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8740 Rod Bolts 2022-02-22T06:54:27
PARMANU DHATU NIGAM

8740 Rod Bolts

8740 Chrome Moly Screws and Fasteners manufacturer in India

8740 Rod Bolts is a nickel-chromium-molybdenum low-alloy steel which has good strength and good hardenability and toughness properties. It can be used in applications where toughness, strength, and wear resistance are of most essential. It is extensively used as high-strength forged fasteners. It is often found in aerospace applications for aerospace engine parts, aerospace fasteners and aerospace subassemblies. 8740 Chrome Moly Bolts can be forged at a starting temperature of around 2200ºF and can be forged down to roughly 1700ºF. After forging it is best slow cooled, but it can also be shifted to a furnace held at a temperature approximating the temperature of forging finishing and then soaked and air cooled. 8740 steel bolts can be austenitized at around 1525 – 1575ºF and oil or water quenched depending upon section size and complexity. 8740 bolts can be readily machined following suitable heat treatment. And can be welded by normal fusion methods, but prior to tempering and hardening. Pre heat and post heat are suggested.

8740 Rod Bolts

8740 Rod Bolts

8740 Steel Screws

8740 Steel Screws

8740 Chrome Moly Bolts

8740 Chrome Moly Bolts

Specification

Bolt material

socket
 size

under
 head
 length

thread
 size

torque

8740

7/16"

1.500"

3/8"

40 ftlbs

8740

7/16"

1.600"

7/16"

63 ftlbs

8740

7/16"

1.750"

7/16"

63 ftlbs

8740

7/16"

1.800"

7/16"

63 ftlbs

2000

3/8"

1.500"

5/16"

28 ftlbs

2000

7/16"

1.500"

3/8"

43 ftlbs

2000

7/16"

1.600"

7/16"

75 ftlbs

2000

7/16"

1.800"

7/16"

75 ftlbs

L-19

1/2"

1.600"

7/16"

79 ftlbs

L-19

1/2"

1.750"

7/16"

79 ftlbs

CA 625+

3/8"

1.500"

5/16"

32 ftlbs

Technical details

Composition

ARP 2000

Bolt Yield strength

200,000 PSI

Tensile strength of Bolt 

220,000 PSI

Part Number

BE Rod Bolts (BE-CRB50-S65)

Bolt Torque specification

50 Ft/Lbs, or 0.0065-0.0070 inch stretch

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