Martin 4140 Fractional SAE Flare Nut Wrench, 1-1/4 inch Opening, 12-Point Open-Box Design

Martin 4140 Fractional SAE Flare Nut Wrench, 1-1/4 inch Opening, 12-Point Open-Box Design

• Martin 4140 fractional SAE flare nut wrench features a 1-1/4 inch 12-point open-box design, providing secure fastener engagement and improved accessibility for hydraulic, brake, and fuel line fittings.
• Features:
  • Drop-forged alloy steel construction offers strength and durability for heavy-duty service
  • 1-1/4 inch 12-point open-box design improves contact with fasteners and reduces rounding
  • Flare nut configuration allows use on tubing and fittings where standard box wrenches cannot fit
  • Corrosion-resistant finish helps extend service life in harsh work environments
  • Designed for fractional SAE applications including hydraulic and automotive maintenance
• Specifications:
  • Manufacturer: Martin Sprocket & Gear (Martin Tool & Forge)
  • Part Number: 4140
  • Opening Size: 1-1/4 inch
  • Design: 12-point open-box flare nut
  • Material: Drop-forged alloy steel
  • Finish: Corrosion-resistant industrial finish
  • Application: Fractional SAE hydraulic, brake, and fuel line service
• The Martin 4140 fractional SAE flare nut wrench can also be referred to as Martin 12-point flare nut wrench 4140, Martin open-box SAE flare nut wrench, Martin 1-1/4 inch fractional flare wrench, and Martin hydraulic flare nut service wrench.

Martin Sprocket & Gear manufactures the 4140 fractional SAE flare nut wrench from drop-forged alloy steel with a 12-point open-box design, delivering reliable performance and accessibility for hydraulic and automotive line fittings.

Q: What is the opening size of the Martin 4140 wrench?
A: The wrench features a 1-1/4 inch 12-point open-box opening designed for fractional SAE fittings.

Q: Where is a flare nut wrench typically used?
A: It is commonly used on hydraulic, brake, and fuel line fittings where a standard box wrench cannot access.

Q: What material and finish are used?
A: It is made from drop-forged alloy steel with a corrosion-resistant industrial finish for durability.