ISO – Sussex Tool and Supply

Advent Tool 1.75 mm Pitch TiN ISO Thread Mill Insert

External Thread, Neutral Face, 1″ LOC , 0.25″ Height, 0.093″Thick EDP# 50608, P/N ATM-38A1.75MMC, 1.75-ISO, TiN Coating

SKU: ATM-38A1.75MMC Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.00 mm Pitch Bright ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.31″ Height, 0.13″Thick EDP# 50838, P/N ATM-410A1.0MM, 1.0-ISO, Uncoated

SKU: ATM-410A1.0MM Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 6.00 mm Pitch Bright ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1.5″ LOC , 0.375″ Height, 0.13″Thick EDP# 50729, P/N ATM-410A6.0AMMP, 6.0-ISO, Uncoated

SKU: ATM-410A6.0AMMP Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.25 mm Pitch TiAlN ISO Thread Mill Insert

External Thread, Neutral Face, 1″ LOC , 0.25″ Height, 0.093″Thick EDP# 50628, P/N ATM-38A1.25MMZ, 1.25-ISO, TiAlN Coating

SKU: ATM-38A1.25MMZ Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.50 mm Pitch TiN ISO Thread Mill Insert

External Thread, Neutral Face, 1″ LOC , 0.25″ Height, 0.093″Thick EDP# 50616, P/N ATM-38A1.5MMC, 1.5-ISO, TiN Coating

SKU: ATM-38A1.5MMC Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.75 mm Pitch AlTiN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.25″ Height, 0.093″Thick EDP# 50686, P/N ATM-38B1.75MMV, 1.75-ISO, AlTiN Coating

SKU: ATM-38B1.75MMV Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 5.00 mm Pitch AlTiN ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1.5″ LOC , 0.375″ Height, 0.13″Thick EDP# 50746, P/N ATM-410A5.0MMPV, 5.0-ISO, AlTiN Coating

SKU: ATM-410A5.0MMPV Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 5.00 mm Pitch TiN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.375″ Height, 0.13″Thick EDP# 50749, P/N ATM-410A5.0MME2C, 5.0-ISO, TiN Coating

SKU: ATM-410A5.0MME2C Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.25 mm Pitch TiAlN ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1″ LOC , 0.25″ Height, 0.093″Thick EDP# 50633, P/N ATM-38A1.25MMPZ, 1.25-ISO, TiAlN Coating

SKU: ATM-38A1.25MMPZ Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.75 mm Pitch TiAlN ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1″ LOC , 0.25″ Height, 0.093″Thick EDP# 50614, P/N ATM-38A1.75MMPZ, 1.75-ISO, TiAlN Coating

SKU: ATM-38A1.75MMPZ Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 5.00 mm Pitch TiN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.375″ Height, 0.13″Thick EDP# 50741, P/N ATM-410A5.0MMC, 5.0-ISO, TiN Coating

SKU: ATM-410A5.0MMC Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 2.50 mm Pitch TiN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.31″ Height, 0.13″Thick EDP# 50796, P/N ATM-410A2.5MMC, 2.5-ISO, TiN Coating

SKU: ATM-410A2.5MMC Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 4.00 mm Pitch TiAlN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.375″ Height, 0.13″Thick EDP# 50772, P/N ATM-410A4.0MME2Z, 4.0-ISO, TiAlN Coating

SKU: ATM-410A4.0MME2Z Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 3.50 mm Pitch Bright ISO Thread Mill Insert

External Thread, Neutral Face, 1″ LOC , 0.31″ Height, 0.093″Thick EDP# 50567, P/N ATM-38A3.5MM, 3.5-ISO, Uncoated

SKU: ATM-38A3.5MM Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.50 mm Pitch TiN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.31″ Height, 0.13″Thick EDP# 50820, P/N ATM-410A1.5MMC, 1.5-ISO, TiN Coating

SKU: ATM-410A1.5MMC Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 2.50 mm Pitch Bright ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1.5″ LOC , 0.31″ Height, 0.13″Thick EDP# 50799, P/N ATM-410A2.5MMP, 2.5-ISO, Uncoated

SKU: ATM-410A2.5MMP Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.75 mm Pitch TiAlN ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1.5″ LOC , 0.25″ Height, 0.093″Thick EDP# 50691, P/N ATM-38B1.75MMPZ, 1.75-ISO, TiAlN Coating

SKU: ATM-38B1.75MMPZ Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 6.00 mm Pitch AlTiN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.375″ Height, 0.13″Thick EDP# 50719, P/N ATM-410A6.0BMMV, 6.0-ISO, AlTiN Coating

SKU: ATM-410A6.0BMMV Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 2.00 mm Pitch AlTiN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.31″ Height, 0.13″Thick EDP# 50805, P/N ATM-410A2.0MMV, 2.0-ISO, AlTiN Coating

SKU: ATM-410A2.0MMV Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 3.00 mm Pitch TiN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.31″ Height, 0.093″Thick EDP# 50660, P/N ATM-38B3.0MMC, 3.0-ISO, TiN Coating

SKU: ATM-38B3.0MMC Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 3.50 mm Pitch TiAlN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.375″ Height, 0.13″Thick EDP# 50783, P/N ATM-410A3.5MME2Z, 3.5-ISO, TiAlN Coating

SKU: ATM-410A3.5MME2Z Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.75 mm Pitch AlTiN ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1.5″ LOC , 0.25″ Height, 0.093″Thick EDP# 50690, P/N ATM-38B1.75MMPV, 1.75-ISO, AlTiN Coating

SKU: ATM-38B1.75MMPV Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 4.00 mm Pitch Bright ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1.5″ LOC , 0.375″ Height, 0.13″Thick EDP# 50766, P/N ATM-410A4.0MMP, 4.0-ISO, Uncoated

SKU: ATM-410A4.0MMP Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.00 mm Pitch TiN ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1″ LOC , 0.25″ Height, 0.093″Thick EDP# 50640, P/N ATM-38A1.0MMPC, 1.0-ISO, TiN Coating

SKU: ATM-38A1.0MMPC Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 5.00 mm Pitch TiAlN ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1.5″ LOC , 0.375″ Height, 0.13″Thick EDP# 50747, P/N ATM-410A5.0MMPZ, 5.0-ISO, TiAlN Coating

SKU: ATM-410A5.0MMPZ Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.00 mm Pitch AlTiN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.25″ Height, 0.093″Thick EDP# 50711, P/N ATM-38B1.0MMV, 1.0-ISO, AlTiN Coating

SKU: ATM-38B1.0MMV Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 2.50 mm Pitch Bright ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1″ LOC , 0.25″ Height, 0.093″Thick EDP# 50594, P/N ATM-38A2.5MMP, 2.5-ISO, Uncoated

SKU: ATM-38A2.5MMP Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.50 mm Pitch Bright ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.31″ Height, 0.13″Thick EDP# 50819, P/N ATM-410A1.5MM, 1.5-ISO, Uncoated

SKU: ATM-410A1.5MM Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 2.00 mm Pitch Bright ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.31″ Height, 0.13″Thick EDP# 50803, P/N ATM-410A2.0MM, 2.0-ISO, Uncoated

SKU: ATM-410A2.0MM Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 3.50 mm Pitch Bright ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1″ LOC , 0.31″ Height, 0.093″Thick EDP# 50571, P/N ATM-38A3.5MMP, 3.5-ISO, Uncoated

SKU: ATM-38A3.5MMP Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 2.50 mm Pitch AlTiN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.25″ Height, 0.093″Thick EDP# 50669, P/N ATM-38B2.5MMV, 2.5-ISO, AlTiN Coating

SKU: ATM-38B2.5MMV Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.25 mm Pitch AlTiN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.25″ Height, 0.093″Thick EDP# 50703, P/N ATM-38B1.25MMV, 1.25-ISO, AlTiN Coating

SKU: ATM-38B1.25MMV Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.50 mm Pitch AlTiN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.25″ Height, 0.093″Thick EDP# 50694, P/N ATM-38B1.5MMNT, 1.5-ISO, AlTiN Coating

SKU: ATM-38B1.5MMNT Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.50 mm Pitch TiAlN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.25″ Height, 0.093″Thick EDP# 50696, P/N ATM-38B1.5MMZ, 1.5-ISO, TiAlN Coating

SKU: ATM-38B1.5MMZ Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 4.50 mm Pitch TiN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.375″ Height, 0.13″Thick EDP# 50760, P/N ATM-410A4.5MME2C, 4.5-ISO, TiN Coating

SKU: ATM-410A4.5MME2C Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 2.50 mm Pitch TiN ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1.5″ LOC , 0.31″ Height, 0.13″Thick EDP# 50800, P/N ATM-410A2.5MMPC, 2.5-ISO, TiN Coating

SKU: ATM-410A2.5MMPC Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 2.50 mm Pitch Bright ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1.5″ LOC , 0.25″ Height, 0.093″Thick EDP# 50671, P/N ATM-38B2.5MMP, 2.5-ISO, Uncoated

SKU: ATM-38B2.5MMP Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 5.50 mm Pitch TiN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.375″ Height, 0.13″Thick EDP# 50737, P/N ATM-410A5.5BMMC, 5.5-ISO, TiN Coating

SKU: ATM-410A5.5BMMC Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.25 mm Pitch TiAlN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.31″ Height, 0.13″Thick EDP# 50833, P/N ATM-410A1.25MMZ, 1.25-ISO, TiAlN Coating

SKU: ATM-410A1.25MMZ Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.25 mm Pitch TiAlN ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1.5″ LOC , 0.31″ Height, 0.13″Thick EDP# 50837, P/N ATM-410A1.25MMPZ, 1.25-ISO, TiAlN Coating

SKU: ATM-410A1.25MMPZ Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 3.50 mm Pitch TiN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.375″ Height, 0.13″Thick EDP# 50782, P/N ATM-410A3.5MME2C, 3.5-ISO, TiN Coating

SKU: ATM-410A3.5MME2C Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 5.00 mm Pitch Bright ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1.5″ LOC , 0.375″ Height, 0.13″Thick EDP# 50744, P/N ATM-410A5.0MMP, 5.0-ISO, Uncoated

SKU: ATM-410A5.0MMP Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 2.00 mm Pitch TiAlN ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1.5″ LOC , 0.25″ Height, 0.093″Thick EDP# 50683, P/N ATM-38B2.0MMPZ, 2.0-ISO, TiAlN Coating

SKU: ATM-38B2.0MMPZ Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 4.00 mm Pitch TiAlN ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.375″ Height, 0.13″Thick EDP# 50765, P/N ATM-410A4.0MMZ, 4.0-ISO, TiAlN Coating

SKU: ATM-410A4.0MMZ Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.00 mm Pitch TiAlN ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1.5″ LOC , 0.25″ Height, 0.093″Thick EDP# 50716, P/N ATM-38B1.0MMPZ, 1.0-ISO, TiAlN Coating

SKU: ATM-38B1.0MMPZ Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 1.25 mm Pitch Bright ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1″ LOC , 0.25″ Height, 0.093″Thick EDP# 50629, P/N ATM-38A1.25MMP, 1.25-ISO, Uncoated

SKU: ATM-38A1.25MMP Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 3.50 mm Pitch Bright ISO Thread Mill Insert

External Thread, Neutral Face, 1.5″ LOC , 0.31″ Height, 0.093″Thick EDP# 50651, P/N ATM-38B3.5MM, 3.5-ISO, Uncoated

SKU: ATM-38B3.5MM Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 6.00 mm Pitch TiN ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1.5″ LOC , 0.375″ Height, 0.13″Thick EDP# 50730, P/N ATM-410A6.0AMMPC, 6.0-ISO, TiN Coating

SKU: ATM-410A6.0AMMPC Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 2.00 mm Pitch AlTiN ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1.5″ LOC , 0.25″ Height, 0.093″Thick EDP# 50682, P/N ATM-38B2.0MMPV, 2.0-ISO, AlTiN Coating

SKU: ATM-38B2.0MMPV Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank

Advent Tool 3.00 mm Pitch TiN ISO Thread Mill Insert

External Thread, 5? Positive Rake, 1.5″ LOC , 0.375″ Height, 0.13″Thick EDP# 50789, P/N ATM-410A3.0MMPC, 3.0-ISO, TiN Coating

SKU: ATM-410A3.0MMPC Categories: Indexable Threading, Inserts Tags: Advent Tool, aerospace, automotive, energy, indexable thread mills, ISO, job shop, medical, thread mills, USA made, weldon shank