McMaster-Carr logo
    Filter by
    System of Measurement
    Thread Size
    Industrial Info Compare
    Grease Fitting Style
    Thread Type
    Industrial Info Compare
    Pipe Size
    Industrial Info Compare
    Shank Type
    For Use With
    Check Valve Type
    Specifications Met
    Gender
    Head Diameter
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    21 Products

    Flush-Style Grease Fittings

    Image of Product. Front orientation. Grease Fittings. Flush-Style Grease Fittings, Male, Straight, Style C.
    Image of Product. Front orientation. Grease Fittings. Flush-Style Grease Fittings, Male, Straight, Style D.

    Male

    Straight

    Style C

    Male

    Straight

    Style D

    The nipple doesn't stick out, so these fittings fit in tight spaces and won't be damaged if something knocks into them. An integral check valve prevents grease from leaking when pressure causes backward flow. The valve stays closed when not in use to keep out dirt and other contaminants.
    Straight with Male Thread
    Image of Product. Front orientation. Grease Fittings. Flush-Style Grease Fittings, Male, Straight, Style C.
    Image of Product. Front orientation. Grease Fittings. Flush-Style Grease Fittings, Male, Straight, Style D.

    Style C

    Style D

    Style C—Install Style C with a hex wrench.
    Style D—Install Styles A, B, and D with a slotted screwdriver.
    Zinc-Plated Steel—Zinc-plated steel fittings have mild corrosion resistance.
    303 Stainless Steel—303 stainless steel fittings are more corrosion resistant than zinc-plated steel fittings and have good chemical resistance.
    Pkg.
    Style
    Material
    Overall
    Ht., mm
    Thread
    Lg., mm
    Shank Lg.,
    mm
    Slot Lg.,
    mm
    Hex Size,
    mm
    Max. Pressure,
    psi
    Check Valve
    Type
    Specs.
    Met
    Pkg.
    Qty.
    1-9
    10-Up
    1/8 BSPP Thread
    DZinc-Plated Steel1010109.7—1,450BallDIN 3405510595K32000000000000
     
    1/4 BSPP Thread
    DZinc-Plated Steel13111313.2—1,450BallDIN 3405110595K33000000000
     
    3/8 BSPP Thread
    CZinc-Plated Steel14.599—171,450BallDIN 3405310595K340000000000
     
    M5 × 0.8 mm Metric Thread
    CZinc-Plated Steel966—71,450BallDIN 3405510595K3500000000
     
    M6 × 0.75 mm Metric Thread
    CZinc-Plated Steel966—71,450BallDIN 3405510595K3600000000
     
    M6 × 1 mm Metric Thread
    CZinc-Plated Steel966—710,000BallDIN 340552421K3100000000
    C303 Stainless Steel966—71,450BallDIN 3405110595K3700000000
     
    M8 × 1 mm Metric Thread
    CZinc-Plated Steel9.56.56.5—910,000BallDIN 340552421K3200000000
    DZinc-Plated Steel1010108—1,450BallDIN 3405510595K380000000000
     
    M8 × 1.25 mm Metric Thread
    CZinc-Plated Steel9.56.56.5—91,450BallDIN 3405510595K3900000000
     
    M10 × 1 mm Metric Thread
    CZinc-Plated Steel9.56.56.5—1110,000BallDIN 340552421K3300000000
    DZinc-Plated Steel10101010—1,450BallDIN 3405510595K410000000000
     
    M10 × 1.5 mm Metric Thread
    CZinc-Plated Steel9.56.56.5—111,450BallDIN 3405510595K4200000000
     
    M12 × 1.5 mm Metric Thread
    CZinc-Plated Steel149.59.5—141,450BallDIN 3405510595K430000000000
     

    Self-Tapping Flush-Style Grease Fittings for Unthreaded Holes

    Image of Product. Front orientation. Grease Fittings. Self-Tapping Flush-Style Grease Fittings for Unthreaded Holes.
    Ensure a secure fit in unthreaded holes—these fittings cut threads as they’re installed. Use them in tight spaces where protruding fittings won't work. Install with a hex wrench. Fittings can be driven in, but then are not pressure rated. They’re zinc-plated steel for mild corrosion resistance. An integral check valve prevents grease from leaking when pressure causes backward flow. The valve stays closed when not in use to keep out dirt and other contaminants.
    Pkg.
    For Hole
    Dia., mm
    Material
    Overall
    Ht., mm
    Shank Lg.,
    mm
    Thread
    Lg., mm
    Hex Size,
    mm
    Max. Pressure,
    psi
    Check Valve
    Type
    Specs.
    Met
    Pkg.
    Qty.
    1-9
    10-Up
    Straight with Male Thread
     
    M6 × 1 mm Metric Thread
    5.6 to 5.7Zinc-Plated Steel8.55.55.5710,000BallDIN 340552421K37000000000000
     
    M8 × 1 mm Metric Thread
    7.6 to 7.7Zinc-Plated Steel8.55.55.5910,000BallDIN 340532421K3800000000
     
    M10 × 1 mm Metric Thread
    9.6 to 9.7Zinc-Plated Steel8.55.55.51110,000BallDIN 340512421K3900000000
     

    Flush-Style Grease Fittings for Unthreaded Holes

    Since they don’t protrude, these fittings avoid damage from impact and fit in tight spaces. Use a hammer and grease fitting installation tool (not included) to drive them into unthreaded holes. An integral check valve prevents grease from leaking when pressure causes backward flow. The valve stays closed when not in use to keep out dirt and other contaminants.
    Straight with Smooth Shank
    Image of Product. Front orientation. Grease Fittings. Flush-Style Grease Fittings for Unthreaded Holes, Straight with Smooth Shank.
    Zinc-Plated Steel—Zinc-plated steel fittings have mild corrosion resistance.
    303 Stainless Steel—303 stainless steel fittings are more corrosion resistant than zinc-plated steel fittings and have good chemical resistance.
    Pkg.
    Material
    Overall
    Ht., mm
    Shank Lg.,
    mm
    Head Dia.,
    mm
    Max. Pressure,
    psi
    Check Valve
    Type
    Specs.
    Met
    Pkg.
    Qty.
    1-9
    10-Up
     
    For 6 mm Diameter Holes
    Zinc-Plated Steel7.55.5810,000BallDIN 340552421K34000000000000
    303 Stainless Steel7.55.581,450BallDIN 340512421K410000000000
     
    For 8 mm Diameter Holes
    Zinc-Plated Steel9.56.51010,000BallDIN 340552421K350000000000
     
    For 10 mm Diameter Holes
    Zinc-Plated Steel9.56.51210,000BallDIN 340532421K3600000000
     
    back to top