QQ-N-286 Nickel-Copper-Aluminum Alloy, Wrought Uns N05500This specification covers all nickel-copper-aluminum alloy wrought forms formerly classified as class A. This alloy is designated under the Unified Numbering System for Metals and Alloys as UNS N05500. Except for cases where nonmagnetic properties are paramount, this alloy is intended to be age hardened prior to placing the material in service.

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TABLE X. Permissible variations in straightness of rod and bar.1/

QQ-N-286G

Ordered condition, finish, and size

Permissible deviations in straightness (inches)

Hot finished: 2/

Bar and rod (hot finished surface)

Depth of chord 3/

0.050 per foot of length

Rounds:

Rough turned or rough ground

Semismooth machined

Smooth finished machined

Throw in one revolution 4/

0.050 per foot of length

0.0031 per foot of length

0.0015 per foot of length

Cold drawn:

Rounds (diameter):

Up to 4 inches, incl

Depth of chord 3/

0.030 per foot of length

Hexagons and squares: All sizes

Depth of chord 3/

0.030 per foot of length

1/ Not applicable to forging quality rod.

2/ Except forging quality stock.

3/ The maximum curvature (depth of chord) shall not exceed the value indicated multiplied by length in feet.

4/ The throw in one revolution in any 20 feet maximum length shall not exceed the values indicated multiplied by length in feet.

TABLE XI. Permissible variations in straightness of precision straightened cold drawn shafting.

Ordered diameter of shafting, (inches)	Standard distance between supports, (inches)	Permissible variations throw in one revolution from straightness, (inches)
� to 15/16, incl	42	0.005
Over 15/16 to 115/16, incl	42	0.006
Over 115/16 to 2�, incl	42	0.007
Over 2� to 4 incl	42	0.008
� to 15/16, incl	Specified lengths of 3 to 10 feet	0.004 plus 0.0025 for each foot, or fraction thereof, in excess of 3 feet.
Over 15/16 to 4 incl	Specified lengths of 20 feet and less	0.005 plus 0.0015 for each foot, or fraction thereof, in excess of 3 feet.

3.9.2 Forged parts dimensions. All forgings shall conform to the sizes and shapes as specified (see 6.2). The responsibility of furnishing forgings that can be laid out and machined to the finished dimensions within the specified tolerances as shown on the drawings, and that will conform to such gauges as may be specified in the individual cases, shall rest with the contractor.