Cross reference · MS (US military standards) · Close tolerance screw

MS21125 cross referenceHowmet CA2651, Avibank AS116

MS21125 is a close tolerance screw series on 27 government stock numbers. Its closest equivalents are Howmet CA2651, Avibank AS116. Each one is labeled with how strong the evidence is.

Equivalents in the government catalog

27 stock numbers

Catalog-only listings need engineering approval before you substitute.

Manufacturers

  • CA2651Howmet Fastening SystemsCatalog only, needs approvalon 12 of 27 stock numbers, 12 sizes
  • CA2652Howmet Fastening SystemsCatalog only, needs approvalon 12 of 27 stock numbers, 12 sizes
  • AS116AvibankCatalog only, needs approvalon 9 of 27 stock numbers, 9 sizes

Standards

    2 more on one stock number each: NASM21125B, NASM23964
    • NASM21125BNASCatalog only, needs approvalon 1 of 27 stock numbers
    • NASM23964NASCatalog only, needs approvalon 1 of 27 stock numbers

    Plus 2 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).

    Get quotes for MS21125

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

    Install tooling

    SpecLok has no catalog family for MS21125. Tooling for the equivalents:

    None of the equivalents is in the SpecLok catalog yet.

    Sizes by maker

    27 stock numbers
    Part numbers DLA FLIS lists for MS21125 and its equivalents, by stock number
    NSNMS21125CA2651AS116Last DLA price
    5305-00-108-9698MS21125-4-21CA2651-4-21
    5305-00-108-9697MS21125-4-32CA2651-4-32
    5305-00-179-9439MS21125-0308AS116-03-08
    5305-01-188-7279MS21125-309CA2651-3-09
    5305-00-082-4729MS21125-0310AS116-03-10
    5305-01-197-3998MS21125-410CA2651-4-10
    5305-00-179-9437MS21125-0411AS116-04-11
    5305-00-092-6689MS21125-411CA2651-4-11
    5305-01-197-3982MS21125-414CA2651-4-14
    5305-00-093-6685MS21125-415CA2651-4-15
    5305-01-197-3983MS21125-0416
    5305-00-093-6683MS21125-417CA2651-4-17
    5306-00-395-4998MS21125-0418AS116-04-18
    5305-01-056-0166MS21125-418CA2651-4-18
    5305-00-097-4441MS21125-419CA2651-4-19
    Show 12 more sizes
    More sizes
    NSNMS21125CA2651AS116Last DLA price
    5305-00-099-7643MS21125-0426AS116-04-26
    5305-00-097-4484MS21125-0428AS116-04-28
    5305-00-253-5230MS21125-0431AS116-04-31
    5305-01-197-4008MS21125-433CA2651-4-33
    5305-01-168-1204MS21125-435
    5305-01-020-0871MS21125-0438AS116-04-38
    5305-00-090-4097MS21125-0514AS116-05-14
    5305-00-606-9496MS21125-0609
    5305-00-606-9526MS21125-0610
    5305-01-004-4094MS21125-643CA2651-6-43
    5305-00-606-9527MS21125-0665
    5305-01-232-5599MS21125-6A29

    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 classes 5305 Screws, 5306 Bolts. Issuer names are SpecLok's reading of the filing CAGE code; distributors are not named. Compiled 2026-10-02.

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