Crosby shackles and hooks are forged from Quenched and Tempered (Q&T) alloy steel. Q&T steel is ductile under overload, meaning it deforms visibly before failure, providing warning to remove the hardware from service. This contrasts with normalized steel, which can fail without visible warning. All Crosby bows and pins are quenched and tempered for enhanced performance in cold temperatures and adverse field conditions.

McKissick Blocks

McKissick is Crosby's block and sheave line for crane and rigging applications. Bronze bushing blocks suit slower line speeds and intermittent use. Roller bearing blocks are specified for higher line speeds and continuous cycling. McKissick blocks are fatigue-rated and manufactured to design factors required by API 2C and OSHA 1926.1431 for personnel lifting system integration.

Traceability and Compliance

Crosby hardware meets ASME B30.26 and OSHA 29 CFR 1926.251(a)(2) identification requirements. Each shackle is permanently marked with the Working Load Limit, nominal size, PIC code for mill heat lot traceability, and 45-degree angle indicators for sling angle verification. Mill test reports, proof test certificates, and compliance documentation are available on request.

Holloway Houston Crosby Services

• In-House Proof Testing: Certified documentation for shackles, hooks, and assemblies.
• Authorized Repair Center: McKissick block rebuilds and hardware inspection per ASME B30.26.
• Houston Stock: Standard sizes ship same day.
• Documentation Packages: MTRs, proof test certs, and compliance docs on request.

Crosby rigging hardware is manufactured to ASME B30.26 (Rigging Hardware) and ASME B30.10 (Hooks). McKissick blocks meet API 2C and OSHA 1926.1431 design factor requirements.