Wrenches

Image	Part Number	Description / PDF	Quantity	Rfq
	29 36X41 GEDORE Tools, Inc.	CONSTRUCTION RATCHET 36X41 MM	0
	1 B 28 GEDORE Tools, Inc.	COMBINATION SPANNER 28 MM	0
	9507D Xcelite	SET WR RAT COMB STBY SAE 7PC	0
	CCW11 Xcelite	7/8" COMBINATION WRENCH,SAE,FL P	0
	85951 Xcelite	WR RAT XL GEARBX DBL BX 11/32	0
	ACFR8VS Xcelite	WRENCH,8" ADJ FLEX-LOCK RATCHETI	0
	6-122 ISO GEDORE Tools, Inc.	DOUBLE OPEN ENDED SPANNER	0
	85915 Xcelite	WR RAT XL GEARBOX DBL BOX 15MM	0
	895 16X17 GEDORE Tools, Inc.	DOUBLE OPEN ENDED SPANNER	0
	TRS71640SS-EX Belden	TORQUE WRENCH EX SECURITY	0
	9843D Xcelite	WR RAT HLF MOON 5/8X11/16	0
	100 1.1/2 GEDORE Tools, Inc.	PIPE WRENCH ECK-SCHWEDE-SNAP 1.1	0
	25 V 8 GEDORE Tools, Inc.	SOCKET WRENCH 8 MM	0
	6-8 GEDORE Tools, Inc.	DOUBLE OPEN ENDED SPANNER	0
	6 7X9 GEDORE Tools, Inc.	DOUBLE OPEN ENDED SPANNER 7X9 MM	0
	9574 Xcelite	WR RAT COMB STBY FLEX 9/16	0
	AT24VS Xcelite	ADJ WRENCH,4",BLACK PHOSPHATE,CA	0
	7 6 GEDORE Tools, Inc.	COMBINATION SPANNER 6 MM	0
	2 34X36 GEDORE Tools, Inc.	DBL ENDED RING SPANNER OFFSET	0
	AC215VS Xcelite	ADJUSTABLE WRENCH,15",CHROME,CAR	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)