Wrenches

Image	Part Number	Description / PDF	Quantity	Rfq
	895 10X11 GEDORE Tools, Inc.	DOUBLE OPEN ENDED SPANNER	0
	1 B-08 GEDORE Tools, Inc.	COMBINATION SPANNER SET 8 PCS	0
	1 B-0115 GEDORE Tools, Inc.	COMBINATION SPANNER SET 15 PCS	0
	4 36X41 GEDORE Tools, Inc.	FLAT RING SPANNER 36X41 MM	0
	1 B 7/16W GEDORE Tools, Inc.	COMBINATION SPANNER 7/16 W	0
	6 9/16X5/8AF GEDORE Tools, Inc.	DOUBLE OPEN ENDED SPANNER	0
	6 36X41 GEDORE Tools, Inc.	DOUBLE OPEN ENDED SPANNER	0
	137 7-15 GEDORE Tools, Inc.	GRIP WRENCH 15 MM	0
	1 B-020 GEDORE Tools, Inc.	COMBINATION SPANNER SET 20 PCS	0
	DMSE 200 GEDORE Tools, Inc.	TORQUE WRENCH DREMASTER SE 14X18	0
	1 B 2.7/16AF GEDORE Tools, Inc.	COMBINATION SPANNER 2.7/16"	0
	225 36 GEDORE Tools, Inc.	PIPE WRENCH 36"	0
	6 5/16X3/8AF GEDORE Tools, Inc.	DOUBLE OPEN ENDED SPANNER	0
	7-0112 GEDORE Tools, Inc.	COMBINATION SPANNER SET	0
	VDE 2 E 10 GEDORE Tools, Inc.	VDE SINGLE ENDED RING SPANNER	0
	136 K-105 GEDORE Tools, Inc.	CHAIN GRIP WRENCH	0
	7 12 GEDORE Tools, Inc.	COMBINATION SPANNER 12 MM	0
	7 XL 34 GEDORE Tools, Inc.	COMBINATION SPANNER34 MM	0
	DMK 300 GEDORE Tools, Inc.	TORQUE WRENCH DREMASTER K 1/2" 6	0
	894 5/16AF GEDORE Tools, Inc.	SINGLE OPEN ENDED SPANNER 5/16"	0

Wrenches

1. Overview

Wrenches are hand tools designed to provide grip and torque for tightening or loosening nuts, bolts, and other fasteners. As fundamental components in mechanical engineering, they enable precise control of clamping forces in assembly, maintenance, and repair operations. Their importance spans across industries requiring reliable joint integrity, from automotive manufacturing to pipeline maintenance.

2. Major Types and Functional Classification

Type	Functional Characteristics	Application Examples
Open-End Wrench	Fixed jaw size with angled for quick engagement	Automotive engine assembly
Combination Wrench	Dual-ended (open+ring) with same size specifications	General mechanical repairs
Adjustable Wrench	Variable jaw width via threaded mechanism	Plumbing pipe fittings
Torque Wrench	Precise torque measurement with audible/visual feedback	Aerospace component installation
Socket Wrench	Interchangeable socket heads with ratchet mechanism	Industrial machinery maintenance
Allen Key	Hexagonal cross-section for socket head screws	Furniture assembly
Pipe Wrench	Self-tightening jaws with serrated teeth	Steel pipe installation

3. Structure and Components

Typical wrench construction includes: - Handle with ergonomic knurling/textured grip - Fixed/adjustable jaw assembly with hardened alloy steel - Ratchet mechanism (for socket wrenches) with pawl-and-roller system - Vernier scale (adjustable types) or torque scale (torque wrenches) - Surface treatment: Chrome vanadium finish or black oxide coating - Overload protection clutch (advanced torque models)

4. Key Technical Specifications

Parameter	Description	Importance
Material Hardness	50-60 HRC (Rockwell C scale)	Determines wear resistance and torque capacity
Torque Range	0-1500 N m (manual) / 0-5000 N m (hydraulic)	Defines application suitability
Size Range	4-60mm (metric) / 1/8"-2" (imperial)	Compatibility with fastener dimensions
Accuracy Class	4% (industrial) / 1% (precision)	Measurement reliability in critical applications
Surface Protection	Salt spray resistance >500h	Corrosion resistance in harsh environments

5. Application Fields

Key industries include: - Automotive manufacturing (engine assembly lines) - Aerospace maintenance (torque-critical fastening) - Construction (structural steel connections) - Pipeline systems (pressure-rated joint assembly) - Electronics (precision screw driving)
Case Study: Automotive Wheel Installation - Dual-direction torque wrenches ensure 120N m 5% clamping force consistency

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Innovation
Snap-on	Pro Torque Click Wrench	Micrometer adjustment with 1N m increments
Craftsman	VDE Insulated Wrench Set	1000V protection for electrical work
Bosch	ECOtorque Adjustable Wrench	Ergonomic 3D grip design
Stahlwille	No.7602 Combination Wrench	Double-layer chrome plating

7. Selection Recommendations

Consider: 1. Matching size range to fastener specifications 2. Required torque accuracy class 3. Material compatibility (e.g. non-sparking alloys for explosive environments) 4. Ergonomic factors (weight <1.5kg for prolonged use) 5. Calibration certification requirements (ISO 6789 compliance) 6. Special features (digital readout, Bluetooth connectivity)

Industry Development Trends

Emerging patterns include: - Integration of IoT-enabled torque sensors - Adoption of carbon fiber-reinforced polymer handles - Development of multi-axis smart wrenches - Standardization of 1/2" drive systems for heavy-duty applications - Growth in cordless electric wrench market (CAGR 7.2% 2023-2028)