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IFI Announces New Standard for Steel Construction Industry
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2022-08-15
     Industrial Fasteners Institute (IFI) has announced the publication of a new IFI standard, IFI-171, thread dimensions for sizes 1-5/8 – 5-1/2 and 1-7/8 UNS for Assembly of Bolts, Studs and Nuts in the Steel Construction Industry.
 
     The new standard specifies thread dimensions and tolerances for two sizes of coarse threads, 1-5/8 – 5-1/2 and 1-7/8—5, that are commonly used in the steel construction industry. The standard resolves slight differences that commonly resulted from varied interpretations of ASME B1.1 (2019), which does not explicitly list sizes.
 
     IFI standards are developed by industry experts that volunteer at the request of IFI members and industry stakeholders. Many of these experts are also engaged in the production of the IFI Book of Fastener Standards, a compilation of nearly 100 standards from ASTM, ASME, SAE and the IFI.
美國工業扣件協會
鋼鐵建築產業標準
IFI
Standard for Steel Construction Industry
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2022-09-13

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