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1/4-28 Machine Screws (ASME B18. 6.3)
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.
79 results, (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 | |
Buy Machine Screws from one of our FCH Network Members | ||||||||
JET FITTING | CA | Machine Screw | Brass | Plain | 1/4-28 x 1/4 | machine screw flat82 slotted 1/428x1/4 brass undercut b18.6.3 | 330 |
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B & K FAST | PA | Machine Screw | Aluminum | Plain | 1/4-28 x 1/4 | 1/4-28 x 1/4 slotted oval machine screws alum b18.6.3 | 494 |
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JET FITTING | CA | Machine Screw | Brass | Plain | 1/4-28 x 5/16 | machine screw flat82 slotted 1/428x5/16 brass undercut b18.6.3 | 382 |
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JET FITTING | CA | Machine Screw | Steel | Cadmium/Yellow | 1/4-28 x 5/16 | machine screw pan phillips 1/428x5/16 steel cadmium ii yellow b18.6.3 | 1100 |
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Ababa | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 3/8 | 1/4-28 x 3/8 s-flat m/s u/cut s/s b18.6.3 | 300 |
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JET FITTING | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 3/8 | machine screw pan phillips 1/428x3/8 stainless steel b18.6.3 | 825 |
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GLF | OH | Machine Screw | Steel | Cadmium/Yellow | 1/4-28 x 3/8 | screw MS35266-77 b18.6.3 () () | 19 |
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QFC | TX | Machine Screw | Steel | Zinc/Clear | 1/4-28 x 3/8 | 1/4-28x3/8 phil pan m/s zinc b18.6.3 | 536 |
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WSB | KY | Machine Screw | Steel | Zinc/Clear | e/screw ms hex st (zt) slt 1/4-28x3/8 b18.6.3 | 33,615 |
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BHAM | AL | Machine Screw | Steel | Zinc/Clear | 1/4-28 x 3/8 | 1/4-28x3/8 phil pan m/s zn b18.6.3 | 30 |
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B & K FAST | PA | Machine Screw | Steel | Black Oxide | 1/4-28 x 1/2 | 1/4-28 x 1/2 phil oval machine screw blk oxide b18.6.3 | 170 |
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B & K FAST | PA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1/2 | 1/4-28 x 1/2 phil pan machine screws stainless b18.6.3 | 628 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1/2 | 1/4-28x1/2 slotted flat m/s 18-8 s/s b18.6.3 () () | 340 |
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Standard | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1/2 | 1/4-28x1/2 phillips flat head machine screw 18-8 stainless steel b18.6.3 | 82 |
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Parker | AZ | Machine Screw | Superalloy (Inconel, Hastelloy, Alloy 20) | Passivated | 1/4-28 x 1/2 | 1/4-28 x 1/2 pan head mach 6-lobe screw-asme b18.6.3 .5 thread a286 hardened passivate w/precote 30 per nas5317e4-8 made in u.s.a. | 165 |
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CresMfg | CT | Machine Screw | Steel | Cadmium/Yellow | 1/4-28 x 1/2 | 1/4-28 x .50 drilled fillister steel cad type-2 class 3 (rev c) ms35266-79 b18.6.3 | 2,700 |
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CresMfg | CT | Machine Screw | Steel | Cadmium/Yellow | 1/4-28 x 1/2 | 1/4-28 x .500 ph pan steel cad type-2 class 3 (rev 3) ms35207-279 b18.6.3 | 1,600 |
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ASMC | IL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1/2 | (ft) fine phil pan ss18-8 b18.6.3 | 759 |
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JET FITTING | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1/2 | 1/4-28x1/2 ms phillips pan a2 (18-8) 773858 b18.6.3 | 493 |
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Parker | AZ | Machine Screw | Superalloy (Inconel, Hastelloy, Alloy 20) | Passivated | 1/4-28 x 1/2 | 1/4-28 x 1/2 pan head mach 6-lobe screw-asme b18.6.3 .5 thread a286 hardened passivate w/precote 30 per nas5317e4-8 made in u.s.a. | 165 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1/2 | 1/4-28x1/2 phil pan m/s 18-8 s/s b18.6.3 () () | 150 |
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Ababa | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 5/8 | 1/4-28 x 5/8 p-flat 100 deg m/s s/s b18.6.3 | 278 |
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Ababa | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 5/8 | 1/4-28 x 5/8 p-pan m/s s/s b18.6.3 | 50 |
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JET FITTING | CA | Machine Screw | Steel | Zinc/Clear | 1/4-28 x 5/8 | machine screw round slotted 1/428x5/8 steel zinc b18.6.3 | 350 |
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JET FITTING | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 5/8 | machine screw pan phillips 1/428x5/8 stainless steel b18.6.3 | 657 |
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GLF | OH | Machine Screw | Steel | Cadmium/Yellow | 1/4-28 x 5/8 | ms35207-280 b18.6.3 () () | 1000 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Passivated | 1/4-28 x 5/8 | machine screw 304ss MS51960-83 b18.6.3 () () | 50 |
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Marine Fasteners | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 5/8 | 1/4-28 x 5/8 phil pan ms ss b18.6.3 | 14240 |
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All Size | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 5/8 | 1/4-28 x 5/8 slotted pan machine screw s/s b18.6.3 | 70 |
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Mid-Valley | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 5/8 | machine screw b18.6.3 | inquire |
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JET FITTING | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Passivated | 1/4-28 x 5/8 | ms24693-c295 1/4-28 x 5/8 phillips flat m/s 100 deg s/s 304ss MS24693-C295 b18.6.3 | 409 |
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JET FITTING | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Passivated | 1/4-28 x 5/8 | ms51958-80 1/4-28 x 5/8 phillips pn ms s/s 304ss MS51958-80 b18.6.3 | 300 |
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Ababa | CA | Machine Screw | Steel | Zinc/Yellow | 1/4-28 x 3/4 | 1/4-28 x 3/4 p-flat 100 deg m/s stl yel znc b18.6.3 | 200 |
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Ababa | CA | Machine Screw | Steel | Nickel | 1/4-28 x 3/4 | 1/4-28 x 3/4 s-oval m/s stl nkl b18.6.3 | 138 |
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JET FITTING | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 3/4 | machine screw flat100 phillips 1/428x3/4 stainless steel b18.6.3 | 950 |
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JET FITTING | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 3/4 | machine screw flat82 phillips 1/428x3/4 stainless steel b18.6.3 | 180 |
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JET FITTING | CA | Machine Screw | Steel | Zinc/Clear | 1/4-28 x 3/4 | machine screw truss phillips 1/428x3/4 steel zinc b18.6.3 | 167 |
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QFC | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 3/4 | 1/4-28x3/4 phil pan m/s 18-8 b18.6.3 | 75 |
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Marine Fasteners | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 3/4 | 1/4-28x3/4 phil flat ms ss b18.6.3 | 17576 |
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GLF | OH | Machine Screw | Steel | Zinc/Clear | 1/4-28 x 3/4 | 1/4-28x3/4 phil flat m/s stl zc b18.6.3 () () | 721 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Passivated | 1/4-28 x 3/4 | machine screw 304ss MS51958-81 b18.6.3 () () | 15 |
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Standard | MA | Machine Screw | 316, 317, A4 Stainless | Plain | 1/4-28 x 3/4 | 1/4-28x3/4 phillips truss head machine screw 316 stainless steel b18.6.3 | 9790 |
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Standard | MA | Machine Screw | 316, 317, A4 Stainless | Plain | 1/4-28 x 3/4 | 1/4-28x3/4 phillips pan head machine screw 316 stainless steel b18.6.3 | 9911 |
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Standard | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 3/4 | 1/4-28x3/4 phillips truss head machine screw 18-8 stainless steel b18.6.3 | 3100 |
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Standard | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 3/4 | 1/4-28x3/4 phillips flat head machine screw 18-8 stainless steel b18.6.3 | 16400 |
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KBS | TN | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 3/4 | 1/4-28 x 3/4 phil pan m/s s/s b18.6.3 | 3,800 |
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JET FITTING | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 3/4 | 1/4-28x3/4 phillips flat100 machine screw stainless steel 18-8 plain 1-PXM-25F-75 b18.6.3 | 950 |
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GLF | OH | Machine Screw | Steel | Cadmium/Yellow | 1/4-28 x 25/32 | screw MS27039-4-12 b18.6.3 () () | 289 |
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B & K FAST | PA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 7/8 | 1/4-28 x 7/8 phil pan machine screws 18-8 ss b18.6.3 | 200 |
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GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 7/8 | 1/4-28x7/8 phil flat 100-deg m/s 18-8 s/s b18.6.3 () () | 387 |
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Ababa | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1 | 1/4-28 x 1 p-pan m/s s/s b18.6.3 | 50 |
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B & K FAST | PA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1 | 1/4-28 x 1 phil flat machine screws 18-8 ss b18.6.3 | 84 |
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Marine Fasteners | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1 | 1/4-28x1 phil flat ms s/s b18.6.3 | 20740 |
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Marine Fasteners | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1 | 1/4-28x1 phil pan ms s/s b18.6.3 | 15200 |
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Standard | MA | Machine Screw | 316, 317, A4 Stainless | Plain | 1/4-28 x 1 | 1/4-28x1 phillips pan head machine screw 316 stainless steel b18.6.3 | 19973 |
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Standard | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1 | 1/4-28x1 phillips truss head machine screw 18-8 stainless steel b18.6.3 | 5118 |
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Standard | MA | Machine Screw | 316, 317, A4 Stainless | Plain | 1/4-28 x 1 | 1/4-28x1 phillips truss head machine screw 316 stainless steel b18.6.3 | 2107 |
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Standard | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1 | 1/4-28x1 phillips pan head machine screw 18-8 stainless steel b18.6.3 | 238 |
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Standard | MA | Machine Screw | 316, 317, A4 Stainless | Plain | 1/4-28 x 1 | 1/4-28x1 phillips flat head machine screw 316 stainless steel b18.6.3 | 10220 |
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JET FITTING | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1 1/4 | machine screw pan phillips 1/428x1-1/4 stainless steel b18.6.3 | 974 |
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GLF | OH | Machine Screw | Steel | Cadmium/Yellow | 1/4-28 x 1 1/4 | screw MS24693-S300 b18.6.3 () () | 185 |
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GL F | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Passivated | 1/4-28 x 1 1/4 | machine screw 304ss MS51960-87 b18.6.3 () () | 90 |
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FACCA | Ont | Machine Screw | Brass | Plain | 1/4-28 x 1 1/4 | machine screw round slot head 1/4-28 unf x 1 1/4 lg brass plain finish ansi b18-6.3-1972 b18.6.3 | 15,240 |
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Ababa | CA | Machine Screw | Steel | Zinc/Yellow | 1/4-28 x 1 5/16 | 1/4-28 x 1 5/16 p-flat 100 deg m/s stl yel znc b18.6.3 | 4019 |
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Ababa | CA | Machine Screw | Steel | Zinc/Clear | 1/4-28 x 1 3/8 | 1/4-28 x 1 3/8 p-flat 100 deg m/s stl znc b18.6.3 | 966 |
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Ababa | CA | Machine Screw | Steel | Zinc/Clear | 1/4-28 x 1 3/8 | 1/4-28 x 1 3/8 p-flat 100 deg m/s stl znc b18.6.3 | 50 |
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JET FITTING | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1 1/2 | machine screw pan phillips 1/428x1-1/2 stainless steel b18.6.3 | 459 |
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Standard | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1 1/2 | 1/4-28x1-1/2 phillips flat head machine screw 18-8 stainless steel b18.6.3 | 4609 |
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Standard | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1 1/2 | 1/4-28x1-1/2 phillips pan head machine screw 18-8 stainless steel b18.6.3 | 10135 |
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JET FITTING | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1 7/8 | machine screw pan phillips 1/428x1-7/8 stainless steel b18.6.3 | 128 |
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Standard | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 2 | 1/4-28x2 phillips flat head machine screw 18-8 stainless steel b18.6.3 | 2 |
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JET FITTING | CA | Machine Screw | Brass | Plain | 1/4-28 x 2 1/4 | machine screw flat82 slotted 1/428x2-1/4 brass b18.6.3 | 119 |
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CresMfg | CT | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Passivated | 1/4-28 x 2 1/4 | 1/4-28 x 2.25 ph flat 82 ss passivate ams2700 method 1 class 4 dfars (rev d) ms51960-91 b18.6.3 | 1,000 |
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GLF | OH | Machine Screw | Grade 5 | Zinc/Clear | 1/4-28 x 2.30 | 1/4-28x2.30 special phil flat m/s grade 5 stl zc b18.6.3 () () | 690 |
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JET FITTING | CA | Machine Screw | Brass | Plain | 1/4-28 x 3 | machine screw flat82 phillips 1/428x3 brass b18.6.3 | 314 |
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B & K FAST | PA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 3 | 1/4-28 x 3 slotted round machine screws 18-8 ss b18.6.3 | 4 |
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B & K FAST | PA | Machine Screw | Steel | Plain | 1/4-28 x 4 7/8 | 1/4-28 x 4 7/8 non-countersunk flat head machine screws 90 bend & 2 thread b18.6.3 | 2706 |
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THRDFAST | AL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 | nfx2 1/2 18-8 ss phil flat m/s b18.6.3 | 10 |
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THRDFAST | AL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 | nfx2 18-8 ss phil flat m/s b18.6.3 | 10 |
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