All Lock Washers
ASME / ANSI B18.21.1 -1999 - IMPERIAL - Corrosion resistant plating - For use with nuts & bolts to aid in preventing them from looseninghttps://www.calfast.com/13177-lock-washer-helical-sp... COMPARE THIS ITEM$1.33 - $188.64 /100PCFor Bolt Dia. Price PROD # #6 .031 inch Width $1.47/100PC LWZ6 #8 .055 inch Width $1.48/100PC LWZ8 3/16" .055 inch Width $1.69/100PC LWZ003 # 12 .070 inch Width $1.74/100PC LWZ12 1/4" .109 inch Width $1.33/100PC LWZ004 5/16" .125 inch Width $2.05/100PC LWZ005 3/8" .141 inch Width $2.95/100PC LWZ006 7/16" .156 inch Width $4.56/100PC LWZ007 1/2" .171 inch Width $5.16/100PC LWZ008 9/16" .188 inch Width $9.11/100PC LWZ009 5/8" .203 inch Width $12.36/100PC LWZ010 3/4" .234 inch Width $21.09/100PC LWZ012 7/8" .266inch Width $30.50/100PC LWZ014 1" .297 inch Width $47.12/100PC LWZ016 1-1/8" .328 inch Width $69.42/100PC LWZ018 1-1/4" .359 inch Width $92.34/100PC LWZ020 1-1/2" .422 inch Width $188.64/100PC LWZ024 
ASME / ANSI B18.21.1 -1999 - IMPERIAL - Oil Coating Resists Corrosion - For use with socket head cap screws and in tight space constraintshttps://www.calfast.com/5375-lock-washer-hi-collar-h... COMPARE THIS ITEM$7.12 - $181.18 /100PCFor Bolt Dia. Price PROD # #10 .200 I.D. ||.294 O.D. $7.12/100PC BRI013012 1/4" .260 I.D. ||.363 O.D. $7.41/100PC BRI013014 5/16" .322 I.D. ||.457 O.D. $8.88/100PC BRI013016 3/8" .385 I.D. ||.550 O.D. $12.91/100PC BRI013018 7/16" .450 I.D. ||.644 O.D. $19.70/100PC BRI013020 1/2" .512 I.D. ||.733 O.D. $37.11/100PC BRI013022 5/8" .641 I.D. ||.917 O.D. $45.27/100PC BRI013024 3/4" .766 I.D. ||1.105 O.D. $82.66/100PC BRI013026 7/8" .894 I.D. ||1.291 O.D. $101.74/100PC BRI013028 1" 1.024 I.D. ||1.478 O.D. $181.18/100PC BRI013030 
ASME / ANSI B18.21.1 -1999 - IMPERIAL - Oil Coating Resists Corrosion - For use with nuts & bolts to aid in preventing them from looseninghttps://www.calfast.com/13104-lock-washer-helical-sp... COMPARE THIS ITEM$1.19 - $118.51 /100PCFor Bolt Dia. Price PROD # 1/4" .109 inch Width $1.19/100PC LWB004 5/16" .125 inch Width $2.03/100PC LWB005 3/8" .125 inch Width $2.89/100PC LWB006 7/16" .156 inch Width $4.44/100PC LWB007 1/2" .171 inch Width $7.23/100PC LWB008 5/8" .203 inch Width $12.67/100PC LWB010 3/4" .234 inch Width $19.20/100PC LWB012 7/8" .266 inch Width $27.76/100PC LWB014 1" .297 inch Width $49.28/100PC LWB016 1-1/8" .328 inch Width $83.83/100PC LWB018 1-1/4" .359 inch Width $118.51/100PC LWB020 
DIN 127B - METRIC - Zinc Plated - To prevent hex head cap screws DIN 931 & DIN 933 from looseninghttps://www.calfast.com/13147-lock-washer-helical-sp... COMPARE THIS ITEM$3.98 - $174.97 /100PCFor Bolt Dia. Price PROD # M4 4.1 mm I.D. || 7.6 mm O.D. $4.42/100PC LWMZ4MM M5 5.1 mm I.D. || 9.2 mm O.D. $3.98/100PC LWMZ5MM M6 6.1 mm I.D. || 11.8 mm O.D. $6.50/100PC LWMZ6MM M8 8.1 mm I.D. || 14.8 mm O.D. $7.99/100PC LWMZ8MM M10 10.2 mm I.D. || 18.1 mm O.D. $13.10/100PC LWMZ10MM M12 12.2 mm I.D. || 21.1 mm O.D. $18.95/100PC LWMZ12MM M14 14.2 mm I.D. || 24.1 mm O.D. $32.61/100PC LWMZ14MM M16 16.2 mm I.D. || 27.4 mm O.D. $40.85/100PC LWMZ16MM M18 18.2 mm I.D. || 29.4 mm O.D. $61.06/100PC LWMZ18MM M20 20.2 mm I.D. || 33.6 mm O.D. $65.36/100PC LWMZ20MM M24 24.5 mm I.D. || 40 mm O.D. $78.34/100PC LWMZ24MM M30 30.5 mm I.D. || 48.2 mm O.D. $174.97/100PC LWMZ30 
ASME / ANSI B18.21.1 -1999 - IMPERIAL - Corrosion resistant plating - For use with nuts & bolts to aid in preventing them from looseninghttps://www.calfast.com/20600-lock-washer-external-t... COMPARE THIS ITEM$1.32 - $94.26 /100PCFor Bolt Dia. Price PROD # #4 .260-.245 O.D. $1.32/100PC LWZEXT4 #6 .320-.305 O.D. $5.66/100PC LWZEXT6 #8 .381-.365 O.D. $6.39/100PC LWZEXT8 #10 .410-.395 O.D. $5.75/100PC LWZEXT10 # 12 .475-.460 O.D. $7.19/100PC LWZEXT12 1/4" .510-.494 O.D. $11.15/100PC LWZEXT004 5/16" .610-.588 O.D. $16.40/100PC LWZEXT005 3/8" .694-.670 O.D. $15.65/100PC LWZEXT006 7/16" .760-.740 O.D. $38.42/100PC LWZEXT007 1/2" .900-.880 O.D. $31.94/100PC LWZEXT008 5/8" 1.070-1.045 O.D. $52.52/100PC LWZEXT010 3/4" 1.245-1.220 O.D. $80.20/100PC LWZEXT012 7/8" 1.410-1.364 O.D. $94.26/100PC LWZEXT014 
ASME / ANSI B18.21.1 -1999 - IMPERIAL - Galvanized Plating Resists Corrosion - To prevent nuts & bolts loosening in outdoor applications.https://www.calfast.com/13116-lock-washer-helical-sp... COMPARE THIS ITEM$4.05 - $42.92 /100PC
ASME / ANSI B18.21.1 -1999 - IMPERIAL - Corrosion resistant plating - For use with nuts & bolts to aid in preventing them from looseninghttps://www.calfast.com/20601-lock-washer-internal-t... COMPARE THIS ITEM$4.85 - $144.36 /100PCFor Bolt Dia. Price PROD # #8 .381-.365 O.D. $4.85/100PC LWZINT8 #10 .410-.395 O.D. $5.97/100PC LWZINT10 1/4" .510-.494 O.D. $7.84/100PC LWZINT004 5/16" .610-.588 O.D. $11.81/100PC LWZINT005 3/8" .694-.670 O.D. $16.25/100PC LWZINT006 7/16" .760-.740 O.D. $22.90/100PC LWZINT007 1/2" .900-.880 O.D. $24.79/100PC LWZINT008 5/8" 1.070-1.045 O.D. $58.94/100PC LWZINT010 3/4" 1.245-1.220 O.D. $79.40/100PC LWZINT012 1" 1.637-1.590 O.D. $144.36/100PC LWZINT016 
DIN 7980 - METRIC - Oil Coating Resists Corrosion - For use with Cheese and Pan Head Screwshttps://www.calfast.com/13127-lock-washer-hi-collar-... COMPARE THIS ITEM$12.92 - $56.75 /100PCFor Bolt Dia. Price PROD # M10 10.2 mm I.D. || 16.0 mm O.D. $12.92/100PC LWMB10MMHC M12 12.2 mm I.D. || 18.0 mm O.D. $18.89/100PC LWMB12MMHC M14 14.2 mm I.D. || 21.1 mm O.D. $33.66/100PC LWMB14MMHC M16 16.2 mm I.D. || 24.4 mm O.D. $38.98/100PC LWMB16MMHC M20 20.2 mm I.D. || 30.6 mm O.D. $56.75/100PC LWMBHC20MM 
DIN 7980 - METRIC - Zinc Plated - For use with Cheese/Pan Head Screwshttps://www.calfast.com/20596-lock-washer-hi-collar-... COMPARE THIS ITEM$30.37 /100PCFor Bolt Dia. Price PROD # M14 14.2 mm I.D. || 21.1 mm O.D. $30.37/100PC LWMZ14MMHC 
ASME / ANSI B18.21.1 -1999 - IMPERIAL - GRADE 8 - Salt Corrosion Resistant - Prevent nuts & bolts from looseninghttps://www.calfast.com/20598-lock-washer-helical-sp... COMPARE THIS ITEM$8.51 - $1,137.41 /100PCFor Bolt Dia. Price PROD # 1/4" .109 inch Width $8.51/100PC LWZ004G8 5/16" .125 inch Width $12.61/100PC LWZ005G8 3/8" .141 inch Width $20.64/100PC LWZ006G8 7/16" .156 inch Width $24.42/100PC LWZ007G8 1/2" .171 inch Width $39.57/100PC LWZ008G8 9/16" .188 inch Width $55.69/100PC LWZ009G8 5/8" .203 inch Width $70.34/100PC LWZ010G8 3/4" .234 inch Width $147.19/100PC LWZ012G8 7/8" .266inch Width $169.62/100PC LWZ014G8 1" .297 inch Width $139.18/100PC LWZ016G8 1-1/8" .328 inch Width $310.62/100PC LWZ018G8 1-1/4" .359 inch Width $491.41/100PC LWZ020G8 1-1/2" .422 inch Width $1,137.41/100PC LWZ024G8 
ASME / ANSI B18.21.1 -1999 - IMPERIAL - GRADE 8 - Oil Coating Resists Corrosion - Prevents nuts & bolts from looseninghttps://www.calfast.com/20602-lock-washer-helical-sp... COMPARE THIS ITEM$20.27 /EAFor Bolt Dia. Price PROD # 2" .375 inch Width $20.27/EA LWB032G8 
ASME / ANSI B18.21.1 - IMPERIAL - Superior Corrosion Resistance - To prevent nuts & bolts loosening in outdoor, wet & food prep applicationshttps://www.calfast.com/20597-lock-washer-helical-sp... COMPARE THIS ITEM$1.74 - $160.06 /100PCFor Bolt Dia. Price PROD # 3/8" .141 inch Width $40.12/100PC LWS188006 5/8" .203 inch Width $65.63/100PC LWS188010 3/4" .234 inch Width $132.91/100PC LWS188012 7/8" .266 Inch Width $160.06/100PC LWS188014 #4 .040 Inch Width $1.74/100PC LWS1884 #6 .047 Inch Width $3.08/100PC LWS1886 #8 .055 Inch Width $4.30/100PC LWS1888 #10 .062 Inch Width $6.54/100PC LWS188003 # 12 .070 Inch Width $4.64/100PC LWS18812 1/4" .109 Inch Width $16.32/100PC LWS188004 5/16" .125 Inch Width $25.84/100PC LWS188005 7/16" .156 Inch Width $20.45/100PC LWS188007 1/2" .171 Inch Width $78.89/100PC LWS188008 
ASME / ANSI B18.21.1 - IMPERIAL - Superior corrosion resistance to chemicals, food, mild acids, water & air - Prevent nuts & bolts looseninghttps://www.calfast.com/13173-lock-washer-external-t... COMPARE THIS ITEM$0.67 - $5.60 /100PCFor Bolt Dia. Price PROD # #4 .260-.245 O.D. $0.67/100PC LWS410EXT4 #8 .381-.365 O.D. $3.07/100PC LWS410EXT8 #10 .410-.395 O.D. $5.60/100PC LWS410EXT003 
DIN 127B - METRIC - Oil Coating Resists Corrosion - To prevent hex head cap screws DIN 931 & DIN 933 from looseninghttps://www.calfast.com/13120-lock-washer-helical-sp... COMPARE THIS ITEM$7.19 - $52.56 /100PCFor Bolt Dia. Price PROD # M6 6.1 mm I.D. || 11.8 mm O.D. $12.55/100PC LWMB10910MM M8 8.1 mm I.D. || 14.8 mm O.D. $7.19/100PC LWMB1098MM M10 10.2 mm I.D. || 18.1 mm O.D. $12.55/100PC LWMB10910MM M12 12.2 mm I.D. || 21.1 mm O.D. $18.40/100PC LWMB10912MM M14 14.2 mm I.D. || 24.1 mm O.D. $31.16/100PC LWMB10914MM M16 16.2 mm I.D. || 27.4 mm O.D. $39.82/100PC LWMB10916MM M20 20.2 mm I.D. || 33.6 mm O.D. $52.56/100PC LWMB10920MM M22 22.5 mm I.D. || 35.9 mm O.D. $11.32/100PC LWMB10922MM 
ASME / ANSI B18.21.1 - IMPERIAL - Highest Corrosion Resistance - To prevent nuts & bolts loosening in severe environmental applicationshttps://www.calfast.com/13166-lock-washer-helical-sp... COMPARE THIS ITEM$10.74 - $149.21 /100PC