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Threaded Square Tube Inserts

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Threaded Square Tube Inserts, or simply Square Thread Inserts, are used to protect assemblies from the share edge of the tube and provide an aesthetically pleasing appearance. The threaded tube inserts have an internal thread that can accommodate components, such as leveling feet, tilt glides or castors.

Our Square Metal Threaded Inserts are made from High Density Polyethylene (HDPE) with Zinc Plated Steel threaded insert. Ideal for adjustable leveling mounts and feet, and ribbed to accommodate multiple gauges. They are blank in appearance.

If you're looking for something more robust, perhaps view our Square Heavy Duty Threaded Inserts. Made from glass-filled black Nylon with a Brass threaded insert. These threaded tubing inserts can be used indoors and outdoors - so are highly versatile. The high load rating is a great choice for machinery use.

Perhaps try our Plastic Threaded Tubing Inserts - made from Nylon, and available in a choice of Black and Natural colors. These are suitable for use with adjustable feet and tilt glides.

If a single-material option is your preference, our All-Metal Square Tube Inserts might be just right for your application. This thread steel tube option is made from Zinc Plated Steel. The metal ribs lock on to the inside of a square tube providing a tough and secure assembly.

Our square thread insert range is available in a selection of styles, materials and size options to suit your every need.

Customers who purchased Threaded Square Tube Inserts may also purchase Leveling Feet.

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31 results
Product SKUs information
Item Code Price range Availability Compatible Outside Tube Diameter Thread Size Color Material Compatible Tube Gauge View
$0.3037 - $0.8935 3488 In stock
M6
Black
HDPE
$0.7248 - $2.1353 300 In stock
M8
Black
HDPE
$0.9482 - $2.7817 3800 In stock
M10
Black
HDPE
$0.3506 - $1.0324 Request the lead time here
M6
Black
HDPE
$0.9108 - $2.6839 4100 In stock
M8
Black
HDPE
$0.6426 - $1.8923 4900 In stock
M10
Black
HDPE
$0.4565 - $1.3417 743 In stock
M8
Black
HDPE
$0.762 - $2.2331 4415 In stock
M10
Black
HDPE
$0.374 - $1.1011 5829 In stock
M8
Black
HDPE
$0.7954 - $2.331 450 In stock
M12
Black
HDPE
$0.4898 - $1.4459 1490 In stock
M10
Black
HDPE
498583 $0.2939 - $0.8599 947 In stock
M6
Black
HDPE
$0.3272 - $0.9619 2750 In stock
M8
Black
HDPE
$0.6095 - $1.7886 742 In stock
M8
Black
HDPE
498597 $0.9834 - $2.8993 Request the lead time here
M12
Black
HDPE
$0.5743 - $3.7136 1748 In stock
1.250 in
Black
HDPE;Steel
16-18
$0.5246 - $3.4073 2775 In stock
1.250 in
Black
HDPE;Steel
12-14
$0.5246 - $3.4073 648 In stock
1.250 in
Black
HDPE;Steel
16-18
$0.3295 - $2.1439 7169 In stock
1.000 in
Black
HDPE;Steel
16-18
SQM0150A $0.2948 - $1.9105 Request the lead time here
0.750 in
Black
HDPE;Steel
16-18
  • of 2
Square Glide - Fitting Style - Ribbed ; Material - HDPE

498584

Price Range
$0.8935 - $0.3037

Stock Levels
3488 In stock
Attributes
  • Maximum Compatible Wall Thickness
    0.059 in
  • Head Length
    0.787 in
  • Head Width
    0.787 in
  • Threaded Center
    Yes
  • Thread Size
    M6
Square Glide - Fitting Style - Ribbed ; Material - HDPE

498592

Price Range
$2.1353 - $0.7248

Stock Levels
300 In stock
Attributes
  • Maximum Compatible Wall Thickness
    0.059 in
  • Head Length
    1.575 in
  • Head Width
    1.575 in
  • Threaded Center
    Yes
  • Thread Size
    M8
Square Glide - Fitting Style - Ribbed ; Material - HDPE

498596

Price Range
$2.7817 - $0.9482

Stock Levels
3800 In stock
Attributes
  • Maximum Compatible Wall Thickness
    0.059 in
  • Head Length
    1.969 in
  • Head Width
    1.969 in
  • Threaded Center
    Yes
  • Thread Size
    M10
Square Glide - Fitting Style - Ribbed ; Material - HDPE

498586

Price Range
$1.0324 - $0.3506

Stock Levels
Request the lead time here
Attributes
  • Maximum Compatible Wall Thickness
    0.059 in
  • Head Length
    0.984 in
  • Head Width
    0.984 in
  • Threaded Center
    Yes
  • Thread Size
    M6
Square Glide - Fitting Style - Ribbed ; Material - HDPE

498595

Price Range
$2.6839 - $0.9108

Stock Levels
4100 In stock
Attributes
  • Maximum Compatible Wall Thickness
    0.059 in
  • Head Length
    1.969 in
  • Head Width
    1.969 in
  • Threaded Center
    Yes
  • Thread Size
    M8
Square Glide - Fitting Style - Ribbed ; Material - HDPE

498591

Price Range
$1.8923 - $0.6426

Stock Levels
4900 In stock
Attributes
  • Maximum Compatible Wall Thickness
    0.059 in
  • Head Length
    1.378 in
  • Head Width
    1.378 in
  • Threaded Center
    Yes
  • Thread Size
    M10
Square Glide - Fitting Style - Ribbed ; Material - HDPE

498588

Price Range
$1.3417 - $0.4565

Stock Levels
743 In stock
Attributes
  • Maximum Compatible Wall Thickness
    0.059 in
  • Head Length
    1.181 in
  • Head Width
    1.181 in
  • Threaded Center
    Yes
  • Thread Size
    M8
Square Glide - Fitting Style - Ribbed ; Material - HDPE

498593

Price Range
$2.2331 - $0.762

Stock Levels
4415 In stock
Attributes
  • Maximum Compatible Wall Thickness
    0.059 in
  • Head Length
    1.575 in
  • Head Width
    1.575 in
  • Threaded Center
    Yes
  • Thread Size
    M10
Square Glide - Fitting Style - Ribbed ; Material - HDPE

498587

Price Range
$1.1011 - $0.374

Stock Levels
5829 In stock
Attributes
  • Maximum Compatible Wall Thickness
    0.059 in
  • Head Length
    0.984 in
  • Head Width
    0.984 in
  • Threaded Center
    Yes
  • Thread Size
    M8
Square Glide - Fitting Style - Ribbed ; Material - HDPE

498594

Price Range
$2.331 - $0.7954

Stock Levels
450 In stock
Attributes
  • Maximum Compatible Wall Thickness
    0.059 in
  • Head Length
    1.575 in
  • Head Width
    1.575 in
  • Threaded Center
    Yes
  • Thread Size
    M12
Square Glide - Fitting Style - Ribbed ; Material - HDPE

498589

Price Range
$1.4459 - $0.4898

Stock Levels
1490 In stock
Attributes
  • Maximum Compatible Wall Thickness
    0.059 in
  • Head Length
    1.181 in
  • Head Width
    1.181 in
  • Threaded Center
    Yes
  • Thread Size
    M10
Square Glide - Fitting Style - Ribbed ; Material - HDPE

498583

Price Range
$0.8599 - $0.2939

Stock Levels
947 In stock
Attributes
  • Maximum Compatible Wall Thickness
    0.059 in
  • Head Length
    0.748 in
  • Head Width
    0.748 in
  • Threaded Center
    Yes
  • Thread Size
    M6
Square Glide - Fitting Style - Ribbed ; Material - HDPE

498585

Price Range
$0.9619 - $0.3272

Stock Levels
2750 In stock
Attributes
  • Maximum Compatible Wall Thickness
    0.059 in
  • Head Length
    0.787 in
  • Head Width
    0.787 in
  • Threaded Center
    Yes
  • Thread Size
    M8
Square Glide - Fitting Style - Ribbed ; Material - HDPE

498590

Price Range
$1.7886 - $0.6095

Stock Levels
742 In stock
Attributes
  • Maximum Compatible Wall Thickness
    0.059 in
  • Head Length
    1.378 in
  • Head Width
    1.378 in
  • Threaded Center
    Yes
  • Thread Size
    M8
Square Glide - Fitting Style - Ribbed ; Material - HDPE

498597

Price Range
$2.8993 - $0.9834

Stock Levels
Request the lead time here
Attributes
  • Maximum Compatible Wall Thickness
    0.059 in
  • Head Length
    1.969 in
  • Head Width
    1.969 in
  • Threaded Center
    Yes
  • Thread Size
    M12
Square Glide - 31.8 mm | 1.250 in; 16-18; HDPE;Steel; Polished

SQM0650A

Price Range
$3.7136 - $0.5743

Stock Levels
1748 In stock
Attributes
  • Compatible Outside Tube Diameter
    1.250 in
  • Minimum Compatible Wall Thickness
    0.049 in
  • Maximum Compatible Wall Thickness
    0.065 in
  • Compatible Tube Gauge
    16-18
  • Threaded Center
    Yes
Square Glide - 31.8 mm | 1.250 in; 12-14; HDPE;Steel; Polished

SQM0700A

Price Range
$3.4073 - $0.5246

Stock Levels
2775 In stock
Attributes
  • Compatible Outside Tube Diameter
    1.250 in
  • Minimum Compatible Wall Thickness
    0.083 in
  • Maximum Compatible Wall Thickness
    0.109 in
  • Compatible Tube Gauge
    12-14
  • Threaded Center
    Yes
Square Glide - 28.6 mm | 1.125 in; 16-18; HDPE;Steel; Polished

SQM0600A

Price Range
$3.4073 - $0.5246

Stock Levels
648 In stock
Attributes
  • Compatible Outside Tube Diameter
    1.250 in
  • Minimum Compatible Wall Thickness
    0.049 in
  • Maximum Compatible Wall Thickness
    0.065 in
  • Compatible Tube Gauge
    16-18
  • Threaded Center
    Yes
Square Glide - 25.4 mm | 1.000 in; 16-18; HDPE;Steel; Polished

SQM0300A

Price Range
$2.1439 - $0.3295

Stock Levels
7169 In stock
Attributes
  • Compatible Outside Tube Diameter
    1.000 in
  • Minimum Compatible Wall Thickness
    0.049 in
  • Maximum Compatible Wall Thickness
    0.065 in
  • Compatible Tube Gauge
    16-18
  • Threaded Center
    Yes
Square Glide - 19.1 mm | 0.750 in; 16-18; HDPE;Steel; Polished

SQM0150A

Price Range
$1.9105 - $0.2948

Stock Levels
Request the lead time here
Attributes
  • Compatible Outside Tube Diameter
    0.750 in
  • Minimum Compatible Wall Thickness
    0.049 in
  • Maximum Compatible Wall Thickness
    0.065 in
  • Compatible Tube Gauge
    16-18
  • Threaded Center
    Yes