Cross reference · MS (US military standards) · Setscrew

MS51966 cross referenceFFS200

MS51966 is a setscrew series on 66 government stock numbers. Its closest equivalents are FFS200. Each one is labeled with how strong the evidence is.

Equivalents in the government catalog

66 stock numbers

Catalog-only listings need engineering approval before you substitute.

Manufacturers

    3 more on one stock number each: LL24XD02J, LL62XA02J8E, LLL135211
    • LL24XD02JLong-LokCatalog only, needs approvalon 1 of 66 stock numbers
    • LL62XA02J8ELong-LokCatalog only, needs approvalon 1 of 66 stock numbers
    • LLL135211Long-LokCatalog only, needs approvalon 1 of 66 stock numbers

    Standards

    • FFS200Federal specificationsCatalog only, needs approvalon 34 of 66 stock numbers, 2 sizes
    • NASM51966NASCatalog only, needs approvalon 3 of 66 stock numbers, 2 sizes
    • AN565A1032HANCatalog only, needs approvalon 2 of 66 stock numbers, 2 sizes
    5 more on one stock number each: AN565A428H, AN565A524H, AN565A624H, FFS103TYPE3STYLE, FFS200B
    • AN565A428HANCatalog only, needs approvalon 1 of 66 stock numbers
    • AN565A524HANCatalog only, needs approvalon 1 of 66 stock numbers
    • AN565A624HANCatalog only, needs approvalon 1 of 66 stock numbers
    • FFS103TYPE3STYLEFederal specificationsCatalog only, needs approvalon 1 of 66 stock numbers
    • FFS200BFederal specificationsCatalog only, needs approvalon 1 of 66 stock numbers

    Airframer and OEM drawings

      1 more on one stock number each: HFS0
      • HFS0HoneywellCatalog only, needs approvalon 1 of 66 stock numbers

      Plus 16 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).

      Get quotes for MS51966

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

      Install tooling

      SpecLok has no catalog family for MS51966. Tooling for the equivalents:

      None of the equivalents is in the SpecLok catalog yet.

      What the government paid

      DLA awards on 9 of 66 stock numbers, 22 awards from 2023-02-14 to 2026-02-25.

      Latest award per stock number: $1.18 to $113.06 each.

      DLA production lead time: 25 to 210 days.

      Per size in the table below.

      DLA prices at DLA quantities, not a quote.Source

      DLA award prices at DLA quantities and terms, not a commercial quote. Each award may bundle packaging, delivery and inspection terms that a commercial buy does not. Vendors are shown by CAGE code only.

      Source: DLA FOIA Electronic Reading Room ↗, public FOIA releases. Files: 2023ContHist.zip/2023ContractHistory.txt, 2024ContHist.zip/2024ContractHistory.txt, contracthist2025.zip/contracthist2025.txt, 2026-09-16-1038_contracthist.zip/2026-09-16-1038_contracthist.txt.

      Sizes by maker

      66 stock numbers
      Part numbers DLA FLIS lists for MS51966 and its equivalents, by stock number
      NSNMS51966FFS200Last DLA price
      5305-00-724-7877MS51966-1
      5305-00-724-7876MS51966-7
      5305-00-724-7875MS51966-8
      5305-00-724-7873MS51966-16
      5305-00-724-7280MS51966-17$7.73 2025-10
      5305-00-302-9705MS51966-19FFS200
      5305-00-724-7276MS51966-25$1.18 2023-12
      5305-00-724-7275MS51966-26FF-S-200
      5305-00-724-7274MS51966-27FFS200
      5305-00-724-7272MS51966-29
      5305-01-577-6839MS51966-36
      5305-00-728-6308MS51966-48FFS200
      5305-00-728-6309MS51966-49
      5305-00-728-6310MS51966-50
      5305-00-728-6311MS51966-51
      Show 45 more sizes
      More sizes
      NSNMS51966FFS200Last DLA price
      5305-00-728-6312MS51966-52
      5305-00-728-6313MS51966-53FFS200
      5305-01-059-0195MS51966-54
      5305-00-728-6315MS51966-60
      5305-00-728-6316MS51966-61
      5305-00-728-6317MS51966-62FFS200
      5305-00-728-6320MS51966-63
      5305-00-728-6321MS51966-64FFS200
      5305-00-728-6322MS51966-65
      5305-00-728-6323MS51966-66
      5305-00-728-6331MS51966-67FF-S-200
      5305-00-762-6054MS51966-73
      5305-00-728-6339MS51966-74
      5305-00-728-6341MS51966-76FFS200
      5305-00-728-6345MS51966-80
      5305-00-728-6347MS51966-87
      5305-01-340-1094MS51966-88FF-S-200
      5305-00-728-6349MS51966-89
      5305-00-728-6350MS51966-90
      5305-00-728-6352MS51966-92FFS200
      5305-00-728-6354MS51966-99
      5305-00-728-6355MS51966-100$105.00 2024-07
      5305-00-767-0437MS51966-104
      5305-01-167-7653MS51966-111FF-S-200
      5305-01-670-4324MS51966-112
      5305-01-026-4368MS51966-113FF-S-200$113.06 2025-12
      5305-01-128-4079MS51966-114FF-S-200
      5305-01-250-5235MS51966-118FF-S-200
      5305-01-116-7356MS51966-120FF-S-200
      5305-01-038-4760MS51966-122FF-S-200$2.60 2026-02
      5305-01-048-9658MS51966-123FF-S-200$21.38 2026-01
      5305-01-071-8134MS51966-124FF-S-200$2.31 2025-03
      5305-01-246-1765MS51966-126FF-S-200
      5305-01-319-9878MS51966-128FF-S-200
      5305-01-340-9052MS51966-129
      5305-01-032-0552MS51966-130FF-S-200
      5305-01-213-4005MS51966-131FF-S-200
      5305-01-255-3438MS51966-134FF-S-200
      5305-01-209-3951MS51966-135FF-S-200
      5305-01-084-6068MS51966-136FF-S-200
      5305-01-500-1913MS51966-137
      5305-01-081-5043MS51966-147FF-S-200
      5305-01-237-2133MS51966-151FF-S-200
      5305-01-483-8072MS51966-152
      5305-01-163-0582MS51966-157FF-S-200

      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. 6 more stock numbers are not shown.

      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.

      Next · 3 Quote

      Quote MS51966 or an equivalent

      Get quotes adds the part and its install tooling to your quote. Check another part number in the cross reference.

      Open your quote →Look up a specific size →All cross references →