SSC BB-100 Residential Garage Door Bottom Brackets with Milford Pin – Pair

The SSC BB-100 is a heavy-duty residential garage door bottom bracket set designed for sectional overhead doors.

Mounted at the bottom corners of the garage door, the brackets provide the connection point for the lift cables and support the bottom roller position as the door travels through the track.

Constructed from durable 13-gauge steel and equipped with a Milford-pin cable attachment, the BB-100 is a proven replacement bottom fixture for many residential garage door systems.

This listing includes ONE PAIR — one left-hand and one right-hand bottom bracket.

### Product Features

- SSC BB-100 residential bottom bracket
- SSC part number 263
- Sold as a pair
- Includes left-hand and right-hand brackets
- Heavy-duty 13-gauge steel construction
- Milford-pin lift cable attachment
- Approximately 5-11/16" high
- Approximately 2-11/16" wide
- 1-1/4" side flange
- Designed for residential sectional garage doors
- Common replacement for damaged or corroded bottom fixtures
- Suitable for many standard 2" residential track systems when dimensions match

### Specifications

- Manufacturer: Service Spring Corp / SSC
- Model: BB-100
- Part Number: 263
- Product Type: Residential Bottom Bracket Set
- Material: Steel
- Gauge: 13 Gauge
- Cable Attachment: Milford Pin
- Height: Approximately 5-11/16"
- Width: Approximately 2-11/16"
- Side Flange: Approximately 1-1/4"
- Track Application: Common Residential 2" Track Systems
- Quantity: 2 Brackets / 1 Pair
- Position: Left & Right Bottom Corners of Door

### What Is a Bottom Bracket Used For?

The bottom bracket mounts to the lowest garage door section and forms an important part of the door's lifting system.

The basic load path is:

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

The lift cable attaches to the bottom bracket. As the cable drum winds the lift cable, the bottom bracket transfers that lifting force into the garage door.

The bottom fixture also positions the bottom roller so the door can travel through the vertical and curved track.

### Milford Pin Cable Attachment

The BB-100 uses a traditional Milford-pin cable attachment.

The loop or termination of the compatible lift cable engages the pin at the bottom fixture, providing a secure lifting connection when correctly installed.

Because the lift cable connects directly to this bracket, the BB-100 is a safety-critical component of the garage door counterbalance system.

### Sold as a Pair

This listing includes:

- 1 – Left-Hand BB-100 Bottom Bracket
- 1 – Right-Hand BB-100 Bottom Bracket

One pair is normally required for one sectional garage door.

Replacing both brackets can be a good choice when both original fixtures show similar corrosion, wear, deformation, or age.

### Common Applications

Ideal for compatible:

- Residential sectional garage doors
- Torsion-spring garage doors
- Extension-spring garage doors
- Standard 2" residential track systems
- Replacement and repair installations
- New sectional-door installations using matching hardware

Always compare the original fixture dimensions and cable attachment before ordering.

### Common Reasons for Replacement

Bottom brackets should be replaced if the existing hardware is:

- Bent
- Cracked
- Severely rusted
- Damaged around the roller location
- Worn at the cable attachment
- Distorted after a broken cable
- Damaged after a spring failure
- Modified or structurally weakened

A damaged bottom fixture can affect:

- Lift cable alignment
- Roller position
- Door level
- Track movement
- Counterbalance performance

### Compatibility

The BB-100 is a common residential bottom bracket, but garage door bottom fixtures are not completely universal.

Before ordering, verify:

- Existing bracket dimensions
- Garage door thickness
- Track size
- Roller stem size
- Cable attachment style
- Mounting-hole configuration
- Left/right orientation

The BB-100 is commonly used with residential 2" track and doors approximately 1-3/8" to 2" thick when the hardware configuration matches.

### BB-100 vs. SRBB-50

SSC offers several residential bottom-bracket designs.

BB-100:
- 13 gauge
- Milford pin
- Approximately 5-11/16" H × 2-11/16" W
- 1-1/4" side flange
- Traditional fixed bottom-fixture design

SRBB-50:
- 13 gauge
- Milford pin
- Approximately 5-1/4" H × 2-3/4" W
- 1.30" side flange
- Removable roller carrier

These brackets should not automatically be considered interchangeable. Compare the existing door hardware before ordering.

### Package Contents

Includes:

- 1 – Left-Hand SSC BB-100 Bottom Bracket
- 1 – Right-Hand SSC BB-100 Bottom Bracket

Rollers, lift cables, mounting fasteners, springs, 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 a bottom bracket while the counterbalance system is under tension.

Improper removal can cause the lift cable, bracket, torsion system, or garage door to move violently and may cause severe injury or property damage.

Before servicing a bottom bracket:

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

Bottom-bracket replacement is strongly recommended for trained garage door technicians familiar with torsion and extension spring systems.

After installation, verify that both lift cables are correctly attached and tensioned, both rollers travel smoothly, and the garage door remains level and properly balanced through its entire travel.