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Internal Serrated Lock Washer, Carbon Steel 65Mn, Zinc Plated, M8, Pkg Qty 1000

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Industrial · SKU: AA0383115

Internal Serrated Lock Washer, Carbon Steel 65Mn, Zinc Plated, M8, Pkg Qty 1000

This internal serrated lock washer is manufactured from 65Mn carbon steel, heat-treated to a minimum hardness of 400 HV for reliable, vibration-resistant fastening.

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$29.99
$0.03/each(1000 pcs/pkg)

Volume Pricing - Buy More, Save More

QuantityDiscountUnit Price
1 - 10-$29.99
11 - 50-5%$28.49
51+-10%$26.99
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Quick Answer

How Buyers Should Evaluate Internal Serrated Lock Washer, Carbon Steel 65Mn, Zinc Plated, M8, Pkg Qty 1000

This internal serrated lock washer is manufactured from 65Mn carbon steel, heat-treated to a minimum hardness of 400 HV for reliable, vibration-resistant fastening. Use the quick checks below to decide whether direct checkout is enough or whether an RFQ will reduce sourcing risk.

Quick Spec Check

  • System of Measurement: Metric
  • Material Grade/Class: 65Mn
  • Material: Carbon Steel

Purchase Details

  • Online price starts at $29.99.
  • Minimum order quantity: 1 unit.
  • Pack quantity: 1000 / Each.
  • Lead time: 2-3 weeks.

Use RFQ When

  • Use RFQ when you need bulk pricing, alternate pack sizes, or multi-SKU comparison.
  • Request support when fit, material, or substitute selection needs confirmation before order.
  • Escalate to sourcing when timeline, freight, or stocking strategy matters more than one-off checkout speed.

Technical Specifications

System of MeasurementMetric
Material Grade/Class65Mn
MaterialCarbon Steel
Thread SizeM8
FinishZinc Plated
LengthWasher
Head TypeWasher
Drive TypeWasher
Product Details

Full Description

Application context, construction notes, and selection details for evaluating fit before purchase or repeat ordering.

Internal Serrated Lock Washer, Carbon Steel 65Mn, Zinc Plated, M8, Pkg Qty 1000

Overview

This internal serrated lock washer is engineered for high-performance, vibration-resistant fastening in demanding industrial and assembly applications. Manufactured from 65Mn carbon steel and heat-treated for strength, it provides a secure, long-lasting lock that prevents bolt and nut loosening under dynamic loads, shock, and vibration. The zinc plating offers a protective finish for enhanced corrosion resistance in various environments. Packaged in a bulk quantity of 1000 pieces, this washer supports efficient production workflows and inventory management.

Key Features

Internal serration design bites into both the fastener head and the bearing surface Constructed from hardened 65Mn carbon steel for superior strength and durability Heat-treated to a minimum hardness of 400 HV for reliable performance Zinc-plated finish provides a protective barrier against rust and corrosion Prevents loosening caused by vibration, thermal cycling, and dynamic stresses Bulk packaging of 1000 units ensures cost-effective supply for high-volume operations

Specifications

System of Measurement: Metric

Material

Carbon Steel Material Grade/Class: 65Mn Thread Size: M8 (fits approximately 0.315 inch bolt diameter) Finish: Zinc Plated Product Type: Lock Washer Hardness: 400 HV minimum Locking Mechanism: Internal Serrated Package Quantity: 1000

Applications

General manufacturing and assembly lines Heavy equipment and machinery maintenance Automotive component assembly and repair Electrical panel and enclosure fabrication Structural frameworks and metalworking Any application requiring a secure, vibration-proof fastener lock for M8 bolts

Frequently Asked Questions

What are the key specifications for this M8 internal serrated lock washer?
This washer is manufactured from 65Mn carbon steel, heat-treated to a hardness of 400HV, and features a zinc-plated finish for corrosion resistance. Its metric M8 size corresponds to a nominal inner diameter of approximately 0.315 inches, designed to fit an M8 screw.
What are the typical applications for this type of lock washer?
These washers are designed for use in assemblies where vibration resistance is critical, such as in automotive components, machinery, and electrical enclosures. The internal serrations bite into both the fastener and the work surface to prevent loosening under dynamic loads.
How is this product packaged for order, and what is the minimum quantity?
This item is sold in bulk packaging with a standard pack quantity of 1000 washers per box. This high-volume packaging is intended for production or maintenance environments with significant, recurring demand for this specific fastener.
Internal Serrated Lock Washer, Carbon Steel 65Mn, Zinc Plated, M8, Pkg Qty 1000 | Machrio