Milton 733BK 3/8″ Male M‑Style Plug

Milton 733BK 3/8″ Male M‑Style Plug is an industrial-grade pneumatic fitting engineered for high-demand compressed air applications. As a premium case-hardened steel component, the Milton 733BK 3/8″ Male M‑Style Plug delivers exceptional durability and secure connections, with a maximum inlet pressure of 300 psi and airflow capacity of 40 SCFM—ideal for powering heavy-duty air tools, shop equipment, and compressor lines.

Built to MIL-C-4109 and ISO‑6150B specifications, the Milton 733BK 3/8″ Male M‑Style Plug is fully compatible with M-style couplers across brands, ensuring seamless interchangeability in mixed pneumatic assemblies. The 3/8″ MNPT thread allows robust installation into industrial air manifolds, while the M-style plug interface enables fast, snap-in tool connections with audible click feedback.

Using high-quality Buna-N seals, the Milton 733BK 3/8″ Male M‑Style Plug maintains leak-free operation even under frequent engagement cycles. Case-hardening extends service life by resisting abrasion and wear, making it a reliable choice for workshops, garages, and field service environments.

H2 Key Features

• 3/8″ MNPT male thread for secure piping installation

• M-style plug interface meets MIL-C-4109/ISO-6150B

• Rated for 300 psi inlet pressure

• Delivers 40 SCFM airflow at full pressure

• Case-hardened steel body resists corrosion and wear

• Buna-N seals provide consistent, leak-free performance

• Made in USA by Milton Industries
  

H2 Technical Specifications

H2 Applications

The Milton 733BK 3/8″ Male M‑Style Plug is ideal for:

• Industrial air tool hookups (impact wrenches, grinders)

• Compressor-to-line quick-change assemblies

• Pneumatic repair kits and manifolds

• Workshops, manufacturing, and on-site service environments

H2 Installation & Maintenance

1. Apply PTFE tape to the 3/8″ MNPT threads.

2. Tighten into a compatible female port—avoid overtightening.

3. Snap into an M-style coupler until securely engaged.

4. Inspect seals frequently; replace when worn.

5. Clean with dry cloth; avoid aggressive solvents.

6. Lubricate occasionally to maintain smooth engagement.

H2 Benefits

• Heavy-duty durability from case-hardened steel

• High airflow and pressure rating supports powerful tools

• Standard M-style compatibility across brands

• Long-lasting seals for leak-free use

• Backed by Milton Industries manufacturing standards

H2 Why Choose Milton

Milton has led pneumatic component innovation since 1943. The Milton 733BK 3/8″ Male M‑Style Plug exemplifies their enduring quality—engineered for heavy use, interchangeability, and industrial performance.