Why are some thread inserts larger in diameter than the tapped hole before installation?

Selected thread inserts have a slightly larger diameter than the diameter of the tapped hole before installation, as the installation tool decreases the leading coil's diameter when it applies torque to the insert's prong / tang for easy installation. Once the threaded insert is installed, it acts like a spring and expands outward onto the material for strong anchoring.

How to choose the length of a helical insert?

The helical insert length should be at least as long as the desired screw diameter. Users may also choose inserts having longer lengths for increased strength. The exact insert length can vary depending upon the application & the material being installed into the insert. Materials like steel do not need long inserts. In contrast, for soft materials like aluminium, a longer insert is preferred.

How to install a helical thread insert?

Drill a hole according to the length of the insert / screw / bolt using the suggested drill bit size. Thread the drilled hole using a tap (sold separately), then wind the insert into the hole using an installation tool. Use a prong break-off tool or punch to remove the prong and allow free passage of the fastener.

How to install a key-locking thread insert?

Drill a hole according to the required application. Tap the drilled hole, then wind the insert into the hole. Drive the key into the material using the installation tool & hammer.

Can thread inserts be removed once installed?

Yes, some thread inserts can be removed using removal tools that attach to them & unwind them in the direction opposite to that used during installation.

Thread Inserts

Filter

Thread inserts are suitable for installing threaded fasteners in soft materials, thin materials or materials with a stripped & threaded hole. They are ideal for automobile, aerospace...Read more

E-Z LOK -

Grade 18-8 Stainless Steel Thread Inserts
Grade 18-8 stainless steel thread inserts, also known as flanged threaded inserts, are small cylindrical metal fasteners used to reinforce and strengthen threaded holes in various materials such as aluminium, magnesium or plastic.

Style	Model	Drill Size	Thread Type	Type	Material	Price (ex. VAT)	Pkg. Qty.
A	260-332CR	1/4"	Fine	Flange	Stainless Steel	€21.73	10
B	240-332CR	1/4"	Coarse	Flush	Stainless Steel	€24.12	10
C	240-002CR	1/8"	Coarse	Flush	Stainless Steel	€18.43	10
D	260-002CR	1/8"	Coarse	Flange	Stainless Steel	€27.11	25
E	240-5CR	3/8"	Coarse	Flush	Stainless Steel	€35.57	10
F	240-006CR	3/16"	Coarse	Flush	Stainless Steel	€11.30	10
G	260-006CR	3/16"	Coarse	Flange	Stainless Steel	€18.36	10
H	240-4CR	5/16"	Coarse	Flush	Stainless Steel	€29.88	10
I	260-4CR	5/16"	Coarse	Flange	Stainless Steel	€18.22	5
J	260-004CR	5/32"	Coarse	Flange	Stainless Steel	€15.33	10
K	240-004CR	5/32"	Coarse	Flush	Stainless Steel	€9.81	10
L	240-6CR	7/16"	Coarse	Flush	Stainless Steel	€21.90	5
M	260-008CR	7/32"	Coarse	Flange	Stainless Steel	€17.07	10
N	240-008CR	7/32"	Coarse	Flush	Stainless Steel	€17.52	10

CHRISLYNN -

Grade 12L14 Steel Thread Inserts

Style	Model	Drill Size	Internal Thread Size	Material
A	9329-006	#7	#6-32	Steel	RFQ
A	9329-1414	1 7/64"	7/8"-14	Steel	RFQ
A	9329-14	1 7/64"	7/8"-9	Steel	RFQ
A	9329-16	1 9/32"	1"-8	Steel	RFQ
A	9329-1614	1 9/32"	1"-14	Steel	RFQ
A	9329-3	5/16"	#10-24	Steel	RFQ
A	9329-332	5/16"	#10-32	Steel	RFQ
A	9329-004	5/32"	#4-40	Steel	RFQ
B	9335-10	7/8"	5/8"-11	Steel	RFQ
A	9329-1216	7/8"	3/4"-16	Steel	RFQ
A	9329-12	7/8"	3/4"-10	Steel	RFQ
B	9329-1412	11/16"	M14 x 1.25	Steel	RFQ
B	9329-1408	11/16"	M14 x 1.25	Steel	RFQ
B	9329-1406	11/16"	M14 x 1.25	Steel	RFQ
B	9750-14	16.5 mm	M14 x 1.25	Steel	RFQ
A	9329-7	17/32"	7/16"-14	Steel	RFQ
B	9335-6	17/32"	3/8"-16	Steel	RFQ
A	9329-720	17/32"	7/16"-20	Steel	RFQ
A	9329-820	21/32"	1/2"-20	Steel	RFQ
A	9329-8	21/32"	1/2"-13	Steel	RFQ
A	9329-801	21/32"	1/2"-13	Steel	RFQ
A	9329-918	21/32"	9/16"-18	Steel	RFQ
A	9329-9	21/32"	9/16"-12	Steel	RFQ
A	9329-428	23/64"	1/4"-28	Steel	RFQ
A	9329-4	23/64"	1/4"-20	Steel	RFQ

APPROVED VENDOR -

Press-Fit Inserts

Style	Model	MPN
A	240M3CRPK5	240M3CRPK5	RFQ
A	240M4CRPK5	240M4CRPK5	RFQ
A	240M5CRPK5	240M5CRPK5	RFQ
A	240M6CRPK5	240M6CRPK5	RFQ
B	240M8ALPK10	240M8ALPK10	RFQ
C	240M10ALPK10	240M10ALPK10	RFQ
D	260M3BRPK50	260M3BRPK50	RFQ
E	260M3CRPK5	260M3CRPK5	RFQ
D	260M4BRPK50	260M4BRPK50	RFQ
F	260M4CRPK5	260M4CRPK5	RFQ
D	260M5BRPK25	260M5BRPK25	RFQ
F	260M5CRPK5	260M5CRPK5	RFQ
G	260M6BRPK25	260M6BRPK25	RFQ
F	260M6CRPK5	260M6CRPK5	RFQ
H	260M8ALPK10	260M8ALPK10	RFQ
G	260M8BRPK10	260M8BRPK10	RFQ
H	260M10ALPK10	260M10ALPK10	RFQ
I	2403ALPK25	2403ALPK25	RFQ
A	2403CRPK5	2403CRPK5	RFQ
B	2405ALPK10	2405ALPK10	RFQ
C	2406ALPK10	2406ALPK10	RFQ
J	2603ALPK10	2603ALPK10	RFQ
H	2605ALPK10	2605ALPK10	RFQ
H	2606ALPK10	2606ALPK10	RFQ
K	240008BR250PK100	240008BR250PK100	RFQ

Brass Thread Inserts

Style	Model	Drill Size	Internal Thread Size	Thread Type	Fins	Type	Material	Price (ex. VAT)	Pkg. Qty.
A	170-332-BR	-	#10-32	Fine	1	-	Brass	€38.78	50
B	170-006-BR	#5	#6-32	Coarse	1	-	Brass	€27.96	50
C	270-006-BR	#5	#6-32	Coarse	2	-	Brass	€35.38	50
D	9400-6	1/2"	3/8"-16	-	-	-	Brass	-	1	RFQ
D	9400-5	1/2"	5/16"-18	-	-	-	Brass	-	1	RFQ
D	9400-M8	1/2"	M8 x 1.25	-	-	-	Brass	-	1	RFQ
D	9400-624	1/2"	3/8"-24	-	-	-	Brass	-	1	RFQ
D	9400-524	1/2"	5/16"-24	-	-	-	Brass	-	1	RFQ
D	9400-M3	1/4"	M3 x 0.5	-	-	-	Brass	-	1	RFQ
D	9400-004	1/4"	#4-40	-	-	-	Brass	-	1	RFQ
E	1GUC9	1/4"	#10-32	Coarse	-	Reverse Slot	Brass	€18.47	25
D	9400-M4	1/4"	M4 x 0.7	-	-	-	Brass	-	1	RFQ
D	9400-006	1/4"	#6-32	-	-	-	Brass	-	1	RFQ
D	9400-008	1/4"	#8-32	-	-	-	Brass	-	1	RFQ
F	1GUC5	1/8"	#2-56	Coarse	-	Reverse Slot	Brass	€14.53	50
D	9400-M6	3/8"	M6 x 1	-	-	-	Brass	-	1	RFQ
D	9400-4	3/8"	1/4"-20	-	-	-	Brass	-	1	RFQ
D	9400-3	3/8"	#10-24	-	-	-	Brass	-	1	RFQ
D	9400-428	3/8"	1/4"-28	-	-	-	Brass	-	1	RFQ
D	9400-M5	3/8"	M5 x 0.8	-	-	-	Brass	-	1	RFQ
D	9400-332	3/8"	#10-32	-	-	-	Brass	-	1	RFQ
G	1GUC7	3/16"	#6-32	Coarse	-	Reverse Slot	Brass	€15.52	50
H	1GUC6	3/16"	#4-40	Coarse	-	Reverse Slot	Brass	€14.96	50
I	1GUD1	5/16"	1/4"-20	Coarse	-	Reverse Slot	Brass	€17.57	25
J	1GUC8	7/32"	#8-32	Coarse	-	Reverse Slot	Brass	€17.71	50

CHRISLYNN -

Grade C1215 Carbon Steel Thread Inserts

Style	Model	Thread Size	Drill Size	Internal Thread Size	Material
A	64900	#10-24, #10-32, 1/2"-13, 1/2"-20, 1/4"-20, 1/4"-28, 3/8"-16, 3/8"-24, 5/16"-18, 5/16"-24, 7/16"-14, 7/16"-20	-	-	Carbon Steel	RFQ
A	64905	#10-24, #10-32, 1/2"-13, 1/2"-20, 1/4"-20, 1/4"-28, 3/8"-16, 3/8"-24, 5/16"-18, 5/16"-24, 7/16"-14, 7/16"-20	-	-	Carbon Steel	RFQ
B	65943	1 1/2"-12	1 7/16"	1"-8	Carbon Steel	RFQ
C	66143	1 1/2"-12	1 5/16"	#1-12	Carbon Steel	RFQ
B	65913	1 1/2"-12	1 7/16"	1 1/8"-7	Carbon Steel	RFQ
C	66113	1 1/2"-12	1 7/16"	1 1/8"-12	Carbon Steel	RFQ
C	66110	1 1/4"-12	1 3/16"	7/8"-14	Carbon Steel	RFQ
B	65941	1 1/4"-12	1 3/16"	3/4"-10	Carbon Steel	RFQ
B	65910	1 1/4"-12	1 3/16"	7/8"-9	Carbon Steel	RFQ
C	66141	1 1/4"-12	1 3/16"	3/4"-16	Carbon Steel	RFQ
B	65909	1 1/8"-12	1 1/16"	3/4"-10	Carbon Steel	RFQ
C	66109	1 1/8"-12	1 1/16"	3/4"-16	Carbon Steel	RFQ
C	66142	1 3/8"-12	1 5/16"	7/8"-14	Carbon Steel	RFQ
C	66112	1 3/8"-12	1 5/16"	1"-14	Carbon Steel	RFQ
B	65911	1 3/8"-12	1 5/16"	1"-8	Carbon Steel	RFQ
B	65942	1 3/8"-12	1 5/16"	7/8"-9	Carbon Steel	RFQ
C	66111	1 3/8"-12	1 5/16"	#1-12	Carbon Steel	RFQ
C	66114	1 5/8"-12	1 9/16"	1 1/4"-12	Carbon Steel	RFQ
B	65914	1 5/8"-12	1 9/16"	1 1/4"-7	Carbon Steel	RFQ
C	66116	1 7/8"-12	1 13/16"	1 1/2"-12	Carbon Steel	RFQ
B	65916	1 7/8"-12	1 13/16"	1 1/2"-6	Carbon Steel	RFQ
C	66140	1"-12	15/16"	5/8"-18	Carbon Steel	RFQ
B	65940	1"-12	15/16"	5/8"-11	Carbon Steel	RFQ
B	65903	1/2"-13	29/64"	5/16"-18	Carbon Steel	RFQ
B	65934	1/2"-13	29/64"	1/4"-20	Carbon Steel	RFQ

CHRISLYNN -

Grade 304 Stainless Steel Thread Inserts

Style	Model	Thread Size	Drill Size	Number Of Pieces	Material	Price (ex. VAT)	Pkg. Qty.
A	83100	#2-56	3/32"	12	Stainless Steel	-	12	RFQ
A	83102	#3-48	#36	12	Stainless Steel	-	12	RFQ
A	83103	#3-56	#37	12	Stainless Steel	-	12	RFQ
A	83104	#4-40	#31	12	Stainless Steel	-	12	RFQ
A	83105	#4-48	#31	12	Stainless Steel	-	12	RFQ
A	83106	#5-40	#29	12	Stainless Steel	-	12	RFQ
B	83636	#6-32	1 1/32"	4	Stainless Steel	€92.08	4
A	83108	#6-32	#25	12	Stainless Steel	-	12	RFQ
A	83109	#6-40	#25	12	Stainless Steel	-	12	RFQ
A	83110	#8-32	11/64"	12	Stainless Steel	-	12	RFQ
A	83111	#8-36	#17	12	Stainless Steel	-	12	RFQ
A	83112	#10-24	13/64"	12	Stainless Steel	-	12	RFQ
A	83113	#10-32	13/64"	12	Stainless Steel	-	12	RFQ
A	83114	#12-24	15/64"	12	Stainless Steel	-	12	RFQ
A	83115	#12-28	15/64"	12	Stainless Steel	-	12	RFQ
A	83144	1 1/2"-6	1 17/32"	1	Stainless Steel	-	1	RFQ
A	83145	1 1/2"-12	1 17/32"	1	Stainless Steel	-	1	RFQ
A	83140	1 1/4"-7	1 9/32"	1	Stainless Steel	-	1	RFQ
A	83141	1 1/4"-12	1 9/32"	1	Stainless Steel	-	1	RFQ
A	83138	1 1/8"-7	1 5/32"	1	Stainless Steel	-	1	RFQ
A	83139	1 1/8"-12	1 5/32"	1	Stainless Steel	-	1	RFQ
A	83142	1 3/8"-6	1 13/32"	1	Stainless Steel	-	1	RFQ
A	83143	1 3/8"-12	1 13/32"	1	Stainless Steel	-	1	RFQ
A	83135	1"-8	1 1/32"	1	Stainless Steel	-	1	RFQ
B	83735	1"-8	1 1/32"	4	Stainless Steel	€105.56	4

HELICOIL -

High Speed Steel Thread Inserts

Style	Model	Thread Size	Overall Length	Drill Size	Finish	Shank Dia.	Number Of Flutes	Thread Direction	Tap Style	Price (ex. VAT)
A	328-8	1/2"-14	-	45/64"	Bright	57/64"	5	Right Hand	Pipe	€628.41
B	328-4	1/4"-18	2 1/2"	-	Uncoated	11/16"	4	Right Hand	Pipe	€343.61
A	328-2	1/8"-27	-	-	Uncoated	9/16"	4	Right Hand	Pipe	€147.83
A	328-6	3/8"-18	3 1/8"	9/16"	Uncoated	11/16"	4	Right Hand	Pipe	€449.26

CHRISLYNN -

Grade 303 Stainless Steel Thread Inserts

Style	Model	Thread Size	Drill Size	Internal Thread Size	Material
A	76283	#8-32	#29	#2-56	Stainless Steel	RFQ
A	64901	#10-24, #10-32, 1/2"-13, 1/2"-20, 1/4"-20, 1/4"-28, 3/8"-16, 3/8"-24, 5/16"-18, 5/16"-24, 7/16"-14, 7/16"-20	-	-	Stainless Steel	RFQ
A	64906	#10-24, #10-32, 1/2"-13, 1/2"-20, 1/4"-20, 1/4"-28, 3/8"-16, 3/8"-24, 5/16"-18, 5/16"-24, 7/16"-14, 7/16"-20	-	-	Stainless Steel	RFQ
B	9303-004	#10-32	5/32"	#4-40	Stainless Steel	RFQ
A	76284	#10-32	#20	#4-40	Stainless Steel	RFQ
A	76285	#12-28	3/16"	#6-32	Stainless Steel	RFQ
C	76543	1 1/2"-12	1 5/16"	#1-12	Stainless Steel	RFQ
A	76343	1 1/2"-12	1 7/16"	1"-8	Stainless Steel	RFQ
A	76341	1 1/4"-12	1 3/16"	3/4"-10	Stainless Steel	RFQ
A	76510	1 1/4"-12	1 3/16"	7/8"-14	Stainless Steel	RFQ
C	76541	1 1/4"-12	1 3/16"	3/4"-16	Stainless Steel	RFQ
A	76310	1 1/4"-12	1 3/16"	7/8"-9	Stainless Steel	RFQ
A	76309	1 1/8"-12	1 1/16"	3/4"-10	Stainless Steel	RFQ
A	76509	1 1/8"-12	1 1/16"	3/4"-16	Stainless Steel	RFQ
C	76542	1 3/8"-12	1 5/16"	7/8"-14	Stainless Steel	RFQ
A	76311	1 3/8"-12	1 5/16"	1"-8	Stainless Steel	RFQ
A	76342	1 3/8"-12	1 5/16"	7/8"-9	Stainless Steel	RFQ
A	76511	1 3/8"-12	1 5/16"	#1-12	Stainless Steel	RFQ
B	9303-12	1"-8	7/8"	3/4"-10	Stainless Steel	RFQ
A	76340	1"-12	15/16"	5/8"-11	Stainless Steel	RFQ
C	76540	1"-12	15/16"	5/8"-18	Stainless Steel	RFQ
A	76503	1/2"-13	29/64"	5/16"-24	Stainless Steel	RFQ
A	76303	1/2"-13	29/64"	5/16"-18	Stainless Steel	RFQ
A	76324	1/2"-13	29/64"	3/8"-16	Stainless Steel	RFQ
B	9303-5	1/2"-13	27/64"	5/16"-18	Stainless Steel	RFQ

VOLKEL -

Refill, From Stainless Steel, M 20 x 1.5 - 3D Size

Model	Item	Price (ex. VAT)
40641	CM6FDB	€13.77

VOLKEL -

Refill, From Stainless Steel, BSW 3/8 x 16 - 1D Size

Model	Item	Price (ex. VAT)
44245	CM6FEX	€4.46

VOLKEL -

Refill, From Stainless Steel, UNF 7/8 x 14 - 1D Size

Model	Item	Price (ex. VAT)
44235	CM6FEQ	€14.90

VOLKEL -

Refill, From Stainless Steel, UNF 3/8 x 24 - 1D Size

Model	Item	Price (ex. VAT)
44227	CM6FEJ	€3.89

VOLKEL -

Refill, From Stainless Steel, UNF No. 4 x 48 - 1D Size

Model	Item	Price (ex. VAT)
44221	CM6FEC	€6.08

VOLKEL -

Refill, From Stainless Steel, UNC 1/2 x 13 - 1D Size

Model	Item	Price (ex. VAT)
44211	CM6FDW	€4.41

VOLKEL -

Refill, From Stainless Steel, UNC No. 10 x 24 - 1D Size

Model	Item	Price (ex. VAT)
44205	CM6FDP	€3.81

VOLKEL -

Refill, From Stainless Steel, M 24 x 1.5 - 3D Size

Model	Item	Price (ex. VAT)
40647	CM6FDH	€17.46

VOLKEL -

Refill, From Stainless Steel, M 16 x 1.5 - 3D Size

Model	Item	Price (ex. VAT)
40635	CM6FCV	€7.29

VOLKEL -

Refill, From Stainless Steel, BSF 7/16 x 18 - 1D Size

Model	Item	Price (ex. VAT)
44267	CM6FFK	€5.10

VOLKEL -

Refill, From Stainless Steel, M 12 x 1.0 - 3D Size

Model	Item	Price (ex. VAT)
40624	CM6FCN	€5.22

VOLKEL -

Refill, From Stainless Steel, M 10 x 1.25 - 3D Size

Model	Item	Price (ex. VAT)
40616	CM6FCG	€4.13

VOLKEL -

Refill, From Stainless Steel, M 6 x 1.0 - 3D Size

Model	Item	Price (ex. VAT)
40609	CM6FCA	€5.10

12...62 63

Thread Inserts

Thread inserts are suitable for installing threaded fasteners in soft materials, thin materials or materials with a stripped & threaded hole. They are ideal for automobile, aerospace and maintenance applications. Raptor Supplies offers these thread inserts from brands like Grainger, Chrislynn, Helicoil, E-Z Lok & Walter. They provide more strength, versatility & resilient operation than traditional threaded holes.

Strictly Necessary Cookies

Advertising

Recommendations

Functionality

Analytics

Categories

Brands

Thread Inserts

Grade 18-8 Stainless Steel Thread Inserts
Grade 18-8 stainless steel thread inserts, also known as flanged threaded inserts, are small cylindrical metal fasteners used to reinforce and strengthen threaded holes in various materials such as aluminium, magnesium or plastic.

Grade 12L14 Steel Thread Inserts

Press-Fit Inserts

Brass Thread Inserts

Grade C1215 Carbon Steel Thread Inserts

Grade 304 Stainless Steel Thread Inserts

High Speed Steel Thread Inserts

Grade 303 Stainless Steel Thread Inserts

Refill, From Stainless Steel, M 20 x 1.5 - 3D Size

Refill, From Stainless Steel, BSW 3/8 x 16 - 1D Size

Refill, From Stainless Steel, UNF 7/8 x 14 - 1D Size

Refill, From Stainless Steel, UNF 3/8 x 24 - 1D Size

Refill, From Stainless Steel, UNF No. 4 x 48 - 1D Size

Refill, From Stainless Steel, UNC 1/2 x 13 - 1D Size

Refill, From Stainless Steel, UNC No. 10 x 24 - 1D Size

Refill, From Stainless Steel, M 24 x 1.5 - 3D Size

Refill, From Stainless Steel, M 16 x 1.5 - 3D Size

Refill, From Stainless Steel, BSF 7/16 x 18 - 1D Size

Refill, From Stainless Steel, M 12 x 1.0 - 3D Size

Refill, From Stainless Steel, M 10 x 1.25 - 3D Size

Refill, From Stainless Steel, M 6 x 1.0 - 3D Size

Thread Inserts

Frequently Asked Questions

We are here to help!

Looking for a part not listed here?

Popular Search Queries

Explore More

Select your cookie preferences

Strictly Necessary Cookies

Advertising

Recommendations

Functionality

Analytics

Categories

Brands

Thread Inserts

Grade 18-8 Stainless Steel Thread Inserts Grade 18-8 stainless steel thread inserts, also known as flanged threaded inserts, are small cylindrical metal fasteners used to reinforce and strengthen threaded holes in various materials such as aluminium, magnesium or plastic.

Grade 12L14 Steel Thread Inserts

Press-Fit Inserts

Brass Thread Inserts

Grade C1215 Carbon Steel Thread Inserts

Grade 304 Stainless Steel Thread Inserts

High Speed Steel Thread Inserts

Grade 303 Stainless Steel Thread Inserts

Refill, From Stainless Steel, M 20 x 1.5 - 3D Size

Refill, From Stainless Steel, BSW 3/8 x 16 - 1D Size

Refill, From Stainless Steel, UNF 7/8 x 14 - 1D Size

Refill, From Stainless Steel, UNF 3/8 x 24 - 1D Size

Refill, From Stainless Steel, UNF No. 4 x 48 - 1D Size

Refill, From Stainless Steel, UNC 1/2 x 13 - 1D Size

Refill, From Stainless Steel, UNC No. 10 x 24 - 1D Size

Refill, From Stainless Steel, M 24 x 1.5 - 3D Size

Refill, From Stainless Steel, M 16 x 1.5 - 3D Size

Refill, From Stainless Steel, BSF 7/16 x 18 - 1D Size

Refill, From Stainless Steel, M 12 x 1.0 - 3D Size

Refill, From Stainless Steel, M 10 x 1.25 - 3D Size

Refill, From Stainless Steel, M 6 x 1.0 - 3D Size

Thread Inserts

Frequently Asked Questions

Why are some thread inserts larger in diameter than the tapped hole before installation?

How to choose the length of a helical insert?

How to install a helical thread insert?

How to install a key-locking thread insert?

Can thread inserts be removed once installed?

We are here to help!

Looking for a part not listed here?

Popular Search Queries

Explore More

Grade 18-8 Stainless Steel Thread Inserts
Grade 18-8 stainless steel thread inserts, also known as flanged threaded inserts, are small cylindrical metal fasteners used to reinforce and strengthen threaded holes in various materials such as aluminium, magnesium or plastic.