Home Machine Screws Round Head Screw Slotted Round Head Bolt 5-40 x 3/8" Round Head Slotted Machine Screw Steel Blue Zinc Plated

5-40 x 3/8" Round Head Slotted Machine Screw Steel Blue Zinc Plated

Screw
Screw
Part No. MRL0506Z rohs Rating:

material Blue Zinc Plated Steel
Ship Date 2026-11-17
Head Round Head
drive Slot   0.035-0.043"
Head Diameter 0.217-0.236" inch
Head Height 0.083 -0.095" inch
Thread 5-40
Length 3/8 inch
Unit Price USD$ 0.025 /pcs
Unit Weight 0.700 g
Quantity pcs
Amount USD$ Total Amount USD$
Amount USD$ Total Amount USD$
  
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Item Information

Why Choose MRL0506Z?

MRL0506Z is a 5-40 Round Head head Slot drive screw with 3/8 inches length, featuring a Blue Zinc Plated Steel finish. Compared to alternative finishes in the same specification such as MRL0506S (SUS304 Stainless Steel), MRL0506B (Black Zinc Plated Steel), the Blue Zinc Plated Steel of MRL0506Z offers moderate corrosion resistance with a distinctive blue iridescent appearance, commonly used in automotive assembly, machinery, and general industrial fastening. The Round Head head design ensures optimal load distribution across the mating surface, while the Slot drive allows efficient torque transmission during installation. Each MRL0506Z screw is manufactured to industry standards, RoHS compliant, and supplied with material test reports (MTR) for full quality traceability.

5-40 x 3/8" Round Head Slotted Machine Screw Steel Blue Zinc Plated
MRL0506Z This part demension will be same as the drawing indicate below, length tolerance will be ±0.5 .
It is Round Head with Slot drive, 5-40 Thread and 3/8 inch Length .
material Blue Zinc Plated Steel, Finsh is Rohs Blue Zinc which has good function of anti-corrosion .
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BUY MRL0506Z - 5-40 x 3/8 Round Head Slotted Machine Screw - Black Zinc Steel for Precision Assembly | Superneer today,high quality product and best service will be provided by superneer.Each order will be made shippment on time.
Different Finish :
5-40 x 3/8 inch
5-40 x 3/8 inch
MRL0506S
SUS304 Stainless Steel
5-40 x 3/8 inch
5-40 x 3/8 inch
MRL0506Z
Blue Zinc Plated Steel
5-40 x 3/8 inch
5-40 x 3/8 inch
MRL0506B
Black Zinc Plated Steel
5-40 x 3/8" Round Head Slotted Machine Screw Steel Blue Zinc Plated
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Payment & Trasportation 5-10 days

Payment Method: T/T & Paypal and other payment method

Shipment Method: Air Express , Air Freight, Sea Shippment

How to Order

1. Order online directly, made payment via Paypal or bank transfer.

2. Superneer arrange production according to drawing,all demensions are within drawing specification.

3. Parts ready, ship to customer.

Frequently Asked Questions about MRL0506Z

What is MRL0506Z screw?

MRL0506Z is a 5-40 Round Head head Slot drive screw made of Blue Zinc Plated Steel, manufactured by Superneer Limited. It has a length of 3/8 inches and is commonly used in electronics, watches, precision instruments, and 3D printers.

What are the specifications of MRL0506Z?

The MRL0506Z screw features thread size 5-40, length of 3/8 inches, head type Round Head (head diameter 0.217-0.236 inches), drive type Slot (drive size 0.035-0.043"), and is made of Blue Zinc Plated Steel.

What material is the MRL0506Z screw made of?

The MRL0506Z screw is made of Blue Zinc Plated Steel. Superneer provides material test reports (MTR) and RoHS compliance certificates for all products. Blue Zinc Plated Steel offers excellent corrosion resistance and mechanical strength.

What is the thread size of MRL0506Z?

The MRL0506Z screw has a 5-40 thread. This is a UNC (Unified National Coarse) thread with 5-40 specification, widely used in North American applications.

What are MRL0506Z screws used for?

MRL0506Z Round Head head Slot drive screws are used in electronics assembly, PCB mounting, precision instruments, watches, 3D printers, optical devices, medical equipment, and consumer products where reliable fastening with Round Head head aesthetics is required.

What is the MOQ and price for MRL0506Z?

The minimum order quantity (MOQ) for MRL0506Z is 10,000 pieces. The unit price is $0.025 USD for MOQ quantity. Larger quantities receive discounted pricing. Contact [email protected] for custom quotes.

What is the lead time and shipping for MRL0506Z?

The lead time for MRL0506Z is 15-25 days for production. Shipping to USA takes 5-15 days via sea freight, with shipping cost starting from $50 USD. Air freight is available for urgent orders. DDP and FOB terms are both available.

What is the metric equivalent of 5-40 thread?

The 5-40 thread is approximately equivalent to M3 (approx). When substituting inch screws with metric screws, always verify the actual diameter and pitch compatibility.

What head type does MRL0506Z use and why?

The MRL0506Z uses a Round Head head type. Round Head head provides a specific head design optimized for its intended application. This head type is selected based on the specific application requirements for load distribution, aesthetics, and accessibility.

How to choose the right screw size for my application?

To choose the right screw: 1) Determine the required thread size based on the tapped hole or nut; 2) Select the appropriate length based on the material thickness; 3) Choose the head type based on clearance and aesthetics; 4) Select the drive type based on torque requirements; 5) Choose the material based on environmental conditions. For MRL0506Z (5-40, 3/8 inches), ensure your application requires this specific size.

What is the difference between MRL0506Z and similar parts?

MRL0506Z uses Blue Zinc Plated Steel finish, while alternative variants in the same thread/length specification include MRL0506S (SUS304 Stainless Steel), MRL0506B (Black Zinc Plated Steel). The Blue Zinc Plated Steel of MRL0506Z is specifically selected because it offers moderate corrosion resistance with a distinctive blue iridescent appearance, commonly used in automotive assembly, machinery, and general industrial fastening. This distinction makes MRL0506Z the preferred choice when these properties align with your application requirements.

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