Bulkheads & Couplers

Use for multi-staging and joining BT50 body tubes. Great for scratchbuilding and repairs. Estes quality part - cheaper price! Direct replacement for Custom, Estes, FlisKits and other similarly sized model rockets.

This BT55TC x .125 Lite Ply Bulkhead Assembly is used for adding a payload section to a model rocket. The bulkhead is sized to fit inside Sunward BT55 tube couplers. Comes with a bulkhead plate, threaded screw eye bolt, nut and two washers. Coupler ...

This BT56 x 2 Tube Coupler is used for multi-staging and joining BT56 (1.346 diameter) body tubes. Direct replacement part for Estes, Sunward and other similarly sized model rockets. Grid spacing in photo is 1/2.

This BT70 x 3 Tube Coupler is used for multi-staging and joining BT70 (2.217 diameter) body tubes. Direct replacement part for Estes, Sunward and other similarly sized model rockets.

This BT80TC x .125 Lite Ply Bulkhead Assembly is used for adding a payload section to a model rocket. The bulkhead is sized to fit inside Sunward BT80 tube couplers. Comes with a bulkhead plate, threaded screw eye bolt, nut and two washers. Coupler ...

Includes an assortment of six Estes tube couplers to fit BT5, BT20 and BT50 body tubes. Perfect for connecting 2 body tubes of the same size together!Retail Price: $ 4.00

The Qualman Rocketry BT55C x .125 Lite Ply Bulkhead is used for adding a payload section to a model rocket. The bulkhead is sized to fit inside Sunward BT55 tube couplers. Comes with four bulkhead plates and four smaller backer plates. Coupler sold ...

The Qualman Rocketry BT60C x .125 Lite Ply Bulkhead is used for adding a payload section to a model rocket. The bulkhead is sized to fit inside Sunward BT60 tube couplers. Comes with four bulkhead plates and four smaller backer plates. Coupler sold ...

The Qualman Rocketry BT70C x .125 Lite Ply Bulkhead is used for adding a payload section to a model rocket. The bulkhead is sized to fit inside Sunward BT70 tube couplers. Comes with two bulkhead plates and two smaller backer plates. Coupler sold...

The Qualman Rocketry BT80C x .125 Lite Ply Bulkhead is used for adding a payload section to a model rocket. The bulkhead is sized to fit inside Sunward BT80 tube couplers. Comes with two bulkhead plates and two smaller backer plates. Coupler sold...

Includes an assortment of fifteen Sunward tube couplers to fit BT20, BT50, B55, BT56 and BT60 body tubes. Perfect for connecting 2 body tubes of the same size together! Estes quality parts - cheaper price! Direct replacement parts for Custom, Estes, ...

Includes an assortment of nineteen Sunward tube couplers to fit BT20, BT50, B55, BT56, BT60, BT70 and BT80 body tubes. Perfect for connecting 2 body tubes of the same size together! Estes quality parts - cheaper price! Direct replacement parts for...