Rotary Drag Bits

NW6R Step Drag Bits – 3 Wing – Semi Heavy Duty

NW6R Standard Duty Step Drag Bits have 3/4" thick blades and 3/16" thick carbide inserts. This bit is designed for rapid penetration in soft to medium formations (clay, sand rock or shale). The NW6R heads and connectors listed below are what we consider to be stock standard sizes, but we can custom manufacture any size that you need! The heads can be furnished with a stopper ring to provide a shouldered thread connection.

Description	Part #	NW6R Pin Connection	Lbs.	Kg
Head Only
5 1/2″ (139.7mm)	NW6R512S3	3 1/2″ NW6R	14	6.4
5 5/8″ (142.9mm)	NW6R558S3	3 1/2″ NW6R	14	6.4
5 7/8″ (149.2mm)	NW6R578S3	3 1/2″ NW6R	14	6.4
6″ (152.4mm)	NW6R600S3	3 1/2″ NW6R	15	6.8
6 1/8″ (155.6mm)	NW6R618S3	3 1/2″ NW6R	15	6.8
6 1/4″ (158.8mm)	NW6R614S3	3 1/2″ NW6R	15	6.8
6 1/2″ (165.1mm)	NW6R612S3	3 1/2″ NW6R	16	7.3
6 3/4″ (171.4mm)	NW6R634S3	3 1/2″ NW6R	16	7.3
7″ (177.8mm)	NW6R700S3	3 1/2″ NW6R	16	7.3
7 7/8″ (200.0mm)	NW6R778S3	3 1/2″ NW6R	20	9.1
8 1/2″ (208.3mm)	NW6R812S3	3 1/2″ NW6R	25	11.3
8 3/4″ (222.2mm)	NW6R834S3	3 1/2″ NW6R	26	11.8
9 7/8″ (250.8mm)	NW6R978S3	3 1/2″ NW6R	27	12.2
10 5/8″ (269.9mm)	NW6R1058S3	3 1/2″ NW6R	28	12.7
12 1/4″ (311.1mm)	NW6R1214S3	3 1/2″ NW6R	43	19.5
14 3/4″ (374.7mm)	NW6R1434S3	4 1/2″ NW6R	48	21.8
17 1/2″ (444.5mm)	NW6R1712S3	4 1/2″ NW6R	75	34
Connector Only
3 1/2″ Reg. Pin	NW3-312RP	3 1/2″ NW6R	15	6.8
4 1/2″ Reg. Pin	NW3-412RP	3 1/2″ NW6R	22	10
6 5/8″ Reg. Pin	NW3-658RP	3 1/2″ NW6R	55	24.9
MJR Box	NW3-MJRB	3 1/2 NW6R	12	5.4
MR Box	NW3-MRB	3 1/2 NW6R	15	6.8
2 3/8″ IF Box	NW3-238IFB	3 1/2″ NW6R	20	9.1
2 7/8″ IF Box	NW3-278IFB	3 1/2″ NW6R	22	10
3 1/2″ Reg. Pin	NW4-312RP	4 1/2″ NW6R	20	9.1
4 1/2″ Reg. Pin	NW4-412RP	4 1/2″ NW6R	22	10
6 5/8″ Reg Pin	NW4-658RP	4 1/2″ NW6R	55	24.9