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Thumb Screws, Plain (ASME B18. 6.8)

Plain Thumb Screws can either have a round knurled head or a spade head and are designed to be tightened by hand. Plain thumb screws are also referred to as Type P Thumb Screws.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
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GLFOHThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 11/4-20x1 thumb screw 18-8 s/s b18.6.8 () () ()792
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GLFOHThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 3/4#10-32x3/4 knurled thumb screw 18-8 s/s b18.6.8 () () ()85
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GLFOHThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 13/8-16x1 thumb screw type p 18-8 s/s b18.6.8 () () ()280
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AbabaCAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-24 x 1/210-24 x 1/2 thmb screw s/s b18.6.850
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AbabaCAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-24 x 3/410-24 x 3/4 thmb screw s/s b18.6.830
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AbabaCAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 110-32 x 1 thmb screw s/s b18.6.825
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AbabaCAThumb Screw (Plain)BrassPlain#10-32 x 3/810-32 x 3/8 knurled thumb screw brass b18.6.841
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AbabaCAThumb Screw (Plain)AluminumPlain1/4-201/4-20 knurled knob w/o set screw per print alum b18.6.8200
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AbabaCAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 3/86-32 x 3/8 knurled thumb screw per print s/s b18.6.8300
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AbabaCAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 3/810-32 x 3/8 diamond knurled thumb screw s/s b18.6.8900
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AbabaCAThumb Screw (Plain)Nylon (Polyamide)Plain#8-32 x 5/88-32 x 5/8 knurled thumb screw slotted nylon b18.6.8100
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AbabaCAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8-32 x 1/28-32 x 1/2 thmb screw s/s b18.6.8135
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AbabaCAThumb Screw (Plain)BrassPlain#10-32 x 1/210-32 x 1/2 knurled thumb screw brass b18.6.8170
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AbabaCAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 11/4-20 x 1 thmb screw s/s b18.6.850
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AbabaCAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1 1/21/4-20 x 1 1/2 thmb screw s/s b18.6.850
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AbabaCAThumb Screw (Plain)Nylon (Polyamide)Plain1/4-20 x 3/41/4-20 x 3/4 knurled thumb screw black nylon b18.6.8650
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AbabaCAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 1/25/16-18 x 1/2 thmb screw s/s b18.6.85
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Irwin IndOntThumb Screw (Plain)Nylon (Polyamide)Plain6-32 x 1/4 thumbscrew nylon 090632025teg b18.6.81300
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Irwin IndOntThumb Screw (Plain)PlasticPlain1 1/21-1/2 dia thumbscrew knob plastic b18.6.8200
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ASMCILThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 11/4-20x1 coarse thumb screw type-b no shoulder ss18-8 b18.6.8500
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AbabaCAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 15/16-18 x 1 thmb screw s/s b18.6.840
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AbabaCAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 3/45/16-18 x 3/4 thmb screw s/s b18.6.815
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EximS'poreThumb Screw (Plain)SteelPlain02-1600thumb screw lockplastic blackl02-1600 b18.6.81480
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EximS'poreThumb Screw (Plain)Nylon (Polyamide)Plain6/6screw thumb slotnylon 6/6 natural#8-32 x 3/8 in mfr p/n 090832037teg b18.6.89500
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EximS'poreThumb Screw (Plain)Nylon (Polyamide)Plain#10-32 x 1/2screw thumb slotnylon natural#10-32 x 1/2 in b18.6.8360
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EximS'poreThumb Screw (Plain)Nylon (Polyamide)Plainscrew thumb economy grade nylon natural#1/4-20 x 0.875 inmfr p/n 092520087teg b18.6.855
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EximS'poreThumb Screw (Plain)Resin (Phenolic, etc.)Plainscrew knob phenolic plastic blk knurled#3/8-24 x 2.500 insteel blue zn unc 2a b18.6.82352
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EximS'poreThumb Screw (Plain)Nylon (Polyamide)Plainx 8screw thumb knurled slottednylon 6/6 natural m3 x 8 mm b18.6.8546
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JET FITTINGCAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plainscr thumb its 8-32x3/8 ss blk rohs compliant b18.6.8520
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JET FITTINGCAThumb Screw (Plain)Nylon (Polyamide)Plain#10-32 x 1/210-32x1/2 knurled thumb screw nylon 6/6 black SC-01032-0500-KTS-BK b18.6.81300
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JET FITTINGCAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8-32 x 3/87106ss screw thumb knurled 8-32x3/8 18-8 304 steel 7106SS SCREW, THUMB, KNURLED, 8-32 X 3/8, STAINLESS STEEL b18.6.8500
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JET FITTINGCAThumb Screw (Plain)Nylon (Polyamide)Plain#10-32 x 1/210-32x1/2 nyl knur thmb scr 91032 b18.6.83120
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JET FITTINGCAThumb Screw (Plain)SteelPlain1/4-20 x 21/4-20x2 thumb screw type- b18.6.8280
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StandardMAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 11/4-20x1 thumb screw 18-8 stainless steel b18.6.84942
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StandardMAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1 1/41/4-20x1-1/4 thumb screw 18-8 stainless steel b18.6.85667
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StandardMAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 13/8-16x1 thumb screw 18-8 stainless steel b18.6.81719
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StandardMAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 1 1/23/8-16x1-1/2 thumb screw 18-8 stainless steel b18.6.82
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StandardMAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-24 x 110-24x1 thumb screw 18-8 stainless steel b18.6.81177
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StandardMAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1 1/21/4-20x1-1/2 thumb screw 18-8 stainless steel b18.6.8630
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StandardMAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 15/16-18x1 thumb screw 18-8 stainless steel b18.6.8657
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StandardMAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 21/4-20x2 thumb screw 18-8 stainless steel b18.6.8798
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StandardMAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 1/25/16-18x1/2 thumb screw 18-8 stainless steel b18.6.814
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QFCTXThumb Screw (Plain)SteelPlain#10-32 x 1/210-32x1/2 washer face thumb screw bras b18.6.810200
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QFCTXThumb Screw (Plain)SteelPlain#10-32 x 1/210-32x1/2 washer face thumb screw bras b18.6.82350
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B & K FASTPAThumb Screw (Plain)BrassPlain5/16-18 x 15/16-18 x 1 brass thumb screws b18.6.828
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B & K FASTPAThumb Screw (Plain)BrassPlain#8-32 x 3/88-32 x 3/8 knurled brass thumb screws b18.6.8540
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B & K FASTPAThumb Screw (Plain)SteelPlain#14 x 1/2#14 x 1/2 license plate thumb screws b18.6.825
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B & K FASTPAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1 1/21/4-20 x 1 1/2 stainless thumb screws b18.6.8100
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Marine FastenersFLThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 1/210-32x1/2 knurled thumb scr slotted ss b18.6.81000
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Marine FastenersFLThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 21/4-20x2 thumb screw ss b18.6.8300
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OSSCORIThumb Screw (Plain)SteelPlain1/4-20 x 11/4-20x1 thumb screw b18.6.8415
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OSSCORIThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1 1/41/4-20x1 1/4 thumb screw 18-8 304 b18.6.850
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OSSCORIThumb Screw (Plain)SteelPlain1/4-20 x 21/4-20x2 thumb screw b18.6.8516
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OSSCORIThumb Screw (Plain)Nylon (Polyamide)Plain1/4-20 x 5/81/4-20x5/8 thumb screw nylon b18.6.897
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OSSCORIThumb Screw (Plain)SteelPlain1/4-20 x 31/4-20x3 thumb screw b18.6.8200
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OSSCORIThumb Screw (Plain)Nylon (Polyamide)Plain3/8-16 x 23/8-16x2 knurled thumb screw nylon b18.6.82,988
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OSSCORIThumb Screw (Plain)SteelPlain3/8-16 x 33/8-16x3 thumb screw b18.6.86
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OSSCORIThumb Screw (Plain)SteelPlain3/8-16 x 13/8-16x1 thumb screw b18.6.8305
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OSSCORIThumb Screw (Plain)SteelPlain#6-32 x 1/26-32x1/2 thumb screw b18.6.8200
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OSSCORIThumb Screw (Plain)AluminumPlain#6-32 x 9/166-32x9/16 knurled thumb screw alum b18.6.8190
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OSSCORIThumb Screw (Plain)SteelPlain#8-32 x 18-32x1 thumb screw b18.6.8234
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OSSCORIThumb Screw (Plain)AluminumPlain#8-32 x 9/168-32x9/16 knurled thumb screw alum b18.6.8150
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QFCTXThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 13/8-16x1 type p thumb screw 18-8 b18.6.85
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Bostwick INThumb Screw (Plain)SteelPlain5/16-18 x 35/16-18 x 3 thumb screw w/o shoulder b18.6.814
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JET FITTINGCAThumb Screw (Plain)Nylon (Polyamide)Plain#10-32 x 1/2 6/6screw thumb knurl 10-32x1/2 nylon 6/6 natural b18.6.8400
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JET FITTINGCAThumb Screw (Plain)Nylon (Polyamide)Plain#10-32 x 1/2 6/610-32x1/2 knurled thumb screw nylon 6/6 black b18.6.81410
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JET FITTINGCAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plainscr thumb its 832x3/8 ss blk rohs compliant b18.6.8925
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JET FITTINGCAThumb Screw (Plain)BrassPlain#8-32 x 1/2screw thumb knurl 832x1/2 brass b18.6.81076
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JET FITTINGCAThumb Screw (Plain)Nylon (Polyamide)Plain1/4-20 x 3/4 6/6scr thumb knurl 1/420x3/4 nylon 6/6 black b18.6.8125
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JET FITTINGCAThumb Screw (Plain)Nylon (Polyamide)Plain1/4-20 x 11/4-20x1 economy thumb screw nylon 6/6 natural b18.6.8400
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JET FITTINGCAThumb Screw (Plain)Nylon (Polyamide)Plain#4-40 x 3/84-40x3/8 economy thumb screw nylon black b18.6.87899
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JET FITTINGCAThumb Screw (Plain)Nylon (Polyamide)Plain#4-40 x 1/24-40x1/2 knurled thumb screw washer face nylon 6/6 black b18.6.8370
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JET FITTINGCAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8-32 x 1/28-32x1/2 knurled thumb screw stainless steel black b18.6.8250
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THRDFASTFLThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 1 1/218-8 ss thumb b18.6.875
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THRDFASTFLThumb Screw (Plain)SteelPlain1/4-20 x 1thumb b18.6.811
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THRDFASTFLThumb Screw (Plain)SteelPlain#6-32 x 3/8thumb b18.6.889
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KBSTNThumb Screw (Plain)SteelPlain1/4-20 x 11/4-20 x 1 type p or b thumbscrew b18.6.84,430
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KBSTNThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 3/43/8-16 x 3/4 type p or b thumbscrew s/s b18.6.8100
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THRDFASTALThumb Screw (Plain)SteelPlain#10-24 x 3/8thumb b18.6.820
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THRDFASTFLThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-24 x 1/218-8 ss thumb b18.6.820
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THRDFASTFLThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/418-8 ss thumb b18.6.8444
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THRDFASTFLThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-24 x 3/418-8 ss thumb b18.6.81,000
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THRDFASTALThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 3/418-8 ss thumb b18.6.810
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WSBKYThumb Screw (Plain)SteelPlainscrew thumb knurled shear loc 902b 1024 1.00s b18.6.81,000
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WSBKYThumb Screw (Plain)SteelPlainscrew thumb knurled shear loc 903b 2520 0.75s b18.6.8900
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WSBKYThumb Screw (Plain)SteelPlainscrew thumb shear loc 930b 0508 010s b18.6.81,402
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All SizeTXThumb Screw (Plain)SteelPlain3/8-16 x 13/8-16 x 1 thumb screw b18.6.899
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All SizeTXThumb Screw (Plain)SteelPlain5/16 x 35/16 x 3 thumb screw b18.6.81
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FACCAOntThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/4thumb screw without shoulder 1/4-20 unc x 3/4 18-8 stainless steel b18.6.82,000
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