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5/8 Split Lock Washers (ASME B18. 21.1)

Split Lock Washers feature a helical-shaped split ring that has also been twisted. When fastened, the two sharp ends exert a spring force on the fastener to create increased friction and resistance to motion. Helical spring lock washers are the most common form of lock washer and are best suited to applications with smaller loads.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
BHAMALSplit Lock WasherSilicon BronzePlain5/85/8 split lock sili brze b18.21.1 b27.1240
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BHAMALSplit Lock WasherSteelGalvanized5/85/8 split lock mech galv dom b18.21.1 b27.1328
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AbabaCASplit Lock Washer316, 317, A4 StainlessPlain5/85/8 med split l/w 316 s/s b18.21.1 b27.1250
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AbabaCASplit Lock WasherSteelGalvanized5/85/8 med split l/w hrd stl hdg b18.21.1 b27.1850
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AbabaCASplit Lock WasherSteelZinc/Clear5/85/8 med split l/w hrd stl znc b18.21.1 b27.1825
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AbabaCASplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/85/8 med split l/w s/s b18.21.1 b27.1808
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AbabaCASplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/85/8 med split l/w 5/pkg s/s b18.21.1 b27.118
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AbabaCASplit Lock WasherSteelZinc/Yellow5/85/8 med split l/w alloy yel znc b18.21.1 b27.1805
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AbabaCASplit Lock WasherSteelZinc/Yellow5/85/8 med split l/w 5/pkg alloy yel znc b18.21.1 b27.111
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AbabaCASplit Lock WasherSteelGalvanized5/85/8 split lock washer domestic hrd stl hdg b18.21.1 b27.125
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GLFOHSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/85/8 lock 18-8 s/s b18.21.1 b27.1 () () ()665
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GLFOHSplit Lock WasherSteelZinc/Clear5/85/8 lock stl zc b18.21.1 b27.1 () () ()4389
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GLFOHSplit Lock WasherGrade 8Zinc/Yellow5/85/8 lock gr 8 stl zy b18.21.1 b27.1 () () ()16117
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GLFOHSplit Lock WasherSteelGalvanized5/85/8 lock stl hdg b18.21.1 b27.1 () () ()3518
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GLFOHSplit Lock WasherSteelZinc/Yellow5/85/8 lock stl zy b18.21.1 b27.1 () () ()4787
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GLFOHSplit Lock WasherGrade 5Zinc/Clear5/85/8 lock grade 5 stl zc b18.21.1 b27.1 () () ()3351
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GLFOHSplit Lock Washer316, 317, A4 StainlessPlain5/85/8 lock 316 s/s b18.21.1 b27.1 () () ()34
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GLFOHSplit Lock WasherSteelPlain5/85/8 lock stl pln b18.21.1 b27.1 () () ()3752
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GLFOHSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/85/8 lock 304 s/s b18.21.1 b27.1 () () ()59
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GLFOHSplit Lock WasherSilicon BronzePlain5/85/8 lock brz b18.21.1 b27.1 () () ()12
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GLFOHSplit Lock WasherSilicon BronzePlain5/85/8 lock sil brz b18.21.1 b27.1 () () ()150
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GLFOHSplit Lock WasherSteelDip-Spin, Spray-Spin Basecoat + Topcoats (Dacromet, Doerken, Geomet, Magni, etc.)5/85/8 lock stl geomet b18.21.1 b27.1 () () ()108
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GLFOHSplit Lock WasherSteelFluoropolymer-Based (Xylan, Fluorokote, Teflon)5/85/8 lock stl teflon b18.21.1 b27.1 () () ()1854
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GLFOHSplit Lock WasherSteelPlain5/85/8 hvy lock stl pln b18.21.1 b27.1 () () ()172
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GLFOHSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/85/8 lock 18-8 s/s domestic b18.21.1 b27.1 () () ()65
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GLFOHSplit Lock WasherGrade 8Zinc/Yellow5/85/8 lock gr 8 stl zy domestic b18.21.1 b27.1 () () ()239
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GLFOHSplit Lock WasherGrade 8Plain5/85/8 lock gr 8 stl pln domestic b18.21.1 b27.1 () () ()1986
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GLFOHSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8ms35338-145 5/8 lock s/s 304ss b18.21.1 b27.1 () () ()210
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Irwin IndOntSplit Lock WasherSteelZinc/Clear5/85/8 medium lockwashers zinc b18.21.1 b27.11255
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AbabaCASplit Lock WasherSteelGalvanized5/85/8 med split l/w hrd stl hdg b18.21.1 b27.1150
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AbabaCASplit Lock WasherSteelZinc/Clear5/85/8 med split l/w hrd stl znc b18.21.1 b27.1250
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AbabaCASplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/85/8 med split l/w s/s b18.21.1 b27.1175
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AbabaCASplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/85/8 med split l/w 5/pkg s/s b18.21.1 b27.13
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AbabaCASplit Lock WasherSteelZinc/Yellow5/85/8 med split l/w alloy yel znc b18.21.1 b27.1100
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AbabaCASplit Lock WasherSteelZinc/Yellow5/85/8 med split l/w 5/pkg alloy yel znc b18.21.1 b27.19
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Alma BoltMISplit Lock WasherSteelPlain5/85/8 heavy pattern lock washer b18.21.1 b27.11430
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JET FITTINGCASplit Lock WasherSteelZinc/Clear5/85/8 split l/w stl zinc 349012 b18.21.1 b27.17549
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StandardMASplit Lock Washer316, 317, A4 StainlessPlain5/85/8 lock washer 316 stainless steel b18.21.1 b27.1250
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General FMISplit Lock WasherSteelZinc/Clear5/85/8 med lock zn b18.21.1 b27.129050
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QFCTXSplit Lock WasherSteelPlain5/85/8 med split lock plain b18.21.1 b27.11700
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QFCTXSplit Lock WasherSteelPlain5/85/8 hi-alloy lock plain b18.21.1 b27.150
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QFCTXSplit Lock WasherSteelZinc/Yellow5/85/8 light split l/w zinc/yellow b18.21.1 b27.11042
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QFCTXSplit Lock WasherSteelZinc/Clear5/85/8 split lock tri-zinc b18.21.1 b27.1684
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QFCTXSplit Lock WasherSteelZinc/Clear5/85/8 split lock tri-zinc b18.21.1 b27.12300
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QFCTXSplit Lock WasherSteelZinc/Clear5/85/8 split lock tri-zinc b18.21.1 b27.14483
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QFCTXSplit Lock WasherGrade 5Zinc/Yellow5/85/8 split lock thru-hardened for grade 5 & grade 8 applications yellow zinc b18.21.1 b27.153600
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QFCTXSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/85/8 split lock a2 18-8 304 b18.21.1 b27.1750
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QFCTXSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/85/8 split lock a2 18-8 304 domestic b18.21.1 b27.1184
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QFCTXSplit Lock WasherSteelGalvanized5/85/8 med split lock hdg domestic b18.21.1 b27.14
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QFCTXSplit Lock WasherSteelGalvanized5/85/8 med split lock mech galv domestic b18.21.1 b27.1121
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QFCTXSplit Lock WasherSteelGalvanized5/85/8 med split lock mech galv domestic b18.21.1 b27.12748
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QFCTXSplit Lock WasherSteelGalvanized5/85/8 med split lock mech galv domestic b18.21.1 b27.112436
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QFCTXSplit Lock WasherSteelGalvanized5/85/8 med split lock mech galv domestic b18.21.1 b27.125800
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QFCTXSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/85/8 304ss lock domestic b18.21.1 b27.1196
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QFCTXSplit Lock WasherSteelGalvanized5/85/8 med split lock hdg b18.21.1 b27.1700
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QFCTXSplit Lock WasherSteelGalvanized5/85/8 med split lock hdg b18.21.1 b27.14234
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QFCTXSplit Lock WasherSteelGalvanized5/85/8 med split lock hdg b18.21.1 b27.11255
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QFCTXSplit Lock WasherSteelGalvanized5/85/8 med split lock hdg b18.21.1 b27.11584
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QFCTXSplit Lock WasherSteelGalvanized5/85/8 med split lock hdg b18.21.1 b27.124
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B & K FASTPASplit Lock WasherSteelGalvanized5/85/8 lockwashers hd galv b18.21.1 b27.12800
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B & K FASTPASplit Lock WasherGrade 8Zinc/Yellow5/85/8 lockwashers gr 8 z yellow b18.21.1 b27.12827
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B & K FASTPASplit Lock WasherSteelPlain5/85/8 medium lockwashers plain b18.21.1 b27.12746
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B & K FASTPASplit Lock WasherSteelZinc/Clear5/85/8 medium lockwashers zinc b18.21.1 b27.11485
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B & K FASTPASplit Lock WasherSteelPlain5/85/8 vibration proof lockwashers m16(set) b18.21.1 b27.1258
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B & K FASTPASplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/85/8 med lockwashers 18-8 stainless b18.21.1 b27.11516
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BHAMGASplit Lock WasherSuperalloy (Inconel, Hastelloy, Alloy 20)Plain5/85/8 hastelloy c276 split lock s b18.21.1 b27.142
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Marine FastenersFLSplit Lock Washer316, 317, A4 StainlessPlain5/85/8 lock 316 ss 25 per small bag 5 small bags per master pack-generic brand 316ss b18.21.1 b27.16200
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Marine FastenersFLSplit Lock WasherSteelZinc/Clear5/85/8 med lock s/zinc .156 min thk (349012) b18.21.1 b27.11920
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Marine FastenersFLSplit Lock WasherGrade 8Zinc/Clear5/85/8 med lock washer g8 s/zcd .156 min thk 340350 b18.21.1 b27.15400
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Marine FastenersFLSplit Lock WasherAluminumPlain5/85/8 med lock washer aluminum .156 min thk b18.21.1 b27.15000
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Marine FastenersFLSplit Lock Washer316, 317, A4 StainlessPlain5/85/8 med lock washer 316ss-25 per box b18.21.1 b27.1219
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General FMISplit Lock WasherSteelZinc/Clear5/85/8 hvy lw zn b18.21.1 b27.11630
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OSSCORISplit Lock WasherSteelPlain5/85/8 split lock b18.21.1 b27.1484
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QFCTXSplit Lock WasherSteelGalvanized5/85/8 split lockwasher galvanized domestic b18.21.1 b27.160
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QFCTXSplit Lock Washer316, 317, A4 StainlessPlain5/85/8 316ss lockwasher b18.21.1 b27.118
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JET FITTINGCASplit Lock WasherSteelZinc/Clear5/85/8 split lock washer steel zinc plated b18.21.1 b27.17510
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WurthOntSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8wsh reg splt lw sst (18-8) 5/8 b18.21.1 b27.1194
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FDLILSplit Lock WasherSteelZinc/Clear5/85/8 split lock washer steel zinc per drawing#100-1415 rev. 001 2000pcs/ctn &22kgs/ctn b18.21.1 b27.16000
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FDLILSplit Lock WasherSteelZinc/Clear5/85/8 regular (medium) split lock washer zinc and bake 1,000pcs/ctn 11kgs/ctn b18.21.1 b27.1950
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FDLILSplit Lock WasherSteelZinc/Clear5/85/8 regular (medium) split lock washer zinc and bake 1,000pcs/ctn 11kgs/ctn b18.21.1 b27.1950
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FDLILSplit Lock WasherSteelZinc/Clear5/85/8 med split lockwashers steel zinc per asme b18.21-1 1999 2000pcs/ctn & 22.27kgs/ctn b18.21.1 b27.162820
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FDLILSplit Lock WasherSteelZinc/Clear5/85/8 med split lockwashers steel zinc per asme b18.21-1 1999 2000pcs/ctn & 22.27kgs/ctn b18.21.1 b27.162820
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FDLILSplit Lock WasherSteelZinc/Clear5/85/8 split lock washer steel zinc per drawing#100-1415 rev. 001 2000pcs/ctn &22kgs/ctn b18.21.1 b27.16000
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JET FITTINGCASplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8washer lock split 5/8 stainless steel b18.21.1 b27.1195
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THRDFASTFLSplit Lock WasherSteelPlain5/8split lock domestic b18.21.1 b27.11,284
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THRDFASTFLSplit Lock WasherGrade 8Plain5/8gr8 split lock domestic b18.21.1 b27.1205
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THRDFASTFLSplit Lock WasherSilicon BronzePlain5/8sili brnz split lock b18.21.1 b27.141
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THRDFASTOKSplit Lock WasherSteelCadmium5/8split lock b18.21.1 b27.181
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THRDFASTOKSplit Lock Washer316, 317, A4 StainlessPlain5/8t-316 ss split lock b18.21.1 b27.128
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THRDFASTOKSplit Lock WasherSteelPlain5/8split lock domestic b18.21.1 b27.13
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THRDFASTALSplit Lock WasherSteelGalvanized5/8hvy patterened lock hdg b18.21.1 b27.13,819
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THRDFASTALSplit Lock WasherSteelFluoropolymer-Based (Xylan, Fluorokote, Teflon)5/8split lock teflon blue b18.21.1 b27.1300
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THRDFASTALSplit Lock WasherSteelCadmium5/8split lock b18.21.1 b27.1 domestic47
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THRDFASTALSplit Lock WasherSteelZinc/Clear5/8split lock domestic b18.21.1 b27.132
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THRDFASTMSSplit Lock WasherSteelFluoropolymer-Based (Xylan, Fluorokote, Teflon)5/8split lock teflon blue b18.21.1 b27.186
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KBSTNSplit Lock WasherSteelPlain5/85/8 alloy split l/w b18.21.1 b27.11,298
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KBSTNSplit Lock WasherSteelGalvanized5/85/8 split lock/wshr hdg! b18.21.1 b27.11,992
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KBSTNSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/85/8 split lock/w s/s b18.21.1 b27.15,253
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THRDFASTALSplit Lock WasherSteelPlain5/8split lock b18.21.1 b27.111406
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THRDFASTOKSplit Lock WasherSteelPlain5/8split lock b18.21.1 b27.1532
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THRDFASTFLSplit Lock WasherSteelGalvanized5/8double coil lock hdg b18.21.1 b27.12
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THRDFASTALSplit Lock WasherSilicon BronzePlain5/8sili brnz split lock b18.21.1 b27.136
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THRDFASTOKSplit Lock WasherSteelZinc/Yellow5/8split lock z&y domestic b18.21.1 b27.1131
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All SizeTXSplit Lock Washer316, 317, A4 StainlessPlain5/85/8 split lockwasher 316 s/s domestic b18.21.1 b27.125
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