Thread Inserts | Raptor Supplies United Kingdom
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Thread Inserts

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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...Read more

CHRISLYNN -

Precision Thread Inserts, Small Quantity Packs, UNF

CHRISLYNN 83145A
StyleModelThread SizeInsert LengthDrill SizePrice (inc. VAT)
A831451 1/2-122.25"1 17/32"£48.35
A831411 1/4-121.875"1 9/32"£27.44
A831391 1/8-121.688"1 5/32"£26.44
A831431 3/8-122.062"1 13/32"£47.09
A831361-121.5"1 1/64"£21.37
A831371-141.5"1 1/64"£25.45
A831261/2-200.75"33/64"£21.28
A831171/4-280.375"17/64"£19.83
A831033-560.148"#37£15.66
A831323/4-161.125"49/64"£26.88
A831213/8-240.562"25/64"£22.19
A831054-480.168"#31£16.84
A831305/8-180.938"41/64"£27.45
A831195/16-240.469"21/64"£19.92
A831096-400.207"#25£14.30
A831347/8-141.312"57/64"£20.01
A831237/16-200.656"29/64"£19.65
A831118-360.246"#17£20.73
A831289/16-180.844"37/64"£24.50
A8311310-320.285"13/64"£19.46
A8311512-280.324"15/64"£24.81
HELICOIL -

Screw Thread Inserts

HELICOIL 328-8A
StyleModelThread SizeThread TypeTap StyleOverall LengthThread LengthShank Dia.MaterialThread DirectionPrice (inc. VAT)
A328-81/2-14NPTPipe3 1/2"1 3/8"0.906High Speed SteelRight Hand£130.81
A328-41/4-18NPTPipe2 1/2"1 1/16"11/16"High Speed SteelRight Hand£102.66
A328-21/8-27NPTPipe2 7/16"1 1/16"9/16"High Speed SteelRight Hand£73.63
A328-63/8-18NPTPipe3 1/8"1 3/8"11/16"High Speed SteelRight Hand£168.45
CHRISLYNN -

Precision Spark Plug Inserts

CHRISLYNN 88056A
StyleModelThread SizeInsert LengthDrill SizePrice (inc. VAT)
A880567/8-180.5"57/64"£31.96
A880587/8-180.625"57/64"£32.14
A88032M10 x 10.5"13/32"£92.47
A88034M12 x 1.250.5"31/64"£20.38
A88036M12 x 1.250.75"31/64"£21.10
A88046M14 x 1.250.375"9/16"£21.45
A88047M14 x 1.250.438"9/16"£21.73
A88048M14 x 1.250.5"9/16"£22.00
A88050M14 x 1.250.75"9/16"£22.19
A88051M18 x 1.50.5"23/32"£31.96
CHRISLYNN -

Precision NPT Inserts

CHRISLYNN 88239A
StyleModelThread SizeInsert LengthDrill SizePrice (inc. VAT)
A882391-11 1/2 NPT0.661"1 9/32"£97.79
A882361/2-14 NPT0.534"13/16"£58.85
A882321/4-18 NPT0.394"33/64"£40.66
A882301/8-27 NPT0.273"3/8"£35.40
A882383/4-14 NPT0.553"1 1/64"£73.25
A882343/8-18 NPT0.407"21/32"£55.68
CHRISLYNN -

Precision Inserts, British Thread, BSW

CHRISLYNN 83735A
StyleModelThread SizeInsert LengthDrill SizePrice (inc. VAT)
A837351-8 BSW1.5"1 1/32"£114.35
A837241/2-12 BSW0.75"33/64"£41.07
A837161/4-20 BSW0.375"17/64"£25.02
A837101/8-40 BSW0.188"#30£25.02
A837313/4-10 BSW1.125"25/32"£39.52
A837203/8-16 BSW0.562"25/64"£26.32
A837123/16-24 BSW0.281"#8£25.02
A837295/8-11 BSW0.938"21/32"£35.42
A837185/16-18 BSW0.469"21/64"£23.42
A837337/8-9 BSW1.312"29/32"£64.47
A837227/16-14 BSW0.656"29/64"£29.73
CHRISLYNN -

Precision British Thread Inserts, BSF

CHRISLYNN 83636A
StyleModelThread SizeInsert LengthDrill SizePrice (inc. VAT)
A836361-10 BSF1.5"1 1/32"£99.31
A836261/2-16 BSF0.75"33/64"£62.52
A836171/4-26 BSF0.375"G£43.21
A836323/4-12 BSF1.125"49/64"£72.01
A836213/8-20 BSF0.562"W£53.05
A836305/8-14 BSF0.938"41/64"£86.44
A836195/16-22 BSF0.469"21/64"£39.82
A836347/8-11 BSF1.312"57/64"£72.01
A836237/16-18 BSF0.656"29/64"£54.59
CHRISLYNN -

Precision Inserts, British Thread, BSP

CHRISLYNN 88337A
StyleModelThread SizeInsert LengthDrill SizePrice (inc. VAT)
A883371-11 BSP1.5"1 9/32"£65.97
A883331/2-14 BSP0.75"27/32"£70.90
A883311/4-19 BSP0.375"17/32"£45.04
A883301/8-28 BSP0.188"25/64"£32.48
A883353/4-14 BSP1.125"1 1/16"£55.39
A883323/8-19 BSP0.562"43/64"£66.99
A883345/8-14 BSP0.938"59/64"£70.90
A883367/8-14 BSP1.312"1 13/64"£56.85
CHRISLYNN -

Rock Solid Inserts, UNC, Thin Wall Carbon

CHRISLYNN 65924A
StyleModelInsert LengthDrill SizeExternal Thread SizeInternal Thread SizePrice (inc. VAT)
A659240.5"29/64"1/2-133/8-16£16.12
A659210.31"I5/16-1810-24£15.74
A659220.37"Q3/8-161/4-20£15.66
A659230.43"X7/16-145/16-18£15.85
A659250.56"33/64"9/16-127/16-14£16.89
A659260.62"37/64"5/8-111/2-13£17.47
CHRISLYNN -

Rock Solid Inserts, UNC, Thin Wall, Stainless Steel

CHRISLYNN 76324A
StyleModelInsert LengthDrill SizeExternal Thread SizeInternal Thread SizePrice (inc. VAT)
A763240.5"29/64"1/2-133/8-16£21.31
A763210.31"I5/16-1810-24£10.12
A763220.37"Q3/8-161/4-20£16.80
A763230.43"X7/16-145/16-18£19.72
A763250.56"33/64"9/16-127/16-14-
RFQ
A763260.62"37/64"5/8-111/2-13£26.37
CHRISLYNN -

Rock Solid Inserts, UNC, Heavy Duty, Carbon

CHRISLYNN 65904A
StyleModelInsert LengthDrill SizeExternal Thread SizeInternal Thread SizePrice (inc. VAT)
A659040.5"33/64"9/16-123/8-16£16.12
A659010.31"Q3/8-1610-24£15.74
A659000.31"I5/16-188-32£17.71
A659020.37"X7/16-141/4-20£15.66
A659030.43"29/64"1/2-135/16-18£15.85
A659060.62"45/64"3/4-161/2-13£17.47
A659050.62"37/64"5/8-117/16-14£17.04
A659070.81"45/64"3/4-169/16-12£19.93
A659080.87"53/64"7/8-145/8-11£19.87
A659091.12"1 1/16"1 1/8-123/4-10£22.62
A659101.25"1 3/16"1 1/4-127/8-9£28.16
A659111.37"1 5/16"1 3/8-121-8£42.99
A659131.62"1 7/16"1 1/2-121 1/8-7£84.62
A659141.81"1 9/16"1 5/8-121 1/4-7£110.56
A659162"1 13/16"1 7/8-121 1/2-6£225.45
CHRISLYNN -

Rock Solid Heavy Duty Inserts, UNC, Stainless Steel

CHRISLYNN 76304A
StyleModelInsert LengthDrill SizeExternal Thread SizeInternal Thread SizePrice (inc. VAT)
A763040.5"33/64"9/16-123/8-16£20.34
A763000.312"I5/16-188-32-
RFQ
A763010.312"Q3/8-1610-24-
RFQ
A763020.375"X7/16-141/4-20-
RFQ
A763030.437"29/64"1/2-135/16-18-
RFQ
A763050.625"37/64"5/8-117/16-14-
RFQ
A663060.625"45/64"3/4-161/2-13£23.76
A763060.688"41/64"11/16-111/2-13£27.79
A663070.812"45/64"3/4-169/16-12£35.77
A763070.812"49/64"13/16-169/16-12-
RFQ
A763080.875"53/64"7/8-145/8-11£34.88
A763101.25"1 3/16"1 1/4-127/8-9-
RFQ
A763091.125"1 1/16"1 1/8-123/4-10£44.09
A763111.375"1 5/16"1 3/8-121-8-
RFQ
CHRISLYNN -

Rock Solid Extra-Heavy Duty Inserts, UNC, Carbon

CHRISLYNN 65936A
StyleModelInsert LengthDrill SizeExternal Thread SizeInternal Thread SizePrice (inc. VAT)
A659360.5"37/64"5/8-113/8-16£48.99
A659330.312"X7/16-1410-24£42.90
A659310.312"I5/16-186-32£41.34
A659320.312"Q3/8-168-32£42.07
A659340.375"29/64"1/2-131/4-20£47.10
A659350.437"33/64"9/16-125/16-18£48.52
A659370.625"45/64"3/4-167/16-14£60.54
A659380.688"53/64"7/8-141/2-13£51.57
A659390.812"53/64"7/8-149/16-12£66.30
A659400.875"15/16"1-125/8-11£71.30
A659421.25"1 5/16"1 3/8-127/8-9£119.18
A659411.125"1 3/16"1 1/4-123/4-10£82.38
A659431.375"1 7/16"1 1/2-121-8£228.36
CHRISLYNN -

Rock Solid Extra-Heavy Duty Inserts, UNC, Stainless Steel

CHRISLYNN 76336A
StyleModelInsert LengthDrill SizeExternal Thread SizeInternal Thread SizePrice (inc. VAT)
A763360.5"37/64"5/8-113/8-16-
RFQ
A763310.312"I5/16-186-32-
RFQ
A763320.312"Q3/8-168-32-
RFQ
A763330.312"X7/16-1410-24-
RFQ
A763340.375"29/64"1/2-131/4-20-
RFQ
A763350.437"33/64"9/16-125/16-18-
RFQ
A663370.625"45/64"3/4-167/16-14£93.11
A763370.625"41/64"11/16-117/16-14-
RFQ
A763380.688"49/64"13/16-161/2-13-
RFQ
A663380.688"53/64"7/8-141/2-13£89.82
A763390.812"53/64"7/8-149/16-12-
RFQ
A763400.875"15/16"1-125/8-11-
RFQ
A763421.25"1 5/16"1 3/8-127/8-9-
RFQ
A763411.125"1 3/16"1 1/4-123/4-10-
RFQ
A763431.375"1 7/16"1 1/2-121-8-
RFQ
CHRISLYNN -

Rock Solid Inserts, UNF, Thin Wall Carbon

CHRISLYNN 66124A
StyleModelInsert LengthDrill SizeExternal Thread SizeInternal Thread SizePrice (inc. VAT)
A661240.5"29/64"1/2-133/8-24£16.12
A661210.31"I5/16-1810-32£15.74
A661220.37"Q3/8-161/4-28£15.66
A661230.43"X7/16-145/16-24£15.91
A661250.56"33/64"9/16-127/16-20£17.04
A661260.62"37/64"5/8-111/2-20£17.56
CHRISLYNN -

Rock Solid Inserts, UNF, Thin Wall, Stainless Steel

CHRISLYNN 76524A
StyleModelInsert LengthDrill SizeExternal Thread SizeInternal Thread Size
A765240.5"29/64"1/2-133/8-24
RFQ
A765210.31"I5/16-1810-32
RFQ
A765220.37"Q3/8-161/4-28
RFQ
A765230.43"X7/16-145/16-24
RFQ
A765250.56"33/64"9/16-127/16-20
RFQ
A765260.62"37/64"5/8-111/2-20
RFQ
CHRISLYNN -

Rock Solid Heavy Duty Inserts, UNF, Carbon

CHRISLYNN 66104A
StyleModelInsert LengthDrill SizeExternal Thread SizeInternal Thread SizePrice (inc. VAT)
A661040.5"33/64"9/16-123/8-24£16.12
A661010.312"Q3/8-1610-32£15.74
A661020.375"X7/16-141/4-28£15.66
A661030.437"29/64"1/2-135/16-24£15.91
A661050.625"37/64"5/8-117/16-20£17.04
A661060.625"45/64"3/4-161/2-20£17.56
A661070.812"45/64"3/4-169/16-18£20.68
A661080.875"53/64"7/8-145/8-18£20.05
A661101.25"1 3/16"1 1/4-127/8-14£29.72
A661091.125"1 1/16"1 1/8-123/4-16£22.62
A661111.375"1 5/16"1 3/8-121-12£46.32
A661121.375"1 5/16"1 3/8-121-14£46.32
A661131.625"1 7/16"1 1/2-121 1/8-12£105.69
A661141.812"1 9/16"1 5/8-121 1/4-12£126.65
A661162"1 13/16"1 7/8-121 1/2-12£225.45
CHRISLYNN -

Rock Solid Heavy Duty Inserts, UNF, Stainless

CHRISLYNN 76504A
StyleModelInsert LengthDrill SizeExternal Thread SizeInternal Thread SizePrice (inc. VAT)
A765040.5"33/64"9/16-123/8-24£24.95
A765010.312"Q3/8-1610-32-
RFQ
A765020.375"X7/16-141/4-28-
RFQ
A765030.437"29/64"1/2-135/16-24£21.17
A765050.625"37/64"5/8-117/16-20-
RFQ
A665060.625"45/64"3/4-161/2-20£29.34
A765060.688"41/64"11/16-111/2-20£29.93
A665070.812"45/64"3/4-169/16-18£35.77
A765070.812"49/64"13/16-169/16-18-
RFQ
A765080.875"53/64"7/8-145/8-18-
RFQ
A765101.25"1 3/16"1 1/4-127/8-14£96.22
A765091.125"1 1/16"1 1/8-123/4-16£44.09
A765111.375"1 5/16"1 3/8-121-12-
RFQ
CHRISLYNN -

Rock Solid Extra-Heavy Duty Inserts, UNF, Carbon

CHRISLYNN 66136A
StyleModelInsert LengthDrill SizeExternal Thread SizeInternal Thread SizePrice (inc. VAT)
A661360.5"37/64"5/8-113/8-24£48.99
A661330.312"X7/16-1410-32£42.90
A661340.375"29/64"1/2-131/4-28£47.10
A661350.437"33/64"9/16-125/16-24£48.52
A661370.625"45/64"3/4-167/16-20£60.54
A661380.688"53/64"7/8-141/2-20£51.57
A661390.812"53/64"7/8-149/16-18£66.30
A661400.875"15/16"1-125/8-18£71.30
A661421.25"1 5/16"1 3/8-127/8-14£119.18
A661411.125"1 3/16"1 1/4-123/4-16£82.38
A661431.375"1 5/16"1 1/2-121-12£228.36
CHRISLYNN -

Rock Solid Extra-Heavy Duty Inserts, UNF, Stainless Steel

CHRISLYNN 76536A
StyleModelInsert LengthDrill SizeExternal Thread SizeInternal Thread SizePrice (inc. VAT)
A765360.5"37/64"5/8-113/8-24-
RFQ
A765330.312"X7/16-1410-32-
RFQ
A765340.375"29/64"1/2-131/4-28-
RFQ
A765350.437"33/64"9/16-125/16-24-
RFQ
A665370.625"45/64"3/4-167/16-20£93.11
A765370.625"41/64"11/16-117/16-20-
RFQ
A665380.688"53/64"7/8-141/2-20£89.82
A765380.688"49/64"13/16-161/2-20-
RFQ
A765390.812"53/64"7/8-149/16-18-
RFQ
A765400.875"15/16"1-125/8-18-
RFQ
A765421.25"1 5/16"1 3/8-127/8-14-
RFQ
A765411.125"1 3/16"1 1/4-123/4-16-
RFQ
A765431.375"1 5/16"1 1/2-121-12-
RFQ
CHRISLYNN -

Rock Solid Inserts, Metric, Thin Wall Carbon

CHRISLYNN 65951A
StyleModelInsert LengthDrill SizeExternal Thread SizeInternal Thread SizePrice (inc. VAT)
A659518mmIM8 x 1.25M5 x 0.8£16.66
A6595210mm11/32"M10 x 1.25M6 x 1£17.00
A6615312mm27/64"M12 x 1.25M8 x 1£18.18
A6595312mm27/64"M12 x 1.25M8 x 1.25£17.26
A6615514mm1/2"M14 x 1.5M10 x 1.25£18.41
A6595514mm1/2"M14 x 1.5M10 x 1.5£18.20
A6595616mm37/64"M16 x 1.5M12 x 1.75£19.53
A6615616mm37/64"M16 x 1.5M12 x 1.25£19.76
CHRISLYNN -

Rock Solid Inserts, Metric, Thin Wall, Stainless Steel

CHRISLYNN 76551A
StyleModelInsert LengthDrill SizeExternal Thread SizeInternal Thread SizePrice (inc. VAT)
A765518mmIM8 x 1.25M5 x 0.5-
RFQ
A763518mmIM8 x 1.25M5 x 0.8£20.93
A7635210mm11/32"M10 x 1.25M6 x 1£21.14
A7655210mm11/32"M10 x 1.25M6 x 0.75-
RFQ
A7635312mm27/64"M12 x 1.25M8 x 1.25£23.25
A7655312mm27/64"M12 x 1.25M8 x 1-
RFQ
A7655514mm1/2"M14 x 1.5M10 x 1.25-
RFQ
A7635514mm1/2"M14 x 1.5M10 x 1.5£23.58
A7655616mm37/64"M16 x 1.5M12 x 1.25-
RFQ
A7635616mm37/64"M16 x 1.5M12 x 1.75£25.17
12

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.

Frequently Asked Questions

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.

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