BOMwiki the bill-of-materials encyclopedia
30,454,201 parts mapped · 193,225 items
Discussion History

Coupling and Hitch

Assembly

Ball or pintle hitch coupling the trailer to the tow vehicle, with safety chains. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Coupling and Hitch parts and their functions

7 top-level parts · 9 parts in total · full bill of materials below
Coupling and Hitch parts diagram: 1 ball hitch, 2 hitch mount plate, 3 breakaway cable, 4 safety chain, 5 chain shackle, 6 jack leg, 7 surge brake actuator. 9 parts in 7 top-level items.
Coupling and Hitch parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Ball Hitch 1× or pintle hook
2 Hitch Mount Plate 1× Steel plate welded to the tongue, bolting the ball stud.
3 Breakaway Cable 1× Mechanical cable triggering brakes if the trailer detaches.
4 Safety Chain 2× Grade-70 chain crossing under the tongue, preventing drop if hitch fails.
5 Chain Shackle 2× Pin shackle connecting chain to vehicle frame.
6 Jack Leg 1× manual or electric tongue jack
7 Surge Brake Actuator 1× Hydraulic piston compressing against the frame to activate trailer brakes as tow vehicle decelerates.

3D model

No 3D model yet. Have a CAD file of this? Add a 3D model. STL renders right on this page; STEP, FreeCAD, and OpenSCAD sources are welcome too (openly licensed, like all 3D models on BOMwiki).

Build & assembly graph

expand / collapse · shared sub-assemblies converge · links to related products · est. labour
product / assembly shared across products atomic part related product

Tap an assembly to expand/collapse · tap a part to open it · use “Open page” for any node · drag to pan, scroll to zoom.

Bill of materials for Coupling and Hitch

7 top-level lines · 7 rows shown · 9 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Ball Hitch boat-trailer-ball-hitch 1× 1 · part
2 Hitch Mount Plate boat-trailer-hitch-mount-plate 1× 1 · part
3 Breakaway Cable boat-trailer-breakaway-cable 1× 1 · part
4 Safety Chain boat-trailer-safety-chain 2× 2 · part
5 Chain Shackle boat-trailer-chain-shackle 2× 2 · part
6 Jack Leg boat-trailer-jack-leg 1× 1 · part
7 Surge Brake Actuator boat-trailer-surge-brake-actuator 1× 1 · part

Something wrong in this list? Report a problem with this BOM.

Where the coupling and hitch is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Used in 1 assembly

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work
VendorHQSpecialtyMOQLead time
🇨🇳Foxconn
foxconn.com ↗
Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
flex.com ↗ Singapore Electronics contract mfg 1,000 pcs 6–10 wks
dixoninfo.com ↗ Noida, IN Electronics contract mfg 1,000 pcs 6–10 wks
bydelectronic.com ↗ Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
🇸🇬Venture Corp
venture.com.sg ↗
Singapore Electronics contract mfg 1,000 pcs 6–10 wks