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#4 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.

Machine Screw (b18.6.3), showing 200, (click on any line for more information)

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 14-40 x 1 p-flat 100 deg m/s s/s b18.6.3500
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 14-40 x 1 p-flat m/s s/s b18.6.32346
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AbabaCAMachine ScrewSteelZinc/Clear#4-40 x 14-40 x 1 p-flat m/s stl znc b18.6.37500
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 14-40 x 1 p-pan m/s s/s b18.6.3678
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AbabaCAMachine ScrewSteelZinc/Clear#4-40 x 14-40 x 1 p-pan m/s stl znc b18.6.312218
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 14-40 x 1 s-fill m/s s/s b18.6.3400
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AbabaCAMachine ScrewSteelZinc/Clear#4-40 x 1 1/84-40 x 1 1/8 s-flat m/s stl znc b18.6.3100
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 1 1/44-40 x 1 1/4 p-flat m/s s/s b18.6.3251
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 1/84-40 x 1/8 p-flat m/s u/cut s/s b18.6.3860
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 1/84-40 x 1/8 p-pan m/s s/s b18.6.33276
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AbabaCAMachine ScrewSteelZinc/Clear#4-40 x 1/84-40 x 1/8 p-pan m/s stl znc b18.6.34589
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AbabaCAMachine ScrewSteelZinc/Clear#4-40 x 1/84-40 x 1/8 s-bind m/s stl znc b18.6.3800
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 1 3/84-40 x 1 3/8 p-pan m/s s/s b18.6.32920
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 1 3/84-40 x 1 3/8 s-flat m/s s/s b18.6.3764
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AbabaCAMachine ScrewSteelZinc/Clear#4-40 x 1 3/84-40 x 1 3/8 s-flat m/s stl znc b18.6.3400
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AbabaCAMachine ScrewNylon (Polyamide)Plain#4-40 x 1 3/84-40 x 1 3/8 s-pan m/s nylon b18.6.31017
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 1 1/24-40 x 1 1/2 p-flat m/s s/s b18.6.3368
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 1 1/24-40 x 1 1/2 p-pan m/s s/s b18.6.31247
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 3/164-40 x 3/16 p-flat 100 deg m/s s/s b18.6.31349
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AbabaCAMachine ScrewSteelZinc/Clear#4-40 x 3/164-40 x 3/16 p-flat 100 deg m/s stl znc b18.6.31975
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SIIINMachine ScrewSteelZinc/Clear#4-40 x 1 1/2#4-40 x 1-1/2 phillips pan head zinc plated machine screw) b18.6.39850
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SIIINMachine ScrewSteelZinc/Clear#4-40 x 3/8#4-40 x 3/8 hex-slotted drive indented hex head zinc finish steel machine screw b18.6.38750
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SIIINMachine ScrewSteelZinc/Clear#4-40 x 1/4#4-40 x 1/4 phillips pan head zinc steel machine screw b18.6.320950
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SIIINMachine ScrewSteelZinc/Clear#4-40 x 3/8#4-40 x 3/8 phillips pan head zinc finish steel machine screw b18.6.313541
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SIIINMachine ScrewSteelZinc/Clear#4-40 x 1/2#4-40 x 1/2 phillips drive pan head zinc finish steel machine screw b18.6.39500
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SIIINMachine ScrewSteelZinc/Clear#4-40 x 3/4#4-40 x 3/4 phillips pan head zinc finish steel machine screw b18.6.315050
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SIIINMachine ScrewSteelZinc/Clear#4-40 x 7/8#4-40 x 7/8 phillips drive pan head zinc finish steel machine screw b18.6.314900
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SIIINMachine ScrewSteelZinc/Clear#4-40 x 1#4-40 x 1 phillips pan head zinc plated machine screw) b18.6.32500
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B & K FASTPAMachine ScrewSteelZinc/Clear#4-40 x 1/44/40 x 1/4 phil flat machine screws u/c zinc b18.6.310950
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B & K FASTPAMachine ScrewSteelZinc/Clear#4-40 x 1/44/40 x 1/4 phil pan machine screws zinc b18.6.31900
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B & K FASTPAMachine ScrewSteelZinc/Clear#4-40 x 3/84/40 x 3/8 phil pan machine screws zinc b18.6.314100
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B & K FASTPAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 9/164/40 x 9/16 slotted binding machine screws 18-8 b18.6.334
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B & K FASTPAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 3/84/40 x 3/8 phil flat machine screw u/c 18-8 ss b18.6.3400
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B & K FASTPAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 14/40 x 1 slotted flat machine screws 18-8 ss b18.6.3406
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