Penn Stainless Products Header

Square and Rectangular Bar Specifications and Information


Stainless Hot Finished Square Bar Specifications
T304/304L A276, A479, QQ-S-763, SAE AMS5639, SAE AMS5647,
SA479
T316/316L A276, A479, QQ-S-763, SAE AMS5648, SAE AMS5653,
MIL-S7720, SA479

HF Tolerances
HF Tolerances Plus Minus Out of Sq
Over 7/8" to 1" (inclusive)  0.009 0.009 0.013
Over 1" to 1-1/8" (inclusive) 0.010 0.010 0.015
Over 1-1/8" to 1-1/4" (inclusive) 0.011 0.011 0.016
Over 1-1/4" to 1-3/8" (inclusive)  0.012 0.012 0.018
Over 1-3/8" to 1-1/2" (inclusive) 0.014 0.014 0.021
Over 1-1/2" to 2" (inclusive)   1/64 1/64 0.023

Straightness Tolerance for Machined Straightened Bars
HF: 1/8 inch in any 5 foot; but may not exceed 1/8 X (length in ft/5)


Stainless Cold Finished Square Bar Specifications
T303 A582, QQ-S-764, SAE AMS5640, MIL-S7720
T304/304L A276, A479, QQ-S-763, SAE AMS5639, SAE AMS5647,
SA479
T316/316L A276, A479, QQ-S-763, SAE AMS5648, SAE AMS5653,
MIL-S7720, SA479

CF Tolerances
CF Tolerances Plus Minus
1/8" to 5/16" (exclusive) 0.000 0.002
5/16" to 1/2" (exclusive) 0.000 0.003
1/2" to 1" (inclusive) 0.000 0.004
over 1" to 2" (inclusive) 0.000 0.006
over 2" to 3" (inclusive) 0.000 0.008

Straightness Tolerance for Machined Straightened Bars
C F: 1/16 inch in any 5 foot; but may not exceed 1/16 X (length in ft/5)
Last Updated: