Product Summary

Longze L-Shape Hexagon Keys are professional-grade hand tools manufactured according to DIN 911 and ISO 2936 standards, widely used in automotive repair, furniture assembly, machinery maintenance, and

electronics. Featuring a precision-cut profile, these Longze L-Shape Hexagon Keys provide maximum contact with the internal walls of socket screws, reducing the risk of stripping or rounding out high-tensile fasteners.

• ✔ Dual-End Functionality: Available in standard Flat End for high-torque applications and Ball End for accessing fasteners at angles up to 25°.

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• ✔ Industrial Grade Materials: Longze utilizes premium S2 Alloy Steel or Chrome Vanadium (Cr-V) to ensure superior hardness, torque strength, and long-term durability.

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• ✔ Precision Chamfered Ends: Each L-Shape Hexagon Key features burr-free chamfered tips that slide easily into the screw head for a perfect fit every time.

Key Features of L-Shape Hexagon Keys

• High Torque Performance – Heat-treated steel construction allows for maximum leverage without bending or snapping.

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• Corrosion Resistance – Offered in various professional finishes including Satin Chrome, Black Oxide, and Color-Coded coatings for easy size identification.

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• Access in Tight Spaces – The L-shape design provides a short arm for high-torque tightening and a long arm for deep-reach access.

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• Standardized Sizing – Available in complete Metric (mm) and Imperial (Inch) sets to cover all global fastener standards.

Technical Specifications

• Standards: DIN 911 / ISO 2936 / ANSI B18.3

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• Size Range: M0.7mm to M36mm | 0.028" to 1" Inch sizes

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• Material: S2 Steel (Extra Hard), Chrome Vanadium (Cr-V), Stainless Steel

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• Hardness: 58 to 62 HRC (S2 Steel) / 50 to 54 HRC (Cr-V)

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• Finish: Satin Chrome / Black Oxide / Mirror Polished / Color Coated

• Material & Mechanical Properties

• Material	Hardness (HRC)	Torque Strength	Feature	Application
  S2 Alloy Steel	58–62 HRC	Ultra-High	Impact Resistant	Heavy Industrial / Professional
  Chrome Vanadium	50–54 HRC	High	Excellent Toughness	General Maintenance / DIY
  Stainless Steel	45–50 HRC	Medium	Anti-Rust	Food / Marine / Medical

• Dimensions & Global Size Conversion
• Technical Standard: Longze manufactures professional-grade L-keys (Allen Wrenches) according to DIN 911 and ISO 2936 standards. Our range supports both Metric and Imperial specifications with high-torque S2 Alloy Steel for industrial use and Chrome Vanadium (Cr-V) for standard mechanical maintenance.

• American Size (Inch)	Nearest Metric Size (mm)	Decimal Equiv. (mm/inch)	Long Arm Length (mm/inch)	Short Arm Length (mm/inch)
  1/16"	1.5 mm	1.58 mm / 0.062"	45.0 mm / 1.77"	14.0 mm / 0.55"
  5/64"	2.0 mm	1.98 mm / 0.078"	48.0 mm / 1.89"	16.0 mm / 0.63"
  3/32"	2.5 mm	2.38 mm / 0.093"	54.0 mm / 2.12"	18.0 mm / 0.71"
  1/8"	3.0 mm	3.18 mm / 0.125"	61.0 mm / 2.40"	20.0 mm / 0.79"
  5/32"	4.0 mm	3.96 mm / 0.156"	68.0 mm / 2.68"	25.0 mm / 0.98"
  3/16"	5.0 mm	4.76 mm / 0.187"	76.0 mm / 3.00"	28.0 mm / 1.10"
  1/4"	6.0 mm	6.35 mm / 0.250"	88.0 mm / 3.46"	32.0 mm / 1.26"
  5/16"	8.0 mm	7.94 mm / 0.312"	102.0 mm / 4.02"	36.0 mm / 1.42"
  3/8"	10.0 mm	9.53 mm / 0.375"	115.0 mm / 4.53"	40.0 mm / 1.57"

• Surface Treatment

• Coating	Appearance	Corrosion Resistance	Application
  Black Oxide	Matte Black	24–48h	Precision Electronics
  Satin Chrome	Matte Silver	144h+	Professional Toolkits
  Color Coated	Multi-Color	100h+	Fast Size Identification
  Mirror Polished	Bright Silver	72h+	General Hardware3