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MIL-DTL-1222 Studs, Bolts, Screws And Nuts For Applications Where A High Degree Of Reliability Is Required; General Specification ForThis specification covers standard studs, hex cap screws, and heavy hex bolts in nominal standard diameters of 1/4 inch to 4 inches, nuts in nominal standard diameters of 1/4 inch to 3 inches, and socket head cap screws in nominal standard diameters of 1/4 inch to 1 1/2 inches for submarine safety and other applications where a high degree of reliability is required \(see 6.1\).

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MIL-DTL-1222J
Cross reference of material grades.
TABLE XVI.
1
MIL-DTL-1222J
MIL-S-1222H
MIL-S-001222G
Amendment
3
Grade and Condition
1,2
and MIL-B-857
3
2
1
Base
4
2
2
2
2H
2H
2H
4
4
4
4340
4340
4
5
5
5
7
7
4
8
8
8
A574
A574
B7
B7
B7
5
B16
B16
B16, B14
6
Not Covered
L7
6
Not Covered
L43
4
304-A
303-A
303 -A
4
304-CW
303-CW
303­CW
303 -SH
7
Not Covered
303-SH
304-A
303Se-A
304-CW
303Se-CW
303Se­CW
7
Not Covered
303-SH
304-A
304-A
304-A
304-CW
304-CW
304­CW
304-SH
7
Not Covered
304-SH
4
305-A
305-A
305 -A
4
305-CW
305-CW
305-CW
305 -SH
7
Not Covered
305-SH
4
316-A
316-A
316 -A
4
316-CW
316-CW
316-CW
316 -SH
7
Not Covered
316-SH
321-A
321-A
321-A
321-CW
321-CW
321-CW
321-SH
7
Not Covered
321-SH
347-A
347-A
347-A
347-CW
347-CW
347-CW
347-SH
7
Not Covered
347-SH
384-A
384-A
384-A
384-CW
384-CW
384-CW
384-SH
7
Not Covered
384-SH
8
410-T
410-T
410-H
410-T
8
410-H
410-H
410-HT
410-H
8
416-T
416-T
416-H
416-T
8
416-H
416-H
416-HT
416-H
1 The following abbreviations are used for MIL-S-1222 revisions G and H:
A ­ Annealed;  CW - Cold Worked;  SH - Strain Hardened;  AH - Annealed
and Age Hardened
2 Those grades cited in MIL-B-857 have been identified by a footnote.
3 The alloy grade and condition listed in MIL-DTL-1222J.
4 This designation is also used in MIL-B-857.
5 Use Grade B16 to replace Grade B14 in MIL-S-1222F
6 Use MIL-S-1222.
7 Use amendment 2 to MIL-S-1222H
8 CAUTION:  Condition H of MIL-S-1222H and amendment 1 to MIL-S-1222H have
a higher strength than condition H of MIL-S-1222G and amendments 2 and 3
to MIL-S-1222H and have the same marking.
45



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