M8 x 35mm Hex Head SEMS Screws - Anu-Lok 180 - Stainless Steel (A2) M8 x 35mm Hex Head SEMS Screws - Anu-Lok 180 - Stainless Steel (A2) (pack of 1000)

Accu Product Code (APC): NBK-SNHP3S-M8-35-ALK

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M8 x 35mm Hex Head SEMS Screws - Anu-Lok 180 - Stainless Steel (A2) M8 x 35mm Hex Head SEMS Screws - Anu-Lok 180 - Stainless Steel (A2) (pack of 1000)

Accu Product Code (APC): NBK-SNHP3S-M8-35-ALK

Key Features

Pre-assembled with spring and captive washers to streamline installation and reduce unique part count.
Anu-Lok 180 is an adjustable and reusable Nylon patch for medium duty applications.
Mimics Nylock with up to 5 re-uses and effective from -50°C to 120°C.

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1 Year Warranty Details.

Official AccuLock Product.

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Accu Product Code (APC): NBK-SNHP3S-M8-35-ALK
Thread Size: M8 (8 mm)
Length (L): 35 mm
Socket Size (J): 13 mm
Material: Stainless Steel - (A2-50) / Stainless Steel - (A2)
Finish: Thread Locking - Anu-Lok 180
Flat Washer Height (W): 1.6 mm
Flat Washer Width (OD): 18 mm
Fully Threaded: Yes
Head Height (H): 5.5 mm
Material Classification: Screw / Washers
Material Family: Stainless Steel
Spring Washer Thickness (Max) (T): 2 mm
Spring Washer Uncompressed Height (Max): 4 mm
System of Measurement: Metric
Thread Pitch: 1.25 mm
Weight per 100 Units: 2.1 kg

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M8 x 35mm Hex Head SEMS Screws - Anu-Lok 180 - Stainless Steel (A2) Description

The M8 x 35mm Hex Head SEMS Screws - Anu-Lok 180 - Stainless Steel (A2) has the following features:

Thread Locking - Anu-Lok 180 Finish
Flat Washer Height (W): 1.6 mm
Flat Washer Width (OD): 18 mm
Fully Threaded
Head Height (H): 5.5 mm
Length (L): 35 mm
Stainless Steel - (A2-50) / Stainless Steel - (A2)
Screw / Washers Material Classification
Stainless Steel Material Family
Socket Size (J): 13 mm
Spring Washer Thickness (Max) (T): 2 mm
Spring Washer Uncompressed Height (Max): 4 mm
System of Measurement: Metric
Thread Pitch: 1.25 mm
Thread Size: M8 (8 mm)

Discover more about the Hex Head SEMS Screws range.

Hex head SEMS screws are advanced integrated fasteners that combine a hexagonal bolt with one or more captive washers, typically a flat washer, spring washer, or both. These SEMS screws merge the functionality of a hex head bolt and the convenience of attached washers into a single unit, simplifying assembly and reducing the need for loose washers.

This unique design is particularly beneficial in high-speed manufacturing environments, such as electronics and automotive assembly, where precision component control and efficient assembly are crucial.

How Hex Head SEMS Screws Work

Hex head SEMS screws function by retaining the washers on the screw shaft during the production process. This ensures the washers stay in place throughout handling and installation, eliminating the need for separate washer alignment and reducing assembly time.

The hexagonal bolt head offers a robust, high-strength profile, while the drive allows for secure torque application using sockets or spanners. This design makes hex head SEMS screws an excellent choice for confined or automated environments where reliability and efficiency are essential.

Materials Hex Head SEMS Screws Are Made From

Accu’s hex head SEMS screws are made from A2-50 stainless steel, a material known for its tensile strength and corrosion resistance, making it ideal for industrial and assembly-line applications. The captive washers are also crafted from A2 stainless steel, ensuring material compatibility, corrosion resistance and long-lasting durability.

Additionally, we offer pre-applied thread locking patches through our AccuLock range, further streamlining assembly tasks while improving resistance to loosening.

This combination of materials ensures our hex head SEMS screws maintain consistent performance in both indoor and outdoor environments, with strong resistance to oxidation and wear.

Sizes and Types of Hex Head SEMS Screws Available

Accu supplies hex head SEMS screws in metric thread sizes ranging from M4 (4mm) to M12 (12mm), with lengths between 8mm and 50mm. Each screw features a hexagonal bolt head that allows for easy installation using a standard wrench or socket tool.

The screws are designed to provide excellent load distribution and clamping strength, making them suitable for a range of precision assembly applications.

FAQs

Q: What makes hex head SEMS screws different from regular hex head screws?

A: The key difference is the integrated washer assembly. While standard hex head bolts require separate washers, hex head SEMS screws come pre-fitted with washers, reducing installation time and streamlining part management.

Q: Can hex head SEMS screws be used in high-vibration environments?

A: Yes, particularly when configured with spring washers. These washers provide additional resistance to loosening, making the screws ideal for use in dynamic or vibration-prone applications.

Q: Are hex head SEMS screws suitable for automated assembly?

A: Absolutely. Their integrated design reduces the number of components, simplifying automated assembly and improving toolpath programming for robotic systems.

Q: Can hex head SEMS screws be reused?

A: Yes, as long as there are no signs of damage. In most cases the screw itself can generally be reused, but the spring washer may lose its tension after repeated use and should be inspected for wear before reinstallation.

Shipping Information

Shipping Destinations:

Worldwide view delivery information

Weight (100 items):

2.1kg

Component History

Product First Available:

Tuesday, November 11, 2025

Stock Last Updated:

11:07 PMWednesday, June 3, 2026

Specification Last Updated:

Wednesday, June 3, 2026

Barcodes

APC (Accu Product Code):

NBK-SNHP3S-M8-35-ALK

EAN13 (International Article No.):

5063765342834

ASIN (Amazon Stock Identification No.):

ASIN not defined.

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Thread Size

Length (L)

Socket Size (J)

Material

Finish

Flat Washer Height (W)

Flat Washer Width (OD)

Fully Threaded

Head Height (H)

Material Classification

Material Family

Spring Washer Thickness (Max) (T)

Spring Washer Uncompressed Height (Max)

System of Measurement

Thread Pitch

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M8 x 35mm Hex Head SEMS Screws - Anu-Lok 180 - Stainless Steel (A2) M8 x 35mm Hex Head SEMS Screws - Anu-Lok 180 - Stainless Steel (A2) (pack of 1000)

M8 x 35mm Hex Head SEMS Screws - Anu-Lok 180 - Stainless Steel (A2) M8 x 35mm Hex Head SEMS Screws - Anu-Lok 180 - Stainless Steel (A2) (pack of 1000)

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