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Acorn (Cap) Nuts
Low Crown -- Steel & Stainless
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One Piece Hex Cap
Nuts, Low Crown
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Nominal Size
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Basic Major Diameter of Thread
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F
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G
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A
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H
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G
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T
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U
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Width Across Flats
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Width Across Corners
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Body Diameter
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Overall Height
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Hexagon Height
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Drill Depth
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Full Thread
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Max
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Min
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Max
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Min
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Max
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Min
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6
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.1380
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.3125
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.302
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.361
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.344
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.30
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.34
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.16
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.25
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.16
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8
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.1640
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.3125
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.302
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.361
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.344
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.30
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.34
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.16
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.25
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.16
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10
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.1900
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.3750
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.362
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.433
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.413
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.36
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.41
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.19
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.28
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.19
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1/4
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.2500
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.4375
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.428
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.505
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.488
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.41
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.47
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.22
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.34
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.25
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5/16
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.3125
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.5000
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.489
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.577
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.557
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.47
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.53
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.25
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.41
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.31
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3/8
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.3750
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.5625
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.551
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.650
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.628
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.53
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.62
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.28
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.45
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.38
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1/2
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.5000
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.7500
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.736
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.866
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.840
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.72
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.81
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.38
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.59
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.50
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5/8
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.6250
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.9375
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.922
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1.083
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1.051
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.91
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1.00
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.47
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.75
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.62
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3/4
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.7500
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1.0625
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1.045
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1.227
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1.191
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1.03
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1.16
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.53
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.88
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.75
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Two Piece
Hex Cap Nuts
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Nominal
Size
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Basic Major
Diameter
of Thread
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F
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G
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H
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Width Across Flats
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Width Across Corners
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Overall Height
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Max
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Min
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Max
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Min
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Max
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Min
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4
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.1120
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.248
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.225
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-
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-
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.200
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.177
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6
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.1380
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.3125
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.032
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.361
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.344
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.260
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.240
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8
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.1640
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.3125
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.032
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.361
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.344
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.260
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.240
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10
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.1900
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.3750
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.362
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.433
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.413
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.291
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.271
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1/4
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.2500
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.4375
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.423
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.505
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.482
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.338
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.318
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5/16
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.3125
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.562
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.545
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.650
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.621
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.385
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.365
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3/8
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.3750
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.625
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.607
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.722
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.692
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.432
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.412
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1/2
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.5000
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.750
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.736
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.866
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.840
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.572
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.552
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5/8
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.6250
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.938
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.909
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1.083
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1.037
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.807
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.787
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3/4
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.7500
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1.12
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1.08
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-
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-
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1.12
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1.08
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Description
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Steel: The low-crown cap nut is usually manufactured
in two pieces, a hex nut and an acorn-shaped top, zinc die cast to form
the finished part.
Stainless: Similar in design to the stell nut but made from an austenitic
stainless alloy. Nuts maybe one or two piece style. |
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Applications/
Advantages
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Cap nuts serve two main purposes: 1) as decorative pieces,
and 2) as covers for projecting threads. |
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Material
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Steel: Nuts shall be made
from a low-carbon steel which conforms to the following chemical composition
requirements:
Carbon: 0.47% Max; Phosphorus: 0.12% Max; Sulfur: 0.23% Max.
Stainless: 304L or equivalent stainless. |
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Plating
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Various finishes. |
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Copyright � 2007 Stanley Industries Incorporated, All rights reserved.
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641 North Rochester Road
Clawson, MI 48017
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ordering@stanleyind.com
800.253.2658
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