Cross reference · ANSI · Lag screw

ANSIB1821 cross referenceMS16992

ANSIB1821 is a lag screw series on 18 government stock numbers. It is cross-referenced to MS16992. Each one is labeled with how strong the evidence is.

Series in the government catalog

18 stock numbers

Catalog-only listings need engineering approval before you substitute.

Manufacturers

    1 more on one stock number each: AF60
    • AF60AllfastCatalog only, needs approvalon 1 of 18 stock numbers

    Standards

    • MS16992MSCatalog only, needs approvalon 15 of 18 stock numbers, 16 sizes
    • FFB561Federal specificationsCatalog only, needs approvalon 15 of 18 stock numbers, 2 sizes
    • ASMEB1821ASMECatalog only, needs approvalon 13 of 18 stock numbers, 2 sizes
    • FFS85Federal specificationsCatalog only, needs approvalon 2 of 18 stock numbers
    6 more on one stock number each: NASM90726, MS16922, MS35291, MS90725, MS90726, AN540
    • NASM90726NASCatalog only, needs approvalon 1 of 18 stock numbers
    • MS16922MSCatalog only, needs approvalon 1 of 18 stock numbers
    • MS35291MSCatalog only, needs approvalon 1 of 18 stock numbers
    • MS90725MSCatalog only, needs approvalon 1 of 18 stock numbers
    • MS90726MSCatalog only, needs approvalon 1 of 18 stock numbers
    • AN540ANCatalog only, needs approvalon 1 of 18 stock numbers

    Airframer and OEM drawings

      1 more on one stock number each: USAF60
      • USAF60US Air ForceCatalog only, needs approvalon 1 of 18 stock numbers

      Plus 32 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).

      Get quotes for ANSIB1821

      Cited equivalents go on the request as acceptable alternates. Catalog-only listings do not.

      Install tooling

      SpecLok has no catalog family for ANSIB1821. Tooling for the cross-referenced series:

      None of these series is in the SpecLok catalog yet.

      Sizes by maker

      18 stock numbers
      Part numbers DLA FLIS lists for ANSIB1821 and the series cross-referenced to it, by stock number
      NSNANSIB1821MS16992FFB561ASMEB1821Last DLA price
      5305-00-071-2237ANSI-B18.2.1ASME-B18.2.1
      5305-00-226-7767ANSI-B18.2.1ASMEB18.2.1
      5305-00-406-9224ANSI-B18.2.1MS16992-544FFB561ASME-B18.2.1
      5305-00-145-1064ANSIB18.2.1MS16992-545FFB561ASME-B18.2.1
      5305-00-177-5505ANSIB18.2.1MS16992-525FF-B-561ASMEB18.2.1
      5305-00-177-5542ANSIB18.2.1MS16992-507FF-B-561ASME-B18.2.1
      5305-00-177-5578ANSIB18.2.1MS16992-528FF-B-561
      5305-00-177-5622ANSIB18.2.1MS16992-506FFB561ASME-B18.2.1
      5305-00-402-5747ANSIB18.2.1MS16992-503FF-B-561
      5305-00-402-5748ANSIB18.2.1MS16992-505FF-B-561ASMEB18.2.1
      5305-00-402-5749ANSIB18.2.1MS16992-508FF-B-561
      5305-00-402-5750ANSIB18.2.1MS16992-509FF-B-561
      5305-00-402-5757ANSIB18.2.1MS16992-522FFB561ASME-B18.2.1
      5305-00-402-5759ANSIB18.2.1FF-B-561ASME-B18.2.1
      5305-00-402-5760ANSIB18.2.1MS16992-526-ZE
      Show 3 more sizes
      More sizes
      NSNANSIB1821MS16992FFB561ASMEB1821Last DLA price
      5305-00-406-5178ANSIB18.2.1MS16992-543FFB561ASMEB18.2.1
      5305-00-406-9219ANSIB18.2.1MS16992-541FF-B-561ASME-B18.2.1
      5305-00-406-9226ANSIB18.2.1MS16992-548FF-B-561ASME-B18.2.1

      Each row is one National Stock Number and the part numbers DLA FLIS lists on it, as written there. A blank means FLIS lists no part in that series on the stock number, not that the size does not exist.

      Sources and how to read this page.Details

      Reference numbers the Federal Logistics Information System records against the same National Stock Number. A supply-catalog cross-reference, not an engineering-approved interchangeability: confirm against the controlling drawing or spec before substituting. Only equivalents marked cited have a manufacturer or government document, linked with each.

      Source: DLA Federal Logistics Information System, via DLA PUB LOG ↗ (FLIS Data Electronic Reading Room ↗), data as of 2025-03-18 (March 2025 snapshot). Federal supply class 5305 Screws. Issuer names are SpecLok's reading of the filing CAGE code; distributors are not named. Compiled 2026-10-02.

      Reference only: the controlling drawing, its process spec and the manufacturer's installation instructions govern. How to use these answers

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