Best Carburetor Self-Tapping Screws of 2026

Robert Reyes Avatar
Robert Reyes
Last Updated: Jan 10, 2026

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Carburetor self-tapping screws are a type of screw used to fasten carburetors to engines. These screws are designed to drill their own hole as they are screwed in, eliminating the need for pre-drilling. They are made of high-quality materials, such as stainless steel or zinc-plated steel, to ensure durability and resistance to corrosion. Carburetor self-tapping screws come in a variety of sizes and lengths to fit different carburetor models and engine types. They are an essential component for any carburetor installation or repair project.

At a Glance: Our Top Picks

NEBOO 2 Pack Throttle Stop Screw for Polaris Cover #TOP 1
NEBOO 2 Pack Throttle Stop Screw for Polaris
ftb score rating icon 9.8
TONRYCUE Air Fuel Mixture Screw for Keihin FCR Carburetors Cover #TOP 2
TONRYCUE Air Fuel Mixture Screw for Keihin FCR Carburetors
ftb score rating icon 9.7
TUSK Fuel Mixture Screw for KTM 530 EXC-R Cover #TOP 3
TUSK Fuel Mixture Screw for KTM 530 EXC-R
ftb score rating icon 9.5

Top 10 Carburetor Self-Tapping Screws

#TOP 1

NEBOO 2 Pack Throttle Stop Screw for Polaris

0455403
0.3 inches
NEBOO 2 Pack Throttle Stop Screw for Polaris Cover
2 Pack 0455403 Screw w/Jam Nut Throttle Stop for 0451788 Replacement for Polaris Sportsman 90/110, Outlaw 50/90/110, Predator 50 Vehicle

The NEBOO Throttle Stop Screw is a reliable replacement part designed specifically for several Polaris models, including Sportsman, Outlaw, and Predator vehicles. This screw comes with a jam nut, making it easy to install, so you can quickly fix or maintain your vehicle without hassle. Made from durable materials, it’s built to handle tough off-road conditions, ensuring it lasts through your adventures. Plus, it perfectly fits and functions just like the original part, so you won’t have to worry about compatibility or performance issues when you use it.

What We Like
Durable construction
Easy installation
Wide model compatibility
Reliable replacement
#TOP 2

TONRYCUE Air Fuel Mixture Screw for Keihin FCR Carburetors

YFZ450 Air Fuel Mixture Screw
Black
TONRYCUE Air Fuel Mixture Screw for Keihin FCR Carburetors Cover
Air Fuel Mixture Screw for Keihin FCR Carb for Honda CRF150R CRF150R for Yamaha YFZ450 YZ250F YZ426F YZ450F for Kawasaki KLX450R KX250F KX450F for Suzuki RMZ250 RAMZ450 (Black)

The TONRYCUE Mixture Screw is designed to fit a wide range of popular dirt bikes and ATVs, including models from Honda, Yamaha, Kawasaki, and Suzuki. This screw is specifically made for Keihin FCR carburetors, helping you fine-tune your engine’s air-fuel balance for better performance. Its compatibility with multiple bike models means you can rely on a single replacement part for various machines you own. Made from durable 6061-T6 aluminum, this screw ensures long-lasting use and a perfect fit, making it a convenient and reliable upgrade for your carburetor.

What We Like
Wide bike compatibility
Fits Keihin FCR carburetors
Durable aluminum material
Easy replacement part
#TOP 3

TUSK Fuel Mixture Screw for KTM 530 EXC-R

TUSK
114-034-001038a3-76e98b
TUSK Fuel Mixture Screw for KTM 530 EXC-R Cover
TUSK Fuel Mixture Screw Orange for KTM 530 EXC-R 2008-2011

The TUSK Fuel Screw is designed to replace the hard-to-adjust stock fuel screw on your KTM 530 EXC-R, making tuning your carburetor easier. It features an easy-grip knob with laser-etched numbers, so you can make precise adjustments without any guesswork. The package includes a new spring, washer, and O-ring, ensuring a complete and hassle-free installation. Crafted from durable 6061-T6 aluminum, this fuel screw offers long-lasting performance and fits most Keihin FCR carburetors, giving you reliable control over your fuel mixture.

What We Like
Easy grip knob
Laser-etched adjustment numbers
Complete installation kit
Durable aluminum construction
#TOP 4

OXCANO Idle Adjustment Screw for PE28/30 Carburetor

OXld-WLHDV
OXCANO Idle Adjustment Screw for PE28/30 Carburetor Cover
OXCANO Idle Adjustment Screw Compatible with PE28mm PE30mm Carburetor

The OXCANO Idle Screw is designed to fit NIBBI PE28 and PE30 carburetors, making it a perfect replacement part for your carburetor adjustments. This screw comes as a single piece, so you get exactly what you need without extra parts. Sized specifically for 28mm and 30mm carburetors, it ensures a precise fit for these models. Made from high-quality materials, this screw is both lightweight and durable, giving you long-lasting performance and reliability. If you want an easy-to-install and sturdy idle adjustment screw, the OXCANO Idle Screw is a smart choice for maintaining your carburetor’s optimal function.

What We Like
Compatible with PE28/PE30 carburetors
Single-piece package
Precise 28mm/30mm size
Lightweight and durable
#TOP 5

Tusk Fuel Mixture Screw for Honda CRF150R

TUSK
L35-731
Black
Tusk Fuel Mixture Screw for Honda CRF150R Cover
Tusk Fuel Mixture Screw Black Compatible with Honda CRF150R Expert 2007-2009, 2012-2026/Honda CRF150R 2007-2009, 2012-2026

The Tusk Fuel Screw is designed specifically for Honda CRF150R models from 2007 to 2009 and 2012 to 2026, as well as the CRF150R Expert series within the same years. This product is not CARB compliant, which means it may not meet certain emissions standards, so you should check local regulations before use. The screw is part of the carburetor self-tapping screws category, making it easy to install without needing extra tools or modifications. To ensure proper fitment, you should refer to the provided fitment image to confirm it suits your specific vehicle model. This makes maintenance and repairs more straightforward for you.

What We Like
Honda CRF150R compatibility
Easy self-tapping installation
Clear fitment guidance
Carburetor screw replacement
#TOP 6

NICECNC Fuel Adjustment Screw for Suzuki DRZ400

NICECNC10204-FMS002-GL
Gold
NICECNC Fuel Adjustment Screw for Suzuki DRZ400 Cover
NICECNC Gold Fuel Adjustment Screw Compatible with Suzuki DRZ400S 2000-2022 DRZ400SM 2000-2022 Adjustable Fuel Screw 6061-T6 Aluminum See Fitment

The NICECNC Fuel Screw is crafted from durable 6061-T6 aluminum, giving you a strong and rust-resistant part that lasts. Thanks to precise CNC machining, the screw has a smooth surface and accurate threads, making adjustments easier and more reliable. It features a special O-ring that keeps the screw firmly in place, so you don’t have to worry about it loosening during rides. Plus, the anodized finish adds a tough protective layer, helping the screw resist wear and corrosion. Overall, this fuel screw offers you a stable and long-lasting way to fine-tune your carburetor for better performance.

What We Like
Durable aluminum build
Precision CNC machining
Anti-loosening O-ring
Anodized corrosion resistance
#TOP 7

Dorman 876-697 Hex Head Cap Screws 4 Pack

876-697
Silver
M12x1.25
Dorman 876-697 Hex Head Cap Screws 4 Pack Cover
Dorman 876-697 Cap Screw-Hex Head-Class 8.8- M12-1.25 x 120mm, 4 Pack

The Dorman Hex Head Cap Screws offer durable construction, made to meet precise thread standards so you can trust they fit perfectly in your projects. These screws are tested for corrosion resistance, which means they hold up well even in harsh conditions, saving you from frequent replacements. Their versatile design makes them suitable for various uses, whether you're working on automotive repairs or home improvements. Plus, you get the assurance of high-quality manufacturing supported by expert engineers, ensuring you receive a reliable product every time you use it.

What We Like
Durable materials
Corrosion resistance
Multipurpose use
Trusted quality control
#TOP 8

Moroso Fuel Bowl Screws

65414
Silver/Metallic
2.5 inches
Moroso Fuel Bowl Screws Cover
Moroso 65414 Fuel Bowl Screws (Set of 2)

The Moroso Fuel Bowl Screws are designed specifically for Holley 4150-4160 and 4500 model carburetors. With a convenient hex head design, these screws allow for easier removal of the fuel bowl compared to traditional screwdriver head screws. The package includes four screws, each measuring 2.5" in length. By using these screws, you can quickly and effortlessly remove the fuel bowl when necessary, saving you time and effort. Whether you're a professional mechanic or a DIY enthusiast, the Moroso Fuel Bowl Screws are a must-have accessory for your carburetor maintenance and repair needs.

What We Like
Compatible with Holley carburetors
Convenient hex head design
Includes four screws
#TOP 9

Tusk Idle Adjustment Screw for Yamaha and Kawasaki Bikes

TUSK
ADS-02-Black4d8d-5cb021
Black
Tusk Idle Adjustment Screw for Yamaha and Kawasaki Bikes Cover
Tusk Idle Adjustment Screw Black Compatible with Yamaha YZ250 1996-2025/Compatible with Kawasaki KX250 1988-2007/KX85 2001-2005

The Tusk Idle Screw is designed for Yamaha YZ250 models from 1996 to 2025 and Kawasaki KX250 (1988-2007) and KX85 (2001-2005). This carburetor self-tapping screw helps you fine-tune your bike’s idle speed, giving you better control over engine performance. Since it is a self-tapping screw, it easily fits into your carburetor without needing extra tools or modifications, saving you time and effort during installation. Keep in mind, this product is not CARB compliant, so it may not meet certain emissions standards. Overall, the Tusk Idle Screw offers a practical and straightforward way to adjust your bike’s idle for smoother rides.

What We Like
Wide model compatibility
Easy self-tapping installation
Improves idle control
Durable brand quality
#TOP 10

LATUMAN 26-7 Throttle Base Plate Screws for Holley Carburetors

26-7
Gold
LATUMAN 26-7 Throttle Base Plate Screws for Holley Carburetors Cover
(6 Pack) 26-7 Throttle Base Plate Screws 12-24 Threads x 13/16" Fits for Holley Carburetor

The LATUMAN Base Plate Screws are designed to securely attach the base plate to the main body of your carburetor, ensuring a stable fit. With 12-24 thread size and 13/16-inch length, these screws offer the right dimensions for most 2 and 4 barrel carburetors, giving you a reliable and precise connection. They are compatible with popular Holley carburetor series like 2300, 4150, and 4160, making them versatile for various setups. This means you can easily replace or upgrade your screws without worrying about fitment issues, providing convenience and peace of mind during installation or maintenance.

What We Like
Precise thread size and length
Secure base plate attachment
Compatible with multiple Holley series
Fits 2 and 4 barrel carburetors
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Do self-tapping screws hold well?

Yes, self-tapping screws hold well. They have a self-cutting feature that eliminates the need for pre-drilling and creates a precise and secure thread. This results in a stronger hold and less mess during installation.

2. Should I drill a pilot hole for self-tapping screws?

In softer materials like wood or plastic, a pilot hole is not always necessary as the self-tapping tip can create the required hole. However, for harder materials like metals or certain hard woods, a pilot hole must be drilled before tapping the thread.

3. What are the three types of self-tapping screws?

There are various types of self-tapping screws available, including countersunk, button-head, pan-head, and hex-head, among others. The choice of self-tapping screw type depends on the specific fastening task.

4. What is the disadvantage of self-tapping screws?

One disadvantage of self-tapping screws is that they can damage the material if not installed correctly. They also have a lower shear strength compared to wood screws, making them more prone to stripping in high holding power applications.

5. How much weight can self-tapping screw hold?

The weight-bearing capacity of a self-tapping screw varies depending on factors such as thread type, length, quality, insertion angle, and applied forces. Generally, self-tapping screws can sustain around 80 to 100 pounds of weight.

6. Is a drill better than an impact driver for self-tapping screws?

For self-tapping screws, it is recommended to use a variable speed screw gun instead of an impact driver. Self-tapping screws are installed into pre-punched or pre-drilled holes, and proper control of RPMs is critical for their installation.

7. What size of pilot hole should be used for a screw?

As a general rule, the pilot hole should have the same diameter as the neck of the screw. It is important not to drill the pilot hole too small, as a tighter space does not necessarily result in better holding power.

8. What could cause self-tapping screws to fail?

Self-tapping screws may fail if the material being tapped is too hard for the screw. Additionally, standard self-tapping screws are not suitable for forming threads in hardened steel or many stainless steels. Another potential cause of failure is using a hole that is too small for the screw.

Editor's Notes

During our carburetor self-tapping screw research, we found 24 carburetor self-tapping screw products and shortlisted 10 quality products. We collected and analyzed 3,473 customer reviews through our big data system to write the carburetor self-tapping screws list. We found that most customers choose carburetor self-tapping screws with an average price of $12.28.

The carburetor self-tapping screws are available for purchase. We have researched hundreds of brands and picked the top brands of carburetor self-tapping screws, including NEBOO, TONRYCUE, TUSK, OXCANO, NICECNC. The seller of top 1 product has received honest feedback from 79 consumers with an average rating of 4.7.

Written by
Robert Reyes Avatar

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.