Best Spline Screwdriver Bits of 2025

Harry Stack Avatar
Harry Stack
Last Updated: Jan 9, 2025

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Spline screwdriver bits are a specialized type of screwdriver bit that are designed to fit into a unique type of screw head that features a series of ridges or splines. These bits are often used in automotive and machinery applications where a high level of torque is required to tighten or loosen screws. Spline screwdriver bits come in a variety of sizes and shapes, allowing them to be used with a wide range of different screws. They are made from high-quality materials like chrome vanadium steel or S2 steel, which provides excellent durability and resistance to wear and tear.

At a Glance: Our Top Picks

Trlr/Rv Dblsq Bit 1/4" Cover #TOP 1
Trlr/Rv Dblsq Bit 1/4"
ftb score rating icon 9.8
VEGA XZN Triple Square M8 Bits Cover #TOP 2
VEGA XZN Triple Square M8 Bits
ftb score rating icon 9.7
BGS 4763 10mm Bit Cover #TOP 3
BGS 4763 10mm Bit
ftb score rating icon 9.5

Top 10 Spline Screwdriver Bits

#TOP 1

Trlr/Rv Dblsq Bit 1/4"

86642
No Color
One Size
Trlr/Rv Dblsq Bit 1/4" Cover
Best Way Tools Spline 1/4 in. x 1 in. L Screwdriver Bit Carbon Steel 1 pc.

This Trlr/Rv Dblsq Bit 1/4" is a socket screwdriver bit that features an 8 spline, double square head type, 1/4" shank diameter, 1" bit length, and spline screwdriver bit type. It is useful for those who need a durable and reliable screwdriver bit to use for their socket screws.

What We Like
Durable and reliable
8 spline for secure grip
1" bit length for versatility
#TOP 2

VEGA XZN Triple Square M8 Bits

150XZN08-3
XZN M8
VEGA XZN Triple Square M8 Bits Cover
XZN Triple Square M8 Driver Bits. Vega Professional Grade 1/4" Hex Shank XZN Triple Square Spline M8 2 Inch Bits. 150XZN08-3

The VEGA M8 Driver Bits come in a convenient three-pack, designed specifically for precision and durability. Their CNC machined tips ensure a perfect fit in fasteners, making your automotive tasks easier and more efficient. Made from S2 modified shock-resistant steel, these bits are built to last, providing reliability for professional use. Additionally, the bits undergo precision heat treatment, enhancing their durability and protecting against wear, so you can tackle even the toughest jobs with confidence.

What We Like
Precision fit
Durable construction
Heat-treated for longevity
Ideal for European vehicles
#TOP 3

BGS 4763 10mm Bit

BGS
4763
One Size
BGS 4763 10mm Bit Cover
BGS 4763 | Bit | 10 mm (3/8") Drive | spline (for RIBE) M8

The BGS 4763 Bit is a high-quality socket screwdriver bit designed for professional use. With its original BGS quality, you can trust that it will deliver reliable performance. The excellent price-to-quality ratio means you get great value without compromising on durability. This bit is specifically designed for spline (RIBE) screws, making it a convenient tool for various applications. Its professional-grade quality ensures that it can withstand the demands of tough jobs, making it a must-have in your toolkit.

What We Like
Original BGS quality
Great value for money
Professional-grade durability
Designed for spline screws
#TOP 4

Vigor V2067 Spline Screwdriver Bit

Vigor
V2067
Vigor V2067 Spline Screwdriver Bit Cover
Vigor Spline Screwdriver Insert Bit, Spanner 8 mm, Overall length: 100 mm, 1/2-Inch, Set of 1, V2067

The Vigor Spline Screwdriver Bit is designed to tackle screws with internal serration, making it ideal for tight spaces and difficult work areas. With a square drive of 12.5 mm (1/2 inch) and an 8 mm spanner size, this tool provides versatility for various tasks. Its heat-treated construction balances strength and hardness, ensuring durability and reliability. You can trust this screwdriver bit to reach studs effectively, making your projects easier and more efficient.

What We Like
Versatile for tight spaces
Durable heat-treated construction
Effective for internal serration screws
Square drive for better grip
#TOP 5

SK Hand Tool 4042146356708 1/4" Bit Socket Spline (XZN) M7

4042146356708
Clear
one size
SK Hand Tool 4042146356708 1/4" Bit Socket Spline (XZN) M7 Cover
SK Hand Tool 4042146356708 1/4" Bit socket spline (XZN), M7, clear

This socket screwdriver bit features a spline (XZN) with an internal square drive to DIN 3120 / ISO 1174 with ball reception, making it easy to use manually. The press-fitted nickel-plated insert bit ensures durability and reliability.

What We Like
Durable press-fitted nickel-plated insert bit
Easy to use manually with internal square drive and ball reception
Spline (XZN) design provides a secure grip on bolts and screws
#TOP 6

BGS 4766 Bit

BGS
4766
BGS 4766 Bit Cover
BGS 4766 | Bit | Length 30 mm | 10 mm (3/8") Drive | Spline (for RIBE) M11

The BGS Bit 4766 is a 30 mm long drill bit made of durable chrome vanadium steel. It features a Spline profile designed for RIBE screws, specifically the M11 size. This design ensures a secure grip and precise torque when working with RIBE screws. The 10 mm (3/8") drive makes it compatible with a wide range of drills. The BGS Bit 4766 offers you reliability and efficiency in drilling tasks, allowing you to work with ease and accuracy.

What We Like
Durable Chrome Vanadium Steel
Precision with RIBE Screws
Compatible with 3/8" Drills
#TOP 7

SK Hand Tool 10 mm Bit Spline XZN, 30 mm

4042146056943
Clear
one size
SK Hand Tool 10 mm Bit Spline XZN, 30 mm Cover
SK Hand Tool 4042146056943 10 mm Bit Spline XZN, 30 mm, M12, Clear

SK Hand Tool 10 mm Bit Spline XZN is a high-quality screwdriver bit that is widely used by customers in over 135 countries. The product is designed to provide convenience to users with a package height of 5.12 inches, a package length of 13.78 inches, and a package width of 9.84 inches.

What We Like
High-quality product
Widely used by customers in over 135 countries
Comes with convenient dimensions
#TOP 8

CoCud M5 3/8" Impact Bit Socket

CoCud
cuf240719dd000290
CoCud M5 3/8" Impact Bit Socket Cover
CoCud M5 Spline Bit Socket 3/8" Impact Bit Socket S2 Steel CR-V Impact Bit Screwdriver Sockets with Hex Shank Adapter - (Applications: for Fastening Car Machinery Screws)

The CoCud M5 Impact Socket is designed for those who need a reliable tool for fastening and loosening screws and nuts. Its 3/8" drive size and 48mm length make it versatile for various applications, from automotive repairs to construction projects. The socket's head design enhances stability, ensuring a snug fit on fasteners, which helps you apply better rotational force. Made from durable S2 steel and CR-V materials, this socket can withstand high pressure and resist wear, providing longevity. The included hex shank adapter allows for easy connection to different tools, streamlining your workflow.

What We Like
Durable S2 steel construction
Versatile for multiple applications
Enhanced stability and fit
Quick tool conversion
#TOP 9

KS TOOLS 10mm Spline Bit

4042146056912
Clear
one size
KS TOOLS 10mm Spline Bit Cover
10mm Bit spline XZN,30mm,M6

The KS TOOLS Spline Bit is a reliable addition to your tool collection, designed for convenience and efficiency. With a worldwide presence in over 135 countries, this brand is recognized for quality. The package dimensions are practical, measuring 5.12 inches in height, 13.78 inches in length, and 9.84 inches in width, making it easy to store and transport. This screwdriver bit falls into the category of essential tools for various applications, ensuring you have the right equipment at hand when you need it most. Experience the benefits of owning a tool from a reputable manufacturer.

What We Like
Globally recognized brand
Convenient storage dimensions
Essential tool for various tasks
#TOP 10

Gedore INR 19 L 8-100 100mm Screwdriver Bit Socket 1/2"

INR 19 L 8-100
Gedore INR 19 L 8-100 100mm Screwdriver Bit Socket 1/2" Cover
Gedore INR 19 L 8-100 100mm Screwdriver Bit Socket 1/2" For Multi-Spline Screws RIBE M8

The Gedore INR 19 L 8-100 Screwdriver Bit Socket is a versatile tool designed for multi-spline screws RIBE M8. It features a square drive with ball retaining groove, hand-operated knurled grip, and pressed-in pin made of Gedore vanadium special steel with a gun-metal finish. This tool comes in the screwdrivers category.

What We Like
Versatile tool for multi-spline screws RIBE M8
Square drive with ball retaining groove for better grip
Knurled grip for comfortable hand operation
Buying Guide Image
Editor's Notes

During our spline screwdriver bit research, we found 24 spline screwdriver bit products and shortlisted 10 quality products. We collected and analyzed 4,781 customer reviews through our big data system to write the spline screwdriver bits list. We found that most customers choose spline screwdriver bits with an average price of $12.28.

The spline screwdriver bits are available for purchase. We have researched hundreds of brands and picked the top brands of spline screwdriver bits, including Best Way Tools, VEGA Industries, BGS, Vigor, KS TOOLS. The seller of top 1 product has received honest feedback from 2,179 consumers with an average rating of 4.8.

Written by
Harry Stack Avatar

Harry Stack owns a small hardware store, his career landed him a depth of knowledge in categories such as tools, equipment, machinery and hardware. In his spare time, he usually repairs furniture, safes and appliances, and he knows how to make simple repairs to plumbing or electrical fixtures. His hobbies also include woodworking and fishing.