FASTENERS Stainless, Brass & Nylon Inch 8
REFERENCE CHART — STAINLESS STEEL INFORMATION
AUSTENITIC - Refers to 300 series stainless, the most popular of the stainless alloys accounting for 85% - 90% of stainless fasteners sold. Named for Sir Robert Williams Austen, an English metallurgist, austenitic stainless is a crystal structure formed by heating steel, chromium, and nickel to a high temperature where it forms the characteristics of 300 series stainless steel. An “ AUSTENITE ” is a molecular structure where 8 atoms of iron surround one atom of carbon, thus limiting the corrosive effects of the carbon. Austenitic fasteners have the highest level of corrosion resistance in the stainless family, cannot be hardened by heat treatment, and are non-magnetic for practical purposes. The most popular of austenitic grades is known generically as “ 18-8 ” stainless and includes grades 302, 302HQ, 303, 304, 305, and XM-7. Typical industries using 18-8 fasteners include: food, dairy, wine, chemical, pulp and paper, pharmaceutical, boating, swimming pool, pollution control, electronic, medical and hospital equipment, computer and textile. Type 316 stainless has added nickel and molybdenum. The molybdenum (called moly) sharply increases corrosion resistance to chlorides and sulfates, including various sulfurous acids in the pulp industry. It has superior tensile strength at high temperatures compared to 18-8. Besides pulp and paper, typical industries using 316 are: photographic and other chemical, ink, textile, bleach, and rubber. A2 is the metric designation for a stainless steel comparable to 18-8. A4 is the metric equivalent to 316. Stainless Steel *All hex cap may have an additional 1/4” to 3/8” thread, particularly on short length up to 1-1/2” and long lengths over 4”
1
SCREWS — HEX HEAD CAP 18-8 STAINLESS STEEL
H
T
Material:
18-8 Stainless Steel
ANSI B18.2.1 1981
D
G
18-8
Plating:
None
L
F
1/4” .156 .438 .505
5/16”
3/8” .234 .563 .650
7/16”
1/2” .313 .750 .866
9/16”
5/8” .391 .938 1.083
3/4” .469 1.125 1.299
7/8” .547 1.313 1.516
1”
1-1/8” .688 1.688 1.949
1-1/4” .781 1.875 2.165
1-1/2”
Diameter
D H
Height W.A.F. W.A.C.
.203 .500 .577
.281 .625 .722
.359 .813 .938
.609 1.500 1.732
.938
F
2.250 2.598
G
D L 1/4 3/8 1/4 1/2 1/4 5/8 1/4 3/4 1/4 7/8 1/4 1
T UNC
UNF
D L 3/8 8 3/8 9 3/8 10 7/16 3/4 7/16 1
T UNC
UNF
D L 5/8 10 3/4 1
T UNC
UNF
A78.14.38 A78.14.12 A78.14.58 A78.14.34 A78.14.78 A78.14.1 A78.14.114 A78.14.112 A78.14.134 A78.14.214 A78.14.212 A78.14.234 A78.14.314 A78.14.312 A78.14.334 A78.14.2 A78.14.3
A78.38.8 A78.38.9 A78.38.10 A78.716.34 A78.716.1
A78.58.10 A78.34.1 A78.34.114 A78.34.112 A78.34.134 A78.34.214 A78.34.212 A78.34.234 A78.34.2 A78.34.314 A78.34.312 A78.34.334 A78.34.3
3/8 1/2 5/8 3/4 3/4 3/4
1-1/4 1-1/4 1-1/4
1-3/4
A69.14.12 A69.14.58 A69.14.34
1
3/4 1-1/4 1-1/4 3/4 1-1/2 1-1/2 3/4 1-3/4 1-3/4
3/4
A69.34.134
1
A69.14.1
A78.716.114 A69.716.114 A78.716.112 A69.716.112 A78.716.134 A69.716.134
A69.34.2
7/16 1-1/4 1-1/8 7/16 1-1/2 1-1/8 7/16 1-3/4 1-1/8
3/4 2
1-3/4
A69.14.114 A69.14.112 A69.14.134 A69.14.214 A69.14.212 A69.14.2
1/4 1-1/4 3/4 1/4 1-1/2 3/4 1/4 1-3/4 3/4
3/4 2-1/4 1-3/4 3/4 2-1/2 1-3/4 3/4 2-3/4 1-3/4
A69.34.212
A78.716.2
A69.716.2
7/16 2
1-1/8
A78.716.214
1/4 2
3/4
7/16 2-1/4 1-1/8 7/16 2-1/2 1-1/8 7/16 2-3/4 1-1/8
3/4 3
1-3/4
A78.716.212 A69.716.212
1/4 2-1/4 s3/4 1/4 2-1/2 3/4 1/4 2-3/4 3/4
3/4 3-1/4 1-3/4 3/4 3-1/2 1-3/4 3/4 3-3/4 1-3/4
A78.716.234
A78.716.3
A69.716.3
7/16 3
1-1/8
A69.14.3
A78.716.312
A78.34.4
1/4 3
3/4
7/16 3-1/2 1-1/8
3/4 4
1-3/4
A78.716.4
A78.34.412
1/4 3-1/4 3/4 1/4 3-1/2 3/4 1/4 3-3/4 3/4
7/16 4
1-1/8
3/4 4-1/2 1-3/4
A69.14.312
A78.716.412
A78.34.5
7/16 4-1/2 1-1/8
3/4 5
1-3/4
A78.716.5
A78.34.512
7/16 5
1-1/8
3/4 5-1/2 1-3/4
A78.14.4
A78.716.512 A78.12.34 A78.12.78 A78.12.1 A78.12.114 A78.12.112 A78.12.134 A78.12.214 A78.12.212 A78.12.2
A78.34.6
1/4 4
3/4
7/16 5-1/2 1-1/8
3/4 6
1-3/4
A78.14.412
A78.34.612 A78.34.7.0 A78.34.712 A78.34.8 A78.34.9 A78.78.112 A78.78.134 A78.78.214 A78.78.212 A78.78.234 A78.78.314 A78.78.312 A78.78.334 A78.78.2 A78.78.3
1/4 4-1/2 3/4
1/2 3/4 1/2 7/8 1/2 1
3/4 7/8
3/4 6-1/2 2
A78.14.5
1/4 5
3/4
3/4 7
2
A78.14.512
A69.12.1
1/4 5-1/2 3/4
1
3/4 7-1/2 2
A78.14.6
A69.12.114 A69.12.112 A69.12.134
1/4 6 5/16 1/2 5/16 5/8 5/16 3/4 5/16 7/8 5/16 1
3/4 1/2 5/8 3/4 7/8 7/8
1/2 1-1/4 1-1/4 1/2 1-1/2 1-1/4 1/2 1-3/4 1-1/4
3/4 8 3/4 9
2 2
A78.516.12 A78.516.58 A78.516.34 A78.516.78 A78.516.1
A69.516.12
7/8 1-1/2 1-1/2 7/8 1-3/4 1-3/4
A69.516.34
A69.12.2
1/2 2
1-1/4
1/2 2-1/4 1-1/4 1/2 2-1/2 1-1/4
7/8 2
2
A69.516.1
A69.12.212
7/8 2-1/4 2 7/8 2-1/2 2 7/8 2-3/4 2
A78.516.114 A69.516.114 A78.516.112 A69.516.112 A78.516.134 A69.516.134
A78.12.3
A69.12.3
5/16 1-1/4 7/8 5/16 1-1/2 7/8 5/16 1-3/4 7/8
1/2 3
1-1/4
A78.12.314 A78.12.312
1/2 3-1/4 1-1/4 1/2 3-1/2 1-1/4
A69.12.312
7/8 3
2
A78.516.2
A69.516.2
A78.12.4
A69.12.4
7/8 3-1/4 2 7/8 3-1/2 2 7/8 3-3/4 2
5/16 2
7/8
1/2 4
1-1/4
A78.516.214
A78.12.412
5/16 2-1/4 7/8 5/16 2-1/2 7/8 5/16 2-3/4 7/8
1/2 4-1/2 1-1/4
A78.516.212 A69.516.212
A78.12.5
1/2 5
1-1/4
A78.516.234
A78.12.512
A78.78.4
1/2 5-1/2 1-1/4
7/8 4
2
A78.516.3
A69.516.3
A78.12.6
A78.78.412
5/16 3
7/8
1/2 6
1-1/4
7/8 4-1/2 2
A78.516.314 A78.516.312 A78.516.334 A78.516.412 A78.516.5 A78.516.512 A78.516.4 A78.516.6 A78.38.12 A78.38.58 A78.38.34 A78.38.78 A78.38.1 A78.38.114 A78.38.112 A78.38.134 A78.38.214 A78.38.212 A78.38.234 A78.38.314 A78.38.312 A78.38.334 A78.38.3 A78.38.2
A78.12.612 A78.12.7.0 A78.12.712 A78.12.8 A78.12.9 A78.12.11 A78.916.112 A78.916.2 A78.916.212 A78.916.3 A78.58.1 A78.58.114 A78.58.112 A78.58.134 A78.58.214 A78.58.212 A78.58.234 A78.58.314 A78.58.312 A78.58.334 A78.58.3 A78.58.2
A78.78.5
5/16 3-1/4 7/8 5/16 3-1/2 7/8 5/16 3-3/4 7/8
1/2 6-1/2 1-1/2
7/8 5
2
A78.78.512 A78.78.6 A78.1.2 A78.1.212 A78.1.234
1/2 7
1-1/2
7/8 5-1/2 2
1/2 7-1/2 1-1/2
7/8 6
2 2
5/16 4
7/8
1/2 8 1/2 9 1/2 11
1-1/2 1-1/2 1-1/2
1 1 1 1 1 1 1 1 1 1 1 1 1
2
5/16 4-1/2 7/8
2-1/2 2-1/4 2-3/4 2-1/4
5/16 5
7/8
A78.1.3
5/16 5-1/2 7/8
9/16 1-1/2 1-3/8
3
2-1/4
A69.916.2
A78.1.312 A78.1.334
5/16 6 3/8 1/2 3/8 5/8 3/8 3/4 3/8 7/8 3/8 1
7/8 1/2 5/8 3/4 7/8
9/16 2
1-3/8
3-1/2 2-1/4 3-3/4 2-1/4
A69.38.12 A69.38.58 A69.38.34
9/16 2-1/2 1-3/8
A69.916.3
A78.1.4
9/16 3 5/8 1
1-3/8
4
2-1/4
A78.1.412
1
4-1/2 2-1/4
A78.1.5
5/8 1-1/4 1-1/4 5/8 1-1/2 1-1/2 5/8 1-3/4 1-1/2
5
2-1/4
A69.38.1
A69.58.112 A69.58.134
A78.1.512 A78.1.6 A78.1.7.0 A78.1.8 A78.118.3
1
5-1/2 2-1/4
A69.38.114 A69.38.112 A69.38.134
3/8 1-1/4 1 3/8 1-1/2 1 3/8 1-3/4 1
6 7 8
2-1/4 2-1/2 2-1/2 2-1/2
A69.58.2
5/8 2
1-1/2
5/8 2-1/4 1-1/2 5/8 2-1/2 1-1/2 5/8 2-3/4 1-1/2
A69.38.2
A69.58.212
3/8 2
1
1-1/8 3
A78.118.312 A78.118.512
3/8 2-1/4 1 3/8 2-1/2 1 3/8 2-3/4 1
1-1/8 3-1/2 2-1/2 1-1/8 5-1/2 2-1/2
A69.38.212
A69.58.3
5/8 3
1-1/2
A78.118.6 A78.114.3 A78.114.4
5/8 3-1/4 1-1/2 5/8 3-1/2 1-1/2 5/8 3-3/4 1-1/2
1-1/8 6 1-1/4 3 1-1/4 4
2-1/2 2-3/4 2-3/4
A69.38.3
3/8 3
1
3/8 3-1/4 1 3/8 3-1/2 1 3/8 3-3/4 1
A78.58.4
A69.58.4
A78.114.412
A69.38.312
5/8 4
1-1/2
1-1/4 4-1/2 2-3/4
A78.58.412
A78.114.5
5/8 4-1/2 1-1/2
1-1/4 5
2-3/4
A78.58.5
A78.114.512
A78.38.4
A69.38.4
5/8 5
1-1/2
1-1/4 5-1/2 2-3/4
3/8 4
1
A78.114.6 A78.112.6
A78.38.412
A78.58.512
1-1/4 6 1-1/2 6
2-3/4 3-1/4
3/8 4-1/2 1
5/8 5-1/2 1-1/2
A78.38.5
A78.58.6
3/8 5
1
5/8 6
1-1/2
A78.38.512
A78.58.612 A78.58.7.0 A78.58.712
3/8 5-1/2 1
5/8 6-1/2 1-3/4
A78.38.6
3/8 6
1
5/8 7
1-3/4
A78.38.612 A78.38.7.0
3/8 6-1/2 1-1/4
5/8 7-1/2 1-3/4
A78.58.8
3/8 7
1-1/4
5/8 8
1-3/4
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