Socket clamp: two steel halves joined by two bolts and nuts

A socket clamp and its dimension drawing, from the SIGMA spec sheet. The item number sets the size and whether washers are included.

Item # SC08LW Questions and answers (4)

Socket Clamps

Steel clamps that keep the joints of underground cast iron and ductile iron water pipe from separating, per the spec sheet. 3 to 24 in.

Priced by request

Add it to your quote list or call 800.999.2550.

3 to 24 in., with or without washers
Bolt size and clamp I.D. by size, from the spec sheet
See all specifications

Product: Socket clamps

Type: Socket clamp only, less washers

Size: 8 in.

Made: Ask your regional team

Material: As listed

As SIGMA lists it.

Your distributor

SIGMA sells through waterworks distributors. Order with item # SC08LW.

Quote from SIGMA

Job location

Sends your quote list to the right regional team.

Quantity

Download the socket clamp spec sheet

Need help on the job?

Call 800.999.2550 with the pipe size and whether you need washers.

Find your regional team Documents

Everything about this item: 8 in.

Details, specs, every size and the questions buyers ask. Open what you need.

Product detailsWhat it is, highlights and documents

About socket clamps

Steel socket clamps that keep the joints of underground AWWA cast iron and ductile iron water pipe from separating, per the spec sheet. Each size comes with washers or as the clamp only. Bolt size and I.D. for each clamp-only item are under Specifications.

Highlights

3 to 24 in.
With or without washers

Documents

Socket clamp spec sheetPDF · April 2016

SpecificationsSocket clamp only, less washers, 8 in.

Socket clamp only, less washers, 8 in.

Item number	SC08LW
Item	Socket clamp only, less washers
Size	8 in.
Made	Ask your regional team
Material	As listed
Pressure rating	Not listed
Bolt size and I.D. (spec sheet)	5/8 x 3-1/4 in. bolts; 9.05 in. I.D.
Weight	Ask your regional team
Pack quantity
In the Extended Range catalog	Page

Socket clamps

Use	Underground AWWA cast iron and ductile iron water pipe, to keep joints from separating, per the spec sheet
Material	Steel, per the spec sheet
Sizes	3, 4, 6, 8, 10, 12, 14, 16, 18, 20 and 24 in.

Buying

With washers	The clamp with washers, as SIGMA lists it
Clamp only	Less washers. The spec sheet gives the bolt size and I.D. for these items
Washers	Socket clamp washers, 3/4 and 1 in., as SIGMA lists them
Bolts	The price list does not say whether bolts are included. Ask your regional team

Ordering

Pricing	By request. Add items to your quote list or ask your regional team

From the Extended Products price catalog (rev. 7/29/26) and the socket clamp spec sheet (April 2016).

Every size and item numberItem numbers by size

The sizes that come with the choices picked above. Pick a size to load it.

Socket clamps and washers: item numbers by size
Size	Item #	Weight (lb)
	SC03LW
	SC04LW
	SC06LW
	SC08LW
	SC10LW
	SC12LW
	SC14LW
	SC16LW
	SC18LW
	SC20LW
	SC24LW

Item numbers from the Extended Products price catalog (rev. 7/29/26), which is not posted online. These items are priced by request.

Questions and answers4 questions buyers ask about socket clamps

How are these items priced?

Socket clamps and washers are priced by request. Add items to your quote list, ask your regional team, or call 800.999.2550 with the item numbers. SIGMA sells through waterworks distributors, and your distributor sets your price.

With washers or clamp only?

The price list carries each size both ways. The clamp-only items are listed less washers. Socket clamp washers, 3/4 and 1 in., are also sold on their own.