Torque Specifications - Blizzard Power Plow 810SS Assembly & Operation Manual

Torque Specifications

Grade Identification Marking for J429 - Grade 5 Bolt
• Material: Medium carbon steel: quenched and tempered
• Minimum Proof Strength: 85,000 psi
• Minimum Tensile Strength: 120,000 psi
• Core Hardness Rockwell (min.): C25, (max.): C34
• Minimum Yield Strength: 92,000 psi
Nominal
Thread Clamp Loads
Size (lbs.)
1/4-20 2,000
5/16-18 3,350
3/8-16 4,950
7/16-14 6,800
1/2-13 9,050
9/16-12 11,600
5/8-11 14,500
3/4-10 21,300
7/8-9 29,435
1-8 38,600
Grade Identification Marking for Metric - Grade 8.8 Bolt
• Material: Medium carbon steel: quenched and tempered
8.8
• Minimum Proof Strength: 580 MPa
• Minimum Tensile Strength: 800 MPa
• Core Hardness Rockwell (min.): C22, (max.): C32
• Minimum Yield Strength: 640 MPa
Diameter
(millimeters) Clamp Loads
(Newton)
5 6177
6 8743
7 12570
8 15921
10 25230
12 36670
14 50025
16 70650
18 86400
20 110250
37˚ JIC Flare Torque Values
Turns Size ft-lbs min./max.
N/A -02 6 - 7
N/A -03 8 - 9
2 -04 11 - 12
2 -05 14 - 15
1-1/2 -06 18 - 20
1-1/2 -08 36 - 39
1-1/2 -10 57 - 63
1-1/4 -12 79 - 88
1 -14 94 - 103
1 -16 108 - 113
1 -20 127 - 133
1 -24 158 - 167
1 -32 245 - 258
Disclaimer: All torque values included in the charts above are advisory only, and their use by anyone is entirely voluntary. Reliance on the contents for any purpose by anyone is the sole risk of that person and Blizzard Corporation is not responsible for any loss, claim or damages
arising therefrom. Blizzard Corporation has made an effort to present the above contents accurately, but we do not guarantee its completeness or validity. This information is subject to change at any time, without notice. Blizzard Corporation makes no representations or warranties,
express or implied, in connection with the information.
14
Torque Specifications
SAE J429 - Grade 5
Tightening Torque
"Lubricated" "Dry"
75 in-lbs 100 in-lbs
157 in-lbs 210 in-lbs
23 ft-lbs 31 ft-lbs
37 ft-lbs 50 ft-lbs
57 ft-lbs 75 ft-lbs
82 ft-lbs 109 ft-lbs
113 ft-lbs 151 ft-lbs
200 ft-lbs 266 ft-lbs
321 ft-lbs 430 ft-lbs
482.5 ft-lbs 640 ft-lbs
Metric Class 8.8
Tightening Torque
"Lubricated" "Dry"
4.63 N-m 6.18 N-m
7.87 N-m 10.5 N-m
13.2 N-m 17.6 N-m
19.1 N-m 25.5 N-m
37.8 N-m 50.5 N-m
66.0 N-m 88.0 N-m
105 N-m 140 N-m
170 N-m 226 N-m
233 N-m 311 N-m
330 N-m 441 N-m
Assembly Steps w/Visual Check
1. Make sure the tubing and threads are clean.
2. Lubricate the threads with 10W hydraulic oil.
3. Hand tighten the nut/sleeve to appox. 30 in-lbs.
4. Make alignment marks on the nut and fitting.
5. Proceed to tighten to turns or ft-lb values.
6. When fully tightened make a 2nd set of align-
ment marks at the fully tightened position.
Note: Torque values specified are for threads
lubricated with 10W hydraulic oil.
Sizes -02 through -08 are less tolerant to over-
torque abuse. This will reduce the clamping force
resulting in loss of seal and reduction in flow.
Grade Identification Marking for J429 - Grade 8 Bolt
• Material: Medium carbon alloy steel:quenched and tempered
• Minimum Proof Strength: 120,000 psi
• Minimum Tensile Strength: 150,000 psi
• Core Hardness Rockwell (min.): C33, (max.): C39
• Minimum Yield Strength: 130,000 psi
Nominal
Thread Clamp Loads
Size (lbs.)
1/4-20 2,850
5/16-18 4,700
3/8-16 6,950
7/16-14 9,600
1/2-13 12,800
9/16-12 16,400
5/8-11 20,300
3/4-10 30,100
7/8-9 41,550
1-8 54,540
Grade Identification Marking for Metric - Grade 10.9 Bolt
• Material: Low carbon alloy steel: quenched and tempered
10.9
• Minimum Proof Strength: 830 MPa
• Minimum Tensile Strength: 1040 MPa
• Core Hardness Rockwell (min.): C32, (max.): C39
• Minimum Yield Strength: 940 MPa
Diameter
Clamp Loads
(millimeters)
(Newton)
5 8840
6 12512
7 17990
8 22784
10 36105
12 52475
14 71587
16 97732
18 119520
20 152513
O-Ring Boss Torque Values
Size ft-lbs min./max.
-02 6 - 7
-03 8 - 10
-04 13 - 15
-05 17 - 21
-06 22 - 25
-08 40 - 43
-10 43 - 57
-12 68 - 75
-14 90 - 99
-16 112 - 123
-20 146 - 200
-24 154 - 215
-32 218 - 290
SAE J429 - Grade 8
Tightening Torque
"Lubricated" "Dry"
107 in-lbs 143 in-lbs
220 in-lbs 305 in-lbs
32.5 ft-lbs 44 ft-lbs
53 ft-lbs 70 ft-lbs
80 ft-lbs 107 ft-lbs
115 ft-lbs 154 ft-lbs
159 ft-lbs 21 ft-lbs
282 ft-lbs 376 ft-lbs
454 ft-lbs 606 ft-lbs
680 ft-lbs 900 ft-lbs
Metric Class 10.9
Tightening Torque
"Lubricated" "Dry"
6.63 N-m 8.84 N-m
11.3 N-m 15.0 N-m
18.9 N-m 25.2 N-m
27.3 N-m 36.5 N-m
54.1 N-m 72.2 N-m
94.5 N-m 125 N-m
150 N-m 200 N-m
235 N-m 313 N-m
323 N-m 430 N-m
458 N-m 610 N-m
O-Ring Boss Assembly
1. Verify the port, O-ring, sealing surfaces, and threads are
clean and free of damage.
2. Lubricate the threads and the O-ring with 10W hydraulic oil.
3. For an adjustable O.R.B., completely back-off the lock nut
and the washer.
4. Hand tighten the fitting until it contacts the port spotface.
Point the elbow or tee in the desired direction and hold.
5. Proceed to tighten to the proper specified torque value.
Note: Torque values specified are for threads lubricated
with 10W hydraulic oil.