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SEMS Machine Screws, Plain (ASME B18. 13)

SEMS® Machine Screws are machine screws with pre-assembled captive washers, designed to speed total assembly time in a manufacturing process.

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Buy SEMS Machine Screws from one of our FCH Network Members
SupplierLocTypeMaterialFinishSizeDescriptionQty 
AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 3/810-32 x 3/8 p-pan sem int wsh m/s s/s b18.131138
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 1/210-32 x 1/2 p-pan sem int wsh m/s s/s b18.133081
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 1/210-32 x 1/2 p-pan sem sqr-cn s/s b18.132335
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 5/81/4-20 x 5/8 p-pan sem int wsh m/s s/s b18.13203
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 3/162-56 x 3/16 p-pan sem int wsh m/s s/s b18.131700
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 14-40 x 1 p-pan sem int wsh m/s s/s b18.131047
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 3/164-40 x 3/16 p-pan sems int wsh m/s s/s b18.133000
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 1/44-40 x 1/4 p-pan sems ext wsh m/s s/s b18.133263
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 1/44-40 x 1/4 p-pan sems int wsh m/s s/s b18.139387
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 5/164-40 x 5/16 p-pan sem sqr-cn s/s b18.13200
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 3/84-40 x 3/8 p-pan sems int wsh m/s s/s b18.135743
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 7/164-40 x 7/16 p-pan sem square cone s/s b18.13550
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 1/24-40 x 1/2 p-pan sems int wsh m/s s/s b18.135325
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 5/84-40 x 5/8 p-pan sem int wsh m/s s/s b18.133600
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 3/44-40 x 3/4 p-pan sem int wsh m/s s/s b18.133175
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AbabaCASems Machine ScrewSteelPlain6.3-1.81 x 206.3-1.81 x 20mm 18mm loose wsh zii hex sems screw b18.134
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AbabaCASems Machine ScrewSteelPlain#10 x 3/4 19/3210 x 3/4 19/32 od loose wsh zii hex sems screw b18.134
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 16-32 x 1 p-pan sem int wsh m/s s/s b18.132000
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 1/46-32 x 1/4 p-pan sem ext wsh m/s s/s b18.13600
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 1/46-32 x 1/4 p-pan sem int wsh m/s s/s b18.135041
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GLFOHSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 1/2#6-32x1/2 phil pan hd sems internal l/w 18-8 s/s b18.13 () () ()2640
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GLFOHSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 3/8#4-40x3/8 phil pan hd sems external l/w 18-8 s/s b18.13 () () ()4000
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GLFOHSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 1/2#10-32x1/2 phil pan sems int 6-lobe 18-8 s/s b18.13 () () ()3130
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GLFOHSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 3/16#4-40x3/16 phil pan hd sems external l/w 18-8 s/s b18.13 () () ()750
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GLFOHSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 5/16#6-32x5/16 phil pan hd sems external l/w 18-8 s/s b18.13 () () ()115
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GLFOHSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 5/8#10-32x5/8 phil pan hd sems external l/w 18-8 s/s b18.13 () () ()500
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GLFOHSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 3/16#2-56x3/16 phil pan hd sems split l/w 18-8 s/s b18.13 () () ()27572
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#3-48 x 5/163-48 x 5/16 phillips pan head m/s with external tooth lockwasher sems cleaned 18-8 stainless steel b18.1310100
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 1/44-40 x 1/4 pan phil ext. sems m/s 18.8 stainless b18.138035
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 3/164-40 x 3/16 pan phil m/s s/s with external l/w sems b18.13885
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 5/84-40 x 5/8 pan phillips external sems stainless steel b18.1339000
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 5/84-40 x 5/8 pan phil ext sems stainless steel w/ vibratite b18.1311000
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 1/46-32 x 1/4 pan phil ext sems m/s 18.8 stainless steel b18.1319000
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 3/84-40 x 3/8 pan phillips m/s ext sems stainless steel b18.13390
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 5/164-40 x 5/16 pan phillips ext sems m/s 18.8 s/s b18.13200
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8-32 x 1/48-32 x 1/4 pan phil ext. tooth sems stainless steel b18.138000
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8-32 x 3/88-32 x 3/8 pan phil m/s with ext. sems l/washer ss b18.131900
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8-32 x 5/168-32 x 5/16 pan phil m/s ext tooth l/w sems 18-8 ss b18.1312685
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8-32 x 1/28-32 x 1/2 pan phil ext. sems m/s stainless steel b18.131013
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 3/810-32 x 3/8 pan phillips ext tooth sems stainless steel b18.132447
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8-32 x 7/168-32 x 7/16 pan phillips m/s ext tooth l/w sems 18-8 ss b18.131943
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8-32 x 1/28-32x1/2 pan torx ext tooth l/w sems stainless steel b18.13226
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/42/56 x 1/4 pan phillips internal sems m/s stainless b18.132500
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 1/26-32 x 1/2 pan phillips int sems m/s 18.8 s/s b18.13300
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 1/410-32 x 1/4 pan phillips internal sems stainless steel b18.134500
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 7/164-40 x 7/16 pan phil m/s sems square conical washer 18-8 ss b18.131517
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Irwin IndOntSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 5/164-40 x 5/16 pan phil m/s sq cone sems 18-8 stainless steel b18.131571
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ASMCILSems Machine ScrewSteelPlain#6-32 x 1/4coarse sems phil pan hd external tooth lockwasher low carb blox b18.13660
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 1/44-40 x 1/4 p-pan sems int wsh m/s s/s b18.1330
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 3/84-40 x 3/8 p-pan sems int wsh m/s s/s b18.13100
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AbabaCASems Machine ScrewSteelPlain6.3-1.81 x 206.3-1.81 x 20mm 18mm loose wsh zii hex sems screw b18.132
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AbabaCASems Machine ScrewSteelPlain#10 x 3/4 19/3210 x 3/4 19/32 od loose wsh zii hex sems screw b18.132
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 3/86-32 x 3/8 p-pan sems int wsh m/s s/s b18.13200
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AbabaCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 1/26-32 x 1/2 p-pan sems int wsh m/s s/s b18.131041
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AbabaCASems Machine ScrewSteelPlain#2-56 x 5/162-56 x .312 stl screw lock kit (with f/w l/w.& h/n) b18.1314
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General FMISems Machine ScrewSteelPlain#10-32 x 03/410-32x0.75 hex ms sems ext lw b18.1316500
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QFCTXSems Machine ScrewSteelPlain#8 x 1/28x1/2 phil round washer head tapping b18.13300
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QFCTXSems Machine ScrewSteelPlain#10-32 x 110-32x1 pan phil sq cone sems b18.1395
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QFCTXSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 110-32x1 pan phil sq cone sems 18-8 s/s b18.131000
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QFCTXSems Machine ScrewSteelPlain#10-32 x 110-32x1 pan phillips split lock sems b18.134998
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QFCTXSems Machine ScrewSteelPlain#10-32 x 5/1610-32x5/16 phil pan ext sem screw b18.131989
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QFCTXSems Machine ScrewSteelPlain#10-32 x 5/1610-32x5/16 phil pan ext sem screw b18.13775
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QFCTXSems Machine ScrewSteelPlain#10-32 x 3/810-32x3/8 hex slotted square cone sems tz b18.13109783
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QFCTXSems Machine ScrewSteelPlain#10-32 x 3/810-32x3/8 pan phil sq cone sems b18.13944
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QFCTXSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 3/810-32x3/8 pan phil sq cone sems 18-8 b18.132240
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QFCTXSems Machine ScrewSteelPlain#10-32 x 5/810-32x5/8 hex slotted square cone sems b18.1315600
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QFCTXSems Machine ScrewSteelPlain#12-24 x 5/8screw 12-24x5/8 hex washer slotted b18.135245
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QFCTXSems Machine ScrewSteelPlain1/4-20 x 1/41/4-20x1/4 slotted hex ext sem screw b18.135852
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QFCTXSems Machine ScrewSteelPlain1/4-20 x 3/81/4-20x3/8 unslotted hex external sems b18.134700
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QFCTXSems Machine ScrewSteelPlain1/4-20 x 1/21/4-20x1/2 hh dished sems 1/2 od wash b18.13890
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QFCTXSems Machine ScrewSteelPlain1/4-20 x 1/21/4-20x1/2 slotted hex ext sem screw b18.132364
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QFCTXSems Machine ScrewSteelPlain1/4-20 x 5/81/4-20x5/8 unslotted hex head square cone sems b18.13600
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QFCTXSems Machine ScrewSteelPlain1/4-20 x 7/81/4-20x7/8 slotted hex ext sem screw b18.13453
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QFCTXSems Machine ScrewSteelPlain#4-40 x 3/164-40x3/16 phil pan ext sem screw b18.134000
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QFCTXSems Machine ScrewSteelPlain#4-40 x 3/164-40x3/16 phil pan ext sem screw b18.133100
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QFCTXSems Machine ScrewSteelPlain#4-40 x 1/44-40x1/4 phil pan int sem screw black b18.131671
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Marine FastenersFLSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8-32 x 5/168-32x5/16 phillips pan sems ms 18-8 ss w/ext tooth sems washer full b18.131547410
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Marine FastenersFLSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8-32 x 3/48-32 x 3/4 slt ind hex wshr ss b18.1321000
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Marine FastenersFLSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 1/46-32 x 1/4 phil pan ms ss ext sems b18.1310580
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Marine FastenersFLSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8-32 x 3/88-32 x 3/8 phillips pan ext sems ms 18-8 ss b18.138890
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Marine FastenersFLSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 1/26-32 x 1/2 phil pan ms ss ext sems b18.134500
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General FMISems Machine Screw400 Stainless (405, 410,416,420,430 etc.)Plain.188.188 x .781 truss hd semi-tub ss 430 b18.134080
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General FMISems Machine ScrewSteelPlainhf 1/4-20 x 1.25 hex sems w/split lw b18.1324890
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General FMISems Machine ScrewSteelPlain#6-32 x 1/46-32 x .25 pan phil sems w/int lw b18.134225
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General FMISems Machine ScrewSteelPlainhf 1/4-20 x .875 hex sems w/ty a ext b18.1310925
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General FMISems Machine ScrewGrade 2Plain#10-32 x 1/210-32x.5 phillips panil lw sems grade 2 b18.1329,925
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General FMISems Machine ScrewSteelPlain1/4-20 x 1hf 1/4-20x1 round phil sems w/int lw b18.1313,072
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General FMISems Machine ScrewSteelPlain#10-32 x 5/810-32 x .625 unslt hwh ext lw sems b18.135000
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QFCTXSems Machine ScrewSteelPlain#10-32 x 3/810-32 x 3/8 pan phillips split lock sems b18.1311687
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QFCTXSems Machine ScrewSteelPlain#10-32 x 5/810-32 x 5/8 philips pan head internal sems screw b18.13144
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QFCTXSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 3/410-32 x 3/4 pan phil sq cone sems 18-8 b18.132200
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QFCTXSems Machine ScrewSteelPlain#2-56 x 3/82-56 x 3/8 phillips pan head sq. cone b18.1310000
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QFCTXSems Machine ScrewSteelPlain1/4-20 x 1/21/4-20 x 1/2 phil pan ext sem screw b18.13999
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QFCTXSems Machine ScrewSteelPlain1/4-20 x 1/21/4-20 x 1/2 ind hex external sem screw b18.131816
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QFCTXSems Machine ScrewSteelPlain#4-40 x 3/84-40 x 3/8 hex hd slotted square cone sems b18.13900
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QFCTXSems Machine ScrewSteelPlain#4-40 x 3/44-40 x 3/4 phil pan ext sem screw b18.132975
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QFCTXSems Machine ScrewSteelPlain#4-40 x 1/24-40 x 1/2 phil pan ext sem screw b18.13500
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QFCTXSems Machine ScrewSteelPlain#6-32 x 7/166-32 x 7/16 philips pan head internal sems screw b18.1319700
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QFCTXSems Machine ScrewSteelPlain#6-32 x 3/86-32 x 3/8 sltd hex hd ext sem screw b18.13860
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QFCTXSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 1/26-32 x 1/2 phil pan sq cone sems 18-8 b18.132400
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QFCTXSems Machine ScrewSteelPlain#6-32 x 5/86-32 x 5/8 sltd pan ext sem screw b18.131000
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QFCTXSems Machine ScrewSteelPlain#8-32 x 1 1/28-32x1 1/2 pan phil sq cone sems black b18.1332500
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QFCTXSems Machine ScrewSteelPlain#8-32 x 28-32 x 2 phil pan ext sem screw black b18.1323330
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QFCTXSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8-32 x 1/48-32 x 1/4 pan phil sq cone sems 18-8 b18.133000
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QFCTXSems Machine ScrewSteelPlain#8-32 x 3/88-32 x 3/8 philips pan head internal sems screw b18.134000
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QFCTXSems Machine ScrewSteelPlain#8-32 x 3/88-32 x 3/8 pan phil double washer sems b18.131400
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QFCTXSems Machine ScrewSteelPlain#8-32 x 3/88-32 x 3/8 sltd hex hd ext sem screw b18.139000
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QFCTXSems Machine ScrewSteelPlain#8-32 x 5/88-32 x 5/8 phil pan ext sem screw b18.1333833
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 1/4sems m/s external star pan phillips 6-32x1/4 stainless steel 18-8 b18.131900
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/42-56x1/4 phillips pan sems split lock washer machine screw stainless steel 18-8 / washer 18-8 b18.131800
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain18.13sem ext pan ph 1032x5/16 ssbo rohs compliant asme b18.13 b18.132500
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 3/810-32x3/8 phillips pan square cone sems screw stainless steel 18-8 b18.13560
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 3/4sem s cone pan phillips 1032x3/4 stainless steel b18.13554
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plainsem s cone pan phillips 1032x3/4 stainless steel patch b18.13248
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 5/16sem ext pan phillips 632x5/16 stainless steel b18.131000
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 3/8sem ext pan phillips 632x3/8 stainless steel b18.133000
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 1/2sem ext pan phillips 632x1/2 stainless steel b18.13565
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 1sem ext pan phillips 632x1 stainless steel b18.13300
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8 -32 x 3/8sem s cone pan phillips 832x3/8 stainless steel b18.131389
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 5/16sem s cone pan phillips 440x5/16 stainless steel b18.1332
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 3/8sem int pan phillips 440x3/8 stainless steel b18.13746
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plainsem s cone pan phillips 440x3/8 stainless steel full patch b18.13700
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 1sem int pan phillips 440x1 stainless steel b18.1370
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 1/44-40x1/4 double sems screws narrow flat & split washers phillips pan head 18-8 stainless steel quantity 5000 b18.135000
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 1/44-40x1/4 double sems screws regular flat & split washers phillips pan head 18-8 stainless steel quantity 5000 b18.135000
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 1/2sem int pan phillips 1032x1/2 stainless steel b18.13375
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 1/2sem ext pan phillips 1032x1/2 stainless steel b18.13200
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JET FITTINGCASems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 5/8sem ext pan phillips 1032x5/8 stainless steel b18.13250
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WSBKYSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 1/4screw ms pn sem (18-8) ph 6-32x1/4 b18.1310,000
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WSBKYSems Machine ScrewSteelPlain#8-32e/screw ms bnd sems st (pl) 8-32 b18.1364,021
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WSBKYSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 5/8screw ms pn semsc (18-8) ph 10-32x5/8 b18.132,500
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WSBKYSems Machine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8-32 x 1/2screw ms pn semi (18-8) ph 8-32x1/2 b18.136,238
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All SizeTXSems Machine ScrewSteelPlain4.8-1.61 x 194.8-1.61x19mm pan phil sems trim screw 16mm od washer b18.131,500
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