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2 1/2 inch length Thread Cutting Screws (ASME B18. 6.4)

Thread Cutting Screws are a type of screw with a specific hardness, thread design, and point that can cut new threads in a pre-drilled hole in thicker metal. They come with a variety of different point types depending on the application.

56 results, (click on any line for more information)

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
AbabaCASelf-Tapping Thread Cutting Screw (types f,1,23,25)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10 x 2 1/2#10 x 2 1/2 sq-drive bugle hd d/w screw t-17 s/s b18.6.42190
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AbabaCASelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Clear#6-32 x 2 1/26-32 x 2 1/2 p-flat m-scr stl znc b18.6.4100
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AbabaCASelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Clear#9 x 2 1/2#9 x 2 1/2 p-flat part-brd t-17 w/nib hrd stl znc b18.6.46200
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AbabaCASelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Clear#9 x 2 1/2#9 x 2 1/2 sq drv flat hd t-17 w/nib hrd stl znc b18.6.4900
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GLFOHSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPlain#12-24 x 2 1/2#12-24x2-1/2 phil flat reamer w/wings w.a.r. coated b18.6.4 () () ()1200
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ASMCILSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Clear1/4-20 x 2 1/21/4-20x2 1/2 (ft) coarse tcs phil flat hd type-f low carb zp b18.6.4100
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AbabaCASelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Clear#10 x 2 1/2#10 x 2 1/2 combo sq/phil mod.truss t-17 hardened steel z b18.6.4100
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EximS'poreSelf-Tapping Thread Cutting Screw (types f,1,23,25)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#1/2-13 x 2 1/2screw hex headstainless steel 18-8#1/2-13 x 2-1/2 in full thread b18.6.4108
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SIIINSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPlain#8-9 x 2 1/2# 8-9 x 2 1/2 square flat head with nibs under head coarse thread screws double type-17 ultra guard b18.6.45800
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SIIINSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPhosphate#12 x 2 1/2#12 x 2-1/2 flat phil twinfast black phos c1022 2000 per box b18.6.4201900
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SIIINSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPhosphate#8 x 2 1/2#8 x 2-1/2 phil flat twinfast black phos c1022 hard 3 500 per box b18.6.4211143
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SIIINSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPlain#8 x 2 1/2#8 x 2-1/2 phil flat twinfast dry lube screw. b18.6.432900
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SIIINSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPhosphate#9-10 x 2 1/2# 9-10 x 2 1/2 square/phillips flat head with nibs under head coarse thread type-17 black phosphate/wax screws b18.6.4600
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SIIINSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Clear#9 x 2 1/2screw flat head 9 x 2-1/2 l/r nibs 17 zinc(2.5m/bx) b18.6.46500
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Intl FastFLSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Clear#8 x 2 1/2combo sq/phillips flat w/ nibs coarse thred type-17 pt daggerz daggerz dlflcz08212 b18.6.422m
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QFCTXSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Clear5/16-18 x 2 1/25/16-18x2 1/2 torx pan type-f zinc b18.6.4400
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QFCTXSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPlain1/4-20 x 2 1/21/4-20x2 1/2 slotted hex washer thread cutting screw type-f b18.6.436000
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QFCTXSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPlain1/4-20 x 2 1/21/4-20x2 1/2 slotted hex washer thread cutting screw type-f b18.6.413185
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B & K FASTPASelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Clear#8 x 2 1/2#8 x 2 1/2 phillips flat hd s m s zinc b18.6.44195
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B & K FASTPASelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Clear#10 x 2 1/2#10 x 2 1/2 phillips flat hd s m s zinc b18.6.42908
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B & K FASTPASelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Clear#12 x 2 1/2#12 x 2 1/2 phillips flat hd s m s zinc b18.6.42454
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B & K FASTPASelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Clear#14 x 2 1/2#14 x 2 1/2 phillips flat hd s m s zinc b18.6.42043
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B & K FASTPASelf-Tapping Thread Cutting Screw (types f,1,23,25)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10 x 2 1/2#10 x 2 1/2 phil flat s m s 18-8 stainless b18.6.4100
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B & K FASTPASelf-Tapping Thread Cutting Screw (types f,1,23,25)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#12 x 2 1/2#12 x 2 1/2 phil flat s m s 18-8 stainless b18.6.41715
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B & K FASTPASelf-Tapping Thread Cutting Screw (types f,1,23,25)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#14 x 2 1/2#14 x 2 1/2 phil flat s m s 18-8 stainless b18.6.41000
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B & K FASTPASelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Clear1/4-20 x 2 1/21/4-20 x 2 1/2 phil flt thd cutting screw typef zinc b18.6.4755
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B & K FASTPASelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPlain3/8-16 x 2 1/23/8-16 x 2 1/2 hwh slotted thd cutting screw ty f b18.6.4400
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B & K FASTPASelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPlain5/16-18 x 2 1/25/16-18 x 2 1/2 torx pan thread cutting screw type-f b18.6.4315
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Marine FastenersFLSelf-Tapping Thread Cutting Screw (types f,1,23,25)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 2 1/21/2-13x2-1/2 phil flat 18-8ss b18.6.45940
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Marine FastenersFLSelf-Tapping Thread Cutting Screw (types f,1,23,25)316, 317, A4 StainlessPlain1/4-20 x 2 1/21/4-20 x 2-1/2 sl flat 316ss b18.6.42150
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OSSCORISelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPlain#9 x 2 1/2#9x2 1/2 qwik screw w/nibs ph/sq type-17 b18.6.4470
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OSSCORISelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Clear#8 x 2 1/2#8x2 1/2 qwik screw w/nibs ph/sq type-17 plated b18.6.42,000
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Bostwick INSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Clear1/4-20 x 2 1/21/4-20 x 2 1/2 t/f scr phil flat type-f zinc b18.6.41
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NBSILSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPhosphate5/16-18 x 2 1/25/16-18 x 2-1/2 flat hd t-40 6-lobe floor board screw type-f blk phos. b18.6.410.4
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JET FITTINGCASelf-Tapping Thread Cutting Screw (types f,1,23,25)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 2 1/21/4-20x2 1/2 type-f thread cutting screws 6-lobe (torx) flat head 18-8 stainless steel b18.6.4500
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KBSTNSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Yellow#8 x 2 1/2#8x2-1/2 flat sq dp t-17quick drive yellowzinc b18.6.46,000
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KBSTNSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelDip-Spin, Spray-Spin Basecoat + Topcoats (Dacromet, Doerken, Geomet, Magni, etc.)#9 x 2 1/2#9 x 2 1/2 flat sq t-17 nibs w/s dacro b18.6.4113,525
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KBSTNSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Clear#9 x 2 1/2#9 x 2 1/2 flat sq t-17 nibs w/s #8head plated b18.6.45,000
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KBSTNSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelFree Zinc Basecoat + Ceramic Topcoat (Ruspert, Ruspro, Dagger-Guard, etc.)#10 x 2 1/2#10 x 2 1/2 flat sq t-17 nibs w/s green ceramic b18.6.42,790
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KBSTNSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPlain#10 x 2 1/2#10 x 2 1/2 flat sq/phil w/s t-17 nibs b18.6.467,040
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KBSTNSelf-Tapping Thread Cutting Screw (types f,1,23,25)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8 x 2 1/2#8 x 2 1/2 bugle square type-17 s/s b18.6.43,235
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KBSTNSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelBlack Oxide#9 x 2 1/2#9 x 2 1/2 flat sq t-17 nibs w/s black #8head b18.6.47,500
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KBSTNSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Clear#10 x 2 1/2#10 x 2 1/2 truss sq-phil w/s t-17 shk-slotted plated b18.6.44,551
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KBSTNSelf-Tapping Thread Cutting Screw (types f,1,23,25)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8 x 2 1/2#8 x 2 1/2 flat sq t-17 nibs w/s s/s b18.6.48,200
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KBSTNSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPlain#10 x 2 1/2#10 x 2 1/2 flat star t17 nibs w/s acq coating b18.6.415,800
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KBSTNSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Yellow#9 x 2 1/2#9 x 2 1/2 flat star t17 nibs w/s yellowznc b18.6.410,000
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KBSTNSelf-Tapping Thread Cutting Screw (types f,1,23,25)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10 x 2 1/2#10 x 2 1/2 flat star t17 nibs w/s s/s b18.6.45,250
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KBSTNSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPlain#9 x 2 1/2#9 x 2 1/2 flat star t17 nibs w/s acq coating b18.6.422,733
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KBSTNSelf-Tapping Thread Cutting Screw (types f,1,23,25)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10 x 2 1/2#10 x 2 1/2 flat sq t-17 nibs w/s s/s b18.6.44,650
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KBSTNSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPlain#8 x 2 1/2#8 x 2 1/2 flat sq type-17 nibs w/s black b18.6.410,000
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KBSTNSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPlain1/4-20 x 2 1/21/4-20 x 2 1/2 flat sixlobe!t/c type-f b18.6.44,585
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KBSTNSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPlain5/16-18 x 2 1/25/16-18 x 2 1/2 flat sixlobe!t/c type-f b18.6.44,781
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WSBKYSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPlain10-13 x 2 1/2screw wo ph flat 82 po 10-13x2 1/2 b18.6.423,778
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WSBKYSelf-Tapping Thread Cutting Screw (types f,1,23,25)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-8 x 2 1/2screw wo sq flat 18-8 10-8x2 1/2 b18.6.4113,892
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WSBKYSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelZinc/Clear82 8 x 2 1/2screw wo flat 82 st (zt) ph 8x2 1/2 b18.6.47,350
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All SizeTXSelf-Tapping Thread Cutting Screw (types f,1,23,25)SteelPlain1/4-20 x 2 1/21/4-20 x 2-1/2 flat phil type-f screw b18.6.4233
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