BOLTING MATERIAL
Non-Ferrous
Ni-Cu Al Alloy (K-monel)
QQ-N-286
Fabricated to the
requirements of Screw
Thread Standards for
Ni-Cu
QQ-N-281
Federal Services Handbook
H-28 and MS18116
NOTE: There should be a minimum of 5 Rockwell C hardness between the nuts
and bolts to prevent galling.
Ferrous
High Strength Bolts
ASTM-A-325
Bolts should not be
galvanized at hardness
above 32. RC for
marine environment
Quenched and tempered
alloy steel bolts
ASTM-A-490
Hardened washers
ASTM-F-436
Heavy hex nuts
ASTM-A-563
ANSI/ASTM-F-606 Standard Method for Conducting Tests to Determine the
Mechanical Properties of Externally and Internally Threaded Fasteners,
Washers and Rivets shall be used.
PIPING, ELECTRICAL AND LIFE SUPPORT SYSTEMS
MATERIALS AND COMPONENTS
Stainless Steel
Pipe
ASTM A-312
Alloys Grs: TP 310 & 316
Forgings
ASTM A-336
Flanges & Fittings
ASTM A-350
Castings
ASTM A-352
Ni-Cu (Monel)
Cast
QQ-N-288
Wrought
QQ-N-281
Tubing
MIL-T-1368 Class A, ASTM
B-466 Alloy 720
70/30 Cu-Ni
Cast
MIL-C-20159
Wrought
ASTM B-402,
Alloy
715
Tubing
MIL-T-16420
ASTM B-466,
Alloy
715
Valve Bronze
MIL-B-16541
ASTM B-62
ASTM B-61
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