3PCS HSS Step Drill in Metal Case (GMAS003)

• Customized: Non-Customized
• Standard: Many
• Length: Many
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: GMAS003
• Type: Countersink Drill Bit
• Material: High Speed Steel
• Usage: Steel Plate Drilling
• Size: Available
• Free Sample: Available
• Delivery Time: 15-35 Days
• Surface: Ti-Coated
• Transport Package: Adjustment According to Customers′ Requirements
• Specification: all sizes are available
• Trademark: GOLDMOON
• Origin: Danyang
• HS Code: 82075090
• Production Capacity: 1, 000, 000 Set/Year

Product Description

Product name	3pcs hss step drill set in metal case
Material	HSS 4241/ HSS 4341/ HSS 6542/ HSS M35
Item NO.	GMAS003
Shank	Straight or triangle flat type
Surface	titanium coated
Size	4-12mm x 9 step
	4-22mm x 10 step
	4-30mm x 14 step
Delivery time	25-35 days
Package	Metal case, color box is avaliable

Features
Double spiral flutes for efficient swarf clearance.
Allows clog-free, precision drilling of eighteen different size holes with just three bits.

Chemical composition     

Material	Component (%)
HSS 4241	C (0.9~1.0); Si(1.0~1.3); Mn(0.25~0.4); P(0~0.035); S(0~0.009);  Cr(3.8~4.2); Mo(0.55~0.85); W(1.6~2.0); V (0.4~0.65); Co(0)
HSS 4341	C (0.83~0.93); Si(0.2~0.4); Mn(0.2~0.4); P(0~0.03); S(0~0.009);  Cr(3.8~4.4); Mo(2.5~3.5); W(3.5~4.5); V (1.2~1.8); Co(0)
HSS 6542 (M2)	C (0.8~0.9); Si(0.2~0.45); Mn(0.15~0.4); P(0~0.03); S(0~0.009);  Cr(3.8~4.4); Mo(4.6~4.9); W(5.6~5.9); V(1.8~2.0); Co(0)
HSS 9341	C (0.77~0.87); Si(0.2~0.4); Mn(0.2~0.4); P(0~0.03); S(0~0.009);  Cr(3.8~4.4); Mo(2.7~3.3); W(8.5~9.5); V(1.3~1.7); Co(0)
HSS M35 (Co5%)	C (0.8~0.9); Si(0.2~0.45); Mn(0.15~0.4); P(0~0.03); S(0~0.009);  Cr(3.8~4.4); Mo(4.6~4.9); W(5.6~5.9);V(1.8~2.0); Co(4.6~4.9)