329-264	1	90296A366	0000	91709A206	00000	91709A557	00000	90261A196	000000	92955A137	000000
				M14 x 1.5 mm	21	37/64"	0.578"	DIN 8140, SAE MA3329-165	1	90296A414	0000	91709A659	00000	91709A560	000000	90261A199	000000	———	0
				M14 x 2 mm	21	14.5 mm	14.5 mm	DIN 8140, SAE MA3329-166	1	90296A416	0000	91709A368	000000	91709A563	000000	90261A198	000000	———	0
				M16 x 2 mm	16	16.5 mm	16.5 mm	DIN 8140, SAE MA3329-118	1	90296A415	00000	91709A371	00000	91709A566	000000	90261A208	000000	———	0
				M16 x 2 mm	24	16.5 mm	16.5 mm	DIN 8140, SAE MA3329-168	1	90296A417	0000	91709A371	00000	91709A566	000000	90261A208	000000	———	0
				M24 x 3 mm	36	31/32"	0.969"	DIN 8140, SAE MA3329-179	1	90296A431	00000	92450A325	000000	91709A340	000000	92450A523	00000	———	0
				M30 x 3.5 mm	45	1 7/32"	1.219"	DIN 8140	1	90296A436	00000	92450A345	000000	91709A350	000000	92450A543	00000	———	0


				Prongless







						18-8 Stainless Steel

		M3 x 0.5 mm				6	3.2 mm	3.2 mm	DIN 8140, NA0276M3-L20	10	91630A283	0000	91709A355	00000	91709A524	00000	91049A622	000000	———	0

Seize-Resistant Helical Threaded Inserts

Pronged

Install and remove screws repeatedly without sticking or binding. These inserts have a dry-film lubricant on their surface for smooth installation. They're ideal for parts that require frequent disassembly for inspection or repair. Also known as Heli-Coil inserts.

Installation requires a drill bit, a helical insert tap, and an installation tool.

Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.

Dry-Film-Lubricated 18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.

	Inserts								Through-Hole Taps		Closed-End Hole Taps		Installation Tools		Prong Break-Off Tools
	Thread Size	Installed Lg., mm	Drill Bit Size, mm	For Max. Hole Dia.	Specs. Met	Pkg. Qty.		Pkg.		Each		Each		Each		Each
Pronged







				Dry-Film-Lubricated 18-8 Stainless Steel

				M2.5 x 0.45 mm	2.5	37 Ga.	0.104"	DIN 8140, SAE MA3280-101, MIL-I-8846	1	91000A016	00000	91709A678	000000	91709A578	000000	90261A187	0000000	92955A204	0000000


				M2.5 x 0.45 mm	5	37 Ga.	0.104"	DIN 8140, SAE MA3280-201, MIL-I-8846	1	91000A019	0000	91709A678	00000	91709A578	00000	90261A187	000000	92955A204	000000
				M3 x 0.5 mm	3	3.2	3.2 mm	DIN 8140, SAE MA3280-102, MIL-I-8846	1	91000A022	0000	91709A355	00000	91709A524	00000	90261A188	000000	92955A155	000000
				M3 x 0.5 mm	4.5	3.2	3.2 mm	DIN 8140, SAE MA3280-152, MIL-I-8846	1	91000A025	0000	91709A355	00000	91709A524	00000	90261A188	000000	92955A155	000000
				M3 x 0.5 mm	6	3.2	3.2 mm	DIN 8140, SAE MA3280-202, MIL-I-8846	1	91000A028	0000	91709A355	00000	91709A524	00000	90261A188	000000	92955A155	000000
				M4 x 0.7 mm	4	19 Ga.	0.166"	DIN 8140, SAE MA3280-104, MIL-I-8846	1	91000A031	0000	91709A359	00000	91709A527	00000	90261A190	000000	92955A160	000000
				M4 x 0.7 mm	6	19 Ga.	0.166"	DIN 8140, SAE MA3280-154, MIL-I-8846	1	91000A034	0000	91709A359	00000	91709A527	00000	90261A190	000000	92955A160	000000
				M4 x 0.7 mm	8	19 Ga.	0.166"	DIN 8140, SAE MA3280-204, MIL-I-8846	1	91000A037	0000	91709A359	00000	91709A527	00000	90261A190	000000	92955A160	000000
				M5 x 0.8 mm	5	5.3	5.3 mm	DIN 8140, SAE MA3280-105, MIL-I-8846	1	91000A042	0000	91709A201	00000	91709A530	00000	90261A191	000000	92955A129	00000
				M5 x 0.8 mm	7.5	5.3	5.3 mm	DIN 8140, SAE MA3280-155, MIL-I-8846	1	91000A046	0000	91709A201	00000	91709A530	00000	90261A191	000000	92955A129	00000
				M6 x 1 mm	6	6.3	6.3 mm	DIN 8140, SAE MA3280-106, MIL-I-8846	1	91000A050	0000	91709A202	00000	91709A533	00000	90261A192	000000	92955A131	00000


				M6 x 1 mm	9	6.3	6.3 mm	DIN 8140, SAE MA3280-156, MIL-I-8846	1	91000A053	0000	91709A202	00000	91709A533	00000	90261A192	000000	92955A131	00000
				M6 x 1 mm	12	6.3	6.3 mm	DIN 8140, SAE MA3280-206, MIL-I-8846	1	91000A057	0000	91709A202	00000	91709A533	00000	90261A192	000000	92955A131	00000
				M8 x 1.25 mm	12	8.4	8.4 mm	DIN 8140, SAE MA3280-159, MIL-I-8846	1	91000A069	0000	91709A204	00000	91709A542	00000	90261A194	000000	92955A133	000000
				M8 x 1.25 mm	16	8.4	8.4 mm	DIN 8140, SAE MA3280-209, MIL-I-8846	1	91000A062	0000	91709A204	00000	91709A542	00000	90261A194	000000	92955A133	000000

Screw-Locking Seize-Resistant Helical Threaded Inserts

Screws won't get stuck or come loose with these inserts. A dry film on the surface lubricates fasteners during insertion to prevent sticking and binding. Once installed, the irregularly shaped threads tightly grip screws to keep them in place under vibration. Also known as Heli-Coil inserts.

Installation requires a drill bit, a helical insert tap, and an installation tool.

Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.

Dry-Film-Lubricated 18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.

	Inserts								Through-Hole Taps		Closed-End Hole Taps		Installation Tools		Prong Break-Off Tools
	Thread Size	Installed Lg., mm	Drill Bit Size, mm	For Max. Hole Dia.	Specs. Met	Pkg. Qty.		Pkg.		Each		Each		Each		Each
Pronged







				Dry-Film-Lubricated 18-8 Stainless Steel

				M2.5 x 0.45 mm	3.8	37 Ga.	0.104"	DIN 8140, SAE MA3330-151	1	91000A502	00000	91709A678	000000	91709A578	000000	90261A187	0000000	92955A204	0000000


				M4 x 0.7 mm	4	19 Ga.	0.166"	DIN 8140, SAE MA3330-104	1	91000A522	0000	91709A359	00000	91709A527	00000	90261A190	000000	92955A160	000000
				M4 x 0.7 mm	6	19 Ga.	0.166"	DIN 8140, SAE MA3330-154	5	91000A525	0000	91709A359	00000	91709A527	00000	90261A190	000000	92955A160	000000
				M4 x 0.7 mm	8	19 Ga.	0.166"	DIN 8140, SAE MA3330-204	5	91000A527	0000	91709A359	00000	91709A527	00000	90261A190	000000	92955A160	000000
				M5 x 0.8 mm	7.5	5.3	5.3 mm	DIN 8140, SAE MA3330-155	1	91000A536	0000	91709A201	00000	91709A530	00000	90261A191	000000	92955A129	00000
				M5 x 0.8 mm	10	5.3	5.3 mm	DIN 8140, SAE MA3330-205	1	91000A530	0000	91709A201	00000	91709A530	00000	90261A191	000000	92955A129	00000
				M6 x 1 mm	9	6.3	6.3 mm	DIN 8140, SAE MA3330-156	5	91000A544	0000	91709A202	00000	91709A533	00000	90261A192	000000	92955A131	00000
				M6 x 1 mm	12	6.3	6.3 mm	DIN 8140, SAE MA3330-206	1	91000A547	0000	91709A202	00000	91709A533	00000	90261A192	000000	92955A131	00000
				M8 x 1.25 mm	8	8.4	8.4 mm	DIN 8140, SAE MA3330-109	1	91000A561	0000	91709A204	00000	91709A542	00000	90261A194	000000	92955A133	000000
				M8 x 1.25 mm	12	8.4	8.4 mm	DIN 8140, SAE MA3330-159	5	91000A564	0000	91709A204	00000	91709A542	00000	90261A194	000000	92955A133	000000

Weld Nuts

Add permanent threads to thin metal with our go-to weld nuts. Unlike press-fit and rivet nuts, these nuts fuse to the base metal, so they won’t twist and pull out. Three evenly spaced projections concentrate heat away from the threads to prevent them from deforming and create consistent welds. 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. You can also install them on thick pieces of metal.

Steel—Best for dry environments since moisture will cause them to rust. Made of uncoated steel, these nuts require minimal prep. Weld them to uncoated steel surfaces.

18-8 Stainless Steel—Suitable for outdoor use, these nuts resist rust from water and mild chemicals. Weld them to stainless steel surfaces.

Grade 2 Titanium—The best choice when you need a high strength-to-weight ratio, these nuts are 40% lighter than steel nuts. They’re also our most corrosion-resistant weld nuts, standing up to salt water, strong acids, and other harsh chemicals. Weld them to titanium surfaces.

				Collar, mm
	Thread Size	Wd., mm	Ht., mm	Dia.	Ht.	For Hole Dia., mm	Specs. Met	Pkg. Qty.		Pkg.
Steel



		M3 × 0.5 mm	7.5	2.45	4.5	0.55	4.5	DIN 929	100	93337A400	000000


		M4 × 0.7 mm	9	2.85	6	0.65	6	DIN 929	100	93337A500	00000
		M5 × 0.8 mm	10	3.3	7	0.7	7	DIN 929	100	93337A600	00000
		M6 × 1 mm	11	4.25	8	0.75	8	DIN 929	50	93337A110	0000
		M8 × 1.25 mm	14	5.6	10.5	0.9	10.5	DIN 929	50	93337A210	00000
		M10 × 1.25 mm	17	6.85	12.5	1.15	12.5	DIN 929	25	93337A111	00000
		M10 × 1.5 mm	17	6.85	12.5	1.15	12.5	DIN 929	25	93337A310	00000
		M12 × 1.75 mm	19	8.6	14.8	1.4	14.8	DIN 929	25	93337A700	00000
		M14 × 2 mm	22	9.2	16.8	1.8	16.8	DIN 929	10	93337A800	00000
		M16 × 2 mm	24	11.2	18.8	1.8	18.8	DIN 929	10	93337A900	00000


		18-8 Stainless Steel



				M3 × 0.5 mm	7.5	2.5	4.5	0.55	4.5	DIN 929	100	93418A200	00000


				M4 × 0.7 mm	9	2.9	6	0.65	6	DIN 929	50	93418A300	0000
				M5 × 0.8 mm	10	3.3	7	0.7	7	DIN 929	50	93418A400	00000
				M6 × 1 mm	11	4.3	8	0.75	8	DIN 929	25	93418A500	0000
				M8 × 1.25 mm	14	5.6	10.5	0.9	10.5	DIN 929	25	93418A600	00000
				M10 × 1.5 mm	17	6.9	12.5	1.15	12.5	DIN 929	10	93418A700	0000
				M12 × 1.75 mm	19	8.6	14.8	1.4	14.8	DIN 929	10	93418A800	00000
				M16 × 2 mm	24	11.2	18.8	1.8	18.8	DIN 929	1	93418A900	00000


				Grade 2 Titanium



						M6 × 1 mm	11	4.3	8	0.75	8	DIN 929	1	93382A160	00000


						M8 × 1.25 mm	14	5.6	10.5	0.9	10.5	DIN 929	1	93382A170	00000
						M10 × 1.5 mm	17	6.9	12.5	1.15	12.5	DIN 929	1	93382A180	00000

Seize-Resistant Helical Threaded Inserts for Dissimilar Metals

Skip the primer. These inserts are coated to resist galvanic corrosion when used with aluminum or magnesium. The coating also prevents the screw from sticking or binding during installation. Also known as Heli-Coil inserts.

Installation requires a drill bit, a helical insert tap, and an installation tool.

Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.

Dry-Film-Lubricated 18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.

	Inserts								Through-Hole Taps		Closed-End Hole Taps		Installation Tools		Prong Break-Off Tools
	Thread Size	Installed Lg., mm	Drill Bit Size, mm	For Max. Hole Dia.	Specs. Met	Pkg. Qty.		Pkg.		Each		Each		Each		Each
Pronged







				Dry-Film-Lubricated 18-8 Stainless Steel

				M3 x 0.5 mm	4.5	3.2	3.2 mm	DIN 8140	1	93914A312	00000	91709A355	000000	91709A524	000000	90261A188	0000000	92955A155	0000000


				M3 x 0.5 mm	6	3.2	3.2 mm	DIN 8140	1	93914A317	0000	91709A355	00000	91709A524	00000	90261A188	000000	92955A155	000000
				M4 x 0.7 mm	8	19 Ga.	0.166"	DIN 8140	1	93914A334	0000	91709A359	00000	91709A527	00000	90261A190	000000	92955A160	000000
				M5 x 0.8 mm	5	5.3	5.3 mm	DIN 8140	1	93914A341	0000	91709A201	00000	91709A530	00000	90261A191	000000	92955A129	00000
				M5 x 0.8 mm	10	5.3	5.3 mm	DIN 8140	1	93914A338	0000	91709A201	00000	91709A530	00000	90261A191	000000	92955A129	00000
				M6 x 1 mm	9	6.3	6.3 mm	DIN 8140	1	93914A355	0000	91709A202	00000	91709A533	00000	90261A192	000000	92955A131	00000
				M6 x 1 mm	12	6.3	6.3 mm	DIN 8140	1	93914A359	0000	91709A202	00000	91709A533	00000	90261A192	000000	92955A131	00000
				M8 x 1.25 mm	8	8.4	8.4 mm	DIN 8140	1	93914A363	0000	91709A204	00000	91709A542	00000	90261A194	000000	92955A133	000000
				M8 x 1.25 mm	12	8.4	8.4 mm	DIN 8140	1	93914A367	0000	91709A204	00000	91709A542	00000	90261A194	000000	92955A133	000000
				M8 x 1.25 mm	16	8.4	8.4 mm	DIN 8140	1	93914A371	0000	91709A204	00000	91709A542	00000	90261A194	000000	92955A133	000000

Square Weld Nuts

With four symmetrical projections, these nuts create the strongest hold in our offering. Unlike rectangular weld nuts, each projection is equidistant from the threads, so welds wrap evenly for extra strength and twist resistance. Projections concentrate heat away from the threads to prevent them from deforming and create consistent welds. All nuts have a collar pilot that guides them into the hole, holds them in place while welding, and protects the threads from weld spatter.

Steel—Best for dry environments since moisture will cause them to rust. Made of uncoated steel, these nuts require minimal prep. Weld them to uncoated steel surfaces.

	Wd., mm	Ht., mm	For Hole Dia., mm	Specs. Met	Pkg. Qty.		Pkg.
Steel



	M4 × 0.7 mm	7	3.5	4.3	DIN 928	50	93975A710	000000


	M5 × 0.8 mm	9	4.2	5.3	DIN 928	100	93975A720	00000
	M6 × 1 mm	10	5	6.4	DIN 928	100	93975A730	00000
	M8 × 1.25 mm	14	6.5	8.4	DIN 928	100	93975A740	00000
	M10 × 1.5 mm	17	8	10.5	DIN 928	25	93975A750	0000
	M12 × 1.75 mm	19	9.5	13	DIN 928	25	93975A760	00000
	M14 × 2 mm	22	11	16.8	DIN 928	5	93975A121	00000
	M16 × 2 mm	24	13	18.8	DIN 928	5	93975A122	00000