Hex, Torx Keys

Part Number	Description / PDF	Quantity
LL2 Klein Tools	HEX KEY L-SHAPE 0.05" 2.88"	31
54002 Wiha	HEX KEY T-HANDLE 3/16" 5.91"	18
33409 Wiha	HEX KEY T-HANDLE 5MM 5.2"	277
36440 Wiha	TORX KEY T-HANDLE T40 3.94"	0
JTH4E12 Klein Tools	HEX KEY T-HANDLE 7/32" 4.00"	13
BLM8 Klein Tools	HEX KEY L-SHAPE 8MM 5.31"	9
54003 Wiha	HEX KEY T-HANDLE 7/32" 5.91"	0
35405 Wiha	4MM HEX KEY NICKEL LONG 10PK	6
42 7/32AF (5,5MM) GEDORE Tools, Inc.	HEXAGON ALLEN KEY 7/32" (5.5 MM)	10
JTH9M3 Klein Tools	HEX KEY T-HANDLE 3MM 9.00"	76
36962 Wiha	HEX KEY L SHAPE 7/32" 6.7"	0
36636 Wiha	TORX KEY L SHAPE T27 6.93"	0
36323 Wiha	TORX TR KEY L SHAPE T8S 1.77"	54
JTH6T20 Klein Tools	TORX KEY T-HANDLE T20 6.00"	0
33419 Wiha	HEX KEY T-HANDLE 7MM 9.13"	0
36908 Wiha	HEX KEY L SHAPE 2MM 3.9"	32
36951 Wiha	HEX KEY L SHAPE 9/64" 5.2"	0
36558 Wiha	TORX KEY FLAG HANDLE T8 3"	0
42 0,9 GEDORE Tools, Inc.	HEXAGON ALLEN KEY 0.9 MM	71
33429 Wiha	HEX KEY T-HANDLE 12MM 9.37"	0

Hex, Torx Keys

1. Overview

Hex (hexagonal) and Torx (star-shaped) keys are precision hand tools designed to drive bolts and screws with hexagonal or six-lobed (Torx) socket heads. These tools are critical in modern mechanical assembly, repair, and maintenance due to their high torque transmission efficiency and reduced risk of cam-out compared to traditional slotted or Phillips drives.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Standard Hex Keys	Simple L-shaped design with hexagonal cross-section	General machinery assembly, furniture installation
Ball-End Hex Keys	One end with 7 angled ball tip for angled insertion	Automotive engine compartments, tight spaces
Insulated Torx Keys	500V insulation rating with ergonomic handles	Electrical equipment maintenance, HVAC systems
Multi-Bit Torx Sets	Interchangeable bits with magnetic retention	Industrial machinery, aerospace components

3. Structure and Composition

Typical construction features:

High-grade alloy steel (e.g., Chrome Vanadium, S2 Steel) with heat treatment (HRC 45-60)
Surface treatments: Black oxide, nickel plating, or powder coating for corrosion resistance
Ergonomic TPR/PVC handles with anti-slip texture
Precision-machined driving ends with 0.0005" dimensional tolerance

4. Key Technical Specifications

Parameter	Importance
Dimensional Accuracy ( 0.001")	Ensures proper fit to prevent fastener damage
Hardness (HRC 50-60)	Directly affects torque capacity and wear resistance
Surface Roughness (Ra 0.8 m)	Reduces friction and prevents rust formation
Breakaway Torque Rating	Specifies maximum torque before tool failure

5. Application Fields

Major industries include:

Automotive: Wheel alignment systems, transmission assemblies
Electronics: Server rack mounting, circuit board fasteners
Aerospace: Aircraft panel fasteners (Torx Plus for tamper resistance)
Medical Equipment: MRI machine maintenance (non-magnetic variants)

6. Leading Manufacturers and Products

Manufacturer	Key Products
Wiha Tools	Series 1091 ISO 8976 precision hex keys
Snap-on Industrial	Torx T-handle sets with color-coded sizing
Bosch Rexroth	Hydraulic system maintenance Torx wrenches
Yamawaken	Anti-static hex keys for semiconductor manufacturing

7. Selection Recommendations

Key considerations:

Match fastener size (metric vs. imperial) and drive type
Choose appropriate handle type: T-handle for torque, L-shape for space constraints
Material selection based on environment (e.g., stainless steel for marine applications)
Consider torque-limiting models for precision applications

8. Industry Trends

Emerging developments include:

Nano-coating technologies for self-lubricating surfaces
Integration with IoT-enabled torque sensors
Bi-material handles with vibration-damping properties
Increased adoption of security Torx (pin-driven variants) in public infrastructure