Milton S‑643 female hex coupling – 1/4″

Description

The Milton S‑643 female hex coupling is a precision-manufactured brass hose fitting featuring dual 1/4″ female NPT threaded ends. Designed for assembling new air hoses or servicing existing ones, the milton s-643 female hex coupling ensures leak-free connections and is widely trusted in automotive, industrial, and fleet maintenance environments.

Constructed from solid brass and machined with hexagonal flats for easy wrench installation, this coupling is rated for standard pneumatic pressures (typically up to 300 PSI). Its compact design and accurate threading make it ideal for quick repairs and reliable hose fabrication.

The milton s-643 female hex coupling is sold in retail packaging, including single units or box of 10 packs, offering flexibility for both individual and bulk use scenarios. Its “Made in USA” status reflects Milton’s long-standing reputation for quality in pneumatic accessories.

H2 Features

• Dual 1/4″ female NPT ends for flexible hose assembly

• Brass construction resists corrosion and maintains strength

• Hex coupling body allows easy tightening with standard wrenches

• Compact 1/4″ size ideal for light-duty pneumatic hoses

• Made in USA by Milton Industries for professional reliability

H2 Technical Specifications

H2 Applications

• Building or repairing pneumatic air hoses

• Replacing damaged fittings on existing hoses

• Automotive workshops, compressor kits, or equipment hook-ups

• Industrial plants needing reliable brass fittings

H2 Installation Tips

1. Wrap male NPT threads with Teflon tape or apply suitable thread sealant.

2. Tighten using a wrench on the hex flats—avoid overtightening.

3. Inspect for leaks under pressure before full operation.

4. Store in a dry environment to maintain finish and prevent oxidation.

H2 Reasons to Buy

• Reliable Milton brand quality, crafted in the USA

• Versatile brass construction suitable for standard pneumatic uses

• Hex coupling shape simplifies installation or replacement

• Compact and effective, ideal for 1/4″ hose systems

• Available in singles or bulk packaging, adaptable to various needs

Additional information