Joist Supports | McMaster-Carr

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System of Measurement

Height

1 1/8" to 1 3/8"

1 1/8" to 6 3/4"

1 5/8" to 2 1/4"

1 5/8" to 11 1/8"

1 3/4" to 8 3/4"

1 3/4" to 11 3/4"

1 3/4" to 14 3/4"

1 7/8" to 2 1/8"

2 1/4" to 2 1/2"

2 1/4" to 20 1/4"

2 5/16" to 3 1/8"

2 1/2" to 2 3/4"

2 1/2" to 3 1/4"

Jack Type

Mount Type

Weight Capacity

Less than 10,000 lb.

10,000 lb. to 19,999 lb.

20,000 lb. to 29,999 lb.

30,000 lb. to 99,999 lb.

100,000 lb. or greater

Material

Stainless Steel

Mount Movement

Bracket Type

Overall Height

1 1/8" to 1 3/8"

1 7/8" to 2 1/8"

2 1/4" to 2 1/2"

2 5/16" to 3 1/8"

2 1/2" to 2 3/4"

2 7/8" to 3 1/16"

3 1/8" to 3 13/16"

3 3/8" to 3 1/2"

Working Orientation

Lift

Thread Size

Capacity per Mount

Less than 1,000 lb.

1,000 lb. to 1,999 lb.

2,000 lb. to 9,999 lb.

10,000 lb. to 29,999 lb.

30,000 lb. or greater

Power Source

Base Material

Stainless Steel

Base Diameter

Weight Capacity @ Minimum Height

1,750 lb. @ 4 3/4"

7/8 ton @ 4 3/4"

18,000 lb. @ 16"

18,000 lb. @ 25"

18,000 lb. @ 40"

17,000 lb. @ 68"

6,400 lb. @ 78"

9,300 lb. @ 120"

Length

Base Width

Thread Length

RoHS

REACH

Export Control Classification Number (ECCN)

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

DFARS Specialty Metals

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174 Products

Material Handling

Jack Posts

Prop up beams and joists to keep them from drooping

Jacks

Lift, hold, push, and position heavy objects

Jack Stands

Support vehicles and equipment for maintenance, inspection, and loading

Building and Machinery Hardware

Leveling Mounts

Leveling Mounts

Level machines and workbenches on uneven surfaces, reduce vibration, and protect floors

Brackets

Connect surfaces in an assembly

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)