TM 1-1500-204-23-6
Table 2-1. Bolt and Screw Markings - CONT
Classification or
Marking
Material
Physical characteristics
specification
Steel, corrosion-
TS: 105,000 psi min over
resistant (18Cr, 8NI,
1-inch and up to 1-1/4
columbium
inch dia inclusive
stabilized)
TS: 100,000 psi min over
1-1/4 inch and up to
1-1/2 inch dia inclusive
Steel, corrosion-
Carbide solution treated
resistant (18Cr, 8Ni,
and strain hardened
AISI 321, grade B8T
titanium stabilized)
TS: 125,000 psi min up to
ASTM A320
3/4-inch dia inclusive
TS: 115,000 psi min over
3/4-inch and up to
1-inch dia inclusive
TS: 105,000 psi min over
1-inch and up to 1-1/4
inch dia inclusive
TS: 100,000 psi min over
1-1/4 inch and up to
1-1/2 inch dia inclusive
Steel, corrosion-
Carbide solution treated
resistant (18Cr, 8NI,
TS 75,000 psi min all dia
AISI 303, grade B8F
free machining)
ASTM A193
Carbide solution treated
in the finish condition
TS: 75,000 psi min all dia
AISI 1303, grade B8F
ASTM A320
TS: 115,000 psi min over
3/4-inch and up to
1-inch dia inclusive
TS: 105,000 psi min over
1-inch and up to 1-1 /4
inch dia inclusive
TS 100,000 psi min over
1-1 /4 inch and up to
1-1/2 inch dia inclusive
2-12
