Section B—Couplers and Freight Car Draft Components (page of )
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Doc Affected
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Date
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CL No.
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Title
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M-921B
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12/17/1996
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C-8685
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Implementation of AAR Specification M-921B-97—End-of-Car Cushioning Devices for Freight Cars
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M-921-E
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5/12/2000
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C-9133
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Implementation of Specification M-921-E, Active Draft End-of-Car Cushioning Device for Freight Cars
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Book
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6/16/2000
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C-9172
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Availability of 2000 Revised Section B of the Manual of Standards and Recommended Practices
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Book
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7/1/2003
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C-9673
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Availability of Revised Section B of the Manual of Standards and Recommended Practices: Coupler and Freight Car Draft Components
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M-921G
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7/1/2003
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C-9675
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Implementation of New Specification M-921G-03, Facility Inspection Requirements for Manufacturers of New and Reconditioned Cushioning Devices for Freight Service
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M-921-H
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4/28/2004
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C-9824
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Implementation of New Specification for Unit Condition Indicators used on End-of-Car Cushion Units
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M-921F
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6/25/2004
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C-9871
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Implementation of Active Draft Cushioning Unit Specification M-921F
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M-901B
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8/3/2004
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C-9899
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Implementation of Revisions to M-901B, Standard for Reconditioning Draft Gears
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M-201
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2/7/2005
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C-10053
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Implementation of Revisions to Steel Foundry and Truck Castings Specifications: M-201, M-202 and M-203
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M-201
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3/22/2005
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C-10062
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Implementation of Revisions to Steel Foundry and Truck Castings Specifications: M-201, M-202 and M-203
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M-901C
M-901H
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10/23/2006
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C-10375
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Proposed Archival of All Standards and Specifications Related to 36-in. Draft Gear
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M-901G
M-901K
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4/13/2007
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C-10484
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Implementation of Administrative Changes in MSRP Section B, M-901G and M-901K Draft Gear Standards
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M-901
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4/13/2007
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C-10485
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Implementation of Revised MSRP Section B, M-901E Draft Gears with a Minimum Capacity of 36,000 ft-lb at a Reaction of 500,000 lb
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Book
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12/06/2007
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C-10648
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Implementation of Revised AAR MSRP Section B: Couplers and Freight Car Draft Components
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M-119
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11/14/2008
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C-10869
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Implementation—New Specification M-119, 7/8 in. Pin for F-Type Cushion Yoke, MSRP Section B: Couplers and Freight Car Draft Components
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S-119
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03/10/2009
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C-10954
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Implementation of Editorial Revision to MSRP Section B, Couplers and Freight Car Draft Components, Standard S-119, Draft Gear Followers
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M-119
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07/07/2009
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C-11054
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Revised Implementation—New Specification M-119, 7/8 in. Pin for F-Type Cushion Yoke with Trainline Support Bracket, MSRP Section B: Couplers and Freight Car Draft Components
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S-270
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09/29/2009
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C-11100
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Implementation, New Specification S-270 Wear Plate, Used in Cushion Unit and Draft Systems That Employ the Y-47 Pin for an F Shank
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S-100
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04/14/2010
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C-11204
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Implementation—Revision to AAR MSRP Section B, Couplers and Freight Car Draft Components, Standard S-100, “Bushings, Seamless Steel Tube—Coupler Shanks and Yokes”
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M-901B
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04/14/2010
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C-11205
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Implementation—Revision to AAR MSRP Section B, Couplers and Freight Car Draft Components, Specification M-901B, “Draft Gear, Secondhand and Reconditioned”
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S-120,
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2/16/2011
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C-11381
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Implementation of Revisions to AAR Manual of Standards and Recommended Practices Section B, Couplers and Freight Car Draft Components, S-120, Draft Key Retainers, S-121, Draft Key, Retainer, and Washer; and S-122, Draft Key Retainer.
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S-121,
S-122
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S-182
S-183
S-184
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4/13/2011
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C-11415
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Implementation—AAR MSRP Section B, Couplers and Freight Car Draft Components, New Standards S-182 Pocket Tolerances—EOC-8; S-183 Pocket Tolerances—EOC-9; and S-184 Pocket Tolerances—EOC-10
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RP-101
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10/25/2011
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C-11546
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Implementation: Revision to MSRP Section B, Couplers and Freight Car Draft Components, Recommended Practice RP-101 Draft Gear Inspection
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M-901B
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2/4/2012
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C-11612
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Implementation of Revisions to MSRP Section B, Couplers and Freight Car Draft Components, Specification M-901B, Draft Gear, Secondhand and Reconditioned
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S-119
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5/25/2012
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C-11687
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Revisions to MSRP Section S, Casting Details and Section B, Couplers and Freight Car Draft Components, M-211 and S-119 Draft Gear Followers
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M-921C
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6/26/2012
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C-11719
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Implementation of Revisions to MSRP Section B, Couplers and Freight Car Draft Components, Specification M-921C, Cushioning Devices, Reconditioned Approved for Freight Service
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M-921B
M-921D
M-921E
M-921F
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10/11/2012
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C-11788
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Implementation of Revisions to MSRP Section B, Couplers and Freight Car Draft Components, Cushion Unit Specifications M-921B, M-921D, M-921E and M-921F
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Book
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11/01/2012
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C-11797
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Implementation of Revised AAR Manual of Standards and Recommended Practices Section B, Freight Car Draft Components
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M-921C
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1/16/2013
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C-11875
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Implementation of Revised AAR MSRP Section B,Freight Car Draft Components, Specification M-921C “Cushioning Devices, Reconditioned, Approved for Freight Service"
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M-901B
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2/21/2013
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C-11898
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Implementation of Editorial Revisions to MSRP Section B, Couplers and Freight Car Draft Components, Specification M-901B, Draft Gear, Secondhand and Reconditioned
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M-901B
M-901E
M-901G
M-901K
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3/13/2015
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C-12339
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Implementation of Editorial Revisions to MSRP Section B, Freight Car Draft Components, Specifications M-901B, M-901E, M-901G, and M-901K (Specifications for Draft Gears, marking sections)
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S-121
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6/22/2015
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C-12404
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Implementation of editorial changes to AAR MSRP Section B, Freight Car Draft Components, Standard S-121, Draft Key
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S-121
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9/12/2017
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C-12954
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Implementation of Revisions to MSRP Section B, Freight Car Draft Components, Standard S-121, Draft Key, Regarding Manufacturing Dimensional Tolerances and Markings
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M-118
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1/26/2018
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C-13063
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Implementation of Revisions to MSRP Section B, Freight Car Draft Components, Specification M-118, Regarding Coupler and Knuckle Pin Mechanical Properties
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M-921A
M-921C
M-921H
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3/13/2018
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C-13081
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Implementation of Editorial Revisions to MSRP Section B, Freight Car Draft Components, Unit Condition Indicator requirements for Cushioning Devices, M-921A Sliding Sill, M-921C Reconditioned, M-921H UCI
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