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Monday, December 14, 2009

Table : List of Bolting Specifications

Applicable ASTM Specifications (Notes 15)

Spec. No.
Grade
Notes
High Strength

( Note (2))
A193
B7
A193
B16
A320
L7
(10)
A320
L7A
(10)
A320
L7B
(10)
A320
L7C
(10)
A320
L43
(10)
A354
BC
A354
BD
A540
B21
A540
B22
A540
B23
A540
B24
Intermediate Strength

( Note (3))

A193
B5
A193
B6
A193
B6X
A193
B7M
A193
B8 CI.2
(11)
A193
B8C CI.2
(11)
A193
B8M CI.2
(11)
A193
B8T CI.2
(11)
A320
B8 CI.2
(11)
A320
B8C CI.2
(11)
A320
B8F CI.2
(11)
A320
B8M CI.2
(11)
A320
B8T CI.2
(11)
A449
(13)
A453
651
(14)
A453
660
(14)
Low Strength

( Note (4))
A193
B8 CI.1
(6)
A193
B8C CI.1
(6)
A193
B8M CI.1
(6)
A193
B8T CI.1
(6)
A193
B8A
(6)
A193
B8CA
(6)
A193
B8MA
(6)
A193
B8TA
(6)
A307
B
(12)
A320
B8 CI.1
(6)
A320
B8C CI.1
(6)
A320
B8M CI.1
(6)
A320
B8T CI.1
(6)
Nickel And Special Alloy

(Note (5))
B164
(7)(8)(9)
B166
(7)(8)(9)
B335
N10665
(7)
B408
(7)(8)(9)
B473
(7)
B574
N10276
(7)
GENERAL NOTE: Bolting material shall not be used beyond temperature limits specified in the governing code.

NOTES:
(1) Repair welding of bolting material is prohibited.
(2) These bolting materials may be used with all listed materials and gaskets.
(3) These bolting materials may be used with all listed materials and gaskets, provided it has been verified that a sealed joint can be maintained under rated working pressure and temperature.
(4) These bolting materials may be used with all listed materials but are limited to Classes 150 and 300 joints. See for required gasket practices.
(5) These materials may be used as bolting with comparable nickel and special alloy parts.
(6) This austenitic stainless material has been carbide solution treated but not strain hardened. Use A 194 nuts of corresponding material.
(7) Nuts may be machined from the same material or may be of a compatible grade of ASTM A 194.
(8) Maximum operating temperature is arbitrarily set at 5OO”F, unless material has been annealed, solution annealed or hot finished because hard temper adversely affects design stress in the creep rupture range.
(9) Forging quality not permitted unless the producer last heating or working these parts tests them as required for other permitted conditions in the same specification and certifies their final tensile, yield, and elongation properties to equal or exceed the requirements for one of the other permitted conditions.
(10) This ferritic material is intended for low temperature service. Use A 194 Grade 4 or Grade 7 nuts.
(11) This austenitic stainless material has been carbide solution treated and strain hardened. Use A 194 nuts of corresponding material.
(12) This carbon steel fastener shall not be used above 400°F or below -20°F. See also Note (4). Bolts with drilled or undersized heads shall not be used.
(13) Acceptable nuts for use with quenched and tempered bolts are A 194 Grades 2 and 2H. Mechanical property requirements for studs shall be the same as those for bolts.
(14) This special alloy is intended for high temperature service with austenitic stainless steel.
(15) ASME Boiler and Pressure Vessel Code, Section II materials, which also meet the requirements of the listed ASTM specifications, may also be used.
The 2009 Report on Aircraft and Aerospace Bolts of at Least 161 KSI Tensile Which Meet Specifications for Flying Vehicles Excluding Plastics: World Market Segmentation by City

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