Threaded Inserts
-
Filter
- OD Thread Rotation Right-Hand Remove This Item
- Inside Thread M12 x 1.75 Remove This Item
-
- Type
- Material
- Insert Style
- Drive
- OD Thread Rotation
- OD Thread Standard
- OD Acronym
- Wall Thickness
- Inside Thread
-
- M2 x 0.4 14 items
- 2-56 18 items
- M2.2 x 0.45 12 items
- M2.5 x 0.45 14 items
- 3-48 12 items
- 3-56 7 items
- 4-40 21 items
- 4-48 7 items
- M3 x 0.5 17 items
- 1/8-40 2 items
- 5-40 12 items
- M3.5 x 0.6 12 items
- 6-32 25 items
- 6-40 12 items
- M4 x 0.7 20 items
- 8-32 35 items
- 8-36 7 items
- 3/16-24 2 items
- 10-24 40 items
- 10-32 40 items
- M5 x 0.5 2 items
- M5 x 0.8 21 items
- 12-24 12 items
- 12-28 7 items
- M6 x 0.75 2 items
- M6 x 1 27 items
- 1/4-20 45 items
- 1/4-26 2 items
- 1/4-28 35 items
- M7 x 1 12 items
- 5/16-18 43 items
- 5/16-22 2 items
- 5/16-24 35 items
- M8 x 1 18 items
- M8 x 1.25 27 items
- M9 x 1 12 items
- M9 x 1.25 12 items
- 3/8-16 41 items
- 3/8-20 2 items
- 3/8-24 35 items
- 1/8-28 2 items
- M10 x 1 15 items
- M10 x 1.25 20 items
- M10 x 1.5 22 items
- 1/8-27 2 items
- M11 x 1 12 items
- M11 x 1.25 12 items
- M11 x 1.5 12 items
- 7/16-14 36 items
- 7/16-18 2 items
- 7/16-20 34 items
- M12 x 1 12 items
- M12 x 1.25 24 items
- M12 x 1.5 12 items
- M12 x 1.75 22 items
- 1/2-12 2 items
- 1/2-13 37 items
- 1/2-16 2 items
- 1/2-20 34 items
- 1/4-19 2 items
- 1/4-18 2 items
- M14 x 1.25 20 items
- M14 x 1.5 15 items
- M14 x 2 17 items
- 9/16-12 25 items
- 9/16-18 22 items
- 5/8-11 30 items
- 5/8-14 4 items
- 5/8-18 25 items
- M16 x 1.5 15 items
- M16 x 2 19 items
- 3/8-19 2 items
- 3/8-18 2 items
- M18 x 1.5 18 items
- M18 x 2 12 items
- M18 x 2.5 12 items
- 3/4-10 28 items
- 3/4-12 2 items
- 3/4-16 25 items
- M20 x 1.5 15 items
- M20 x 2 12 items
- M20 x 2.5 16 items
- 1/2-14 4 items
- M22 x 1.5 15 items
- M22 x 2 12 items
- 7/8-11 2 items
- M22 x 2.5 12 items
- 7/8-14 27 items
- 7/8-18 3 items
- 7/8-9 27 items
- M24 x 1.5 12 items
- M24 x 2 15 items
- M24 x 3 15 items
- 1-10 2 items
- 1-12 23 items
- 1-14 14 items
- 1-8 27 items
- M26 x 1.5 3 items
- 3/4-14 4 items
- M27 x 1.5 3 items
- M27 x 2 3 items
- M27 x 3 3 items
- M28 x 1.5 3 items
- 1-1/8-12 13 items
- 1-1/8-7 13 items
- 1-1/8-8 3 items
- M30 x 1.5 3 items
- M30 x 2 3 items
- M30 x 3 3 items
- M30 x 3.5 3 items
- 1-1/4-12 13 items
- 1-1/4-7 13 items
- 1-1/4-8 3 items
- M33 x 2 3 items
- M33 x 3 3 items
- M33 x 3.5 3 items
- 1-11 2 items
- 1-11-1/2 1 item
- M34 x 1.5 3 items
- 1-3/8-12 11 items
- 1-3/8-6 12 items
- 1-3/8-8 3 items
- M36 x 1.5 3 items
- M36 x 2 3 items
- M36 x 3 3 items
- M36 x 4 3 items
- 1-1/2-12 12 items
- 1-1/2-6 13 items
- 1-1/2-8 3 items
- M39 x 3 3 items
- M39 x 4 3 items
- M42 x 3 3 items
- 1-5/8-8 3 items
- 1-1/4-11 1 item
- M42 x 4.5 3 items
- 1-3/4-8 3 items
- M45 x 2 3 items
- M45 x 4.5 3 items
- 1-7/8-8 3 items
- M48 x 3 3 items
- M48 x 5 3 items
- 2 in-8 3 items
- M52 x 3 3 items
- M52 x 5 3 items
- 2-1/8-8 3 items
- M54 x 3 3 items
- M56 x 3 3 items
- M56 x 4 3 items
- M56 x 5.5 3 items
- 2-1/4-8 3 items
- 2-3/8-8 3 items
- 2-1/2-8 3 items
- M64 x 3 3 items
- M64 x 4 3 items
- 2-5/8-8 3 items
- 2-3/4-8 3 items
- 2-7/8-8 3 items
- 3 in-8 3 items
- 3-1/8-8 3 items
- 3-1/4-8 3 items
- 3-3/8-8 3 items
- 3-1/2-8 3 items
- Solid Blank 50 items
- Length
- Drill Size
- Decimal Outside Diameter
-
Sku #: 35L7C-C84E-C12M10-1J
M12 x 1.75 ISO x 12mm WireSert Threaded Insert for Metals - Free-Running - 18-8 Stainless - 50/pkgSpecial Price $0.56 Regular Price $0.75 -
Sku #: 35L7C-C84E-C12M15-06
M12 x 1.75 ISO x 18mm WireSert Threaded Insert for Metals - Free-Running - 18-8 Stainless - 6/pkgSpecial Price $1.31 Regular Price $1.89 -
Sku #: 35L7C-C84E-C12M15-1J
M12 x 1.75 ISO x 18mm WireSert Threaded Insert for Metals - Free-Running - 18-8 Stainless - 50/pkgSpecial Price $0.61 Regular Price $0.83 -
Sku #: 35L7C-C84E-C12M20-1J
M12 x 1.75 ISO x 24mm WireSert Threaded Insert for Metals - Free-Running - 18-8 Stainless - 50/pkgSpecial Price $0.73 Regular Price $0.98 -
Sku #: 35L7C-C84E-C12M25-1J
M12 x 1.75 ISO x 30mm WireSert Threaded Insert for Metals - Free-Running - 18-8 Stainless - 50/pkgSpecial Price $1.17 Regular Price $1.58 -
Sku #: 35L7C-C84E-C12M30-1J
M12 x 1.75 ISO x 36mm WireSert Threaded Insert for Metals - Free-Running - 18-8 Stainless - 50/pkgSpecial Price $1.34 Regular Price $1.80 -
Sku #: 35L7C-C8M2-C12M10-1J
M12 x 1.75 ISO x 12mm WireSert Threaded Insert for Metals - Locking - 18-8 Stainless - 50/pkgSpecial Price $0.71 Regular Price $0.95 -
Sku #: 35L7C-C8M2-C12M15-1J
M12 x 1.75 ISO x 18mm WireSert Threaded Insert for Metals - Locking - 18-8 Stainless - 50/pkgSpecial Price $0.72 Regular Price $0.98 -
Sku #: 35L7C-C8M2-C12M20-1J
M12 x 1.75 ISO x 24mm WireSert Threaded Insert for Metals - Locking - 18-8 Stainless - 50/pkgSpecial Price $1.12 Regular Price $1.50 -
Sku #: 35L7C-C8M2-C12M25-1J
M12 x 1.75 ISO x 30mm WireSert Threaded Insert for Metals - Locking - 18-8 Stainless - 50/pkgSpecial Price $1.69 Regular Price $2.28 -
Sku #: 35L7C-C8M2-C12M30-1J
M12 x 1.75 ISO x 36mm WireSert Threaded Insert for Metals - Locking - 18-8 Stainless - 50/pkgSpecial Price $1.99 Regular Price $2.68 -
Sku #: 35L7GH-120175
M12 X 1.75 ISO x 18mm in. Right-Hand Helical Threaded Insert Repair Kit Single SizeSpecial Price $59.08 Regular Price $85.73 -
Sku #: 35L8C-4NEW-C12M-0A
M12 x 1.75 ISO x 16mm Thin Wall Key-Locking Insert - Non-Locking - Carbon Steel C1215Special Price $6.10 Regular Price $8.20 -
Sku #: 35L8C-4QDC-C12M-05
M12 x 1.75 ISO x 18mm Heavy Duty Key-Locking Insert - Non-Locking - Carbon Steel C1215Special Price $11.80 Regular Price $15.85 -
Sku #: 35L8C-669C-C12M-0A
M12 x 1.75 ISO x 16mm Thin Wall Key-Locking Insert - Non-Locking - 303 StainlessSpecial Price $11.91 Regular Price $16.00 -
Sku #: 35L9C-98XG-C12M-05
M12 x 1.75 ISO x 0.656 SwiftSert Threaded Insert For Metals - Carbon Steel 12L14 - Made in USASpecial Price $2.47 Regular Price $3.33 -
Sku #: 35L9C-98XM-C12M-05
M12 x 1.75 ISO x 17mm SwiftSert Threaded Insert For Metals - Carbon Steel 12L14 - Made in USASpecial Price $4.84 Regular Price $6.50 -
Sku #: 35L9C-ATR0-C12M-05
M12 x 1.75 ISO x 0.656 SwiftSert Threaded Insert For Metals - 303 Stainless - Made in USASpecial Price $7.39 Regular Price $9.93 -
Sku #: 35L9C-ATR4-C12M-05
M12 x 1.75 ISO x 17mm SwiftSert Threaded Insert For Metals - 303 Stainless - Made in USASpecial Price $7.07 Regular Price $9.50
Show / Hide Attribute Columns
Checkbox
SKU
Image
Stock
Application
Material
Insert Style
Drive
ID Thread Rotation
ID Thread Standard
ID Acronym
OD Thread Rotation
OD Thread Standard
OD Acronym
Flange/Flush
Slot Location
Wall Thickness
Flange Diameter
Inside Thread
Length
Drill Size
Decimal Outside Diameter
SKU | Image | Stock | Application | Material | Insert Style | Drive | ID Th. Rotation | ID Th. Standard | ID Acronym | OD Th. Rotation | OD Th. Standard | OD Acronym | Flange/Flush | Slot Location | Wall Thickness | Flange DIA | Inside Thread | Length | Drill Size | Dec. OD | Price | Qty | ||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
35L7C-C84E-C12M10-1J | 2-3 Days to ship | Metals | Stainless Steel 18-8 | Free-Running | Tang | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | - | Flush | - | - | - | M12 x 1.75 | 12mm | 0.4844 (31/64) | - |
Special Price
$0.56
Regular Price
$0.75
|
+ - |
|||
35L7C-C84E-C12M15-06 | 2-3 Days to ship | Metals | Stainless Steel 18-8 | Free-Running | Tang | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | - | Flush | - | - | - | M12 x 1.75 | 18mm | 0.4844 (31/64) | - |
Special Price
$1.31
Regular Price
$1.89
|
+ - |
|||
35L7C-C84E-C12M15-1J | 2-3 Days to ship | Metals | Stainless Steel 18-8 | Free-Running | Tang | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | - | Flush | - | - | - | M12 x 1.75 | 18mm | 0.4844 (31/64) | - |
Special Price
$0.61
Regular Price
$0.83
|
+ - |
|||
35L7C-C84E-C12M20-1J | 2-3 Days to ship | Metals | Stainless Steel 18-8 | Free-Running | Tang | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | - | Flush | - | - | - | M12 x 1.75 | 24mm | 0.4844 (31/64) | - |
Special Price
$0.73
Regular Price
$0.98
|
+ - |
|||
35L7C-C84E-C12M25-1J | 2-3 Days to ship | Metals | Stainless Steel 18-8 | Free-Running | Tang | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | - | Flush | - | - | - | M12 x 1.75 | 30mm | 0.4844 (31/64) | - |
Special Price
$1.17
Regular Price
$1.58
|
+ - |
|||
35L7C-C84E-C12M30-1J | 2-3 Days to ship | Metals | Stainless Steel 18-8 | Free-Running | Tang | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | - | Flush | - | - | - | M12 x 1.75 | 36mm | 0.4844 (31/64) | - |
Special Price
$1.34
Regular Price
$1.80
|
+ - |
|||
35L7C-C8M2-C12M10-1J | 2-3 Days to ship | Metals | Stainless Steel 18-8 | Locking | Tang | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | - | Flush | - | - | - | M12 x 1.75 | 12mm | 0.4844 (31/64) | - |
Special Price
$0.71
Regular Price
$0.95
|
+ - |
|||
35L7C-C8M2-C12M15-1J | 2-3 Days to ship | Metals | Stainless Steel 18-8 | Locking | Tang | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | - | Flush | - | - | - | M12 x 1.75 | 18mm | 0.4844 (31/64) | - |
Special Price
$0.72
Regular Price
$0.98
|
+ - |
|||
35L7C-C8M2-C12M20-1J | 2-3 Days to ship | Metals | Stainless Steel 18-8 | Locking | Tang | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | - | Flush | - | - | - | M12 x 1.75 | 24mm | 0.4844 (31/64) | - |
Special Price
$1.12
Regular Price
$1.50
|
+ - |
|||
35L7C-C8M2-C12M25-1J | 2-3 Days to ship | Metals | Stainless Steel 18-8 | Locking | Tang | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | - | Flush | - | - | - | M12 x 1.75 | 30mm | 0.4844 (31/64) | - |
Special Price
$1.69
Regular Price
$2.28
|
+ - |
|||
35L7C-C8M2-C12M30-1J | 2-3 Days to ship | Metals | Stainless Steel 18-8 | Locking | Tang | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | - | Flush | - | - | - | M12 x 1.75 | 36mm | 0.4844 (31/64) | - |
Special Price
$1.99
Regular Price
$2.68
|
+ - |
|||
35L7GH-120175 | 2-3 Days to ship | Metals | Stainless Steel 18-8 | Free-Running | Tang | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | - | Flush | - | - | - | M12 x 1.75 | 18mm | 0.4844 (31/64) | - |
Special Price
$59.08
Regular Price
$85.73
|
+ - |
|||
35L8C-4NEW-C12M-0A | 2-3 Days to ship | Metals | Carbon Steel C1215 | Non-Locking | - | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | ISO | Flush | - | Thin Wall | - | M12 x 1.75 | 16mm | 0.5782 (37/64) | 0.6299 (M16 x 1.50) |
Special Price
$6.10
Regular Price
$8.20
|
+ - |
|||
35L8C-4QDC-C12M-05 | 2-3 Days to ship | Metals | Carbon Steel C1215 | Non-Locking | - | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | ISO | Flush | - | Heavy Duty | - | M12 x 1.75 | 18mm | 0.6563 (21/32) | 0.7087 (M18 x 1.50) |
Special Price
$11.80
Regular Price
$15.85
|
+ - |
|||
35L8C-669C-C12M-0A | 2-3 Days to ship | Metals | Stainless Steel Type 303 | Non-Locking | - | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | ISO | Flush | - | Thin Wall | - | M12 x 1.75 | 16mm | 0.5782 (37/64) | 0.6299 (M16 x 1.50) |
Special Price
$11.91
Regular Price
$16.00
|
+ - |
|||
35L8C-66T0-C12M-05 | 2-3 Days to ship | Metals | Stainless Steel Type 303 | Internal Locking | - | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | ISO | Flush | - | Thin Wall | - | M12 x 1.75 | 16mm | 0.5782 (37/64) | 0.6299 (M16 x 1.50) | RFQ | + - |
|||
35L8C-687W-C12M | 2-3 Days to ship | Metals | Stainless Steel Type 303 | Non-Locking | - | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | ISO | Flush | - | Heavy Duty | - | M12 x 1.75 | 18mm | 0.6563 (21/32) | 0.7087 (M18 x 1.50) | RFQ | + - |
|||
35L8C-68QG-C12M-05 | 2-3 Days to ship | Metals | Stainless Steel Type 303 | Internal Locking | - | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | ISO | Flush | - | Heavy Duty | - | M12 x 1.75 | 18mm | 0.6563 (21/32) | 0.7087 (M18 x 1.50) | RFQ | + - |
|||
35L9C-98XG-C12M-05 | 2-3 Days to ship | Metals | Carbon Steel 12L14 | Free-Running | Slotted | Right-Hand | ISO Metric | ISO | Right-Hand | ANSI/ASME | UNC | Flush | - | Standard | - | M12 x 1.75 | 0.656 | 0.6563 (21/32) | 0.7500 (3/4-10) |
Special Price
$2.47
Regular Price
$3.33
|
+ - |
|||
35L9C-98XM-C12M-05 | 2-3 Days to ship | Metals | Carbon Steel 12L14 | Free-Running | Slotted | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | ISO | Flush | - | Standard | - | M12 x 1.75 | 17mm | 0.5469 (35/64) | 0.6299 (M16 x 2) |
Special Price
$4.84
Regular Price
$6.50
|
+ - |
|||
35L9C-ATR0-C12M-05 | 2-3 Days to ship | Metals | Stainless Steel Type 303 | Free-Running | Slotted | Right-Hand | ISO Metric | ISO | Right-Hand | ANSI/ASME | UNC | Flush | - | Standard | - | M12 x 1.75 | 0.656 | 0.6563 (21/32) | 0.7500 (3/4-10) |
Special Price
$7.39
Regular Price
$9.93
|
+ - |
|||
35L9C-ATR4-C12M-05 | 2-3 Days to ship | Metals | Stainless Steel Type 303 | Free-Running | Slotted | Right-Hand | ISO Metric | ISO | Right-Hand | ISO Metric | ISO | Flush | - | Standard | - | M12 x 1.75 | 17mm | 0.5469 (35/64) | 0.6299 (M16 x 2) |
Special Price
$7.07
Regular Price
$9.50
|
+ - |
- OD Thread Rotation Right-Hand Remove This Item
- Inside Thread M12 x 1.75 Remove This Item
- Type
- Material
- Insert Style
- Drive
- OD Thread Rotation
- OD Thread Standard
- OD Acronym
- Wall Thickness
- Inside Thread
-
- M2 x 0.4 14 items
- 2-56 18 items
- M2.2 x 0.45 12 items
- M2.5 x 0.45 14 items
- 3-48 12 items
- 3-56 7 items
- 4-40 21 items
- 4-48 7 items
- M3 x 0.5 17 items
- 1/8-40 2 items
- 5-40 12 items
- M3.5 x 0.6 12 items
- 6-32 25 items
- 6-40 12 items
- M4 x 0.7 20 items
- 8-32 35 items
- 8-36 7 items
- 3/16-24 2 items
- 10-24 40 items
- 10-32 40 items
- M5 x 0.5 2 items
- M5 x 0.8 21 items
- 12-24 12 items
- 12-28 7 items
- M6 x 0.75 2 items
- M6 x 1 27 items
- 1/4-20 45 items
- 1/4-26 2 items
- 1/4-28 35 items
- M7 x 1 12 items
- 5/16-18 43 items
- 5/16-22 2 items
- 5/16-24 35 items
- M8 x 1 18 items
- M8 x 1.25 27 items
- M9 x 1 12 items
- M9 x 1.25 12 items
- 3/8-16 41 items
- 3/8-20 2 items
- 3/8-24 35 items
- 1/8-28 2 items
- M10 x 1 15 items
- M10 x 1.25 20 items
- M10 x 1.5 22 items
- 1/8-27 2 items
- M11 x 1 12 items
- M11 x 1.25 12 items
- M11 x 1.5 12 items
- 7/16-14 36 items
- 7/16-18 2 items
- 7/16-20 34 items
- M12 x 1 12 items
- M12 x 1.25 24 items
- M12 x 1.5 12 items
- M12 x 1.75 22 items
- 1/2-12 2 items
- 1/2-13 37 items
- 1/2-16 2 items
- 1/2-20 34 items
- 1/4-19 2 items
- 1/4-18 2 items
- M14 x 1.25 20 items
- M14 x 1.5 15 items
- M14 x 2 17 items
- 9/16-12 25 items
- 9/16-18 22 items
- 5/8-11 30 items
- 5/8-14 4 items
- 5/8-18 25 items
- M16 x 1.5 15 items
- M16 x 2 19 items
- 3/8-19 2 items
- 3/8-18 2 items
- M18 x 1.5 18 items
- M18 x 2 12 items
- M18 x 2.5 12 items
- 3/4-10 28 items
- 3/4-12 2 items
- 3/4-16 25 items
- M20 x 1.5 15 items
- M20 x 2 12 items
- M20 x 2.5 16 items
- 1/2-14 4 items
- M22 x 1.5 15 items
- M22 x 2 12 items
- 7/8-11 2 items
- M22 x 2.5 12 items
- 7/8-14 27 items
- 7/8-18 3 items
- 7/8-9 27 items
- M24 x 1.5 12 items
- M24 x 2 15 items
- M24 x 3 15 items
- 1-10 2 items
- 1-12 23 items
- 1-14 14 items
- 1-8 27 items
- M26 x 1.5 3 items
- 3/4-14 4 items
- M27 x 1.5 3 items
- M27 x 2 3 items
- M27 x 3 3 items
- M28 x 1.5 3 items
- 1-1/8-12 13 items
- 1-1/8-7 13 items
- 1-1/8-8 3 items
- M30 x 1.5 3 items
- M30 x 2 3 items
- M30 x 3 3 items
- M30 x 3.5 3 items
- 1-1/4-12 13 items
- 1-1/4-7 13 items
- 1-1/4-8 3 items
- M33 x 2 3 items
- M33 x 3 3 items
- M33 x 3.5 3 items
- 1-11 2 items
- 1-11-1/2 1 item
- M34 x 1.5 3 items
- 1-3/8-12 11 items
- 1-3/8-6 12 items
- 1-3/8-8 3 items
- M36 x 1.5 3 items
- M36 x 2 3 items
- M36 x 3 3 items
- M36 x 4 3 items
- 1-1/2-12 12 items
- 1-1/2-6 13 items
- 1-1/2-8 3 items
- M39 x 3 3 items
- M39 x 4 3 items
- M42 x 3 3 items
- 1-5/8-8 3 items
- 1-1/4-11 1 item
- M42 x 4.5 3 items
- 1-3/4-8 3 items
- M45 x 2 3 items
- M45 x 4.5 3 items
- 1-7/8-8 3 items
- M48 x 3 3 items
- M48 x 5 3 items
- 2 in-8 3 items
- M52 x 3 3 items
- M52 x 5 3 items
- 2-1/8-8 3 items
- M54 x 3 3 items
- M56 x 3 3 items
- M56 x 4 3 items
- M56 x 5.5 3 items
- 2-1/4-8 3 items
- 2-3/8-8 3 items
- 2-1/2-8 3 items
- M64 x 3 3 items
- M64 x 4 3 items
- 2-5/8-8 3 items
- 2-3/4-8 3 items
- 2-7/8-8 3 items
- 3 in-8 3 items
- 3-1/8-8 3 items
- 3-1/4-8 3 items
- 3-3/8-8 3 items
- 3-1/2-8 3 items
- Solid Blank 50 items
- Length
-
- Drill Size
- Decimal Outside Diameter