Recommended Practice

The Purchase and Acceptance of Type H-Tightlock Couplers


This specification covers material, purchase, and acceptance requirements for APTA approved Type H Tightlock couplers and their parts, coupler yokes, draft gear followers, radial connection castings, shank pins, yoke pins, bushings and other parts.

Document History
Document Number Version Publication Date Publication Related Information
APTA PR-M-RP-003-98 01/22/1998 Published Current


type H Tightlock couplers, radial connections, yokes, specification M-206-97



​Get Involved

Want to participate in development of this document? Join the Working Group or Learn More

Related Documents

​ ​​

Print Friendly, PDF & Email