7/8"-9 Anchors | McMaster-Carr

Clear All

	System of Measurement System of Measurement

Inch

Metric

	Diameter Diameter

7/8"

	Length Length

	Anchor Type Anchor Type

	Stud

	Thread Size Thread Size	Show

7/8"-9

	Thread Size Thread Size	Hide

	Material Material

Iron

Stainless Steel

Steel

	Finish Finish

Zinc Yellow-Chromate Plated

	For Use In For Use In

Concrete

	Thread Length Thread Length

	Pull-Out Strength Pull-Out Strength

2,000 to 2,999 lbs.

3,000 to 3,999 lbs.

4,000 lbs. or greater

	Drill Bit Size Drill Bit Size

7/8"

	Minimum Installation Depth Minimum Installation Depth

	Screw Size Screw Size

7/8"

	Shear Strength Shear Strength

2,000 to 2,999 lbs.

3,000 to 9,999 lbs.

	Removable Removable

Permanent

	Required Installation Torque Required Installation Torque

	Thread Type Thread Type

UNC

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Washer OD Washer OD

1 3/4"

2 1/4"

	Nut Width Nut Width

1 5/16"

	Thread Spacing Thread Spacing

Coarse

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

View catalog pages (8)

Forward

How can we improve?

77 Products

Selecting Clamps Using Pipe, Conduit, or Tubing Trade Size

Selecting U-Bolts Using Pipe, Conduit, or Tubing Trade Size

Also known as wedge anchors, the base expands as you tighten the nut for a secure hold in concrete. They're often used to anchor machinery. Pull-out strength and shear strength values are 25% of the ultimate values.

Zinc-plated and zinc yellow-chromate plated steel anchors are corrosion resistant in wet environments.

Galvanized steel anchors are more corrosion resistant than zinc-plated steel anchors. They must be used with other galvanized fasteners.

ICC listed anchors are often required for new construction. Anchors listed for cracked concrete are often required in environments which may cause concrete to crack during the life of the anchor.

For technical drawings and 3-D models, click on a part number.

							Strength, lbs.					Each		Package
Lg.	Thread Size	Min. Thread Lg.	Washer OD	Nut Wd.	Drill Bit Size	Min. Installation Dp.	Pull-Out	Shear	Tested In	Required Installation Torque, ft.-lbs.	Specifications Met		Each	Pkg. Qty.		Pkg.
Zinc-Plated Steel
7/8" Dia.
6"	7/8"-9	2 3/4"	1 3/4"	1 5/16"	7/8"	4"	3,068	2,925	4,000 psi Concrete	175	ICC Listed for Cracked Concrete	000000000	00000	10	000000000	000000
8"	7/8"-9	4 3/4"	1 3/4"	1 5/16"	7/8"	4"	3,068	2,925	4,000 psi Concrete	175	ICC Listed for Cracked Concrete	000000000	00000	4	000000000	00000
10"	7/8"-9	6 1/2"	1 3/4"	1 5/16"	7/8"	4"	3,068	2,925	4,000 psi Concrete	175	ICC Listed for Cracked Concrete	000000000	00000	4	000000000	00000
Zinc Yellow-Chromate Plated Steel—Grade 5
7/8" Dia.
6"	7/8"-9	2 1/4"	1 3/4"	1 5/16"	7/8"	4"	3,475	5,393	4,000 psi Concrete	225	__	000000000	00000	10	000000000	000000
8"	7/8"-9	2 1/4"	1 3/4"	1 5/16"	7/8"	4"	3,475	5,393	4,000 psi Concrete	225	__	000000000	00000	4	000000000	00000
10"	7/8"-9	2 1/4"	1 3/4"	1 5/16"	7/8"	4"	3,475	5,393	4,000 psi Concrete	225	__	000000000	00000	4	000000000	00000
Galvanized Steel
7/8" Dia.
6"	7/8"-9	2 1/8"	2 1/4"	1 5/16"	7/8"	4"	4,150	8,130	4,000 psi Concrete	250	__	000000000	00000	4	000000000	00000
8"	7/8"-9	2 1/8"	2 1/4"	1 5/16"	7/8"	4"	4,150	8,130	4,000 psi Concrete	250	__	000000000	00000	4	000000000	00000
10"	7/8"-9	2 1/8"	2 1/4"	1 5/16"	7/8"	4"	4,150	8,130	4,000 psi Concrete	250	__	000000000	00000	4	000000000	00000

18-8 Stainless Steel Stud Anchors for Concrete

These 18-8 stainless steel anchors have good chemical resistance and may be mildly magnetic. Also known as wedge anchors, the base expands as you tighten the nut for a secure hold in concrete. They're often used to anchor machinery. Pull-out strength and shear strength values are 25% of the ultimate values.

For technical drawings and 3-D models, click on a part number.

							Strength, lbs.					Each		Package
Lg.	Thread Size	Min. Thread Lg.	Washer OD	Nut Wd.	Drill Bit Size	Min. Installation Dp.	Pull-Out	Shear	Tested In	Required Installation Torque, ft.-lbs.	Specifications Met		Each	Pkg. Qty.		Pkg.
18-8 Stainless Steel
7/8" Dia.
6"	7/8"-9	2 1/8"	1 3/4"	1 5/16"	7/8"	4"	2,400	3,900	4,000 psi Concrete	200	FM Approved, UL Listed	000000000	000000	4	000000000	0000000
8"	7/8"-9	4 3/4"	2 1/4"	1 5/16"	7/8"	4"	2,400	3,900	4,000 psi Concrete	250	FM Approved, UL Listed	000000000	00000	4	000000000	000000
10"	7/8"-9	2 1/8"	1 3/4"	1 5/16"	7/8"	4"	2,400	3,900	4,000 psi Concrete	200	FM Approved, UL Listed	000000000	00000	4	000000000	000000

Super-Corrosion-Resistant 316 Stainless Steel Stud Anchors for Concrete

More corrosion resistant than 18-8 stainless steel anchors, these 316 stainless steel anchors have excellent resistance to chemicals and salt water and may be mildly magnetic. Also known as wedge anchors, the base expands as you tighten the nut for a secure hold in concrete. They're often used to anchor machinery. Pull-out strength and shear strength values are 25% of the ultimate values.

For technical drawings and 3-D models, click on a part number.

							Strength, lbs.					Each		Package
Lg.	Thread Size	Min. Thread Lg.	Washer OD	Nut Wd.	Drill Bit Size	Min. Installation Dp.	Pull-Out	Shear	Tested In	Required Installation Torque, ft.-lbs.	Specifications Met		Each	Pkg. Qty.		Pkg.
316 Stainless Steel
7/8" Dia.
6"	7/8"-9	2 1/8"	1 3/4"	1 5/16"	7/8"	4"	2,400	3,900	4,000 psi Concrete	200	FM Approved, UL Listed	000000000	000000	4	000000000	0000000
8"	7/8"-9	2 1/8"	1 3/4"	1 5/16"	7/8"	4"	2,400	3,900	4,000 psi Concrete	200	FM Approved, UL Listed	000000000	00000	4	000000000	000000
10"	7/8"-9	2 1/8"	1 3/4"	1 5/16"	7/8"	4"	2,400	3,900	4,000 psi Concrete	200	FM Approved, UL Listed	000000000	00000	4	000000000	000000

Beam Clamps for Threaded Rod

Attach these clamps to the flange of a beam, then hang a threaded rod from the threaded hole.

Styles A-C, F, J and K have a locknut to prevent loosening.

Zinc-plated iron clamps have mild corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Bottom Mount

Steel
Style	For Beam Shape	For Thread Size	For Max. Beam Thick.	Capacity, lbs.	Mount Type	Nut Style	Throat Dp.	Lg.	Wd.	Ht.	Threaded Rod Included		Each
B	Flat, Tapered	7/8"-9	1"	900	Clamp On	Locknut	1 1/4"	3 3/8"	1 1/4"	3"	No	00000000	000000

Bottom and Top Mount

Zinc-Plated Iron
Style	For Beam Shape	For Thread Size	For Max. Beam Thick.	Capacity, lbs.	Mount Type	Nut Style	Throat Dp.	Lg.	Wd.	Ht.	Threaded Rod Included		Each
J	Flat, Tapered	7/8"-9	3/4"	1,200	Clamp On	Locknut	5/8"	2 1/4"	1 1/4"	1 3/4"	No	0000000	000000

Center-Mount Beam Clamps for Threaded Rod

For centered load distribution, these clamps grip both sides of the beam and hang threaded rod from below.

Style B clamps have an adjusting screw to fit a range of beam widths and an eye nut for hanging threaded rod.

For technical drawings and 3-D models, click on a part number.

Bottom-Center Mount
Style	For Beam Shape	For Thread Size	For Beam Wd.	For Max. Beam Thick.	Capacity, lbs.	Mount Type	Lg.	Wd.	Ht.	Threaded Rod Included		Each
Iron
B	Flat, Tapered	7/8"-9	2"-7"	9/16"	1,350	Clamp On	10"	1 1/8"	5 3/4"	No	0000000	000000

Pivoting Threaded-Rod-Mount Loop Hangers

Also known as clevis hangers, these have a pivoting loop that adjusts for line movement and vibration. Combine with a threaded rod or other fastener to hang from the ceiling. To mount, slide threaded rod into the unthreaded hole on top of the hanger and secure with a nut (sold separately). When used with threaded rod, the hanging height can be adjusted after material is installed.

Zinc-plated steel hangers have good corrosion resistance. Rubber-coated steel hangers reduce wear on material. 304 stainless steel hangers have excellent corrosion resistance and good chemical resistance. 316 stainless steel hangers have excellent corrosion and chemical resistance.

For technical drawings and 3-D models, click on a part number.

ID
Inch	Metric, mm	For Pipe Size	For Thread Size	Color	Cap., lbs.	Lg.	Wd.	Ht.	Thick.	Mounting Hole Dia.	Includes	Specifications Met		Each
Steel
10 3/4"	273	10	7/8"-9	__	3,600	14 1/8"	1 3/4"	15"	3/16"	15/16"	Closure Axel and Two Nuts	Fed. Spec. WW-H-171, Type 1 MSS-SP-58, Type 1 UL Listed	0000000	000000
12 3/4"	324	12	7/8"-9	__	3,800	16 3/4"	1 3/4"	17 5/16"	3/16"	15/16"	Closure Axel and Two Nuts	Fed. Spec. WW-H-171, Type 1 MSS-SP-58, Type 1 UL Listed	0000000	00000
Zinc-Plated Steel
10 3/4"	273	10	7/8"-9	__	3,600	12 1/4"	2"	16 1/4"	1/4"	7/8"	Closure Bolt and Nut	Fed. Spec. WW-H-171, Type 1 MSS-SP-58, Type 1	0000000	00000
12 3/4"	324	12	7/8"-9	__	3,800	14 1/4"	2"	18 3/8"	1/4"	7/8"	Closure Bolt and Nut	Fed. Spec. WW-H-171, Type 1 MSS-SP-58, Type 1	0000000	00000
Rubber-Coated Steel
10 3/4"	273	10	7/8"-9	Black	3,600	13 1/4"	1 3/4"	15 7/16"	1/4"	15/16"	Closure Bolt and Nut	MSS-SP-58, Type 1	00000000	00000
12 3/4"	324	12	7/8"-9	Black	3,800	15 1/4"	2"	18"	1/4"	15/16"	Closure Bolt and Nut	MSS-SP-58, Type 1	00000000	00000
304 Stainless Steel
10 3/4"	273	10	7/8"-9	__	3,600	12"	1 3/4"	15 1/4"	1/4"	15/16"	Closure Bolt and Nut	Fed. Spec. WW-H-171, Type 1 MSS-SP-58, Type 1	00000000	000000
12 3/4"	324	12	7/8"-9	__	3,800	14"	2"	18"	1/4"	15/16"	Closure Bolt and Nut	Fed. Spec. WW-H-171, Type 1 MSS-SP-58, Type 1	00000000	000000
316 Stainless Steel
10 3/4"	273	10	7/8"-9	__	3,600	13 1/4"	1 3/4"	15 7/16"	1/4"	15/16"	Closure Bolt and Nut	MSS-SP-58, Type 1	00000000	000000

Threaded-Rod-Mount Roller Loop Hangers

A roller on the bottom of these hangers compensates for movement due to expansion and contraction, such as in hydraulic applications. Combine with a threaded rod or other fastener to hang from the ceiling. To mount, slide threaded rod into the unthreaded hole on top of the hanger and secure with a nut (sold separately).

For technical drawings and 3-D models, click on a part number.

ID
Inch	Metric, mm	For Pipe Size	For Thread Size	Roller Material	Cap., lbs.	Lg.	Wd.	Ht.	Thick.	Mounting Hole Dia.		Each
Steel
10 3/4"	273	10	7/8"-9	Cast Iron	960	14 1/4"	2 1/2"	14 15/16"	13/32"	15/16"	0000000	0000000
12 3/4"	324	12	7/8"-9	Cast Iron	1,200	16 3/4"	2 1/2"	17 3/8"	17/32"	15/16"	0000000	000000

U-Bolt Mounting Plates

Add a mounting plate to your U-bolt for a more secure hold at the mounting surface.

Black-oxide steel mounting plates have mild corrosion resistance. Zinc-plated steel mounting plates have good corrosion resistance in most environments. 304 stainless steel mounting plates have excellent corrosion resistance and good chemical resistance. 316 stainless steel mounting plates have excellent corrosion and chemical resistance.

For technical drawings and 3-D models, click on a part number.

Black-Oxide Steel
For U-Bolt ID	Lg.	Wd.	Thick.	Ctr.-to-Ctr.	Pkg. Qty.		Pkg.
For 7/8"-9 Thread Size
12 7/8"	15 5/8"	2 1/2"	1/4"	13 1/4"	1	00000000	000000
14 1/8"	16 7/8"	2 1/2"	1/4"	15"	1	00000000	00000
16 1/8"	18 7/8"	2 1/2"	1/4"	17"	1	00000000	00000
Zinc-Plated Steel
For 7/8"-9 Thread Size
12 7/8"	15 5/8"	2 1/2"	1/4"	13 1/4"	1	0000000	00000
14 1/8"	16 7/8"	2 1/2"	1/4"	15"	1	0000000	00000
16 1/8"	18 7/8"	2 1/2"	1/4"	17"	1	0000000	00000
304 Stainless Steel
For 7/8"-9 Thread Size
12 7/8"	15 5/8"	2 1/2"	1/4"	13 1/4"	1	0000000	000000
14 1/8"	16 7/8"	2 1/2"	1/4"	15"	1	0000000	000000
16 1/8"	18 7/8"	2 1/2"	1/4"	17"	1	0000000	000000
316 Stainless Steel
For 7/8"-9 Thread Size
12 7/8"	16 1/4"	2 1/2"	1/4"	13 3/4"	1	00000000	000000
14 1/8"	19"	2 1/2"	1/4"	15"	1	00000000	000000
16 1/8"	21"	2 1/2"	1/4"	17"	1	00000000	000000

U-Bolts

Stronger than routing clamps and hangers, U-bolts support heavy pipe, tube, and conduit from ceilings, walls, and poles.

Black-oxide steel U-bolts have mild corrosion resistance. Zinc-plated steel U-bolts have good corrosion resistance in most environments. Galvanized steel U-bolts have better corrosion resistance than black-oxide and zinc-plated steel U-bolts. 304 stainless steel U-bolts have excellent corrosion resistance and good chemical resistance. 316 stainless steel U-bolts have excellent corrosion and chemical resistance.

U-bolts with four nuts allow you to secure the U-bolt from the top and the bottom.

For technical drawings and 3-D models, click on a part number.

U-Bolts
ID											Mounting Plates
Inch	Metric, mm	For Pipe Size	Ht.	Thread Lg.	Capacity, lbs.	Ctr.-to-Ctr.	No. of Nuts Included	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
Black-Oxide Steel
7/8"-9 Thread Size
12 7/8"	327	12	16 1/16"	4 1/4"	6,725	13 3/4"	2	1	00000000	000000	1	00000000	000000
14 1/8"	359	14	17 5/16"	4 1/4"	6,725	15"	2	1	00000000	00000	1	00000000	00000
16 1/8"	410	16	19 5/16"	4 1/4"	6,725	17"	2	1	00000000	00000	1	00000000	00000
Zinc-Plated Steel
7/8"-9 Thread Size
12 7/8"	327	12	16 1/16"	4 1/4"	6,725	13 3/4"	2	1	00000000	00000	1	0000000	00000
14 1/8"	359	14	17 5/16"	4 1/4"	6,725	15"	2	1	00000000	00000	1	0000000	00000
16 1/8"	410	16	19 5/16"	4 1/4"	6,725	17"	2	1	00000000	00000	1	0000000	00000
Galvanized Steel
7/8"-9 Thread Size
12 7/8"	327	12	16 1/16"	4 1/4"	6,725	13 3/4"	2	1	0000000	00000	__	000000	00
14 1/8"	359	14	17 5/16"	4 1/4"	6,725	15"	2	1	0000000	00000	__	000000	00
16 1/8"	410	16	19 5/16"	4 1/4"	6,725	17"	2	1	0000000	00000	__	000000	00
304 Stainless Steel
7/8"-9 Thread Size
12 7/8"	327	12	16 1/16"	4 1/4"	6,725	13 3/4"	2	1	00000000	000000	1	0000000	000000
14 1/8"	359	14	17 5/16"	4 1/4"	6,725	15"	2	1	00000000	000000	1	0000000	000000
16 1/8"	410	16	19 5/16"	4 1/4"	6,725	17"	2	1	00000000	000000	1	0000000	000000
316 Stainless Steel
7/8"-9 Thread Size
12 7/8"	327	12	16"	4 1/4"	7,500	13 3/4"	4	1	00000000	000000	1	00000000	000000
14 1/8"	359	14	17 3/8"	4 1/4"	7,500	15"	4	1	00000000	000000	1	00000000	000000
16 1/8"	410	16	19 3/8"	4 1/4"	7,500	17"	4	1	00000000	000000	1	00000000	000000

Rubber-Cushioned U-Bolts

A durable rubber cushion and mounting plate prevent corrosion and wear caused by metal-to-metal contact. The mounting plate is removable, so the U-bolts can be installed onto an existing line without needing to dissemble it. Use them to support heavy pipe, tube, and conduit from ceilings, walls, and poles. All include four nuts to allow fastening from the top and the bottom.

Galvanized steel U-bolts have good corrosion resistance in most environments. 304 stainless steel U-bolts have excellent corrosion resistance and good chemical resistance.

For technical drawings and 3-D models, click on a part number.

ID						Mounting Plate
Inch	Metric, mm	For Pipe Size	Ht.	Thread Lg.	Ctr.-to-Ctr.	Material	Lg.	Wd.	Thick.	No.of Nuts Included	Temp. Range, °F		Each
Galvanized Steel
7/8"-9 Thread Size
12 7/8"	327	12	16"	4 1/4"	13 3/4"	Rubber	16 1/2"	2 3/4"	1/8"	4	-65° to 250°	00000000	000000
14 1/8"	359	14	17 1/4"	3"	15"	Rubber	20"	2 3/4"	1/8"	4	-65° to 250°	00000000	00000
16 1/8"	410	16	19 1/4"	4 1/4"	17"	Rubber	22"	2 3/4"	1/8"	4	-65° to 250°	00000000	00000
304 Stainless Steel
7/8"-9 Thread Size
12 7/8"	327	12	16"	4 1/4"	13 3/4"	Rubber	16 1/2"	2 3/4"	1/8"	4	-65° to 250°	00000000	000000
14 1/8"	359	14	17 1/4"	3"	15"	Rubber	20"	2 3/4"	1/8"	4	-65° to 250°	00000000	000000
16 1/8"	410	16	19 1/4"	4 1/4"	17"	Rubber	22"	2 3/4"	1/8"	4	-65° to 250°	00000000	000000