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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.
186,225 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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| Buy Machine Screws from one of our FCH Network Members | ||||||||
| Cal Fastenrs | CA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 | 1/4-20x3 slotted pan m/s plated slotted pan ms slotted pan ms | 260 |
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| MESAFAST | CA | Machine Screw | Brass | Plain | 1/4-20 x 1 | slotted round m/s | 100.0 |
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| MESAFAST | CA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 | combo truss mach | 75.0 |
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| MESAFAST | CA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3/8 | slotted round mach | 2,000.0 |
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| ASMC | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 1/2 | (ft) coarse slotted fillister low carb zp | 1,850 |
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| ASMC | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 1/4 | (ft) coarse phil round low carb zp | 1,890 |
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| ASMC | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 2 1/2 | (ft) coarse phil truss low carb zp | 400 |
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| ASMC | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 | (ft) coarse phil flat low carb zp | 804 |
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| MTP | CA | Machine Screw | Steel | Plain | 1/4-20 x 1 | 1/4-20 x 1 st/zn phil truss m/s | stock |
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| Liberty | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3/4 | phil pan rohs | 1,300 |
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| Liberty | IL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 5/8 | phil pan 18-8 s/s | 350 |
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| Liberty | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 4 | phil pan rohs | 690 |
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| Liberty | IL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 1/2 | slotted round 18-8 s/s | 68 |
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| Liberty | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1/2 | unslotted indented hex washer m/s w/serration | 720 |
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| Alma Bolt | MI | Machine Screw | Steel | Plain | 1/4-20 x 1/4 | truss phillips | 222 |
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| Alma Bolt | MI | Machine Screw | Steel | Plain | 1/4-20 x 1 | round slotted | 650 |
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| Alma Bolt | MI | Machine Screw | Silicon Bronze | Plain | 1/4-20 x 1 1/2 | silc brnz round slotted ms | 8600 |
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| Global | CA | Machine Screw | 316, 317, A4 Stainless | Plain | 1/4-20 x 1/2 | phil pan m/s 316 stainless | 750 |
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| MidStates | MI | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 2 1/4 | 1/4-20 x 2 1/4 phil oval m/s znc | 6 |
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| Northern | MN | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1/2 | m/s flat slotted | 3000 |
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| Northern | MN | Machine Screw | Steel | Zinc/Yellow | 1/4-20 x 1/2 | mach phillips pan | 1000 |
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| Northern | MN | Machine Screw | Steel | Black Oxide | 1/4-20 x 1 | mach phillips pan black rie4037a | 2199 |
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| Northern | MN | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 2 | 1/4-20x2 mach ov ph pk zc | 1298 |
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| Northern | MN | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3/4 | 1/4-20x3/4 mach ov ph pk zc | 36 |
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| Northern | MN | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 2 | 1/4-20x2 mach ov sl zc j | 200 |
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| Northern | MN | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3/4 | 1/4-20x3/4 mach ov sl pk zc | 1200 |
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| Northern | MN | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 1/4 | 1/4-20x1-1/4 mach ov sl pk zc | 338 |
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| Northern | MN | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1/2 | 1/4-20x1/2 mach ov sl pk zc | 294 |
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| Northern | MN | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 | 1/4-20x1 mach ov sl pk zc | 423 |
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| Northern | MN | Machine Screw | Steel | Zinc/Yellow | 1/4-20 x 5/8 | m/s round phillips | 1000 |
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| Northern | MN | Machine Screw | Steel | Zinc/Yellow | 1/4-20 x 1 1/4 | m/s round phillips | 88 |
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| Northern | MN | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1/4 | m/s round slotted pk zc | 29 |
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| System 22 | PA | Machine Screw | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | 1/4-20 x 1 | slotted round monel 400 | 1372 |
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| System 22 | PA | Machine Screw | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | 1/4-20 x 1 7/8 | slotted round monel 400 | 5420 |
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| System 22 | PA | Machine Screw | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | 1/4-20 x 2 3/4 | slotted round monel 400 | 1216 |
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| System 22 | PA | Machine Screw | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | 1/4-20 x 3/4 | slotted round monel 400 | 8835 |
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| System 22 | PA | Machine Screw | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | 1/4-20 x 3 | slotted round monel 400 | 1095 |
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| System 22 | PA | Machine Screw | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | 1/4-20 x 2 1/4 | slotted round monel 400 | 4580 |
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| System 22 | PA | Machine Screw | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | 1/4-20 x 1 3/4 | slotted round monel 400 | 8450 |
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| System 22 | PA | Machine Screw | Brass | Plain | 1/4-20 x 1 1/2 | 464 naval | 77 |
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| System 22 | PA | Machine Screw | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | 1/4-20 x 1 1/4 | slotted round monel 400 | 5336 |
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| System 22 | PA | Machine Screw | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | 1/4-20 x 1/2 | slotted flat . nicu 400 | 940 |
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| System 22 | PA | Machine Screw | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | 1/4-20 x 1 1/2 | slotted round monel 400 | 8677 |
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| UltraFast | WA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 1 | pan phil ms | inquire |
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| UltraFast | WA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3/4 | round phil ms | inquire |
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| API | IA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 5/8 | phil pan 18-8 304 | 1,717 |
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| API | IA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 5/8 | slotted round ms zncl jds | 52 |
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| API | IA | Machine Screw | Steel | Zinc/Black | 1/4-20 x 1/2 | phil pan black | 2,623 |
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| API | IA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 5/8 | slotted phillips ms zncl jds | 842 |
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| API | IA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x | slotted round ms 1/4-20x1/2 zncl jds | 18,374 |
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| API | IA | Machine Screw | Steel | Plain | 1/4-20 x 4 | slotted round hd | 6,398 |
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| API | IA | Machine Screw | Steel | Zinc/Black | 1/4-20 x 1 1/4 | phil pan black | 2,222 |
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| MMF | MI | Machine Screw | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | 1/4-20 x 5/8 | 1/4-20 x 5/8 slot flat machine screw nicu 400 ff-s-92 usa b18.6.3 | 374 |
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| MMF | MI | Machine Screw | Aluminum | Anodized | 1/4-20 x 7/8 | 1/4-20 x 7/8 phil flat 6061 al anodized machine screw usa b18.6.3 | 402 |
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| MMF | MI | Machine Screw | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | 1/4-20 x 1/2 | 1/4-20 x 1/2 slot round machine screw nicu 400 ff-s-92 b18.6.3 | 470 |
|
| MMF | MI | Machine Screw | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | 1/4-20 x 5/8 | 1/4-20 x 5/8 slot flat machine screw nicu 400 ff-s-92 usa b18.6.3 | 374 |
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| MMF | MI | Machine Screw | Aluminum | Anodized | 1/4-20 x 7/8 | 1/4-20 x 7/8 phil flat 6061 al anodized machine screw usa b18.6.3 | 402 |
|
| MMF | MI | Machine Screw | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | 1/4-20 x 1/2 | 1/4-20 x 1/2 slot flat nicu 400 machine screw ff-s-92 patch lock b18.6.3 | 965 |
|
| MMF | MI | Machine Screw | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | 1/4-20 x 1/2 | 1/4-20 x 1/2 slot flat nicu 400 machine screw ff-s-92 patch lock usa b18.6.3 | 58 |
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| MMF | MI | Machine Screw | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | 1/4-20 x 1/2 | 1/4-20 x 1/2 phil flat nicu 400 machine screw ff-s-92 usa b18.6.3 | 489 |
|
| MMF | MI | Machine Screw | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | 1/4-20 x 3/4 | 1/4-20 x 3/4 slot flat nicu 400 machine screw ff-s-92 usa b18.6.3 | 260 |
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| MMF | MI | Machine Screw | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | 1/4-20 x 5/8 | 1/4-20 x 5/8 slot flat machine screw nicu 400 ff-s-92 usa b18.6.3 | 374 |
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| MMF | MI | Machine Screw | Aluminum | Anodized | 1/4-20 x 7/8 | 1/4-20 x 7/8 phil flat 6061 al anodized machine screw usa b18.6.3 | 402 |
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| ACCURATE | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 | truss slotted | 700 |
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| ACCURATE | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 5/16 | truss phillips | 140,000 |
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| ACCURATE | IL | Machine Screw | Steel | Nickel | 1/4-20 x 1 1/2 | oval phillips | 55,000 |
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| ACCURATE | IL | Machine Screw | Steel | Plain | 1/4-20 x 4 | round slotted fulltd | 4,000 |
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| ACCURATE | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1/2 | indented hex washer unslotted | 125,000 |
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| ACCURATE | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 | fillister phillips | 100,000 |
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| ACCURATE | IL | Machine Screw | Steel | Black Oxide | 1/4-20 x 2 | round phillips blk ox | 17,000 |
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| ACCURATE | IL | Machine Screw | Nylon (Polyamide) | Plain | 1/4-20 x 1 | flat slotted | 1,500 |
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| ACCURATE | IL | Machine Screw | Steel | Black Oxide | 1/4-20 x 1 1/4 | round phillips blk ox | 25,000 |
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| ACCURATE | IL | Machine Screw | Steel | Plain | 1/4-20 x 5 1/2 | round slotted | 500 |
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| ACCURATE | IL | Machine Screw | Brass | Plain | 1/4-20 x 5 | flat slotted f/t | 1,000 |
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| ACCURATE | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 5/8 | oval phillips | 100,000 |
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| ACCURATE | IL | Machine Screw | Steel | Nickel | 1/4-20 x 3/8 | truss slotted | 7,000 |
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| ACCURATE | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1 1/4 | oval phillips | 100,000 |
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| ACCURATE | IL | Machine Screw | Brass | Plain | 1/4-20 x 1/2 | pan slotted | 25,000 |
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| ACCURATE | IL | Machine Screw | Steel | Black Oxide | 1/4-20 x 1/2 | round slotted blk ox | 30,000 |
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| ACCURATE | IL | Machine Screw | Steel | Black Oxide | 1/4-20 x 5/8 | truss phillips blk ox | 50,000 |
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| ACCURATE | IL | Machine Screw | Steel | Nickel | 1/4-20 x 1 | flat slotted | 5,000 |
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| ACCURATE | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 1/2 | flat slotted undercut | 145,000 |
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| ACCURATE | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 | truss phillips | 110,000 |
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