HEICO-LOCK® Wedge Lock Washers

The self-loosening of bolted joints is one of the most commonly occuring failure modes in the operation of machines and systems. HEICO-LOCK® Wedge Lock Washers prevent loosening of the bolted joint by providing a safe and reliable bolt securing system - even for extremes of vibration or dynamic loads.

Features:

Certified system for securing bolts, working at low and high preload levels
Particularly suitable for dynamic loads – including when using lubricants
Very easy to install and remove (Wedge Lock Washers are supplied as a pre-assembled pair)
Can be re-used
Also suitable for high-tensile bolts of 8.8, 10.9 and 12.9 and their respective nuts
Available in steel or stainless steel with narrow or wide bearing surfaces – other materials are available upon request
Available from M3 – M76 and ¼” – 3” - custom sizes upon request

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Material

External Diameter (mm)

Inside Diamter (mm)

Item #	Material	M	External Diameter	UNC	Inside Diamter	Box QTY (Pairs)

HLS-36	N/A Steel	N/A 36 max	N/A 55 mm	N/A 1 3/8“	N/A 37.4 mm	N/A 25
HLS-39	N/A Steel	N/A 39 max	N/A 58.5 mm	N/A 1 1/2“	N/A 40.4 mm	N/A 25
HLS-4	N/A Steel	N/A 4 max	N/A 7.6 mm	N/A #8	N/A 4.4 mm	N/A 200
HLS-42	N/A Steel	N/A 42 max	N/A 63 mm	N/A	N/A 43.2 mm	N/A 25
HLS-45	N/A Steel	N/A 45 max	N/A 70 mm	N/A 1 3/4“	N/A 46.2 mm	N/A 25
HLS-48	N/A Steel	N/A 48 max	N/A 75 mm	N/A	N/A 49.6 mm	N/A 25
HLS-5	N/A Steel	N/A 5 max	N/A 9 mm	N/A #10	N/A 5.4 mm	N/A 200
HLS-52	N/A Steel	N/A 52 max	N/A 80 mm	N/A 2“	N/A 53.6 mm	N/A 1
HLS-56	N/A Steel	N/A 56 max	N/A 85 mm	N/A 2 1/4“	N/A 59.1 mm	N/A 1
HLS-6	N/A Steel	N/A 6 max	N/A 10.8 mm	N/A	N/A 6.5 mm	N/A 200
HLS-60	N/A Steel	N/A 60 max	N/A 90 mm	N/A	N/A 63.1 mm	N/A 1
HLS-64	N/A Steel	N/A 64 max	N/A 95 mm	N/A 2 1/2“	N/A 67.1 mm	N/A 1
HLS-68	N/A Steel	N/A 68 max	N/A 100 mm	N/A	N/A 71.1 mm	N/A 1
HLS-72	N/A Steel	N/A 72 max	N/A 105 mm	N/A	N/A 75.1 mm	N/A 1
HLS-76	N/A Steel	N/A 76 max	N/A 110 mm	N/A 3“	N/A 79.1 mm	N/A 1
HLS-8	N/A Steel	N/A 8 max	N/A 13.5 mm	N/A 5/16“	N/A 8.6 mm	N/A 200

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16.6
18.5
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8.6

Material

External Diameter (mm)

Inside Diamter (mm)

Item #

Material

M

External Diameter

UNC

Inside Diamter

Box QTY (Pairs)