#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.
196,584 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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TownCountry | AR | Machine Screw | Steel | Zinc/Clear | #4-40 x 1 | pan phillips | 20900 |
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Weaver | WA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 5/16 | 4-40x5/16 hex trim machine screw 18-8 ss | 106 |
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Weaver | WA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/4 | 4-40x3/4 hex trim machine screw 18-8 ss | 51 |
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Hayes | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/4 | 4-40x1/4 6-lobe pan machine screw 18-8ss | 5000 |
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ACCURATE | IL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/4 | phil oval mach 18-8 s/s | 13800 |
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ACCURATE | IL | Machine Screw | Steel | Zinc/Clear | #4-40 x 1 | slotted flat m/s | 50 |
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American | NY | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/4 | phil flat m/s pl | 4620 |
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American | NY | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/2 | slotted round m/s pl | 7700 |
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American | NY | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 5/16 | slotted hex washer m/s 18-8 304 | 4000 |
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American | NY | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/8 | 4-40x3/8 slotted flat m/s 18-8 304 steel | 800 |
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American | NY | Machine Screw | Brass | Nickel Plated | #4-40 x 7/8 | 4/40 x 7/8 slotted flat m/s brass nickle pl | 720 |
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American | NY | Machine Screw | Brass | Plain | #4-40 x 7/8 | 4/40 x 7/8 slotted flat m/s brass silver pl | 5000 |
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METRO IND | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1 1/8 | 4-40x1 1/8 slotted pan m/s s/s | 900 |
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METRO IND | OH | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/2 | phil flat m/s | 100 |
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METRO IND | OH | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/4 | phil flat m/s | 300 |
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METRO IND | OH | Machine Screw | Steel | Zinc/Clear | #4-40 x 3/8 | phil flat m/s | 500 |
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METRO IND | OH | Machine Screw | Steel | Zinc/Clear | #4-40 x 5/8 | phil flat m/s | 100 |
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METRO IND | OH | Machine Screw | Steel | Zinc/Clear | #4-40 x 1 | phil pan m/s | 4950 |
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METRO IND | OH | Machine Screw | Steel | Zinc/Clear | #4-40 x 1 1/4 | phil pan m/s | 300 |
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METRO IND | OH | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/2 | phil pan m/s | 4035 |
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METRO IND | OH | Machine Screw | Steel | Zinc/Clear | #4-40 x 3/4 | phil pan m/s | 6450 |
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METRO IND | OH | Machine Screw | Steel | Zinc/Clear | #4-40 x 3/8 | phil pan m/s | 22280 |
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METRO IND | OH | Machine Screw | Steel | Zinc/Clear | #4-40 x 7/16 | phil pan m/s | 300 |
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METRO IND | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1 | phil pan m/s s/s | 200 |
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METRO IND | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/4 | phil pan m/s s/s | 1009 |
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METRO IND | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/16 | phil pan m/s s/s | 500 |
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METRO IND | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/4 | phil pan m/s s/s | 500 |
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METRO IND | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 5/16 | phil pan m/s s/s | 500 |
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METRO IND | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1 | slotted flat m/s s/s | 97 |
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METRO IND | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/4 | slotted flat m/s s/s | 12 |
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METRO IND | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/8 | slotted flat m/s s/s | 99 |
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METRO IND | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/16 | slotted flat m/s s/s | 1201 |
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SII | IN | Machine Screw | Steel | Zinc/Clear | #4-40 x 3/8 | #4-40 x 3/8 hex-slotted drive indented hex head zinc finish steel machine screw b18.6.3 | 8750 |
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SII | IN | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/4 | #4-40 x 1/4 phillips pan head zinc steel machine screw b18.6.3 | 20950 |
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SII | IN | Machine Screw | Steel | Zinc/Clear | #4-40 x 3/8 | #4-40 x 3/8 phillips pan head zinc finish steel machine screw b18.6.3 | 13541 |
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SII | IN | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/2 | #4-40 x 1/2 phillips drive pan head zinc finish steel machine screw b18.6.3 | 9500 |
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SII | IN | Machine Screw | Steel | Zinc/Clear | #4-40 x 3/4 | #4-40 x 3/4 phillips pan head zinc finish steel machine screw b18.6.3 | 15050 |
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SII | IN | Machine Screw | Steel | Zinc/Clear | #4-40 x 7/8 | #4-40 x 7/8 phillips drive pan head zinc finish steel machine screw b18.6.3 | 14900 |
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SII | IN | Machine Screw | Steel | Zinc/Clear | #4-40 x 1 | #4-40 x 1 phillips pan head zinc plated machine screw) b18.6.3 | 2500 |
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SII | IN | Machine Screw | Steel | Zinc/Clear | #4-40 x 1 1/4 | #4-40 x 1-1/4 phillips pan head zinc steel machine screw b18.6.3 | 11250 |
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QFC | TX | Machine Screw | Steel | Zinc/Clear | #4-40 x 3/16 | 4-40x3/16 phil pan m/s zinc b18.6.3 | 22 |
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QFC | TX | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/4 | 4-40x1/4 slotted pan m/s zinc b18.6.3 | 3400 |
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QFC | TX | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/4 | 4-40x1/4 slotted pan m/s zinc b18.6.3 | 1100 |
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QFC | TX | Machine Screw | Steel | Zinc/Clear | #4-40 x 3/8 | 4-40x3/8 slotted flat m/s zinc b18.6.3 | 489 |
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QFC | TX | Machine Screw | Steel | Zinc/Clear | #4-40 x 3/8 | 4-40x3/8 slotted pan m/s zinc b18.6.3 | 380 |
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QFC | TX | Machine Screw | Steel | Zinc/Clear | #4-40 x 3/8 | 4-40x3/8 slotted pan m/s zinc b18.6.3 | 4375 |
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QFC | TX | Machine Screw | Steel | Plain | #4-40 x 3/8 | 4/40x3/8 round mach screw b18.6.3 | 18 |
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QFC | TX | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/2 | 4-40x1/2 phil flat m/s zinc b18.6.3 | 226 |
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QFC | TX | Machine Screw | Steel | Zinc/Clear | #4-40 x 5/8 | 4-40x5/8 slotted pan m/s zinc b18.6.3 | 8028 |
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QFC | TX | Machine Screw | Steel | Zinc/Clear | #4-40 x 7/8 | 4-40x7/8 phil pan m/s zinc b18.6.3 | 12884 |
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QFC | TX | Machine Screw | Steel | Zinc/Clear | #4-40 x 1 | 4-40x1 phillips pan head m/s tri-zinc b18.6.3 | 741 |
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QFC | TX | Machine Screw | Steel | Zinc/Clear | #4-40 x 1 1/4 | 4-40x1 1/4 slotted pan m/s zinc b18.6.3 | 4500 |
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QFC | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1 1/4 | 4-40x1 1/4 slotted pan m/s 18-8 s/s b18.6.3 | 172 |
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QFC | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1 1/4 | 4-40x1 1/4 phil flat m/s 304 s/s b18.6.3 | 2715 |
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QFC | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1 1/4 | 4-40x1 1/4 phil pan m/s 18-8 s/s b18.6.3 | 200 |
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QFC | TX | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/8 | 4-40x1/8 slotted round m/s zinc b18.6.3 | 5000 |
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QFC | TX | Machine Screw | Steel | Zinc/Yellow | #4-40 x 1/8 | 4-40x1/8 phil truss m/s zinc/yellow b18.6.3 | 4000 |
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QFC | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1 3/4 | 4-40x1 3/4 phil pan m/s 18-8 s/s b18.6.3 | 5404 |
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QFC | TX | Machine Screw | Nylon (Polyamide) | Plain | #4-40 x 3/16 | 4-40x3/16 slotted pan m/s nylon b18.6.3 | 1256 |
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QFC | TX | Machine Screw | Steel | Zinc/Clear | #4-40 x 3/16 | 4-40x3/16 phillips flat head undercut m/s trivalent zinc b18.6.3 | 4000 |
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FTS | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/4 | unslotted hex ms 18-8 ss | 5230 |
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B & K FAST | PA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 9/16 | 4/40 x 9/16 slotted binding machine screws 18-8 b18.6.3 | 34 |
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B & K FAST | PA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/8 | 4/40 x 3/8 phil flat machine screw u/c 18-8 ss b18.6.3 | 400 |
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B & K FAST | PA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1 | 4/40 x 1 slotted flat machine screws 18-8 ss b18.6.3 | 406 |
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TSF | TX | Machine Screw | Steel | Zinc/Clear | #4-40 x 1/4 | phil flat m/s zinc 440 x 1/4 | 25000 |
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TSF | TX | Machine Screw | Steel | Zinc/Black | #4-40 x 3/8 | phil pan ms trivalent black zinc 4-40 x 3/8 | 1900 |
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TSF | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/8 | phil pan m/s dfars 300 ss 440 x 1/8 | 1600 |
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TSF | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/16 | phil pan m/s 4-40 x 3/16 | 1100 |
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TSF | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/4 | phil pan m/s 302 ss 2a thrd 4-40 x 1/4 dfars compliant pass astm a967-05 | 14600 |
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TSF | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 5/16 | phil pan ms 302 ss dfars 4-40 (2a) x 5/16 pass. astm a967-05 | 10980 |
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TSF | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 5/16 | phil pan ms ss 4-40 x 5/16 | 500 |
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TSF | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/8 | phil pan m/s 302 ss dfars 4-40(2a) x 3/8 pass astm a967-05 | 13900 |
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TSF | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Passivated | #4-40 x 7/16 | phillips pan machine screw 302 ss dfars passivated 4-40 x 7/16 dual certified | 800 |
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TSF | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1/2 | phil pan ms ss 4-40 x 1/2 | 450 |
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TSF | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 7/8 | phil pan m/s 302hqss dfars 4-40 x 7/8 | 1800 |
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TSF | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/16 | phil flat u/c m/s 302 ss 2a thrd 440 x 3/16 dfars pass. astm a967-05 | 50 |
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TSF | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Black Oxide | #4-40 x 3/8 | screw phil flat ss 100 | 900 |
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TSF | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Black Oxide | #4-40 x 5/8 | phil flat 100 ss black oxide 4-40 x 5/8 | 400 |
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TSF | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Black Oxide | #4-40 x 7/8 | phil flat 100 ss black oxide 4-40 x 7/8 | 100 |
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TSF | TX | Machine Screw | Brass | Plain | #4-40 x 5/8 | screw phil flat 100 440 x 5/8 brass/black | 250 |
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TSF | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/16 | flat 100 ms ss 4-40 x .187 | 353 |
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TSF | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 1 | 4-40 x 1 ms24693-c phillips flat 100 degree f/t machine screw 300 series s/s dfar | 532 |
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TSF | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/8 | phil flat m/s 302 ss 100 hd 440 x 3/8 | 2850 |
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TSF | TX | Machine Screw | Steel | Cadmium/Yellow | #4-40 x 5/16 | screw phil pan steel/cad ii 4-40 x 5/16 | 146 |
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American | NY | Machine Screw | Steel | Zinc/Clear | #4-40 x 5/16 | 4/40 x 5/16 phil pan m/s zinc pl | 800 |
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