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1/4-20 Machine Screws
Machine Screws are uniformly threaded screws which are designed to be screwed into pre-drilled, pre-threaded holes, or in conjunction with a nut, usually with a diameter less than 1/4inch. Larger diameter machine screws with a hex head are usually referred to as machine bolts.
184,694 Machine Screw, showing 200, (click on any line for more information)
| Search Results Sponsored by ISSCO, Inc., your source for Machine Screws. For more results, visit isscoinc.com | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| ISSCO | MO | Machine Screw | Steel | Zinc/Green | 1/4-20 x 1 | slotted hex washer | 2050 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 1/4 | slotted truss | 3175 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 1/4 | slotted fillister | 1000 |
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| ISSCO | MO | Machine Screw | Steel | Plain | 1/4-20 x 4 | slotted flat | 1830 |
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| Cal Fastenrs | CA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 2 1/2 | 1/4-20 x 2 1/2 phillips pan m/s trivalent zinc phil pan | 400 |
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| NAPPCO | TX | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3/4 | rd slotted m/s steel zinc pltd 1/4-20x3/4 (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) | 174 |
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| NAPPCO | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 1/2 | hexindentedwash m/s 18-8 s/s 1/4-20x1/2 (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) | 41050 |
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| NAPPCO | TX | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 5/8 | 1/4-20x5/8 stl zp hwh m/s ind serrated (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) (6-MACHINE SCREWS - HEX) | 2470 |
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| NAPPCO | TX | Machine Screw | Steel | Black Oxide | 1/4-20 x 1 1/4 | 1/4-20x1 1/4 m/s phil/pan black ox rohs (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) | 1000 |
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| NAPPCO | TX | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1/2 | 1/4-20 x 1/2 phil fl ms zp rohs (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) (199-MISCELLANEOUS HARDWARE) | 2380 |
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| NAPPCO | TX | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 2 1/2 | flat slotted m/s stl zinc 1/4-20x2-1/2 (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) | 600 |
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| NAPPCO | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 2 1/4 | phil pan hd m/s s/s 18-8 1/4-20x2-1/4 (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) (7-MACHINE SCREW - PHILLIPS) | 416 |
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| ASMC | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3/4 | (ft) coarse slotted binder undercut low carb zp | 2,400 |
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| ASMC | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3/4 | (ft) coarse hex washer low carb zp | 2,650 |
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| ASMC | IL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 1 | (ft) coarse phil truss ss18-8 | 1,120 |
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| ASMC | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 1/2 | (ft) coarse phil flat low carb zp | 1,000 |
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| ASMC | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 2 1/4 | (ft) coarse phil flat low carb zp | 500 |
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| ASMC | IL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 2 1/2 | (ft) coarse phil truss ss18-8 | 100 |
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| Global | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Passivated | 1/4-20 x 5/8 | phil flat 82d m/s 18-8 ss passivate passivate | 700 |
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| NAPPCO | TX | Machine Screw | Steel | Plain | 1/4-20 x 3/4 | 1/4-20x3/4 button6lobesoc m/s w/reject (170-TAMPER-PROOF (ALL ITEMS)) (170-TAMPER-PROOF (ALL ITEMS)) (170-TAMPER-PROOF (ALL ITEMS)) (170-TAMPER-PROOF (ALL ITEMS)) (170-TAMPER-PROOF (ALL ITEMS)) (170-TAMPER-PROOF (ALL ITEMS)) (170-TAMPER-PROOF (ALL ITEMS)) (170-TAMPER-PROOF (ALL ITEMS)) (170-TAMPER-PROOF (ALL ITEMS)) (170-TAMPER-PROOF (ALL ITEMS)) (170-TAMPER-PROOF (ALL ITEMS)) | 1 |
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| NAPPCO | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3/4 | fillister slotted m/s s/s 18-8 1/4-20x3/4 (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) | 473 |
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| NAPPCO | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 7/8 | truss slotted m/s s/s 18-8 1/4-20x7/8 (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) (8-MACHINE SCREWS - SLOTTED) | 40 |
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| Northern | MN | Machine Screw | Steel | Black Oxide | 1/4-20 x 5/8 | 1/4-20x5/8 mach pn ph black rie4037a | 1950 |
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| ISSCO | MO | Machine Screw | Aluminum | Plain | 1/4-20 x 2 | mach slotted flat | 400 |
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| ISSCO | MO | Machine Screw | Steel | Black Oxide | 1/4-20 x 1 3/4 | mach phil flat | 5760 |
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| ISSCO | MO | Machine Screw | Steel | Black Oxide | 1/4-20 x 1 1/4 | mach phillips flat | 7784 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 1/4 | mach phillips flat z/p | 19430 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Black | 1/4-20 x 2 1/2 | mach phil flat blk | 7527 |
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| ISSCO | MO | Machine Screw | Steel | Black Oxide | 1/4-20 x 2 1/4 | mach phillips flat | 18570 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 1/2 | mach phillips oval z/p | 2300 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 | mach slotted binding z/p | 7400 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 1/4 | mach slotted flat z/p | 12300 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 2 | mach slotted flat z/p | 12100 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Yellow | 1/4-20 x 2 | mach slotted flat | 17000 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1/2 | mach slotted flat z/p | 36600 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 7/8 | mach slotted flat z/p | 5880 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 1/8 | mach slotted flat z/p | 3500 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Black | 1/4-20 x 3/4 | mach phillips pan black | 2490 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3/8 | mach slotted flat u/cut z/p | 5100 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Black | 1/4-20 x 2 | mach phillips pan black | 2000 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3/4 | mach slotted fillister z/p | 5600 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1/4 | mach slotted fillister z/p | 2206 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 2 | mach phillips pan z/p | 15780 |
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| NAPPCO | TX | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 5/8 | philtruss m/s steelzincpltd 1/4-20x5/8 | 1718 |
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| FMP | MA | Machine Screw | Steel | Plain | 1/4-20 x 1 | slotted fillister | 0 |
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| NAPPCO | TX | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 2 1/2 | phil pan m/s steelzincpltd 1/4-20x2-1/2 | 729 |
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| NAPPCO | TX | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1/2 | flat6lobe m/s stl zp undercut 1/4-20x1/2 | 3469 |
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| NAPPCO | TX | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 2 | 1/4-20 x 2 phil flat ms zp rohs | 2300 |
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| NAPPCO | TX | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 1/2 | flat 6-lobe m/s steel zp 1/4-20x1-1/2 | 48 |
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| NAPPCO | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 7/16 | truss no drive m/s s/s 18-8 1/4-20x7/16 | 980 |
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| CNB | IL | Machine Screw | Grade 2 | Plain | 1/4-20 x 1 | slotted round head machine gr.2 | 1000 |
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| CNB | IL | Machine Screw | Grade 2 | Plain | 1/4-20 x 1 1/4 | slotted round machine gr.2 | 2238 |
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| CNB | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 1/4 | slotted flat head machine ft z/p | 50 |
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| CNB | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 | torx pan , | 988 |
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| CNB | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 1/2 | phillips round head | 554 |
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| CNB | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 1/2 | phillips truss head | 1000 |
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| CNB | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 2 | phillips truss head | 616 |
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| CNB | IL | Machine Screw | Grade 2 | Plain | 1/4-20 x 2 3/4 | slotted round machine gr.2 | 975 |
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| CNB | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 | slotted round machine z/p | 377 |
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| CNB | IL | Machine Screw | Grade 2 | Zinc/Clear | 1/4-20 x 1/4 | slotted pan head machine gr.2 z/p | 1963 |
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| CNB | IL | Machine Screw | Grade 2 | Plain | 1/4-20 x 3/8 | slotted round head machine ft gr.2 | 1920 |
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| CNB | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1/2 | phillips pan head , plate | 1805 |
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| CNB | IL | Machine Screw | Grade 2 | Zinc/Clear | 1/4-20 x 1/2 | slotted round machine gr.2 z/p | 2668 |
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| CNB | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1/2 | slotted flat head machine ft z/p | 56 |
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| CNB | IL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3/4 | phillips flathead , 18-8 ss | 10 |
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| CNB | IL | Machine Screw | Grade 2 | Plain | 1/4-20 x 3/4 | slotted round head machine gr.2 | 595 |
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| CNB | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3/4 | phillips pan head | 500 |
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| CNB | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3/4 | slotted flat head machine ft z/p | 50 |
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| SASCO | OR | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3 | phil oval m/s 18-8 sst | 98 |
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| SASCO | OR | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3/8 | phil flat 82d undercut m/s 18-8 sst | 1,048 |
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| FMP | MA | Machine Screw | Brass | Plain | 1/4-20 x 1/4 | slotted round |
| |
| FMP | MA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1/4 | slotted pan | 13800 |
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| FMP | MA | Machine Screw | Brass | Plain | 1/4-20 x 1/4 | slotted round washer | 10830 |
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| FMP | MA | Machine Screw | Nylon (Polyamide) | Plain | 1/4-20 x 1/4 | slotted binding | 200 |
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| FMP | MA | Machine Screw | Brass | Plain | 1/4-20 x 5/16 | slotted round | 5300 |
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| FMP | MA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 5/16 | slotted fillister | 1600 |
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| FMP | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 1/4 | slotted fillister | 127 |
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| FMP | MA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 5/16 | slotted round | 5000 |
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| FMP | MA | Machine Screw | Steel | Zinc/Yellow | 1/4-20 x 5/16 | slotted round | 2500 |
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| FMP | MA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 5/16 | slotted binding | 3000 |
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| FMP | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 5/16 | slotted undercut flat | 330 |
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| FMP | MA | Machine Screw | Nylon (Polyamide) | Plain | 1/4-20 x 5/16 | slotted binding | 210 |
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| FMP | MA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3/8 | slotted fillister | 2600 |
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| FMP | MA | Machine Screw | Brass | Plain | 1/4-20 x 3/8 | slotted round | 8100 |
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| FMP | MA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3/8 | phillips round | 4600 |
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| FMP | MA | Machine Screw | Brass | Plain | 1/4-20 x 3/8 | slotted flat | 700 |
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| FMP | MA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3/8 | slotted pan with nylon pellet | 1900 |
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| FMP | MA | Machine Screw | Brass | Nickel | 1/4-20 x 3/8 | slotted flat | 5700 |
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| FMP | MA | Machine Screw | Steel | Black Oxide | 1/4-20 x 3/8 | phillips pan | 400 |
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| FMP | MA | Machine Screw | Nylon (Polyamide) | Plain | 1/4-20 x 1/2 | slotted round | 350 |
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