• COMET ST2508-92 Screw
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COMET ST2508-92 Screw

COMET ST2508-92 Screw

The COMET ST2508-92 Screw is a clamping component designed to securely seat carbide inserts within turning and milling tool holders, sourced direct from Korea.

Key features

  • These screws are a critical consumable in CNC machining setups, used by machinists and toolroom technicians to maintain precise insert positioning under the high vibration and cutting forces of metal removal operations
389-0574 MPN: ST2508-92 | PTKA 02508(ST2508-92) | a: 3.8 | b: 1.2 | c: 8 | M: M2.5x0.45 | Wrench: T8 | Related product No.: PTKA 02508 | A(˚): 92
389-0583 MPN: ST307-92 | PTKA 0307(ST307-92) | a: 4.8 | b: 1.1 | c: 7 | M: M3x0.5 | Wrench: T8 | Related product No.: PTKA 0307 | A(˚): 92
389-0592 MPN: ST3510-92 | PTKA 03510(ST3510-92) | a: 5 | b: 1.8 | c: 10 | M: M3.5x0.6 | Wrench: T15 | Related product No.: PTKA 03510 | A(˚): 92
389-0626 MPN: ST408-86 | PTKA 0408(ST408-86) | a: 5.5 | b: 0.8 | c: 8 | M: M4x0.7 | Wrench: T15 | Related product No.: PTKA 0408 | A(˚): 86
389-0671 MPN: ST412-92 | PTKA 0412(ST412-92) | a: 5.9 | b: 2 | c: 12 | M: M4x0.7 | Wrench: T15 | Related product No.: PTKA 0412 | A(˚): 92
389-0732 MPN: ST408-43 | ETNA 0408(ST408-43) | a: 5.1 | b: 0.6 | c: 8 | M: M4x0.7 | Wrench: T15 | Related product No.: FS 319/ETNA 0408 | A(˚): 43
389-0750 MPN: ST511-43 | ETNA 0511(ST511-43K) | a: 6.5 | b: 0.5 | c: 11 | M: M5x0.8 | Wrench: T20 | Related product No.: FS243 | A(˚): 43
389-0811 MPN: ST4108-60 | FTNB 0411(ST4108-60) | a: 5.5 | b: 0.6 | c: 10.8 | M: M4x0.7 | Wrench: T15 | Related Product No.: FTNB 0411 | A(˚): 60
389-0820 MPN: ST45095-55 | FTNC 04509(ST45095-55) | a: 6.8 | b: 0.7 | c: 9.5 | M: M4.5x0.75 | Wrench: T20 | Related product No.: FTNA 04509 | A(˚): 55
389-0839 MPN: ST45115-55 | FTNC 04511(ST45115-55) | a: 6.8 | b: 0.7 | c: 11.5 | M: M4.5x0.75 | Wrench: T20 | Related product No.: FTNC 04511 | A(˚): 55
389-1962 MPN: ST515-43 | FS242(ST515-43) | a: 6.4 | b: 0.8 | c: 15 | M: M5x0.8 | Wrench: T20 | Related product No.: FS 242 | A(˚): 43
389-2952 MPN: ST4153-91FM | PTKA 0415F(ST4153-91FM) | a: 6.5 | b: 1.2 | c: 15.3 | M: M4x0.5 | Wrench: T15 | Related product No.: PTKA 0415F | A(˚): 91
389-2970 MPN: ST45105-90M | PTKA 04511(ST45105-90M) | a: 6.3 | b: 1.8 | c: 10.5 | M: M4.5x0.75 | Wrench: T20 | Related product No.: PTKA 04511 | A(˚): 90
389-2989 MPN: ST511-90 | PTKA 0511(ST511-90) | a: 7.2 | b: 0.7 | c: 11 | M: M5x0.8 | Wrench: T20 | Related product No.: PTKA 0511 | A(˚): 82
389-2998 MPN: ST513-82HM | PTKA 0513(ST513-82HM) | a: 7.2 | b: 1.2 | c: 13 | M: M5x0.8 | Wrench: T20 | Related product No.: PTKA 0513 | A(˚): 82
389-3003 MPN: ST620-43M | ETKA 0620(ST620-43M) | a: 8.8 | b: 0.8 | c: 20 | M: M6x1.0 | Wrench: T25 | Related product No.: ETKA 0620 | A(˚): 43
Carbide Inserts & HoldersCOMET
16 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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COMET ST2508-92 Screw

Brand COMET·Carbide Inserts & Holders

Available part numbers (16)

389-0574, 389-0583, 389-0592, 389-0626, 389-0671, 389-0732, 389-0750, 389-0811, 389-0820, 389-0839 + 6 more — see full table ↓

How to order

Send the COMET part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

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Product codes & specifications
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Product codeSpec
389-0574MPN: ST2508-92 | PTKA 02508(ST2508-92) | a: 3.8 | b: 1.2 | c: 8 | M: M2.5x0.45 | Wrench: T8 | Related product No.: PTKA 02508 | A(˚): 92
389-0583MPN: ST307-92 | PTKA 0307(ST307-92) | a: 4.8 | b: 1.1 | c: 7 | M: M3x0.5 | Wrench: T8 | Related product No.: PTKA 0307 | A(˚): 92
389-0592MPN: ST3510-92 | PTKA 03510(ST3510-92) | a: 5 | b: 1.8 | c: 10 | M: M3.5x0.6 | Wrench: T15 | Related product No.: PTKA 03510 | A(˚): 92
389-0626MPN: ST408-86 | PTKA 0408(ST408-86) | a: 5.5 | b: 0.8 | c: 8 | M: M4x0.7 | Wrench: T15 | Related product No.: PTKA 0408 | A(˚): 86
389-0671MPN: ST412-92 | PTKA 0412(ST412-92) | a: 5.9 | b: 2 | c: 12 | M: M4x0.7 | Wrench: T15 | Related product No.: PTKA 0412 | A(˚): 92
389-0732MPN: ST408-43 | ETNA 0408(ST408-43) | a: 5.1 | b: 0.6 | c: 8 | M: M4x0.7 | Wrench: T15 | Related product No.: FS 319/ETNA 0408 | A(˚): 43
389-0750MPN: ST511-43 | ETNA 0511(ST511-43K) | a: 6.5 | b: 0.5 | c: 11 | M: M5x0.8 | Wrench: T20 | Related product No.: FS243 | A(˚): 43
389-0811MPN: ST4108-60 | FTNB 0411(ST4108-60) | a: 5.5 | b: 0.6 | c: 10.8 | M: M4x0.7 | Wrench: T15 | Related Product No.: FTNB 0411 | A(˚): 60
389-0820MPN: ST45095-55 | FTNC 04509(ST45095-55) | a: 6.8 | b: 0.7 | c: 9.5 | M: M4.5x0.75 | Wrench: T20 | Related product No.: FTNA 04509 | A(˚): 55
389-0839MPN: ST45115-55 | FTNC 04511(ST45115-55) | a: 6.8 | b: 0.7 | c: 11.5 | M: M4.5x0.75 | Wrench: T20 | Related product No.: FTNC 04511 | A(˚): 55
389-1962MPN: ST515-43 | FS242(ST515-43) | a: 6.4 | b: 0.8 | c: 15 | M: M5x0.8 | Wrench: T20 | Related product No.: FS 242 | A(˚): 43
389-2952MPN: ST4153-91FM | PTKA 0415F(ST4153-91FM) | a: 6.5 | b: 1.2 | c: 15.3 | M: M4x0.5 | Wrench: T15 | Related product No.: PTKA 0415F | A(˚): 91
389-2970MPN: ST45105-90M | PTKA 04511(ST45105-90M) | a: 6.3 | b: 1.8 | c: 10.5 | M: M4.5x0.75 | Wrench: T20 | Related product No.: PTKA 04511 | A(˚): 90
389-2989MPN: ST511-90 | PTKA 0511(ST511-90) | a: 7.2 | b: 0.7 | c: 11 | M: M5x0.8 | Wrench: T20 | Related product No.: PTKA 0511 | A(˚): 82
389-2998MPN: ST513-82HM | PTKA 0513(ST513-82HM) | a: 7.2 | b: 1.2 | c: 13 | M: M5x0.8 | Wrench: T20 | Related product No.: PTKA 0513 | A(˚): 82
389-3003MPN: ST620-43M | ETKA 0620(ST620-43M) | a: 8.8 | b: 0.8 | c: 20 | M: M6x1.0 | Wrench: T25 | Related product No.: ETKA 0620 | A(˚): 43

Need a different model, or a part not listed here? Send us your parts list →

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