13-15
®
GENERAL TORQUE SPECIFICATIONS
8.8
10.9
12.9
8.8
10.9
12.9
NOTICE
Ÿ
Do not re-use grade 8 or grade 9 bolts or nuts - replace with new ones.
Ÿ
Loose or overtorqued bolts can cause death, severe injury, or property
damage. Maintain proper bolt torque. Visually check bolts daily. Check
torque every 50 hours.
Ÿ
Grade 9 bolts must be used with Grade 9 washers.
WARNING
!
This BARKO technical standard lists torque specifications for commonly used threaded fasteners.
This standard is to be followed by all business functions of BARKO Hydraulics, LLC unless otherwise
noted.
NUT & BOLT GRADES AND IDENTIFICATION
UNIFIED THREAD STANDARD (UTS)
ISO METRIC SCREW THREAD
ACRONYMS / DEFINITIONS
Ÿ
SAE
Society of Automotive Engineers
Ÿ
ASTM
American Society for Testing and Materials
Ÿ
ISO
International Organization for Standardization
Ÿ
ANSI
American National Standards Institute
Ÿ
UTS
Unified Thread Standard
Ÿ
SHCS
Socket Head Cap Screw
Ÿ
UNF
Unified National Fine Thread, per ANSI B1.1
Ÿ
UNC
Unified National Coarse Thread, per ANSI B1.1
Ÿ
HHCS
Hex Head Cap Screw
Ÿ
ASME
The American Society of Mechanical Engineers
Grade 5
Class 8.8
Grade 8
Class 10.9
Grade 9
Class 12.9
BOLTS
BOLTS
NUTS
NUTS
LOCK NUTS
LOCK NUTS
07/26/2018
Updated
OPERATOR’S
Summary of Contents for 295B
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