A locking system that maintains bolt fixation through axial force (preload) rather than friction.
The "HEICO-LOCK(R) Wedge Locking System" protects bolts from rotational loosening not through friction, but by using "axial force (preload)." Born in Germany, HEICO-LOCK(R) provides high anti-loosening performance and reliability even under intense vibrations and dynamic loads. The anti-loosening effect of the HEICO-LOCK(R) series has been proven through vibration tests in accordance with international standards: - German Industrial Standards (DIN 65151, DIN 25201-4) - U.S. Aerospace Standards (NASM 1312-7) 【Features】 ■ The inner surface of the washer has a wedge-shaped cam surface, while the outer side has a radial tooth surface. ■ The radial tooth surface on the outer side of the washer firmly spikes into the underside of the bolt/nut and the material being fastened when the bolt is tightened. ■ The movement of the system occurs only between the wedge-shaped cam surfaces on the inner side of the washer. ■ The movement at the wedge-shaped cam surface effectively increases the axial force of the bolt. ■ It provides reliable fastening strength under dynamic loads. *For more details, please download the PDF or contact us.
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basic information
**Product Overview (Excerpt)** ■ HEICO-LOCK® Wedge Lock Washer - Steel Part Number: HLS-8 / HLB-8 - Stainless Steel Part Number: HLS-8S / HLB-8S ■ HEICO-LOCK® Combination Washer - Steel Part Number: HKS-8 / HKB-8 - Stainless Steel Part Number: HKS-8S / HKB-8S ■ HEICO-LOCK® Wedge Lock Nut - Steel Part Number: HLM-8 ■ HEICO-LOCK® Ring Lock Washer - Steel Part Number: HLRS-8 / HLRB-8 - Stainless Steel Part Number: HLRS-8S / HLRB-8S ■ HEICO-LOCK® HLK Washer - Steel Part Number: HLK-12 *For more details, please download the PDF or contact us.*
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For more details, please download the PDF or contact us.
Detailed information
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【Reading and Rules for Model Numbers】 (1) Series: ・HL〈Wedge Lock Washer〉 ・HK〈Combination Washer〉 ・HLM〈Wedge Lock Nut〉 ・HLR〈Ring Lock Washer〉 (2) Outer Diameter Type: ・S〈Narrow Type (Standard)〉 ・B〈Wide Type〉 (3) Nominal Diameter (4) Material: ・No Marking〈Made of Steel〉 ・S〈Made of Stainless Steel〉 ・SMO354〈254SMO(R)〉 ・ALL718〈Alloy718〉
Line up（13）
| Model number | overview |
|---|---|
| HLS-▢ | HEICO-LOCK(R) Wedge Lock Washer, Size: M3 to M76 (numbers will be inserted in ▢), made of steel, standard width (narrow) |
| HLB-▢ | HEICO-LOCK(R) Wedge Lock Washer, Size: M3.5 to M36 (numbers will be inserted in ▢), made of steel, wide |
| HLS-▢S | HEICO-LOCK(R) Wedge Lock Washer, Size: M3 to M76 (numbers will be inserted in ▢), made of stainless steel, standard width (narrow) |
| HLB-▢S | HEICO-LOCK(R) Wedge Lock Washer, Size: M3.5 to M36 (numbers will be inserted in ▢), made of steel, wide |
| HKS-▢ | HEICO-LOCK(R) Combination Washer, Size: M8 to M16 (numbers will be inserted in ▢), made of steel, standard width (narrow) |
| HKB-▢ | HEICO-LOCK(R) Combination Washer, Size: M8 to M16 (numbers will be inserted in ▢), made of steel, wide |
| HKS-▢S | HEICO-LOCK(R) Combination Washer, Size: M8 to M16 (numbers will be inserted in ▢), made of stainless steel, standard width (narrow) |
| HKB-▢S | HEICO-LOCK(R) Combination Washer, Size: M8 to M16 (numbers will be inserted in ▢), made of stainless steel, wide |
| HLM-▢ | HEICO-LOCK(R) Wedge Lock Nut, Size: M6 to M27 (numbers will be inserted in ▢), made of steel, wide |
| HLRS-▢ | HEICO-LOCK(R) Ring Lock Washer, Size: M5 to 1" (numbers will be inserted in ▢), made of steel, standard width (narrow) |
| HLRB-▢ | HEICO-LOCK(R) Ring Lock Washer, Size: M4 to M20 (numbers will be inserted in ▢), made of steel, wide |
| HLRS-▢S | HEICO-LOCK(R) Ring Lock Washer, Size: M5 to 1" |
| HLRB-▢S | HEICO-LOCK(R) Ring Lock Washer, Size: M4 to M20 (numbers will be inserted in ▢), made of stainless steel, wide |
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Company information
The German company HEICO has celebrated its 120th anniversary in 2020 since its founding in 1900. This is entirely thanks to your long-standing support, for which we are grateful. Since its establishment in 1900, HEICO has been manufacturing fastening components for 120 years. Our company is committed to continuous improvement of production processes and equipment as a fundamental principle to create the highest quality products "Made in Germany," and we never neglect our efforts to enhance innovation for quality improvement. To improve product quality and production efficiency, we actively develop and manufacture our own unique tools and processing machines, implement in-house heat treatment and surface processing, and introduce process control systems. Moving forward, we aim to develop products that achieve "reliable, safe, and easy fastening," responding to our customers' needs based on the extensive know-how cultivated from our years of experience and achievements.