ATTACHMENT
ILLUSTRATED
PARTS LIST
ATTACHMENT
Mfg. No. Description
1690082
42” Rotary Mower Hitch Assembly
MANUFACTURING, INC.
500 N Spring Street / PO Box 997
Port Washington, WI 53074-0997 USA
Rev. 03/2002
TP-400-2623-00-AT-SMA
© Copyright 2002 Simplicity Manufacturing, Inc.All Rights Reserved.
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42” Rotary Mower Hitch Assembly
REF NO.
PART NO.
QTY.
DESCRIPTION
1
2
3
4
5
6
7
8
9
172468
105051
917279
918430
916966
916951
174189
922606
916965
176439
174845
1
2
2
2
2
2
1
3
3
1
1
ROCKER ARM ASSEMBLY
SPACER
CAPSCREW, Hex Head, 1/2-13 X 1-1/4
WASHER
LOCKWASHER
NUT, Hex, 1/2-13
PULLEY
CAPSCREW, Hex Head, 3/8-16 X 1-3/4
LOCKWASHER
V-BELT
10
11
DECAL, Installation
Footnotes:
The above parts group applies to the following Mfg. Nos.:
1690082 Hitch, Mower Deck
TP 400-2623-00-AT-SMA
3
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Hardware Identification & Torque Specifications
Common Hardware Types
Torque Specification Chart
FOR STANDARD MACHINE HARDWARE (Tolerance 20%)
Hex Head Capscrew
Washer
No
Marks
Hardware
Lockwasher
Grade
Carriage Bolt
SAE Grade 2
SAE Grade 5
SAE Grade 8
Hex Nut
Size Of
in/lbs
in/lbs
in/lbs
Hardware ft/lbs
Nm.
2.1
2.3
3.1
3.5
7.6
ft/lbs
Nm.
3.4
3.5
4.9
5.5
10.9
13.6
23.1
25.8
40.8
ft/lbs
Nm.
4.6
4.9
6.8
7.7
16.3
19.0
34.0
34.0
61.2
Standard Hardware Sizing
8-32
8-36
19
20
30
31
43
49
8
10
17
19
30
35
50
55
75
41
43
60
68
12
14
25
27
45
When a washer or nut is identified as 1/2”, this is the
Nominal size, meaning the inside diameter is 1/2 inch; if a
second number is present it represent the threads per inch
10-24
10-32
1/4-20
1/4-28
5/16-18
5/16-24
3/8-16
3/8-24
7/16-14
7/16-20
1/2-13
1/2-20
9/16-12
9/16-18
5/8-11
5/8-18
3/4-10
3/4-16
7/8-9
27
31
66
76
11
12
20
23
30
35
50
55
65
75
90
100
160
180
140
155
220
240
When bolt or capscrew is identified as 1/2 - 16 x 2”, this
means the Nominal size, or body diameter is 1/2 inch; the
second number represents the threads per inch (16 in this
example, and the final number is the body length of the
bolt or screw (in this example 2 inches long).
8.6
15.0
16.3
27.2
31.3
40.8
47.6
68.0
74.8
88.4
102.0
122.4
136
217.6
244.8
190.4
210.8
299.2
326.4
The guides and ruler furnished below are designed to
help you select the appropriate hardware and tools.
47.6
68.0
74.8
50
70
80
68.0
95.2
0
108.8
149.6
163.2
204.0
231.2
299.2
326.4
525.0
571.2
816.0
897.6
1/4
102.0
122.4
149.6
163.2
204.0
244.8
353.6
408.0
544.0
598.4
788.8
110
120
150
170
220
240
386
420
600
660
Nut, 1/2”
90
1/2
Inside
Diameter
110
120
150
180
260
300
400
440
580
640
3/4
1
2
3
4
1/4
1/2
3/4
7/8-14
1-8
1-12
Screw, 1/2 x 2
900 1,244.0
Body
Diameter
870.4 1,000 1,360.0
1/4
NOTES
1/2
1. These torque values are to be used for all hardware
excluding: locknuts, self-tapping screws, thread forming
screws, sheet metal screws and socket head setscrews.
2. Recommended seating torque values for locknuts:
a. for prevailing torque locknuts - use 65% of grade 5
torques.
b. for flange whizlock nuts and screws - use 135% of
grade 5 torques.
3. Unless otherwise noted on assembly drawings, all torque
values must meet this specification.
Body
Length
3/4
1/4
1/2
3/4
Wrench & Fastener Size Guide
1/2
7/16
DIA.
DIA.
3/8
5/16
1/4
1/4” Bolt or Nut
Wrench—7/16”
5/16” Bolt or Nut
Wrench—1/2”
3/8” Bolt or Nut
Wrench—9/16”
7/16” Bolt or Nut
Wrench (Bolt)—5/8”
Wrench (Nut)—11/16”
1/2” Bolt or Nut
Wrench—3/4”
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