Top 10 4mm Allen Socket 3/8 Drive – Socket Sets

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TEKTON 3/8 Inch Drive x 4 mm Hex Bit Socket | SHB13202

TEKTON #ad - Beveled inner rim of the socket opening helps guide it smoothly onto fasteners. 6-sided hexagonal tip is machined to precise tolerances for an exact fit with hex fasteners.

S2 steel bit is press-fit into the socket for a straight, permanent connection that can't loosen over time. Four detent grooves provide a secure connection with the drive tool and a drilled through-hole allows locking on with retaining pin. Overall length: 1. 9 inches, drive end diameter: 08 inch, shaft Diameter: 025 inch, exposed Bit Length: 08 inch. Large, clear die-stamped size marking is easy to read and can’t wear off. Polished, chrome-plated finish easily wipes clean and is highly resistant to corrosion.
BrandTEKTON #ad
ManufacturerTEKTON #ad
Height0.8 Inches
Length1.9 Inches
Weight0.08 Pounds
Width0.8 Inches
Part NumberSHB13202
WarrantyNo time limits, no receipts:



GEARWRENCH 3/8" Drive Hex Bit Impact Metric Socket 4mm, 84389

GEARWRENCH #ad - Meets or exceeds ASME specifications. Manganese phosphate finish to resist corrosion. High-visibility laser-etched markings provide quick size identification. Chrome molybdenum alloy steel CR-MO for exceptional strength and durability. Pin hole can be used with pin and o-ring for secure socket retention. Secondary hard stamped size markings.
ManufacturerApex Tool Group #ad
Height0.4 Inches
Length4.1 Inches
Weight0.12 Pounds
Width1.1 Inches
Part Number84389
WarrantyStandard Limited Lifetime



Precisely Machined Hex Bit Ends with 3/8-Inch Drive Heat Treated Chrome Vanadium Steel Sockets, 4mm Extra Long Hex Bit, S2 Bit Provides Greater Torque, ARES 70270

ARES #ad - If you have a pet, you realize they are more than a pet, they are part of the family. If you have any issues with your ares 4mm Extra Long Hex Bit, parts, simply contact customer service for troubleshooting help, replacement, or refund.

Design considerations: this socket features knurling for enhanced grip, and the chamfered extra long hex bit end ensures a smooth fit into fasteners, which protects both the bit and fasteners from damaged edges. Reliable | effective | efficient: users trust ares to be quality tools. With your support, we’re proud to help this great organization. Individual or set: our individual extra long hex bit sockets allow you to mix and match as you see fit.

Quality: this 3/8-inch drive socket is made with heat treated Chrome Vanadium steel, and the CNC machined extra long hex bit is constructed of high strength S2 steel to ensure accurate size and fit. You are backed by our Performance Assurance. Even if you don't need the full metric or SAE hex bit socket set, we've got you covered. Aspca business ambassador: we are proud to be part of the aspca business Ambassador Program.
BrandARES #ad
ManufacturerARES #ad
Part Number70270

4. Neiko


NEIKO 01130B 3/8" Drive Allen Bit Socket Set | 7 Piece | MM | 3" Length | Metric Hex Driver 4mm to 12mm | Cr-Mo Impact Grade

Neiko #ad - Pro quality: full set of three-inch long 3/8” Metric Allen hex drivers with one piece construction for loosening and tightening tough bolts and nuts. Impact grade: 3/8" drive sockets are impact ready and offer high strength and torque.

Durable: made of heavy duty black dropped-forged chrome molybdenum steel for maximum strength and durability. Visibility: laser etched markings engraved on each individual impact socket for easy identification and organization. Sizes: a full spectrum of hex driver sockets Metric sockets including 4, 6, 7, 8, 10, 5, 12 mm. Extra long: perfect for mechanics and electricians, the three-inch long length reaches places regular size impact sockets will not. Convenience: Heavy duty carrying/storage case included.
BrandNeiko #ad
ManufacturerRidgerock Tools Inc. #ad
Height1.8 Inches
Length10 Inches
Weight1.35 Pounds
Width5 Inches
Part Number01130B

5. vector tools


J&R Quality Tools 3/8-Inch Drive Cr-Mo Metric Allen Hex Driver Impact Socket Set, 4 mm, 12 mm | 7-Piece Set

vector tools #ad - Pro quality: full set of 2 1/2"-inch long 3/8” metric Allen hex drivers for loosening and tightening tough bolts and nuts. Impact ready: 3/8" drive sockets are impact ready and offer high strength and torque. Heavy duty construction: Made of dropped-forged chrome vanadium steel for maximum strength and durability. Wide range of sizes: a full spectrum of hex driver sockets metric sockets including 4, 10, 5, 6, 7, 8, 12 mm. Extra long: perfect for mechanics and electricians, three-inch long length reaches places regular size impact sockets won’t.
Brandvector tools #ad
ManufacturerJ&R Quality Tools #ad
Height4 Inches
Length8 Inches
Width4 Inches
Part Numbers34356

6. vector tools



vector tools #ad - Made of heavy duty black impact chrome molybdenum cr-mo steel constructioN. Designed for air tool use impact wrenches, ratchets…. Professional quality hex driver impact sockets. Sae sizes are: 3/16", 7/16”, 3/8”, 1/4", 5/16”, 7/32", & 1/2" lengtH- 2 1/2". Length- 2 1/2". Metric sizes are: 4mm, 10mm, 6mm, 7mm, 5mm, 8mm, & 12mm.
Brandvector tools #ad
ManufacturerJ&R Quality Tools #ad
Height4 Inches
Length10 Inches
Width4 Inches
Part Number95276D



HELAKLS 3/8 Inch Drive Hex Bits 4/5/6/7/8/10/12 MM Impact Allen Socket Set, 7 Piece Cr-Mo One-Piece Construction Metric Hex Driver Hand Tools for Repair

HELAKLS #ad - Wide range of sizes: a full spectrum of hex driver sockets metric sockets including 4, 5, 10, 8, 6, 7, 12 mm. Black phosphate coating protection: Each socket is coated with a black phosphate outer layer for extra protection against corrosion and rust so your tools stay in pristine condition.

3/8" drive sockets are impact ready and offer high strength and torque. They are storaged in a plastic case. Pro quality: full set of 6cm long 3/8 inch metric Allen hex drivers for loosening and tightening tough bolts and nuts. From our high-grade products to our focus on customer service. Lifetime warranty: why lots of people choose helakls. No matter what problems you have, just contact us and our professional after-sale team will get in touch with you and timely solve your problems. Heavy duty construction: made of dropped-forged Chrome Moly steel for maximum strength and durability.
BrandHELAKLS #ad
ManufacturerChangxu #ad
Height1.9 Inches
Length5.9 Inches
Width3.3 Inches

8. Hi-Spec


3/8” & 1/2" Drives. Complete in a Sturdy Tray Case, Tools Hi-Spec 32 Piece S2 Steel Hex Bit Socket Set. SAE & Metric Master Allen Bit Sockets of Hardened Steel with 1/4”

Hi-Spec #ad - Precision machining provides accurate sizing, with chamfered bit ends that insert smoothly into fasteners to prevent damaged edges and allowing a quick, frustration-free insertion thereby reducing overall project time. Socket end is given a mirror chrome finish that not only looks great but also serves to prevent corrosion of your tools – so you can use them for years to come! Machined to perfection: bit end is machined from premium s2 alloy steel, making it harder and more durable than other common steel materials – helping to reduce wear over time.

Fits 1/4, vehicle and engine DIY repair and maintenance. Torque strength: precision machined from high strength chrome vanadium steel, these bit sockets provide a great balance of toughness and durability so you can apply maximum torque from start to finish. Master of all: get turning now with hi-spec s2 steel hex bit socket set. 1/2, and 3/8” driver sizes cover sae 5/64-3/4” and metric 2-19mm for tasks including bicycle adjustments, 1/4, machine repairs, automotive maintenance and more – whether precision adjusting or looking for maximum torque this set is up to the task!.

A socket for every occasion: set includes a selection of most common sae and metric sizes of hex bit that will cover you in a wide range of tasks. Sizes are embossed on the case itself as well as engraved on our sockets so you can find the exact size you need without wasting valuable project time. The most-used sae and metric sizes of hex allen bit sockets, of S2 hardened steel, 3/8 and 1/2" drive wrench handles for automotive, set in a compact tray box. Safe & sound: bits come neatly organized in an industrial-strength storage case that keeps bits in their relevant slots while protecting them from knocks and drops.
BrandHi-Spec #ad
ManufacturerHi-Spec Products #ad
Height2.36 Inches
Length13.62 Inches
Weight2.35 Kilograms
Width7.95 Inches
Part NumberDT40318-AUK

9. Wolfride


Wolfride 5pcs ball end hex shank screwdriver bit set ball end drill bit magnetic with 1/4 Inch Hex Shank 100mm Length |2.5mm 3mm 4mm 5mm 6mm

Wolfride #ad - 100mm 1/4" hex shank ball end screwdriver bits, 5mm, 3mm, size: 2.5mm, 4mm, 6mm. If any problems, please feel free to contact us, we will reply to you within 24 hours. Ball end, for some limited place. Can be used for electric screwdriver, hand screwdriver, drill and other tools. Made of s2 high quality steel, with strong magnetic.
BrandWolfride #ad
ManufacturerWolfride #ad



345204, Genius Tools 3/8" Dr. 4mm Hex Impact Bit Socket, 52mmL CR-Mo

GENIUS TOOLS #ad - Durable materials - made from Chrome Moly Steel for high strength and durability while having anti-corrosive properties. Tool organization - Sizes are stamped for permanent and easy identification of size.

Specifications - 3/8 inch drive Size with an overall length of 52mm or 2. 05 inches. Professional grade - genius tools are designed and made for use by professional technicians and built to perform over a lifetime of heavy use. Peace of mind - purchase with confidence backed by the Genius Tools Limited Lifetime Warranty against manufacturer defects.

Reliable and effective - impact Bit Sockets heat treated for strength with black oxide coated to handle the rigorous needs of professional technicians. Ansi standards - meets or exceeds the standards established by the American National Standards Institute. Hex impact bit socket - 4mm Hex Bit Socket. Trust genius for a quality tool at a value cost to you.
ManufacturerGenius Tools #ad
Height0.75 Inches
Length2.05 Inches
Weight0.09 Pounds
Width0.75 Inches
Part Number345204
WarrantyLimited Lifetime Warranty from Manufacturer Defect