Straight Compression Fittings

Straight Compression Fittings

Straight compression fittings for secure, high-pressure tube connections in lubrication systems.

These straight compression fittings are designed for connecting tubes in centralized lubrication systems with a reliable, leak-resistant seal. Featuring a 24° DIN cone design with a coupling nut and compression ring, they meet DIN 2353 and ISO 8434-1 standards. These fittings are commonly used with plastic and steel tubing for grease or oil-based systems and are easy to install without soldering.

Most models are rated for LL (100 bar), L (up to 250 bar), or S (up to 630 bar) pressure classifications depending on size.

Variations

• 4 mm Tube × M6x1 Male Thread · LL (104-001)
• 4 mm Tube × M8x1 Male Thread · LL (104-002)
• 4 mm Tube × R 1/8 BSPT Male Thread · LL (104-004)
• 6 mm Tube × M6x1 Male Thread · LL (106-001)
• 6 mm Tube × M8x1 Male Thread · LL (106-002)
• 6 mm Tube × M8x1.25 Male Thread · LL (106-002-8x1.25)
• 6 mm Tube × M10x1 Male Thread · LL (106-003)
• 6 mm Tube × R 1/8 BSPT Male Thread · LL (106-004)
• 6 mm Tube × R 1/4 BSPT Male Thread · LL (106-005)
• 6 mm Tube × R 1/4 BSPT Male Thread · L (106-005-L)
• 6 mm Tube × 1/4 NPT Male Thread · L (106-005-L-NPT)
• 6 mm Tube × 1/8 NPT Male Thread · LL (106-004-NPT)
• 6 mm Tube × 1/4-28 UNF Male Thread · LL (1012-005)
• 8 mm Tube × M10x1 Male Thread · LL (108-003)
• 8 mm Tube × R 1/8 BSPT Male Thread · LL (108-004)
• 8 mm Tube × R 1/4 BSPT Male Thread · L (108-005-L)

Material & Benefits: Steel Zinc-nickel (CrVIF)

Our steel fittings feature a Zinc-nickel (CrVIF) alloy coating, electroplated directly onto the surface for superior corrosion resistance and durability. This finish combines approximately 10–15% nickel with zinc to form a hard, smooth, and long-lasting protective layer—making it an ideal alternative to traditional zinc or cadmium coatings.

Benefits of Zinc-nickel Coating

• Provides up to 10x more corrosion resistance than standard zinc
• Offers improved wear resistance for moving parts
• Withstands thermal stress better than conventional finishes
• Commonly used in automotive and aerospace applications

Additional Information

For more information about compression fittings, or to determine if this product is right for your application, contact us online or at (413) 788-5823.