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Alloy spiral tap american...

Alloy spiral tap american units

1. Material: tungsten steel/tungsten carbide
2. Processable: HRC40-HRC60
3. Overall smooth, complete threads
4. Can process stainless steel, cast iron, aluminum and other materials
5. Complete specifications, can be customized
6. Direct sales from Chinese source manufacturers, cheap prices

Product Detail

Threaded taps are mostly used for drilling blind holes in CNC machining centers. They have fast processing speed, high precision, good chip removal, and good alignment. Suitable for processing through holes and blind holes. Different helix angles can cope with different materials, and the cutting is good.

Specification	Flute Length(mm)	Overall Length(mm)	Shank Diameter(mm)
NO.2-56UNC	11	42	3
NO.2-64UNF	11	42	3
NO.3-48UNC	12	42	3
NO.3-56UNF	12	42	3
NO.4-40UNC	12	52	3
NO.4-48UNF	12	52	3
NO.5-40UNC	12	52	4
NO.5-44UNF	12	52	4
NO.6-32UNC	13	52	4
NO.6-40UNF	13	52	4
NO.8-32UNC	13	55	5
NO.8-36UNF	13	55	5
NO.10-24UNC	15	60	5
NO.10-32UNF	15	60	5
NO.12-32UNC	15	65	6
NO.12-28UNF	15	65	6
1/4-20UNC	17	65	6
1/4-28UNF	17	65	6
5/16-18UNC	20	72	6.1
5/16-24UNF	20	72	6.1
3/8-16UNC	22	75	7
3/8-24UNF	22	75	7
7/16-14UNC	25	83	8
7/16-20UNF	25	83	8
1/2-13UNC	25	85	9
1/2-20UNF	25	85	9

FAQ:

Question	reason	solution
Broken tap	①The thread bottom hole is too small	①Enlarge the diameter of the bottom hole as much as possible
	②The chips are not discharged well and the chips are blocked in the tap groove.	②To sharpen the edge angle or use a spiral tip tap, and for blind holes, use a spiral groove tap.
	③The thread cannot be tapped, and the drilling depth is not enough.	③Increase the drilling depth
	④Threading cutting speed is too high	④Reduce the cutting speed appropriately
	⑤The tapping tap is not coaxial with the bottom hole	⑤National calibration fixture, using floating tapping chuck
	⑥Improper selection of tap sharpening parameters	⑥Increase the tap rake angle and shorten the cutting dimension length
	⑦The workpiece hardness is unstable	⑦Control the hardness of the workpiece and use a safety chuck
	⑧Excessive tap wear	⑧Replace taps promptly
Tap chip	①The tap rake angle is too large	①Appropriately reduce the rake angle
	②Cutting per tooth of tap	②Appropriately increase the length of the cutting cone
	③The tap hardness is too high	③Appropriately reduce the hardness
	④ Tap wear	④Replace taps promptly
Taps wear out too quickly	①Tapping cutting speed is too high	①Appropriately reduce the cutting speed
	②Improper selection of tap sharpening parameters	②Appropriately reduce the rake angle and lengthen the cutting cone length
	③Improper selection of cutting fluid	③Choose cutting fluid with good lubricity
	④The hardness of the workpiece material is too high	④Proper heat treatment of the workpiece
	⑤Burn during silk sharpening	⑤Return to sharpening taps correctly
Thread pitch diameter is too large	①Improper selection of tap accuracy	①Choose a tap with appropriate accuracy
	②Improper selection of cutting fluid	②Choose the appropriate cutting fluid
	③Cutting speed is too high	③Appropriately reduce the cutting speed
	④The tap is not coaxial with the thread bottom hole of the workpiece	④ To calibrate the fixture, use a floating tapping chuck
	⑤Improper selection of tap sharpening parameters	⑤Appropriately reduce the rake angle and cutting cone relief angle
	⑥Burrs are generated in sharpening taps	⑥ Eliminate burrs produced by sharpening taps
	⑦The tap cutting cone length is too short	⑦Appropriately increase the length of the cutting cone
Thread pitch diameter is too small	①Improper selection of tap accuracy	①Choose silk fibers with appropriate precision
	②Improper selection of tap sharpening parameters	②Appropriately increase the tap rake angle and cutting cone angle
	③Improper selection of cutting fluid	③Choose a cutting fluid with good lubricity