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Choose the right threaded insert for your application and learn how to install it securely.
Brass Tapping Inserts for Hardwood
Made from brass, these inserts are nonmagnetic, mildly corrosion resistant, and electrically conductive. Also known as knife-thread inserts, they have sharp threads that cut into hardwood for a secure hold. Install using an installation bit and drill.
Inserts | Installation Bits | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Drive Style | Pkg. Qty. | Pkg. | Each | ||
Brass | |||||||||
| 4-40 | 3/8" | 17/64" | 0.266" | Slotted | 25 | 000000000 | 000000 | 000000000 | 000000 |
| 6-32 | 3/8" | 17/64" | 0.266" | Slotted | 25 | 000000000 | 00000 | 000000000 | 00000 |
| 8-32 | 3/8" | 17/64" | 0.266" | Slotted | 25 | 000000000 | 00000 | 000000000 | 00000 |
| 10-24 | 1/2" | 25/64" | 0.391" | Slotted | 25 | 000000000 | 00000 | 000000000 | 00000 |
| 10-32 | 1/2" | 25/64" | 0.391" | Slotted | 25 | 000000000 | 00000 | 000000000 | 00000 |
| 1/4"-20 | 1/2" | 25/64" | 0.391" | Slotted | 25 | 000000000 | 00000 | 000000000 | 00000 |
| 1/4"-20 | 3/4" | 25/64" | 0.391" | Slotted | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 1/4"-28 | 1/2" | 25/64" | 0.391" | Slotted | 25 | 000000000 | 00000 | 000000000 | 00000 |
| 5/16"-18 | 5/8" | 33/64" | 0.516" | Slotted | 10 | 000000000 | 0000 | 000000000 | 00000 |
| 5/16"-18 | 1" | 33/64" | 0.516" | Slotted | 5 | 000000000 | 0000 | 000000000 | 00000 |
| 5/16"-24 | 5/8" | 33/64" | 0.516" | Slotted | 10 | 000000000 | 0000 | 000000000 | 00000 |
| 3/8"-16 | 5/8" | 33/64" | 0.516" | Slotted | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 3/8"-16 | 1" | 33/64" | 0.516" | Slotted | 5 | 000000000 | 0000 | 000000000 | 00000 |
| 3/8"-24 | 5/8" | 33/64" | 0.516" | Slotted | 10 | 000000000 | 00000 | 000000000 | 00000 |
Inserts | Installation Bits | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Installed Lg., mm | Drill Bit Size | For Max. Hole Dia. | Drive Style | Pkg. Qty. | Pkg. | Each | ||
Brass | ||||||||||
| M3 | 0.5 | 9.53 | 17/64" | 0.266" | Slotted | 10 | 000000000 | 00000 | 000000000 | 000000 |
| M4 | 0.7 | 9.53 | 17/64" | 0.266" | Slotted | 10 | 000000000 | 0000 | 000000000 | 00000 |
| M5 | 0.8 | 12.7 | 25/64" | 0.391" | Slotted | 10 | 000000000 | 0000 | 000000000 | 00000 |
| M6 | 1 | 12.7 | 25/64" | 0.391" | Slotted | 10 | 000000000 | 0000 | 000000000 | 00000 |
| M8 | 1.25 | 15.88 | 33/64" | 0.516" | Slotted | 10 | 000000000 | 00000 | 000000000 | 00000 |
| M10 | 1.5 | 15.88 | 33/64" | 0.516" | Slotted | 10 | 000000000 | 00000 | 000000000 | 00000 |
Stainless Steel Tapping Inserts for Hardwood
These 18-8 stainless steel inserts have good corrosion resistance and may be mildly magnetic. Also known as knife-thread inserts, they have sharp threads that cut into hardwood for a secure hold. Install using an installation bit and drill.
Inserts | Installation Bits | |||||||
|---|---|---|---|---|---|---|---|---|
| Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Pkg. Qty. | Pkg. | Each | ||
18-8 Stainless Steel | ||||||||
| 4-40 | 3/8" | 17/64" | 17/64" | 1 | 000000000 | 00000 | 000000000 | 000000 |
| 6-32 | 3/8" | 17/64" | 17/64" | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 8-32 | 3/8" | 17/64" | 17/64" | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 10-24 | 1/2" | 25/64" | 25/64" | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 10-32 | 1/2" | 25/64" | 25/64" | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 1/4"-20 | 1/2" | 25/64" | 25/64" | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 1/4"-28 | 1/2" | 25/64" | 25/64" | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 5/16"-18 | 5/8" | 33/64" | 33/64" | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 5/16"-24 | 5/8" | 33/64" | 33/64" | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 3/8"-16 | 5/8" | 33/64" | 33/64" | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 3/8"-24 | 5/8" | 33/64" | 33/64" | 1 | 000000000 | 0000 | 000000000 | 00000 |
Inserts | Installation Bits | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Installed Lg., mm | Drill Bit Size | For Max. Hole Dia. | Pkg. Qty. | Pkg. | Each | ||
18-8 Stainless Steel | |||||||||
| M3 | 0.5 | 9.52 | 17/64" | 17/64" | 1 | 000000000 | 00000 | 000000000 | 000000 |
| M4 | 0.7 | 9.52 | 17/64" | 17/64" | 1 | 000000000 | 0000 | 000000000 | 00000 |
| M5 | 0.8 | 12.7 | 25/64" | 25/64" | 1 | 000000000 | 0000 | 000000000 | 00000 |
| M6 | 1 | 12.7 | 25/64" | 25/64" | 1 | 000000000 | 0000 | 000000000 | 00000 |
| M8 | 1.25 | 15.9 | 33/64" | 33/64" | 1 | 000000000 | 0000 | 000000000 | 00000 |
| M10 | 1.5 | 15.9 | 33/64" | 33/64" | 1 | 000000000 | 0000 | 000000000 | 00000 |
Steel Tapping Inserts for Hardwood
Steel inserts have high strength for durability. Also known as knife-thread inserts, they have sharp threads that cut into hardwood for a secure hold. Install using a hex driver or an installation bit and drill for faster installation.
Zinc-plated steel inserts are mildly corrosion resistant.
Inserts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Drive | Installation Bits | |||||||||
| Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Style | Size | Pkg. Qty. | Pkg. | Each | ||
Zinc-Plated Steel | ||||||||||
| 8-32 | 0.394" | 17/64" | 1/4" | Hex | 4 mm | 25 | 000000000 | 000000 | 000000000 | 000000 |
| 10-24 | 0.472" | 5/16" | 19/64" | Hex | 5 mm | 25 | 000000000 | 00000 | 000000000 | 00000 |
| 1/4"-20 | 0.394" | 3/8" | 3/8" | Hex | 6 mm | 25 | 000000000 | 00000 | 000000000 | 00000 |
| 1/4"-20 | 0.472" | 3/8" | 3/8" | Hex | 6 mm | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 1/4"-20 | 0.591" | 3/8" | 3/8" | Hex | 6 mm | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 1/4"-20 | 0.709" | 3/8" | 3/8" | Hex | 6 mm | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 1/4"-20 | 0.787" | 3/8" | 3/8" | Hex | 6 mm | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 1/4"-20 | 1.181" | 3/8" | 3/8" | Hex | 6 mm | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 5/16"-18 | 0.591" | 15/32" | 29/64" | Hex | 8 mm | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 5/16"-18 | 0.709" | 15/32" | 29/64" | Hex | 8 mm | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 5/16"-18 | 1.181" | 15/32" | 15/32" | Hex | 8 mm | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 3/8"-16 | 0.591" | 5/8" | 5/8" | Hex | 10 mm | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 3/8"-16 | 0.787" | 5/8" | 5/8" | Hex | 10 mm | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 3/8"-16 | 1.181" | 5/8" | 39/64" | Hex | 10 mm | 10 | 000000000 | 00000 | 000000000 | 00000 |
Brass Tapping Insert Assortments for Hardwood
Assortments include various sizes of tapping inserts for hardwood. Made from brass, they’re nonmagnetic, mildly corrosion resistant, and electrically conductive. Also known as knife-thread inserts, they have sharp threads that cut into hardwood for a secure hold. Install using an installation bit and drill.
| Includes | No. of Inserts Included | Drill Bit Size | For Max. Hole Dia. | Drive Style | Each | |
Brass Assortments | ||||||
|---|---|---|---|---|---|---|
| 6-32 Thread × 3/8" Installed Lg. (10 Each) 8-32 Thread × 3/8" Installed Lg. (10 Each) 10-32 Thread × 33/64" Installed Lg. (10 Each) 1/4"-20 Thread × 1/2" Installed Lg. (10 Each) 5/16"-18 Thread × 5/8" Installed Lg. (10 Each) 3/8"-16 Thread × 5/8" Installed Lg. (10 Each) | 60 | 1/4", 3/8", 1/2" | 1/4", 3/8", 1/2" | Slotted | 000000000 | 000000 |
For fast installation, use these installation bits with power drills and drill presses.
| For Thread Size | Hex Shank Size | Each | |
| 6-32, 8-32, M3 | 1/4" | 000000000 | 000000 |
| 8-32, 10-24, 10-32, M4, M5 | 1/4" | 000000000 | 00000 |
| 10-24, 10-32, 1/4"-20, 1/4"-28, M5 | 1/4" | 000000000 | 00000 |
| 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, M6 | 1/4" | 000000000 | 00000 |
| 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, M8 | 1/4" | 000000000 | 00000 |
| 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, M10 | 3/8" | 000000000 | 00000 |