TABLE I.
Commercial specification, grade, material symbol and additional requirements to certify items
meeting commercial standards to this specification. - Continued
Notes: - Continued
1 The commercial fastener specification and any mandatory supplementary requirements.
2 The material alloy, grade, type, or group is cited as it is used in the commercial fastener
standard. When a separate material specification is cited in the material column, the rod, bar or
wire used to make the fasteners shall meet all of the requirements of the specification cited.
3 The fastener condition is cited as it is used in the commercial fastener specification.
4 Those requirements in paragraphs 3.2, 3.4, 3.5, 3.6, 3.7,and 3.8 that specifically apply to the
specified fastener grade are cited. Paragraph 3.4 is only cited when the mechanical property
requirements listed in table II, table III, or table IV are different than the property
requirements in the applicable commercial specifications.
5 The material symbol is different than the symbol used in the commercial specification.
6 Any grade in group one, except 303, 303Se, or XM-1, may be supplied provided the fasteners are
marked with the material symbol for the grade supplied. When approved, see 6.2, group 2 may be
furnished for group 1. Only one grade may be furnished with each order.
7 Any grade in group two may be supplied provided the fasteners are marked with the material symbol
for the grade supplied. Only one grade may be furnished with each order.
8 Any grade in group three may be supplied provided the fasteners are marked with the material symbol
for the grade supplied. Only one grade may be furnished with each order.
9 When approved, see 6.2, group 6 may be furnished for gropup 5. When approved, see 6.2, Grade 410
may be furnished for grade 416 or 416Se, 416 may be furnished for grade 410 or 416Se, 416Se may be
furnished for grade 410 or 416, or 431 may be furnished for 410, 416, or 416Se. Only one grade may
be furnished with each order.
10 The commercial specifications do not have material symbols.
11 When approved, see 6.2, grade 462 may be furnished for grade 464 or 482, 464 may be furnished for
grade 462 or 482, and 482 may be furnished for grade 462 or 464. Only one grade may be furnished
with each order.
12 When approved, see 6.2, grade 510 may be furnished for grade 544 or grade 544 may be furnished for
grade 510. Only one grade may be furnished with each order.
13 The temper of the rod or bar used to make the fasteners may be M20, or any other suitable temper.
14 When approved, see 6.2, grade 655 may be furnished for grade 661 and grade 661 may be furnished for
grade 655. Only one grade may be furnished with each order.
15 When approved, see 6.2, grade 670 may be furnished for grade 675 and grade 675 may be furnished for
grade 670. Only one grade may be furnished with each order.
16 The temper of the rod or bar used to make the fasteners may be M20, or any other suitable temper,
if the fasteners are heat treated in accordance with ASTM B 150, Temper TQ30.
17 Grade 400 nuts may be furnished for grade 405 nuts and 405 nuts may be furnished for grade 400
nuts. Only one grade may be furnished with each order.
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