1/4"-28 Nitronic 60 Locking Helical Inserts(3 Products)
HELICOIL

Insert Length	Free Coil Dia.	Finish	Thread Type	Drill Size	Thread Direction	Hardness	Tensile Strength	Pkg. Qty	Price
1/2"	0.316"	Plain	Fine	G	Right Hand	Rockwell C43-C50	200000 psi	100	£279.34
Locking Insert, 1/4 In - 28 Thread Size, Nitronic, 1/2 In Insert Lg., 100PK Model No. A3591-4EN500 SKU CH3XBX Cross Ref. 4GDP6 Price£294.04 /unit Product Detail
1/4"	0.316"	Plain	Fine	G	Right Hand	Rockwell C43-C50	200000 psi	100	£236.82
Locking Insert, 1/4 In - 28 Thread Size, Nitronic, 1/4 In Insert Lg., 100PK Model No. A3591-4EN250 SKU CH3XBV Cross Ref. 4GDP4 Price£249.29 /unit Product Detail
3/8"	0.316"	Plain	Fine	G	Right Hand	Rockwell C43-C50	200000 psi	100	£271.81
Locking Insert, 1/4 In - 28 Thread Size, Nitronic, 3/8 In Insert Lg., 100PK Model No. A3591-4EN375 SKU CH3XBW Cross Ref. 4GDP5 Price£286.12 /unit Product Detail