Recommended Practice

Second Hand and Reconditioned Type H-Tightlock Couplers


This recommended practice covers requirements for secondhand and reconditioned Type H Tightlock couplers and their parts.

Document History
Document Number Version Publication Date Publication Related Information
APTA PR-M-RP-004-98 Rev. 2 09/17/2020 Published Current
APTA PR-M-RP-004-98 Rev. 1 01/22/1998 Published Superseded


secondhand couplers, reconditioned couplers


This document details requirements for secondhand and reconditioned APTA-approved Type H Tightlock couplers and their parts, coupler yokes, draft gear followers, connecting pins and other parts used in the coupler and yoke passenger car applications. This recommended practice was titled “Secondhand and Reconditioned Type H Tightlock Couplers” in the previous publication of this document.

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Related Documents

  • All inquiries regarding gaging should be directed to the Mechanical Committee of Standard Coupler Manufacturers. They can be reached by contacting the Railway Supply Institute.

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