HELICOIL Locking Helical Inserts

Helicoil locking helical inserts are installed into printing presses, gear housing & exhaust systems to create an internal screw thread for installing fasteners in automotive manufacturing & maintenance applications. They have a screw locking design to avoid screw loosening upon installation.

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HELICOIL -

Tanged Screw Locking Inserts, Coarse

Style	Model	Thread Size	Drill Size	Thread Type	Insert Length	Material	Thread Direction	Free Coil Dia.	Price (inc. VAT)
A	3585-20CN1250	1 1/4-7	1 19/64"	Screw Locking , UNC	1.25"	304 Stainless Steel	Right Hand	1.463"	£42.72
A	3585-18CN1688	1 1/8-7	1 11/64"	Screw Locking , UNC	1.688"	304 Stainless Steel	Right Hand	1.335"	£43.37
A	3585-18CN1125	1 1/8-7	1 11/64"	Screw Locking , UNC	1.125"	304 Stainless Steel	Right Hand	1.335"	£19.67
A	3585-16CN1000	1-8	1 1/32"	Screw Locking , UNC	1"	304 Stainless Steel	Right Hand	1.181"	£42.97
A	3585-16CN1500	1-8	1 1/32"	Screw Locking , UNC	1.5"	304 Stainless Steel	Right Hand	1.181"	£43.12
A	A3585-4EN250	1/4-20	H	Screw Locking , UNC	0.25"	Nitronic 60	Right Hand	0.32"	£249.65
A	A3585-4CN375	1/4-20	H	Screw Locking , UNC	0.375"	304 Stainless Steel	Right Hand	0.32"	£163.96
A	A3585-4CNW250	1/4-20	H	Screw Locking , UNC	0.25"	304 Stainless Steel	Right Hand	0.32"	£161.08
A	3585-4CN250S	1/4-20	H	Screw Locking , UNC	0.25"	304 Stainless Steel	Right Hand	0.32"	£1,477.81
A	A3585-4CNW500	1/4-20	H	Screw Locking , UNC	0.5"	304 Stainless Steel	Right Hand	0.32"	£199.29
A	3585-4CNW375S	1/4-20	H	Screw Locking , UNC	0.375"	304 Stainless Steel	Right Hand	0.32"	£1,754.32
A	A3585-4CN250	1/4-20	H	Screw Locking , UNC	0.25"	304 Stainless Steel	Right Hand	0.32"	£151.55
A	A3585-4EN375	1/4-20	H	Screw Locking , UNC	0.375"	Nitronic 60	Right Hand	0.32"	£259.61
A	3585-4CN500S	1/4-20	H	Screw Locking , UNC	0.5"	304 Stainless Steel	Right Hand	0.32"	£809.62
A	3585-4CNW250S	1/4-20	H	Screw Locking , UNC	0.25"	304 Stainless Steel	Right Hand	0.32"	£1,699.92
A	3585-4CN375S	1/4-20	H	Screw Locking , UNC	0.375"	304 Stainless Steel	Right Hand	0.32"	£1,535.89
A	A3585-4CNW375	1/4-20	H	Screw Locking , UNC	0.375"	304 Stainless Steel	Right Hand	0.32"	£138.34
A	A3585-4CN500	1/4-20	H	Screw Locking , UNC	0.5"	304 Stainless Steel	Right Hand	0.32"	£167.27
A	A3585-4EN500	1/4-20	H	Screw Locking , UNC	0.5"	Nitronic 60	Right Hand	0.32"	£267.82
A	3585-4CNW500S	1/4-20	H	Screw Locking , UNC	0.5"	304 Stainless Steel	Right Hand	0.32"	£683.37
A	A3585-4EN750	1/4-20	H	Screw Locking , UNC	0.75"	Nitronic 60	Right Hand	0.32"	£340.70
A	A3585-02CNW172	2-56	3/32"	Screw Locking , UNC	0.172"	304 Stainless Steel	Right Hand	0.115"	£169.39
A	A3585-02EN086	2-56	3/32"	Screw Locking , UNC	0.086"	Nitronic 60	Right Hand	0.115"	£264.30
A	A3585-02CNW129	2-56	3/32"	Screw Locking , UNC	0.129"	304 Stainless Steel	Right Hand	0.115"	£162.39
A	A3585-02CNW086	2-56	3/32"	Screw Locking , UNC	0.086"	304 Stainless Steel	Right Hand	0.115"	£155.12

HELICOIL -

Tanged Screw Locking Inserts, Fine

Style	Model	Thread Size	Drill Size	Thread Type	Insert Length	Material	Thread Direction	Free Coil Dia.	Price (inc. VAT)
A	A3591-24CN2250	1 1/2-12	1 33/64"	Screw Locking , UNF	2.25"	304 Stainless Steel	Right Hand	1.727"	£3,337.77
A	A3591-20CN1250	1 1/4-12	1 17/64"	Screw Locking , UNF	1.25"	304 Stainless Steel	Right Hand	1.454"	£2,689.29
A	A3591-20CN1875	1 1/4-12	1 17/64"	Screw Locking , UNF	1.875"	304 Stainless Steel	Right Hand	1.454"	£3,288.36
A	A3591-18CN1125	1 1/8-12	1 9/64"	Screw Locking , UNF	1.125"	304 Stainless Steel	Right Hand	1.319"	£2,651.04
A	A3591-18CN1688	1 1/8-12	1 9/64"	Screw Locking , UNF	1.688"	304 Stainless Steel	Right Hand	1.319"	£2,941.82
A	3591-161CN1500	1-12	1 1/64"	Screw Locking , UNF	1.5"	304 Stainless Steel	Right Hand	1.184"	£50.38	RFQ
A	3591-161CN1000	1-12	1 1/64"	Screw Locking , UNF	1"	304 Stainless Steel	Right Hand	1.184"	£14.45	RFQ
A	3591-16CN1500	1-14	1 1/64"	Screw Locking , UNF	1.5"	304 Stainless Steel	Right Hand	1.171"	£20.34	RFQ
A	A3591-4CNW375	1/4-28	G	Screw Locking , UNF	0.375"	304 Stainless Steel	Right Hand	0.316"	£192.63
A	3591-4CN500S	1/4-28	G	Screw Locking , UNF	0.5"	304 Stainless Steel	Right Hand	0.316"	£825.32	RFQ
A	A3591-4CN313	1/4-28	G	Screw Locking , UNF	0.313"	304 Stainless Steel	Right Hand	0.316"	£363.25
A	A3591-4CN375	1/4-28	G	Screw Locking , UNF	0.375"	304 Stainless Steel	Right Hand	0.316"	£177.67
A	A3591-4CN500	1/4-28	G	Screw Locking , UNF	0.5"	304 Stainless Steel	Right Hand	0.316"	£184.39
A	A3591-4CNW187	1/4-28	G	Screw Locking , UNF	0.187"	304 Stainless Steel	Right Hand	0.316"	£312.60
A	A3591-4CNW500	1/4-28	G	Screw Locking , UNF	0.5"	304 Stainless Steel	Right Hand	0.316"	£184.04
A	A3591-4EN250	1/4-28	G	Screw Locking , UNF	0.25"	Nitronic 60	Right Hand	0.316"	£241.65	RFQ
A	A3591-4EN375	1/4-28	G	Screw Locking , UNF	0.375"	Nitronic 60	Right Hand	0.316"	£240.81	RFQ
A	3591-4CN375S	1/4-28	G	Screw Locking , UNF	0.375"	304 Stainless Steel	Right Hand	0.316"	£1,535.89	RFQ
A	A3591-4CNW250	1/4-28	G	Screw Locking , UNF	0.25"	304 Stainless Steel	Right Hand	0.316"	£177.14
A	A3591-4CN250	1/4-28	G	Screw Locking , UNF	0.25"	304 Stainless Steel	Right Hand	0.316"	£156.39
A	A3591-4EN500	1/4-28	G	Screw Locking , UNF	0.5"	Nitronic 60	Right Hand	0.316"	£255.65	RFQ
A	3591-4CNW250S	1/4-28	G	Screw Locking , UNF	0.25"	304 Stainless Steel	Right Hand	0.316"	£1,699.92	RFQ
A	3591-4CNW500S	1/4-28	G	Screw Locking , UNF	0.5"	304 Stainless Steel	Right Hand	0.316"	£925.28	RFQ
A	3591-4CNW375S	1/4-28	G	Screw Locking , UNF	0.375"	304 Stainless Steel	Right Hand	0.316"	£1,566.22	RFQ
A	3591-4CN250S	1/4-28	G	Screw Locking , UNF	0.25"	304 Stainless Steel	Right Hand	0.316"	£1,228.05	RFQ

HELICOIL -

Tanged Screw Locking Inserts, Metric Coarse

Style	Model	Thread Size	Drill Size	Thread Type	Insert Length	Material	Thread Direction	Free Coil Dia.	Price (inc. VAT)
A	4184-2.5CNW025S	M2.5 x 0.45	2.55mm	Metric Coarse , Screw Locking	2.5mm	304 Stainless Steel	Right Hand	3.45mm	£1,463.90
A	A4184-2.5CNW038	M2.5 x 0.45	#37	Metric Coarse , Screw Locking	3.8mm	304 Stainless Steel	Right Hand	3.45mm	£168.12
A	A4184-2.5CNW063	M2.5 x 0.45	#37	Metric Coarse , Screw Locking	6.3mm	304 Stainless Steel	Right Hand	3.45mm	£193.66
A	A4184-2.5CN075	M2.5 x 0.45	2.55mm	Metric Coarse , Screw Locking	7.5mm	304 Stainless Steel	Right Hand	3.45mm	£200.87
A	A4184-2.5CN025	M2.5 x 0.45	2.55mm	Metric Coarse , Screw Locking	2.5mm	304 Stainless Steel	Right Hand	3.45mm	£141.18
A	A4184-2.5CN038	M2.5 x 0.45	2.55mm	Metric Coarse , Screw Locking	3.8mm	304 Stainless Steel	Right Hand	3.45mm	£163.47
A	4184-2.5CN025S	M2.5 x 0.45	2.55mm	Metric Coarse , Screw Locking	2.5mm	304 Stainless Steel	Right Hand	3.45mm	£1,593.09
A	4184-2.5CN038S	M2.5 x 0.45	2.55mm	Metric Coarse , Screw Locking	3.8mm	304 Stainless Steel	Right Hand	3.45mm	£1,649.99
A	4184-2.5CN050S	M2.5 x 0.45	2.55mm	Metric Coarse , Screw Locking	5mm	304 Stainless Steel	Right Hand	3.45mm	£1,735.34
A	4184-2.5CNW038S	M2.5 x 0.45	2.55mm	Metric Coarse , Screw Locking	3.8mm	304 Stainless Steel	Right Hand	3.45mm	£1,499.33
A	A4184-2.5CNW050	M2.5 x 0.45	#37	Metric Coarse , Screw Locking	5mm	304 Stainless Steel	Right Hand	3.45mm	£169.39
A	4184-2.5CNW050S	M2.5 x 0.45	2.55mm	Metric Coarse , Screw Locking	5mm	304 Stainless Steel	Right Hand	3.45mm	£1,859.55
A	A4184-2.5CN050	M2.5 x 0.45	2.55mm	Metric Coarse , Screw Locking	5mm	304 Stainless Steel	Right Hand	3.45mm	£171.13
A	4184-3CN030S	M3 x 0.5	1/8"	Metric Coarse , Screw Locking	3mm	304 Stainless Steel	Right Hand	4.075mm	£1,488.13
A	4184-3CNW030S	M3 x 0.5	1/8"	Metric Coarse , Screw Locking	3mm	304 Stainless Steel	Right Hand	4.075mm	£1,570.33
A	4184-3CNW060S	M3 x 0.5	1/8"	Metric Coarse , Screw Locking	6mm	304 Stainless Steel	Right Hand	4.075mm	£1,566.22
A	4184-3CN060S	M3 x 0.5	1/8"	Metric Coarse , Screw Locking	6mm	304 Stainless Steel	Right Hand	4.075mm	£1,623.62
A	4184-3CNW045S	M3 x 0.5	1/8"	Metric Coarse , Screw Locking	4.5mm	304 Stainless Steel	Right Hand	4.075mm	£1,499.33
A	A4184-3CN075	M3 x 0.5	3.15mm	Metric Coarse , Screw Locking	7.5mm	304 Stainless Steel	Right Hand	4.075mm	£126.31	RFQ
A	A4184-3CN090	M3 x 0.5	3.15mm	Metric Coarse , Screw Locking	9mm	304 Stainless Steel	Right Hand	4.075mm	£210.57	RFQ
A	A4184-3CN060	M3 x 0.5	3.15mm	Metric Coarse , Screw Locking	6mm	304 Stainless Steel	Right Hand	4.075mm	£179.90	RFQ
A	A4184-3CN030	M3 x 0.5	3.15mm	Metric Coarse , Screw Locking	3mm	304 Stainless Steel	Right Hand	4.075mm	£153.91
A	A4184-3EN060	M3 x 0.5	3.15mm	Metric Coarse , Screw Locking	6mm	Nitronic 60	Right Hand	4.075mm	£549.45	RFQ
A	A4184-3CN045	M3 x 0.5	3.15mm	Metric Coarse , Screw Locking	4.5mm	304 Stainless Steel	Right Hand	4.075mm	£172.15
A	4184-3CN045S	M3 x 0.5	1/8"	Metric Coarse , Screw Locking	4.5mm	304 Stainless Steel	Right Hand	4.075mm	£1,546.21

HELICOIL -

Tangless Screw Locking Inserts, Coarse

Style	Model	Thread Size	Drill Size	Thread Type	Insert Length	Material	Thread Direction	Free Coil Dia.	Price (inc. VAT)
A	AT3585-4CW250	1/4-20	G	Screw Locking , UNC	0.25"	304 Stainless Steel	Right Hand	0.32"	£150.45
A	T3585-4C375S	1/4-20	G	Screw Locking , UNC	0.375"	304 Stainless Steel	Right Hand	0.32"	£1,035.86
A	T3585-4C250S	1/4-20	G	Screw Locking , UNC	0.25"	304 Stainless Steel	Right Hand	0.32"	£987.24
A	AT3585-4C250	1/4-20	G	Screw Locking , UNC	0.25"	304 Stainless Steel	Right Hand	0.32"	£216.31
A	AT3585-4C375	1/4-20	G	Screw Locking , UNC	0.375"	304 Stainless Steel	Right Hand	0.32"	£226.25
A	T3585-4C500S	1/4-20	G	Screw Locking , UNC	0.5"	304 Stainless Steel	Right Hand	0.32"	£1,079.63
A	AT3585-4CW500	1/4-20	G	Screw Locking , UNC	0.5"	304 Stainless Steel	Right Hand	0.32"	£289.67
A	AT3585-4CW375	1/4-20	G	Screw Locking , UNC	0.375"	304 Stainless Steel	Right Hand	0.32"	£164.28
A	AT3585-4C500	1/4-20	G	Screw Locking , UNC	0.5"	304 Stainless Steel	Right Hand	0.32"	£239.15
A	AT3585-02CW172	2-56	3/32"	Screw Locking , UNC	0.172"	304 Stainless Steel	Right Hand	0.115"	£159.56
A	T3585-02C172S	2-56	3/32"	Screw Locking , UNC	0.172"	304 Stainless Steel	Right Hand	0.145"	£869.67
A	AT3585-02C086	2-56	3/32"	Screw Locking , UNC	0.086"	304 Stainless Steel	Right Hand	0.115"	£201.83
A	AT3585-02CW129	2-56	3/32"	Screw Locking , UNC	0.129"	304 Stainless Steel	Right Hand	0.115"	£156.46
A	T3585-02C129S	2-56	3/32"	Screw Locking , UNC	0.129"	304 Stainless Steel	Right Hand	0.145"	£935.61
A	AT3585-02C129	2-56	3/32"	Screw Locking , UNC	0.129"	304 Stainless Steel	Right Hand	0.115"	£213.34
A	AT3585-02C172	2-56	3/32"	Screw Locking , UNC	0.172"	304 Stainless Steel	Right Hand	0.115"	£224.41
A	AT3585-02CW086	2-56	3/32"	Screw Locking , UNC	0.086"	304 Stainless Steel	Right Hand	0.115"	£257.60
A	AT3585-04CW112	4-40	#31	Screw Locking , UNC	0.112"	304 Stainless Steel	Right Hand	0.152"	£257.60
A	AT3585-04C168	4-40	#31	Screw Locking , UNC	0.168"	304 Stainless Steel	Right Hand	0.152"	£213.34
A	AT3585-04CW168	4-40	#31	Screw Locking , UNC	0.168"	304 Stainless Steel	Right Hand	0.152"	£266.44
A	AT3585-04CW224	4-40	#31	Screw Locking , UNC	0.224"	304 Stainless Steel	Right Hand	0.152"	£279.79
A	AT3585-04C224	4-40	#31	Screw Locking , UNC	0.224"	304 Stainless Steel	Right Hand	0.152"	£224.41
A	AT3585-04C112	4-40	#31	Screw Locking , UNC	0.112"	304 Stainless Steel	Right Hand	0.152"	£201.83
A	T3585-04C112S	4-40	#31	Screw Locking , UNC	0.112"	304 Stainless Steel	Right Hand	0.151"	£946.22
A	T3585-04C224S	4-40	#31	Screw Locking , UNC	0.224"	304 Stainless Steel	Right Hand	0.151"	£1,073.42

HELICOIL -

Tangless Screw Locking Inserts, Fine

Style	Model	Thread Size	Drill Size	Thread Type	Insert Length	Material	Thread Direction	Free Coil Dia.	Price (inc. VAT)
A	AT3591-4C500	1/4-28	G	Screw Locking , UNF	0.5"	304 Stainless Steel	Right Hand	0.316"	£265.77
A	T3591-4C250S	1/4-28	G	Screw Locking , UNF	0.25"	304 Stainless Steel	Right Hand	0.316"	£645.38
A	AT3591-4CW500	1/4-28	G	Screw Locking , UNF	0.5"	304 Stainless Steel	Right Hand	0.316"	£289.67
A	T3591-4C500S	1/4-28	G	Screw Locking , UNF	0.5"	304 Stainless Steel	Right Hand	0.316"	£794.43
A	AT3591-4C375	1/4-28	G	Screw Locking , UNF	0.375"	304 Stainless Steel	Right Hand	0.316"	£144.76
A	AT3591-4CW375	1/4-28	G	Screw Locking , UNF	0.375"	304 Stainless Steel	Right Hand	0.316"	£148.58
A	AT3591-4CW250	1/4-28	G	Screw Locking , UNF	0.25"	304 Stainless Steel	Right Hand	0.316"	£262.18
A	T3591-4C375S	1/4-28	G	Screw Locking , UNF	0.375"	304 Stainless Steel	Right Hand	0.316"	£957.33
A	AT3591-4C250	1/4-28	G	Screw Locking , UNF	0.25"	304 Stainless Steel	Right Hand	0.316"	£240.07
A	AT3591-3CW190	10-32	#7	Screw Locking , UNF	0.19"	304 Stainless Steel	Right Hand	0.246"	£146.49
A	AT3591-3C285	10-32	#7	Screw Locking , UNF	0.285"	304 Stainless Steel	Right Hand	0.246"	£218.14
A	T3591-3C380S	10-32	#7	Screw Locking , UNF	0.38"	304 Stainless Steel	Right Hand	0.246"	£885.44
A	T3591-3C285S	10-32	#7	Screw Locking , UNF	0.285"	304 Stainless Steel	Right Hand	0.246"	£809.75
A	AT3591-3C380	10-32	#7	Screw Locking , UNF	0.38"	304 Stainless Steel	Right Hand	0.246"	£229.39
A	T3591-3C190S	10-32	#7	Screw Locking , UNF	0.19"	304 Stainless Steel	Right Hand	0.246"	£1,019.38
A	AT3591-3CW380	10-32	#7	Screw Locking , UNF	0.38"	304 Stainless Steel	Right Hand	0.246"	£151.18
A	AT3591-3CW285	10-32	#7	Screw Locking , UNF	0.285"	304 Stainless Steel	Right Hand	0.246"	£270.93

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