Old Sumner Part Number
787900 / 787901 / 787902
The B&B SUMNER Fat Jack™ Series is a family of high‑performance pipe jack stands engineered for the heaviest industrial applications. Built from rugged 1.25" steel tubing and equipped with a 1.5" ACME fine adjustment thread, Fat Jack™ Mini, Midi, and Maxi models deliver exceptional strength, stability, and reliability on the job. Each stand is rated to support loads up to 6,000 lbs (2,725 kg), giving welders and pipefitters the confidence to handle large-diameter pipe safely at low, mid, or high working heights.
- 4700 – Fat Jack™ Maxi with V-head: 36"–61" height range for the tallest applications.
- 4700SWH – Fat Jack™ Maxi with steel wheel head: 36"–61" height range with steel rollers for pipe rotation.
- 4700SSWH – Fat Jack™ Maxi with stainless steel wheel head: 36"–61" height range with stainless rollers for corrosive environments.
- 4701 – Fat Jack™ Midi with V-head: 26.5"–44.5" mid‑height range for versatile everyday use.
- 4701SWH – Fat Jack™ Midi with steel wheel head: 26.5"–44.5" height range with steel rollers.
- 4701SSWH – Fat Jack™ Midi with stainless steel wheel head: 26.5"–44.5" height range with stainless rollers.
- 4702 – Fat Jack™ Mini with V-head: 16"–28.5" low‑height range for tight or ground‑level work.
- 4702SWH – Fat Jack™ Mini with steel wheel head: 16"–28.5" height range with steel rollers.
- 4702SSWH – Fat Jack™ Mini with stainless steel wheel head: 16"–28.5" height range with stainless rollers.
- Each Fat Jack™ model supports loads up to 6,000 lbs (2,725 kg) for heavy-duty pipe handling.
- 1.5" ACME fine adjustment thread and large ergonomic handle provide smooth, precise height changes.
- Quick‑secure double locking pin system delivers fast, reliable height locking on the jobsite.
- Constructed from 1.25" steel tubing for superior strength, rigidity, and long service life.
- Wide base design increases stability and helps reduce tipping risk under large loads.
- Available with V-head, steel wheel, or stainless steel wheel heads to match different applications.
- Maximum pipe capacity up to 36" (900 mm) with V-head and 24" (600 mm) with roller heads.
- Three height ranges: Mini for low work, Midi for mid‑elevation, and Maxi for tall pipe runs.
- Bulk crate options (4700x60, 4701x75, 4702x65) available for outfitting shops and field crews.
- Load Capacity: 6,000 lbs (2,725 kg) for all Fat Jack™ models.
- Height Ranges: Maxi (4700‑series): 36"–61" (914–1,549 mm); Midi (4701‑series): 26.5"–44.5" (673–1,130 mm); Mini (4702‑series): 16"–28.5" (406–724 mm).
- Pipe Capacity: Up to 36" (900 mm) with V-head; up to 24" (600 mm) with roller heads.
Old Sumner Part Number
787900 / 787901 / 787902
Old B&B Part Number
n/a
The B&B SUMNER Fat Jack™ Series is a family of high‑performance pipe jack stands engineered for the heaviest industrial applications. Built from rugged 1.25" steel tubing and equipped with a 1.5" ACME fine adjustment thread, Fat Jack™ Mini, Midi, and Maxi models deliver exceptional strength, stability, and reliability on the job. Each stand is rated to support loads up to 6,000 lbs (2,725 kg), giving welders and pipefitters the confidence to handle large-diameter pipe safely at low, mid, or high working heights.
- 4700 – Fat Jack™ Maxi with V-head: 36"–61" height range for the tallest applications.
- 4700SWH – Fat Jack™ Maxi with steel wheel head: 36"–61" height range with steel rollers for pipe rotation.
- 4700SSWH – Fat Jack™ Maxi with stainless steel wheel head: 36"–61" height range with stainless rollers for corrosive environments.
- 4701 – Fat Jack™ Midi with V-head: 26.5"–44.5" mid‑height range for versatile everyday use.
- 4701SWH – Fat Jack™ Midi with steel wheel head: 26.5"–44.5" height range with steel rollers.
- 4701SSWH – Fat Jack™ Midi with stainless steel wheel head: 26.5"–44.5" height range with stainless rollers.
- 4702 – Fat Jack™ Mini with V-head: 16"–28.5" low‑height range for tight or ground‑level work.
- 4702SWH – Fat Jack™ Mini with steel wheel head: 16"–28.5" height range with steel rollers.
- 4702SSWH – Fat Jack™ Mini with stainless steel wheel head: 16"–28.5" height range with stainless rollers.
- Each Fat Jack™ model supports loads up to 6,000 lbs (2,725 kg) for heavy-duty pipe handling.
- 1.5" ACME fine adjustment thread and large ergonomic handle provide smooth, precise height changes.
- Quick‑secure double locking pin system delivers fast, reliable height locking on the jobsite.
- Constructed from 1.25" steel tubing for superior strength, rigidity, and long service life.
- Wide base design increases stability and helps reduce tipping risk under large loads.
- Available with V-head, steel wheel, or stainless steel wheel heads to match different applications.
- Maximum pipe capacity up to 36" (900 mm) with V-head and 24" (600 mm) with roller heads.
- Three height ranges: Mini for low work, Midi for mid‑elevation, and Maxi for tall pipe runs.
- Bulk crate options (4700x60, 4701x75, 4702x65) available for outfitting shops and field crews.
- Load Capacity: 6,000 lbs (2,725 kg) for all Fat Jack™ models.
- Height Ranges: Maxi (4700‑series): 36"–61" (914–1,549 mm); Midi (4701‑series): 26.5"–44.5" (673–1,130 mm); Mini (4702‑series): 16"–28.5" (406–724 mm).
- Pipe Capacity: Up to 36" (900 mm) with V-head; up to 24" (600 mm) with roller heads.











