TM 1-1500-204-23-6
Table 2-1. Bolt and Screw Markings - CONT
Classification or
Marking
Material
Physical characteristics
specification
Steel, corrosion
Machined from strain
resistant
hardened stock
(16Cr, 18Ni)
Condition SH
TS: 120,000 psi min
1/4 to 5/8 inch dia
inclusive
RH C24-36
TS: 110,000 psi min
3/4 to 1 inch dia
inclusive
RH: C20-32
TS: 100,000 psi min
1-1/8 to 1-1/4 inch dia
inclusive
RH B95-C30
TS: 95,000 psi min
1-3/8 to 1-1/2 inch dia
inclusive
RH B90-C28
Steel, corrosion-
Carbide solution treated
AISI 321, Grade B8T
resistant (18Cr, 8Ni,
TS: 75,000 psi min all dia
ASTM A193
columblum
stabilized)
Carbide solution treated
in the finish condition
AISI 321, grade B8T
TS: 75,000 psi min all dia
ASTM A320
Cold Drawn
TS: 125,000 psi min up to
AISI 321, grade B8T
3/4-inch dia inclusive
(A320
TS: 115,000 psi min over
3/4-inch and up to 1-inch dia
inclusive
2-11
