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$27.99
msymsyu Nylock Nuts M4 Hex Nuts 60 Pcs Carbon Steel M4 Self-Locking Nut Anti-Loosening Nut Suitable for Various Industries Such as Electrical Automotive Manufacturing and Furniture Assembly — image 1
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msymsyu Nylock Nuts M4 Hex Nuts 60 Pcs Carbon Steel M4 Self-Locking Nut Anti-Loosening Nut Suitable for Various Industries Such as Electrical Automotive Manufacturing and Furniture Assembly

$27.99

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About this item
  • 【Highly-effective in Anti-Loosening】The built-in nylon locking ring in the nut Inhibits nylock nuts M4 from loosening due to vibration or shock through friction resistance, ensuring Nylon Insert long-term stability, and nylon insert hex lock nuts can withstand a wide range of temperatures to meet the needs of most industrial scenarios
  • 【Rugged and durable】The nuts M4 are made of Premium carbon steel with black oxidised surface to enhance M4 nylock nuts rust and corrosion-resistance, as well as aesthetics, making Self Locking Nut suitable for outdoor or wet environments
  • 【Easy to install】M4 Nylock Nuts can be tightened by hand or with a conventional spanner without additional tools, and the locking nuts automatically creates a locking force after the first tightening
  • 【Widely compatible】Nylock Nuts standard thread specifications, M4 locking nuts adaptable to standard bolts, strong generality, nylon insert hex lock nuts applicable to machinery, automotive, electronics and other multi-industry
  • 【Package content】You will receive 60pcs M4 black carbon steel nylock jam nuts with 4mm inner diameter, you can easily install nylock nuts in narrow spaces to meet your installation needs
Product description

Our black carbon steel nylon hex lock nuts are designed for applications where high strength and anti-loosening properties are required. Whether it's machinery subject to frequent vibration, high-speed vehicle components or building structures that require long-term stability, these nylon insert hex lock nuts provide reliable fastening The unique anti-loosening design of the black carbon steel anti-loosening nut M4 hinders the nut from loosening due to vibration, shock or prolonged use, making nylock nut M4 sideal for machinery, automotive, industrial equipment and DIY projects Anti-loosening technology: Nylon locking type: Self Locking Nut Built-in nylon ring, generating friction resistance when tightening, hindering spontaneous loosening Precision Thread: Locking Nuts M4 threaded structure bites the bolt, forming mechanical locking and excellent anti-vibration performance Surface treatment: Nylock nut M4 black oxide layer not only enhances rust hinder ability, but also gives Self Locking Nut a beautiful matte appearance Technical parameters Material: Carbon Steel (surface black oxidation treatment) Model: M4 Packing quantity: 60 Stk Product Specifications: M2, M3, M4, M5, M6, M8, M10, M12, M16 Application Scenario: Automobile/motorcycle parts fastening Industrial machinery, electrical equipment Steel structure construction, bridge Furniture, fitness equipment assembly Internal fixing of electronic products

Product details
Brand
msymsyu
Manufacturer
MengShengYun
Material
Carbon Steel
Colour
Black
Size
M4*60 pcs
Part number
MSY-021-05

Customer reviews

What customers say about Bigamart

10 Trustpilot reviews total, with 2 shown at a time.

Trustpilot
Excellent
4.5 average rating
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S
Sigalit
🇮🇱 · January 2026

I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.

V
Verified buyer
🇦🇺 · November 2025

The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.

Showing 12 of 10 reviews

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