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5/16 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.

103 results, (click on any line for more information)

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
Irwin IndOntSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 lockwasher stainless steel b18.21.1 b27.146
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Irwin IndOntSplit Lock WasherSteelZinc/Clear5/165/16 medium lockwashers steel zinc trivalent clear b18.21.1 b27.1 60089
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Irwin IndOntSplit Lock WasherSteelZinc/Black5/165/16 medium lockwashers steel .0002 min zinc trivalent black b18.21.1 b27.11670
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Irwin IndOntSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 medium lockwashers 18.8 stainless steel b18.21.1 b27.11470
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Irwin IndOntSplit Lock WasherSteelZinc/Yellow5/165/16 medium locks steel zinc yellow b18.21.1 b27.12000
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GLFOHSplit Lock WasherSteelGalvanized5/165/16 lock stl hdg b18.21.1 b27.1 () () ()800
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GLFOHSplit Lock WasherSteelZinc/Clear5/165/16 lock stl zc b18.21.1 b27.1 () () ()50413
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GLFOHSplit Lock WasherSilicon BronzePlain5/165/16 lock sil brz b18.21.1 b27.1 () () ()173
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GLFOHSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 lock 18-8 s/s b18.21.1 b27.1 () () ()11691
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GLFOHSplit Lock WasherSteelPlain5/165/16 lock stl pln b18.21.1 b27.1 () () ()2568
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GLFOHSplit Lock WasherGrade 8Zinc/Yellow5/165/16 lock gr 8 stl zy b18.21.1 b27.1 () () ()16267
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GLFOHSplit Lock WasherSteelZinc/Yellow5/165/16 lock stl zy b18.21.1 b27.1 () () ()17695
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GLFOHSplit Lock Washer316, 317, A4 StainlessPlain5/165/16 lock 316 s/s b18.21.1 b27.1 () () ()426
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GLFOHSplit Lock Washer316, 317, A4 StainlessPlain5/165/16 lock 316 s/s domestic b18.21.1 b27.1 () () ()117
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GLFOHSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 ss/300 med/split lock 304ss MS35338-140 b18.21.1 b27.1 () () ()625
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GLFOHSplit Lock WasherSteelZinc/Yellow5/165/16 steel med/split lock cad/yellow MS35338-45 b18.21.1 b27.1 () () ()5980
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BHAMALSplit Lock Washer316, 317, A4 StainlessPlain5/165/16 split lockwasher 316ss b18.21.1 b27.1519
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GLFOHSplit Lock WasherAluminumPlain5/165/16 lock stl alum b18.21.1 b27.1 () () ()1000
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GLFOHSplit Lock WasherSteelFluoropolymer-Based (Xylan, Fluorokote, Teflon)5/165/16 lock stl teflon b18.21.1 b27.1 () () ()80
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GLFOHSplit Lock WasherGrade 8Zinc/Yellow5/165/16 lock gr 8 stl zy domestic b18.21.1 b27.1 () () ()1436
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AbabaCASplit Lock WasherSteelPlain5/165/16 split lock washer al-2000 (black) hrd stl b18.21.1 b27.13650
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AbabaCASplit Lock WasherSteelGalvanized5/165/16 med split l/w hrd stl hdg b18.21.1 b27.15073
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AbabaCASplit Lock WasherSteelZinc/Clear5/165/16 med split l/w hrd stl znc b18.21.1 b27.111154
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AbabaCASplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 med split l/w s/s b18.21.1 b27.14442
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AbabaCASplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 med split l/w 25/pkg s/s b18.21.1 b27.113
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AbabaCASplit Lock WasherSteelZinc/Yellow5/165/16 med split l/w alloy yel znc b18.21.1 b27.1584
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AbabaCASplit Lock WasherSteelZinc/Yellow5/165/16 med split l/w 25/pkg alloy yel znc b18.21.1 b27.16
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AbabaCASplit Lock Washer316, 317, A4 StainlessPlain5/165/16 split lock washer 316 s/s b18.21.1 b27.1400
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AbabaCASplit Lock WasherSteelGalvanized5/165/16 med split l/w hrd stl hdg b18.21.1 b27.1300
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AbabaCASplit Lock WasherSteelZinc/Clear5/165/16 med split l/w hrd stl znc b18.21.1 b27.11100
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AbabaCASplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 med split l/w s/s b18.21.1 b27.11300
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AbabaCASplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 med split l/w 25/pkg s/s b18.21.1 b27.16
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AbabaCASplit Lock WasherSteelZinc/Yellow5/165/16 med split l/w alloy yel znc b18.21.1 b27.1300
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AbabaCASplit Lock WasherSteelZinc/Yellow5/165/16 med split l/w 25/pkg alloy yel znc b18.21.1 b27.18
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SIIINSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 18-8 stainless steel medium split lock washer) b18.21.1 b27.13350
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JET FITTINGCASplit Lock WasherSteelZinc/Clear5/165/16 split lock stl zinc DMLZP03120 b18.21.1 b27.145383
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JET FITTINGCASplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 split l/w 18-8 754054 b18.21.1 b27.180599
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JET FITTINGCASplit Lock WasherSteelBlack Oxide5/165/16 split l/w stl blk ox 31WSB b18.21.1 b27.112115
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StandardMASplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 lock washer 18-8 stainless steel b18.21.1 b27.151450
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StandardMASplit Lock WasherSilicon BronzePlain5/165/16 lock washer silicon bronze b18.21.1 b27.134727
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General FMISplit Lock WasherSteelZinc/Clear5/165/16 med lock zn b18.21.1 b27.138443
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QFCTXSplit Lock WasherSteelPlain5/165/16 med split lock plain b18.21.1 b27.14100
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QFCTXSplit Lock WasherSteelPlain5/165/16 med split lock plain b18.21.1 b27.112500
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QFCTXSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Zinc/Clear5/165/16 light spring lock zinc (96 hrs sst white rust) rohs b18.21.1 b27.187601
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QFCTXSplit Lock WasherSteelZinc/Clear5/165/16 split lock trivalent clear b18.21.1 b27.110600
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QFCTXSplit Lock WasherSteelZinc/Clear5/165/16 split lock trivalent clear b18.21.1 b27.119500
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QFCTXSplit Lock WasherSteelZinc/Clear5/165/16 split lock trivalent clear b18.21.1 b27.16000
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QFCTXSplit Lock WasherSteelZinc/Black5/165/16 split lock steel black zinc b18.21.1 b27.1500
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QFCTXSplit Lock WasherSteelZinc/Yellow5/165/16 split lock zinc/yellow b18.21.1 b27.110538
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QFCTXSplit Lock WasherSteelZinc/Yellow5/165/16 split lock zinc/yellow b18.21.1 b27.132750
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QFCTXSplit Lock WasherSilicon BronzePlain5/165/16 split lock sili brnz b18.21.1 b27.1500
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QFCTXSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 split lock 18-8 s/s b18.21.1 b27.121000
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QFCTXSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 split lock 18-8 s/s b18.21.1 b27.117000
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QFCTXSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 split lock 18-8 s/s b18.21.1 b27.11195
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QFCTXSplit Lock WasherSteelGalvanized5/165/16 med split lock hdg domestic b18.21.1 b27.12672
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QFCTXSplit Lock WasherSteelGalvanized5/165/16 med split lock mech galv domestic b18.21.1 b27.15720
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QFCTXSplit Lock WasherSteelGalvanized5/165/16 split lock hdg b18.21.1 b27.111
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QFCTXSplit Lock WasherSteelGalvanized5/165/16 split lock hdg b18.21.1 b27.112470
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QFCTXSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 split lock 18-8 b18.21.1 b27.12748
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QFCTXSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 split lock 18-8 b18.21.1 b27.148
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QFCTXSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 split lock 18-8 b18.21.1 b27.12291
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B & K FASTPASplit Lock WasherSteelGalvanized5/165/16 lockwashers hd galv b18.21.1 b27.115334
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B & K FASTPASplit Lock WasherGrade 8Zinc/Yellow5/165/16 lockwashers gr 8 z yellow b18.21.1 b27.123487
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B & K FASTPASplit Lock WasherSteelZinc/Clear5/165/16 medium lockwashers zinc b18.21.1 b27.12524
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B & K FASTPASplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 med lockwashers 18-8 stainless b18.21.1 b27.181096
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B & K FASTPASplit Lock Washer316, 317, A4 StainlessPlain5/165/16 med lockwashers t 316 stainless b18.21.1 b27.1111
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General FMISplit Lock WasherSteelPlain5/165/16 med lw .0002 zidi b18.21.1 b27.16895
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General FMISplit Lock WasherSteelZinc/Clear5/165/16 hvy lw zn b18.21.1 b27.13500
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QFCTXSplit Lock WasherSteelZinc/Yellow5/165/16 split lock washer zinc yellow b18.21.1 b27.18000
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QFCTXSplit Lock WasherSteelZinc/Clear5/165/16 split lockwasher zinc b18.21.1 b27.1288
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QFCTXSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 med lw dom 304 ss b18.21.1 b27.1235
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QFCTXSplit Lock WasherSteelGalvanized5/165/16 med split lockwasher mech galv b18.21.1 b27.1287
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JET FITTINGCASplit Lock Washer316, 317, A4 StainlessPlain5/16washer lock split 5/16 stainless steel 316 (a4) b18.21.1 b27.1100
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JET FITTINGCASplit Lock WasherSteelPlain5/165/16 split lock washer steel b18.21.1 b27.15750
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JET FITTINGCASplit Lock WasherSteelZinc/Clear5/165/16 split lock washer steel zinc b18.21.1 b27.1165
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JET FITTINGCASplit Lock WasherSteelZinc/Yellow5/165/16 split lock washer steel zinc yellow b18.21.1 b27.12410
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JET FITTINGCASplit Lock WasherSteelZinc/Clear5/165/16 split lock washer steel zinc plated b18.21.1 b27.15000
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JET FITTINGCASplit Lock WasherSteelBlack Oxide5/165/16 medium split lock washers steel black oxide b18.21.1 b27.19500
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JET FITTINGCASplit Lock WasherSteelGalvanized5/165/16 split lock washer steel hot dip galvanized b18.21.1 b27.1400
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WurthOntSplit Lock Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16wsh reg splt lw sst (18-8) 5/16 b18.21.1 b27.1903
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FDLILSplit Lock WasherSteelZinc/Clear5/165/16 regular (medium) split lock washer zinc and bake 4,500pcs/ctn 8kgs/ctn b18.21.1 b27.14400
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FDLILSplit Lock WasherSteelZinc/Clear5/165/16 regular (medium) split lock washer zinc and bake 4,500pcs/ctn 8kgs/ctn b18.21.1 b27.14400
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THRDFASTFLSplit Lock WasherAluminumPlain5/16alum split lock b18.21.1 b27.1912
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THRDFASTFLSplit Lock WasherSilicon BronzePlain5/16sili brnz split lock b18.21.1 b27.1160
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THRDFASTFLSplit Lock WasherAluminumPlain5/16alum split lock b18.21.1 b27.1284
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THRDFASTFLSplit Lock WasherSilicon BronzePlain5/16sili brnz split lock b18.21.1 b27.164
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THRDFASTOKSplit Lock WasherGrade 8Zinc/Yellow5/16gr8 split lock z&y b18.21.1 b27.1108
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THRDFASTMSSplit Lock WasherSteelPlain5/16split lock b18.21.1 b27.1142
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KBSTNSplit Lock WasherSteelPlain5/165/16 alloy split l/w b18.21.1 b27.111,543
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KBSTNSplit Lock WasherSteelZinc/Yellow5/165/16 alloy split l/w yellowznc b18.21.1 b27.115,580
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THRDFASTALSplit Lock WasherSteelGalvanized5/16split lock hdg b18.21.1 b27.163600
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THRDFASTALSplit Lock WasherSteelFluoropolymer-Based (Xylan, Fluorokote, Teflon)5/16split lock teflon blue b18.21.1 b27.11300
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THRDFASTFLSplit Lock Washer316, 317, A4 StainlessPlain5/16t-316 ss split lock b18.21.1 b27.1226
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THRDFASTOKSplit Lock WasherSteelGalvanized5/16split lock hdg b18.21.1 b27.1275
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All SizeTXSplit Lock WasherSteelGalvanized5/165/16 split lock washer galv b18.21.1 b27.18,900
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FACCAOntSplit Lock WasherSteelZinc/Yellow5/16split lock washer 5/16 bolt size steel yellow zinc dichromate pltd b18.21.1 b27.122,582
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