Bomar Hatches & Hatch Parts


Bomar Hatch Parts Commonly requested replacement parts for a variety of Bomar Hatches are listed below. For parts not listed please contact us with measurements and details.

Parts for Bomar Cast Hatches Commonly requested replacement parts for Bomar Cast Hatches are listed below. For parts not listed please contact us with measurements and details.
Female Knob for 5/16" Stud: Bom P100-08: Black plastic Dog Knob is threaded for standard 5/16" Dog stud. Used on a variety of Bomar Ports and Hatches, fluted Knob is 1 3/4" (45mm) OD x 1" high, threaded for a 5/16-18 stud.
Female Knob for 3/8" Stud: Bom P100-07: Black plastic Dog Knob is threaded for standard 3/8" Dog stud. Used on a variety of Bomar Ports and Hatches, fluted Knob is 1 3/4" (45mm) OD x 1" high, threaded for a 3/8-16 stud.
Male Knob w/ 5/16" Screw: Bom P100-06: Black plastic Knob has integral 5/16" SS threaded screw. Used on a variety of Bomar Hatches, fluted Knob is 1 3/4" (45mm) OD x 1" high, 5/16-18 screw is 1" long.
Knob Ass'y w/ Screw & Tie-down latch: Bom P100-09: Black plastic Knob Assembly includes special 3/8" screw stud with integral Tie-down latch. Used on a variety of Bomar C100 series Cast Hatches, assembly includes attachment Pin and Spring.

Stay Arm Ass'y - Socket style: Bom P100-00: Cast, Socket style Aluminum Stay Arm Assembly features a Hollow Tubular Socket and Cast Aluminum Stay Arm with a Locking knob. Unit attaches to Hatch with (2) 5/16" bolts (included). Socket is (maximum) 8 1/4" long. Used on a variety of Cast Bomar Hatches.
Stay Arm Ass'y - Right: Bom P100-20: Stay Arm Ass'y - Left: Bom P100-21: Stay Arm Assembly features a sliding Stainless Steel sliding Stay and a Cast Aluminum Arm with Locking knob. Unit attaches to Hatch with (2) 5/16" bolts (included). Cast Arm is (maximum) 7 3/8" long. Used on a variety of Cast Bomar Hatches, casting is marked R or L.
Dog Screw - 5/16": Bom P100-08S: Dog Screw has 5/16" thread with a 3/16" cross hole. Aluminum Dog Screw is (maximum) 2 1/8" (54mm) long. Used on a variety of Cast Bomar Ports and Hatches.
Dog Screw - 3/8": Bom P100-11: Dog Screw has 3/8" thread with (2) 3/16" cross holes, lower hole is for attachment of tie down latch. Aluminum Dog Screw is (maximum) 3" (76mm) long. Used in Tie-down latch Knob Assembly, Bom P100-09.

Handle Ass'y for Cast Hatches - Left: Bom P100-18L: Left side Black plastic Handle Assembly includes screw. Used on Bomar C100 series Cast Hatches.
Handle Ass'y for Cast Hatches - Right: Bom P100-19R: Right side Black plastic Handle Assembly includes screw. Used on Bomar C100 series Cast Hatches.

Gasket for Bomar C100 series Cast Hatches: Bom P100-52G:
Black rubber Gasket is used on all Bomar C100 series Cast Hatches. Round profile Gasket is 9/16" (14mm) OD, and incorporates a self-adhesive strip. Sold by the foot.

Parts for Bomar Extruded Hatches Commonly requested replacement parts for a variety of Bomar Extruded Hatches are listed below. For parts not listed please contact us with measurements and details.
Handle Ass'y for Extruded Hatches - Left: Bom P2000-52LA: Left side Handle Assembly with Slide-lock includes Top (mushroom) Cap, frame attachment bracket and screw. Used on Bomar Extruded Hatches.
Handle Ass'y for Extruded Hatches - Right: Bom P2000-53RA: Right side Handle Assembly with Slide-lock includes Top (mushroom) Cap, frame attachment bracket and screw. Used on Bomar Extruded Hatches.
	Top Cap for Hatch Handle: Bom P2000-27TC: Top Cap or Mushroom Cap for Slide-lock Hatch Handle fits on the outside of Hatch. Black plastic Top Cap has square stud that mates with Handle socket. Unit is 35mm (1 3/8") OD x 44mm (1 3/4" long) and includes O-ring. Used on Bomar Extruded Aluminum and molded Plastic Hatches.
	Opening Top Cap for Hatch Handle: Bom P2000-86TCO: Opening Top Cap for Slide-lock Hatch Handle fits on the outside of Hatch allowing operation of the Handle from the outside. Black plastic Opening Top Cap has square stud that mates with Handle socket. Unit is 37mm (1 7/16") OD x 42mm (1 5/8" long) and includes O-ring. Used on Bomar Extruded Aluminum Hatches.
	Locking Button for Slide-lock Hatch Handle: Bom P2000-12LB:
	Locking Slide Button fits in Slide-lock Hatch Handle. Grey plastic Locking Button is 2" (50mm) long x 5/8" (16mm) wide. Used on Bomar Extruded Aluminum Hatches.
Stay Arm Ass'y - Right: Bom P2000-75-__: Stay Arm Ass'y - Left: Bom P2000-76-__: Stay Arm Assembly for Extruded Hatches features a sliding Stainless Steel sliding Stay and a molded Arm with Twist-lock outer sleeve. Unit attaches to Hatch with screw and Pin (included). Length of SS Stay is different for every size Hatch, please specify Length.

Gasket for Bomar Low-profile Extruded Hatches, per ft.: Bom P2000-25G:
Low-profile Black rubber Gasket is used on all Bomar Low-profile Extruded Hatches. Low-profile Gasket is (maximum) 5/8" (16mm) high x 11/16" (17mm) wide. Gasket is sold by the foot.
Gasket for Bomar P2000 series Extruded Hatches, per ft.: Bom P2000-26G:
High-profile Black rubber Gasket is used on all Bomar High-profile Extruded Hatches. High-profile Gasket is (maximum) 7/8" (23mm) high x 13/16" (21mm) wide. Gasket is sold by the foot.
Gasket Glue for Bomar Hatches & Ports: Bom G-GGlue: Special Gasket Glue is used for Gasket attachment on all Extruded Bomar Hatches and Ports. Enough Glue is included for re-gasketing 2 mid-size Hatches or 4-5 Ports.

Fly (mosquito) Screens for Hatches Flyscreens or Mosquito Screens for most Bomar Hatches are available on special order. Please contact us with measurements and details.

Replacement Glass (Acrylic) for Hatches Replacement Glass (Acrylic) Lenses for most Bomar Hatches are available on special order. Please contact us with measurements and details.

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Spars, Rigging, and Hardware for Sailboats

Bomar Hatches and Hatch Parts Bomar Hatches and Ports are commonly found on a wide variety of US built yachts since 1971. While they now manufacture a much wider range of Hatches in a variety of materials, their original Cast Aluminum C100 series Hatches are still amongst the best and strongest available anywhere.


Bomar Hatches Bomar Hatches are available in the original Cast Aluminum C100 series, as well as a variety of other styles in a wide range of sizes. For replacement Hatches please contact us with Outside (maximum) Dimensions of the Deck Flange and details.