SSC BB-5 Outside Hookup Garage Door Bottom Brackets – 2" Track, 11 Gauge – Pair

The SSC BB-5 is a heavy-duty outside-hookup bottom bracket set designed for sectional garage doors using compatible 2-inch track systems.

Mounted at the lower left and right corners of the garage door, the BB-5 provides the attachment point for the lift cables while also supporting the bottom roller position.

The outside-hookup configuration positions the cable attachment on the outside of the bracket assembly, making it suitable for garage door systems specifically designed around this style of bottom fixture.

This listing includes ONE MATCHED PAIR.

### Product Features

- Genuine SSC / Service Spring bottom bracket
- Model BB-5
- SSC Part Number 258
- Designed for 2" garage door track
- Outside-hookup cable configuration
- Heavy-duty 11-gauge steel construction
- Drilled-pin cable attachment
- Approximately 6-1/2" high
- Approximately 3-3/4" wide
- Sold as a matched left/right pair
- Designed for sectional overhead garage doors
- Replacement for bent, damaged, corroded, or worn bottom fixtures

### Specifications

- Manufacturer: Service Spring Corp / SSC
- Model: BB-5
- Part Number: 258
- Product Type: Garage Door Bottom Bracket Set
- Track Size: 2"
- Hookup Style: Outside Hookup
- Material: Steel
- Gauge: 11 Gauge
- Cable Attachment: Drilled Pin
- Height: Approximately 6-1/2"
- Width: Approximately 3-3/4"
- Quantity: 2 Brackets / 1 Pair
- Application: Sectional Garage Doors

### What Is a Bottom Bracket Used For?

The bottom bracket mounts to the lowest section of the garage door and forms a critical connection between the door and the counterbalance system.

The basic load path is:

Torsion Spring → Cable Drum → Lift Cable → Bottom Bracket → Garage Door

As the cable drum rotates and winds the lift cable, the lifting force is transferred through the bottom bracket into the garage door.

The bottom fixture also supports the bottom roller so the lower section of the door remains correctly positioned in the vertical track.

### Outside Hookup Design

The BB-5 uses an OUTSIDE HOOKUP configuration.

This means the lift cable attaches to the drilled pin on the outside-hookup portion of the bottom bracket rather than using a traditional residential Milford-pin arrangement.

This configuration is commonly found on heavier-duty sectional door systems where the existing hardware is designed specifically around an outside cable hookup.

Always replace the original bracket with the same hookup style unless the complete door system has been properly engineered for a different configuration.

### Heavy-Duty 11-Gauge Construction

The BB-5 is manufactured from 11-gauge steel.

Compared with lighter residential bottom brackets, the heavier construction makes it suitable for more demanding sectional-door applications.

The bracket should still be selected based on the exact door hardware configuration rather than gauge alone.

### Designed for 2" Track

The BB-5 is intended for garage door systems using compatible:

2" TRACK

Do not confuse this model with larger outside-hookup brackets intended for 3" track systems.

SSC also offers other outside-hookup bottom bracket configurations for different applications.

### BB-5 vs. Other SSC Outside Hookup Brackets

SSC offers several heavy-duty outside-hookup bottom brackets.

BB-5 – Part 258
- 2" track
- 11 gauge
- Drilled pin
- Approximately 6-1/2" high
- Sold as a pair

BB-7 – Part 727
- 2" track
- Larger heavy-duty configuration
- 11 gauge
- Drilled pin

BB-6 – Part 728
- 3" track
- Larger heavy-duty configuration
- 11 gauge
- Drilled pin

These brackets should NOT automatically be considered interchangeable.

Always verify the existing bracket dimensions, track size, cable hookup, roller configuration, and mounting pattern.

### Common Replacement Reasons

Replace the BB-5 bottom brackets if the existing hardware is:

- Bent
- Cracked
- Severely rusted
- Damaged at the cable attachment
- Distorted after a broken cable
- Damaged after a spring or counterbalance failure
- Worn around the roller position
- Structurally weakened

A damaged bottom bracket can affect:

- Cable alignment
- Door level
- Roller position
- Track travel
- Counterbalance performance
- Overall door safety

### Compatibility Check

Before ordering, verify:

- 2" track
- Existing outside-hookup configuration
- Original bracket dimensions
- Cable attachment style
- Roller stem size
- Door thickness
- Mounting-hole pattern
- Left/right bracket orientation

Do not order based only on the physical appearance of the bracket.

### Sold as a Pair

This listing includes:

- 1 – Left-Hand SSC BB-5 Bottom Bracket
- 1 – Right-Hand SSC BB-5 Bottom Bracket

One pair is normally required for one sectional garage door.

### Package Contents

Includes:

- 2 – SSC BB-5 Outside Hookup Bottom Brackets
- Drilled Cable Attachment Pins

Rollers, lift cables, mounting fasteners, torsion springs, cable drums, and other garage door hardware are not included unless specifically stated otherwise.

### IMPORTANT SAFETY WARNING

Garage door bottom brackets are directly connected to the lift cables and may be under EXTREME SPRING TENSION.

DO NOT loosen, remove, modify, or adjust the bottom brackets while the garage door counterbalance system is under tension.

Improper removal can cause:

- Lift cable release
- Violent bracket movement
- Sudden garage door movement
- Serious injury
- Property damage

Before servicing bottom brackets:

- Secure the garage door
- Properly release or control spring tension
- Confirm the lift cables are fully unloaded
- Follow the garage door manufacturer's service procedures
- Inspect cables, rollers, drums, and related hardware

Bottom bracket replacement should be performed by a trained garage door technician familiar with torsion and extension spring systems.

After installation, verify that both cables are properly attached and tensioned, the bottom rollers travel smoothly, and the garage door remains level and properly balanced throughout its full travel.