#4-40 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.
185,546 Machine Screw, showing 200, (click on any line for more information)
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Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
ISSCO | MO | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/8 | slotted fillister w/ 1/32 drilled head 18-8 stainless | 1336 |
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ISSCO | MO | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/2 | phillips pan 18-8 stainless | 20200 |
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ISSCO | MO | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 5/16 | phillips pan 18-8 stainless | 12600 |
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ISSCO | MO | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/2 | torx pan patchlok | 9280 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/2 | #4-40x1/2 phil flat m/s 18-8 s/s b18.6.3 () () () | 2520 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/4 | #4-40x1/4 phil flat undercut m/s 18-8 s/s b18.6.3 () () () | 8930 |
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GLF | OH | Machine Screw | Steel | Zinc/Clear | #4-40 x 1 | #4-40x1 phil pan m/s stl zc b18.6.3 () () () | 8889 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1 | #4-40x1 phil flat 100-deg m/s 18-8 s/s b18.6.3 () () () | 1697 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/4 | #4-40x1/4 phil flat m/s 18-8 s/s b18.6.3 () () () | 4000 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/4 | #4-40x1/4 phil flat 100-deg m/s 18-8 s/s w/patch b18.6.3 () () () | 140 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/2 | #4-40x1/2 slotted flat m/s 18-8 s/s b18.6.3 () () () | 2182 |
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GLF | OH | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/2 | #4-40x1/2 phil pan m/s stl zc b18.6.3 () () () | 704 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1 | #4-40x1 phil pan m/s 18-8 s/s b18.6.3 () () () | 3022 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/4 | #4-40x1/4 phil pan m/s 18-8 s/s b18.6.3 () () () | 22829 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/4 | #4-40x1/4 phil flat 100-deg m/s 18-8 s/s b18.6.3 () () () | 447 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/2 | #4-40x1/2 phil pan m/s 18-8 s/s b18.6.3 () () () | 4948 |
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GLF | OH | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/4 | #4-40x1/4 slotted round m/s stl zc b18.6.3 () () () | 710 |
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GLF | OH | Machine Screw | Steel | Zinc/Yellow | #4-40 x 1/4 | #4-40x1/4 phil pan m/s stl zy b18.6.3 () () () | 193 |
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GLF | OH | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/4 | #4-40x1/4 phil pan m/s stl zc b18.6.3 () () () | 1995 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/4 | #4-40x1/4 phil truss m/s 18-8 s/s b18.6.3 () () () | 500 |
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GLF | OH | Machine Screw | Steel | Plain | #4-40 x 1/4 | #4-40x1/4 slotted flat m/s nyl b18.6.3 () () () | 1623 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/4 | #4-40x1/4 slotted pan m/s 18-8 s/s b18.6.3 () () () | 55 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1 1/2 | #4-40x1-1/2 slotted pan m/s 18-8 s/s b18.6.3 () () () | 500 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1 1/2 | #4-40x1-1/2 slotted fillister m/s 18-8 s/s b18.6.3 () () () | 1183 |
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CIF | IL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/8 | #4-40x3/8 phillips pan head machine screw 18-8 s/s steel usa compliant (1330) (1330) (1148) () | 1148 |
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CIF | IL | Machine Screw | Steel | Black Oxide | #4-40 x 3/8 | #4-40x3/8 hex drive button head machine screw steel black oxide with scotchgrip patch per print (7703) (7703) (7750) () | 7750 |
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CIF | IL | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/2 | #4-40x1/2 phillips pan head machine screw steel plated per zn6a (zinc trivalent) (15740) (15740) (15580) () | 15580 |
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ASMC | IL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/2 | (ft) coarse phil flat ss18-8 | 4,977 |
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Empire | WA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 5/16 | 4-40 x 5/16 pan phil m/s stainless steel | 5000 |
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CIF | IL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/4 | #4-40x3/4 phillips pan head machine screw 18-8 s/s steel domestic with certs (500) (500) | 500 |
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SunPack | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/4 | 18-8 ss flat slotted | 75 |
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SunPack | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/8 | 18-8 ss flat slotted | 75 |
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SunPack | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/8 | 18-8 ss pan phillips | 75 |
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SunPack | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/16 | 18-8 ss pan phillips | 75 |
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SunPack | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/16 | 18-8 ss flat slotted | 75 |
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SunPack | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/4 | 18-8 ss pan phillips | 75 |
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SIS | AZ | Machine Screw | Nylon (Polyamide) | Plain | #4-40 x 3/8 | 4-40x3/8 slotted flat head machine screw nylon 6/6 plain | 500 |
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SIS | AZ | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 7/8 | 4-40 x 7/8 phillips flat head 100 deg 18-8 304 steel ms24693-c9 K2124693-C9 | 2670 |
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SIS | AZ | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Black Oxide | #4-40 x 5/8 | screw ms24693-7b 304ss | 80 |
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SIS | AZ | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Passivated | #4-40 x 1/4 | 4-40 x .250 phillips flat head 100 degree ms 18-8 304 steel ms24693 304ss MS24693C2 | 250 |
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SIS | AZ | Machine Screw | Steel | Cadmium/Yellow | #4-40 x 5/16 | 4-40 x 5/16 fully threaded flat 100 deg phil dr c/s m/s low c/s cad ii MS24693S3 | 100 |
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SIS | AZ | Machine Screw | Steel | Cadmium/Yellow | #4-40 x 3/8 | 4-40 x 3/8 phillips 100 deg flat m/s steel cad ii MS24693S4 | 100 |
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SIS | AZ | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Passivated | #4-40 x 7/8 | 4-40 x 7/8 phillips pan head machine screw ss ms51957-20 304ss MS51957_20 | 1600 |
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SIS | AZ | Machine Screw | Steel | Plain | #4-40 x 5/16 | 4-40 x 5/16 phillips flat 100 deg locking screw ss nas1189 NAS1189E04P5B | 655 |
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SIS | AZ | Machine Screw | Steel | Cadmium | #4-40 x 5/16 | 4-40 x 5/16 phillips flat head 100 degree steel cad nas514 NAS514P440_5P | 196 |
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SIS | AZ | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Black Oxide | #4-40 x 1/8 | 4-40x1/8 phillips pan head machine screw 18-8 s/s steel blk oxide | 1800 |
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GUIDON | TX | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/4 | PHILLIPS PAN LOCKING PATCH | 10,000 |
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Empire | WA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 5/16 | 4-40 x 5/16 pan phil m/s 18-8 ss w/ nylon patch | 3000 |
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THRDFAST | FL | Machine Screw | Steel | Zinc/Clear | #4-40 x 1 | slotted round m/s b18.6.3 | 7,950 |
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THRDFAST | FL | Machine Screw | Steel | Zinc/Clear | #4-40 x 5/16 | phil pan m/s b18.6.3 | 5,513 |
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THRDFAST | FL | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/4 | slotted pan m/s b18.6.3 | 4,960 |
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THRDFAST | FL | Machine Screw | Steel | Zinc/Clear | #4-40 x 1 1/2 | slotted round m/s b18.6.3 | 3,200 |
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THRDFAST | FL | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/4 | phil pan m/s b18.6.3 | 2,726 |
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THRDFAST | FL | Machine Screw | Steel | Zinc/Clear | #4-40 x 3/4 | slotted pan m/s b18.6.3 | 2,600 |
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THRDFAST | FL | Machine Screw | Steel | Zinc/Clear | #4-40 x 2 | slotted round m/s b18.6.3 | 2,300 |
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THRDFAST | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/16 | 18-8 ss slotted truss m/s b18.6.3 | 1,730 |
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THRDFAST | FL | Machine Screw | Brass | Plain | #4-40 x 1/2 | slotted round m/s b18.6.3 | 1,450 |
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THRDFAST | FL | Machine Screw | Steel | Zinc/Clear | #4-40 x 7/16 | phil pan m/s b18.6.3 | 1,300 |
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THRDFAST | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/16 | 18-8 ss slotted round m/s b18.6.3 | 1,332 |
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THRDFAST | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/4 | 18-8 ss slotted pan m/s b18.6.3 | 800 |
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THRDFAST | FL | Machine Screw | Brass | Plain | #4-40 x 1 | slotted round m/s b18.6.3 | 582 |
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THRDFAST | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/4 | 18-8 ss slotted pan m/s b18.6.3 | 535 |
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THRDFAST | FL | Machine Screw | Steel | Zinc/Clear | #4-40 x 5/16 | phil pan m/s type-f b18.6.3 | 1,000 |
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THRDFAST | FL | Machine Screw | Steel | Zinc/Clear | #4-40 x 5/16 | slotted round m/s b18.6.3 | 1,000 |
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THRDFAST | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/8 | 18-8 ss slotted flat m/s b18.6.3 | 400 |
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THRDFAST | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/8 | 18-8 ss slotted round m/s b18.6.3 | 348 |
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THRDFAST | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/4 | 18-8 ss phil pan m/s b18.6.3 | 300 |
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THRDFAST | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1 | 18-8 ss slotted round m/s b18.6.3 | 900 |
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GUIDON | NJ | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/4 | SLOTTED FILLISTER | 100 |
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GUIDON | NJ | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 5/16 | SLOTTED FILLISTER | 2,000 |
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GUIDON | NJ | Machine Screw | Steel | Zinc/Yellow | #4-40 x 1 3/8 | SLOTTED FILLISTER | 24,160 |
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GUIDON | NJ | Machine Screw | Brass | Plain | #4-40 x 3/8 | PHILLIPS PAN | 500 |
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GUIDON | NJ | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Black Oxide | #4-40 x 3/8 | PHILLIPS PAN LOCKING PATCH | 4,000 |
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GUIDON | TX | Machine Screw | Steel | Zinc/Clear | #4-40 x 3/16 | PHILLIPS PAN | 18,000 |
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GUIDON | NJ | Machine Screw | Nylon (Polyamide) | Plain | #4-40 x 1/4 | PHILLIPS PAN | 500 |
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Valley Nu | WA | Machine Screw | Brass | Plain | #4-40 x 3/8 | nc flat slotted | 15 |
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Valley Nu | WA | Machine Screw | Brass | Plain | #4-40 x 1 | nc flat slotted | 60 |
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Valley Nu | WA | Machine Screw | Brass | Plain | #4-40 x 3/4 | nc flat slotted | 100 |
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Valley Nu | WA | Machine Screw | Brass | Plain | #4-40 x 1/4 | nc round slotted | 390 |
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Valley Nu | WA | Machine Screw | Brass | Plain | #4-40 x 1/8 | nc round slotted | 315 |
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Valley Nu | WA | Machine Screw | Brass | Plain | #4-40 x 1 | nc round slotted | 72 |
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Valley Nu | WA | Machine Screw | Brass | Plain | #4-40 x 5/16 | nc round slotted | 3000 |
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Valley Nu | WA | Machine Screw | Brass | Plain | #4-40 x 3/8 | nc round slotted | 287 |
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Valley Nu | WA | Machine Screw | Brass | Plain | #4-40 x 1 | nc pan slotted | 161 |
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Valley Nu | WA | Machine Screw | Nylon (Polyamide) | Plain | #4-40 x 3/8 | nc pan slotted m/s pl | 269 |
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Valley Nu | WA | Machine Screw | Nylon (Polyamide) | Plain | #4-40 x 1/2 | nc pan slotted m/s pl | 2924 |
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Valley Nu | WA | Machine Screw | Nylon (Polyamide) | Plain | #4-40 x 1/4 | nc pan slotted m/s pl | 400 |
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QFS | MI | Machine Screw | Brass | Plain | #4-40 x 1/4 | slotted flat head b18.6.3 | 100 |
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QFS | MI | Machine Screw | Brass | Plain | #4-40 x 3/4 | slotted flat head b18.6.3 | 200 |
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QFS | MI | Machine Screw | Brass | Plain | #4-40 x 1 | slotted flat head b18.6.3 | 200 |
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QFS | MI | Machine Screw | Brass | Plain | #4-40 x 1/2 | slotted flat head b18.6.3 | 1221 |
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QFS | MI | Machine Screw | Brass | Plain | #4-40 x 1 | slotted round head b18.6.3 | 200 |
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