Nord-Lock Large OD Locking Washers, Carbon Steel

Brand: NORD-LOCK

Nord-Lock washers are designed to prevent threaded fasteners from loosening. Each Nord-Lock consists of two washers with interlocking faces. The cam angle on the interlocking faces is greater than the thread pitch angle, effectively increasing the torque required to loosen the fastener. Mild carbon steel with zinc flake coating for corrosion resistance. Each is enough for one nut or one bolt (order 2 to lock both ends of a nut-and-bolt joint).

The NLCS-SP Series washers have a relatively large OD, similar to a standard flat washer. They are designed for use under a standard hex bolt head or a nut. Note that this size is not appropriate for use under a socket-head ("Allen") cap screw in a counterbored hole. (The smaller OD of the Nord-Lock NLCS Series matches the OD of standard socket-head screw heads). Install a Nord-Lock in place of a flat washer only. Using a Nord-Lock with a flat washer will defeat the locking action.

Nord-Lock NLCS-SP Series Locking Washers for Nuts and Hex-Head Bolts
Nominal Size	SAE Size	Metric Size	ID (inch)	ID (metric)	OD (inch)	OD (metric)	Thickness (inch)	Thickness (metric)	Part No.
M5	#10	M5	0.21"	5.3mm	0.43"	10.9mm	0.07"	1.8mm	NLCS‑SP‑M5
M6		M6	0.26"	6.6mm	0.53"	13.5mm	0.10"	2.5mm	NLCS-SP-M6
1/4"	1/4"		0.28"	7.1mm	0.53"	13.5mm	0.10"	2.5mm	NLCS‑SP‑.250
M8	5/16"	M8	0.34"	8.6mm	0.65"	16.5mm	0.10"	2.5mm	NLCS-SP-M8
3/8"	3/8"		0.41"	10.4mm	0.83"	21.1mm	0.10"	2.5mm	NLCS‑SP‑.375
M10		M10	0.42"	10.7mm	0.83"	21.1mm	0.10"	2.5mm	NLCS‑SP‑M10
M12		M12	0.51"	13mm	1.00"	25.4mm	0.13"	3.3mm	NLCS‑SP‑M12
1/2"	1/2"		0.53"	13.5mm	1.00"	25.4mm	0.13"	3.3mm	NLCS‑SP‑.500
M14	9/16"	M14	0.60"	15.2mm	1.21"	30.7mm	0.13"	3.3mm	NLCS‑SP‑M14
M16	5/8"	M16	0.67"	17mm	1.21"	30.7mm	0.13"	3.3mm	NLCS‑SP‑M16
M18		M18	0.77"	19.6mm	1.36"	34.5mm	0.13"	3.3mm	NLCS‑SP‑M18
3/4"	3/4"		0.79"	20.1mm	1.54"	39.1mm	0.13"	3.3mm	NLCS‑SP‑.750
M20		M20	0.84"	21.3mm	1.54"	39.1mm	0.13"	3.3mm	NLCS‑SP‑M20
M22	7/8"	M22	0.92"	23.4mm	1.65"	41.9mm	0.18"	4.6mm	NLCS‑SP‑M22
M24		M24	1.0"	25.4mm	1.91"	48.5mm	0.18"	4.6mm	NLCS‑SP‑M24
1"	1"		1.1"	27.9mm	1.91"	48.5mm	0.18"	4.6mm	NLCS‑SP‑1.00

Enter desired order quantities below, then click the "Add selected quantities to cart" button.

Order Qty	Part No.	Desc.	Price	Stock Status
	NLCS-SP-.250 Condition: New SKU: 85082	1/4" Nord-Lock Large OD Steel Washer, 0.28 ID x 0.53 OD	$1.11	In Stock
	NLCS-SP-.375 Condition: New SKU: 85083	3/8" Nord-Lock Large OD Steel Washer, 0.41 ID x 0.83 OD	$2.13	In Stock
	NLCS-SP-.500 Condition: New SKU: 85084	1/2" Nord-Lock Large OD Steel Washer, 0.53 ID x 1.00 OD	$2.99	In Stock
	NLCS-SP-.750 Condition: New SKU: 85085	3/4" Nord-Lock Large OD Steel Washer, 0.79 ID x 1.54 OD	$7.69	In Stock
	NLCS-SP-1.00 Condition: New SKU: 85086	1.0" Nord-Lock Large OD Steel Washer, 1.10 ID x 1.91 OD	$13.64	In Stock
	NLCS-SP-M5 Condition: New SKU: 85087	M5 (#10) Nord-Lock Large OD Steel Washer, 0.21 ID x 0.43 OD	$1.05	In Stock
	NLCS-SP-M6 Condition: New SKU: 85088	M6 Nord-Lock Large OD Steel Washer, 0.26 ID x 0.53 OD	$1.11	In Stock
	NLCS-SP-M8 Condition: New SKU: 85089	M8 (5/16") Nord-Lock Lrg OD Steel Washer, 0.34 ID x 0.65 OD	$1.27	In Stock
	NLCS-SP-M10 Condition: New SKU: 85090	M10 Nord-Lock Large OD Steel Washer, 0.42 ID x 0.83 OD	$2.13	In Stock
	NLCS-SP-M12 Condition: New SKU: 85091	M12 Nord-Lock Large OD Steel Washer, 0.51 ID x 1.00 OD	$2.99	In Stock
	NLCS-SP-M14 Condition: New SKU: 85092	M14 (9/16") Nord-Lock Lrg OD Steel Washer, 0.60 ID x 1.21 OD	$4.49	In Stock
	NLCS-SP-M16 Condition: New SKU: 85093	M16 (5/8") Nord-Lock Lrg OD Steel Washer, 0.67 ID x 1.21 OD	$4.49	In Stock
	NLCS-SP-M18 Condition: New SKU: 85094	M18 Nord-Lock Large OD Steel Washer, 0.77 ID x 1.36 OD	$6.99	In Stock
	NLCS-SP-M20 Condition: New SKU: 85095	M20 Nord-Lock Large OD Steel Washer, 0.84 ID x 1.54 OD	$7.69	In Stock
	NLCS-SP-M22 Condition: New SKU: 85097	M22 (7/8") Nord-Lock Lrg OD Steel Washer, 0.92 ID x 1.65 OD	$11.29	In Stock
	NLCS-SP-M24 Condition: New SKU: 85096	M24 Nord-Lock Large OD Steel Washer, 1.00 ID x 1.91 OD	$13.64	In Stock

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Nord-Lock Large OD Locking Washers, Carbon Steel

Order Qty

Part No.

Desc.

Price

Stock Status

$1.11

$2.13

$2.99

$7.69

$13.64

$1.05

$1.11

$1.27

$2.13

$2.99

$4.49

$4.49

$6.99

$7.69

$11.29

$13.64

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