FASTENER GRADE, MATERIAL & SPECIFICATIONS

 

GRADE ID MARKASTM SPEC NUMBERFASTENER DESCRIPTIONMATERIALNOMINAL SIZE RANGE (INCH)MECHANICAL
PROPERTIES
BOLTS, SCREWS, STUDSNUTSHARDNESS
YIELD STRENGTH
(MIN PSI)
TENSILE STRENGTH (MIN PSI)PROOF LOAD (PSI)BRINELL
B5A193Bolts, screws, and studs for
high temperature service
AISI 5011/4/200480,000100,000
B6A193Bolts,
screws, and studs for high temperature service
AIS I41085,000110,000
B7A193Bolts, screws, and studs for high temperature
service
AISI 4140, 4142, 4145,
4140H, 4142H, 4145H
1/4 – 2-1/2105,000125,000
Over 2-1/2 – 495,000115,000
Over75,000100,000
B16A193Bolts, screws, and studs for high temperature
service
Chromium, molybdenum and
vanadium alloy steel
1/4 – 2-1/2105,000125,000
Over 2-1/2 – 495,000110,000
Over 4-785,000100,000
B8A193 A320Bolts, screws, and
studs for high or low temperature service,
respectively—Class 1
AISI 304, carbide
solution treated
1/4 and larger30,00075,000223 max
B8CA193
A320
Bolts, screws, and
studs for high or low temperature service,
respectively—Class 1
AISI 347, carbide
solution treated
1/4 and larger30,00075,000223 max
B8MA193
A320
Bolts, screws, and
studs for high or low temperature service,
respectively—Class 1
AISI 347, carbide
solution treated
1/4 and larger30,00075,000223 max
B8PA193Bolts, screws, and studs
for high or low temperature service,
respectively—Class 1
ISI 305 [with
restricted carbon], carbide solution treated
1/4 and larger3000075,000223 max
OPTIONALF593
GROUP 1
Stainless steel bolts, hex capscrews and studs
[properties for cold worked]
304, 305, 384, *303, XM7 [CW]1/4 – 5/8
INCL.
65000100000B95 – C32
3/4 – 1-1/2
INCL.
45,00085,000B8O – C32
316F593
GROUP 2
Stainless steel
bolts, hex capscrews and studs [properties for cold
worked]
316 [CW]1/4 –
5/8 INCL.
65000100000B95 – C32
3/4 – 1-1/2 INCL.45,00085,000B8O – C31
B8TA193,

A320

Bolts, screws, and studs for high
or low temperature service respectively — Class 1
AISI 321, carbide solution treated1/4 and
larger
30,00075,000223 max
B8A193,

A320

Bolts, screws, and
studs for high or low temperature service
respectively — Class 2
AISI 304,
carbide solution treated & strain hardened
1/4 – 3/4100,000125,000321 max
Over 3/4 – 180,000115,000321 max
Over 1 – 1-1/465,000105,000321 max
Over 1-1/4 –
1-1/2
50,000100,000321 max
B8CA193,

A320

Bolts, screws, and
studs for high or low temperature service
respectively — Class 2
AISI 347,
carbide solution treated & strain hardened
1/4 – 3/4100,000125,000321 max
Over 3/4 – 180,000115,000321 max
Over 1 – 1-1/465,000105,000321 max
Over
1-1/4 – 1-1/2
50,000100,000321 max
B8PA193,

A320

Bolts, screws, and
studs for high or low temperature service
respectively — Class 2
AISI 305
[witd restricted carbon], carbide solution treated &
strain hardened
1/4 – 3/4100,000125,000321 max
Over 3/4 – 180,000115,000321 max
Over 1 – 1-1/465,000105,000321 max
Over 1-1/4 – 1-1/250,000100,000321 max
B8TA193
A320
Bolts, screws, and studs for high or low temperature
service respectively — Class 2
AISI 321, carbide solution treated & strain hardened1/4 – 3/4100,000125,000321 max
Over 3/4 – 180,000115,000321 max
Over 1 – 1-1/465,000105,000321 max
Over
1-1/4 – 1-1/2
50,000100,000321 max
B8MA193
A320
Bolts, screws, and
studs for high or low temperature service
respectively — Class 2 [C]
AISI
321, carbide solution treated & strain hardened
1/4 – 3/495,000110,000321 max
Over 3/4 – 180,000100,000321 max
Over 1 – 1-1/465,00095,000321 max
Over 1-1/4 –
1-1/2
50,00090,000321 max
1A194Hot or cold forged nuts for
high pressure & high termperature service.
Carbon steel1/4 and larger130,000121 MIN
120,000
2A194Hot or
cold forged nuts for high pressure & high temperature
service.
Carbon Steel1/4 and larger150,000159/352
135,000
2HA194Hot or cold forged nuts for
high pressure & high temperature service.
Carbon steel, heat treated1/4
and larger
175,000248/352
150,000
3A194Hot or cold forged nuts for
high pressure & high temperature service.
AISI 501, heat treated1/4 and
larger
175,000248/342
150,000
4A194Hot or cold forged nuts for
high pressure & high temperature service.
Carbon molybdenum, heat treated1/4 and larger175,000248/352
150,000
6A194Hot or cold forged nuts for
high pressure & high temperature service.
AIS I410, heat treated1/4 and
larger
150,000228/271
135,000
7A194Hot or cold forged nuts for
high pressure & high temperature service.
AIS I4140/4142/4145,4140H, 4142H, 4145H, heat
treated
1/4 and larger175,000248/352
150,000
8A194Hot or
cold forged nuts for high pressure & high temperature
service.
AISI 3041/4 and larger80,000126/300
75,000
OPTIONALF594 GROUP 1Stainless steel nuts [properties for cold worked]304, 305, 384, *303, XM7 [CW]1/4 – 5/8100,000B95-C32
3/4 -1-1/285,000B80-C32
316F594
GROUP 2
Stainless steel
nuts [properties for cold worked]
316 [CW]1-4 – 5/8100,000B95-C32
3/4 – 1-1/285,000B80-C32
8BA194Nuts
machined from bars for high pressure & high
temperature service.
AISI 3041/4 and larger80000126/300
75000
8CA194Hot or cold forged nuts for
high pressure & high temperature service.
AISI 3471/4 and larger80000126/300
75000
8CBA194Nuts
machined from bars for high pressure & high
temperatureservice.
AISI 3471/4 and larger80000126/300
75000
8MA194Hot or cold forged nuts for
high pressure & high temperature service.
AISI 3161/4 and larger80000126/300
75000
8MBA194Nuts
machined from bars for high pressure & high temperature
service.
AISI 3161/4 and larger80000126/300
75000
8TA194Hot or cold forged nuts for
high pressure & high temperature service.
AISI 3211/4 and larger80000126/300
75000
8TBA194Nuts
machined from bars for high pressure & high temperature
service.
AISI 3211/4 and larger80000126/300
75000
8PA194Hot or cold forged nuts for
high pressure & high temperature service.
AISI 305 [with restricted carbon]1/4 and larger80000126/300
75000
8PBA194Nuts machined from bars for
high pressure & high temperature service.
AISI 305 [with restricted carbon]1/4 and larger80000126/300
75000
8A194Nuts machined from bars for
high pressure & high temperature service.
AISI 304, strain hardened1/4 –
3/4
125,000
110,000
7/8 – 1115,000
100,000
1-1/8 – 1-1/4105,000
95,000
1-3/8 – 1-1/2100,000
90,000
8CA194Nuts machined from bars for
high pressure & high temperature service.
AISI 347, strain hardened1/4 –
3/4
125,000
110,000
7/8 – 1115,000
100,000
1-1/8 –
1-1/4
105,000
95,000
1-3/8 –
1-1/2
100,000
90,000
8TA194Nuts machined from bars for
high pressure & high temperature service.
AISI 321, strain hardened1/4 –
3/4
125,000
110,000
7/8 – 1115,000
100,000
1-1/8 – 1-1/4105,000
95,000
1-3/8 – 1-1/2100,000
90,000
8MA194Nuts machined from bars for
high pressure & high temperature service.
AIS 316, strain hardened1/4 –
3/4
110,000
100,000
7/8 – 1100,000
90,000
1-1/8 –
1-1/4
95,000
85,000
1-3/8 – 1-1/290,000
8FA194Nuts machined from bars for
high pressure & high temperature service.
AISI 4140, 4142 or 4145, quenched & tempered1/4 – 3/4125,000
110,000
7/8 – 1115,000
100,000
1-1/8 – 1-1/4105,000
95,000
1-3/8 – 1-1/2100,000
90,000
8PA194Nuts machined from bars for
high pressure & high temperature service.
AISI 305 [with restricted carbon], strain hardened1/4 – 3/4125,000
110,000
7/8 – 1115,000
100,000
1-1/8 –
1-1/4
105,000
95,000
1-3/8 –
1-1/2
100,000
90,000
L7A320Bolts,
screws, and studs for low termperature service
AISI 321, strain hardened1/4 – 2-1/2105125