Cross reference · MS (US military standards) · Tapping screw

MS51861 cross referenceFFS107

MS51861 is a tapping screw series on 98 government stock numbers. Its closest equivalents are FFS107. Each one is labeled with how strong the evidence is.

Equivalents in the government catalog

98 stock numbers

Catalog-only listings need engineering approval before you substitute.

Manufacturers

    4 more on one stock number each: P109880, PARKERKAL0N, PK85XA, TYPEJN061
    • P109880Stanley Engineered FasteningCatalog only, needs approvalon 1 of 98 stock numbers
    • PARKERKAL0NStanley Engineered FasteningCatalog only, needs approvalon 1 of 98 stock numbers
    • PK85XAStanley Engineered FasteningCatalog only, needs approvalon 1 of 98 stock numbers
    • TYPEJN061Stanley Engineered FasteningCatalog only, needs approvalon 1 of 98 stock numbers

    Standards

    • FFS107Federal specificationsCatalog only, needs approvalon 85 of 98 stock numbers, 2 sizes
    • NASM51861NASCatalog only, needs approvalon 9 of 98 stock numbers, 4 sizes
    • ANSIB1864ANSICatalog only, needs approvalon 3 of 98 stock numbers
    • AN530ANCatalog only, needs approvalon 2 of 98 stock numbers, 2 sizes
    8 more on one stock number each: NAS51861, NASM51861P/N, AN530C2RF, AN530C4R, AN530C6R, AN530C6RF, AMSEB1864, ASMEB1821
    • NAS51861NASCatalog only, needs approvalon 1 of 98 stock numbers
    • NASM51861P/NNASCatalog only, needs approvalon 1 of 98 stock numbers
    • AN530C2RFANCatalog only, needs approvalon 1 of 98 stock numbers
    • AN530C4RANCatalog only, needs approvalon 1 of 98 stock numbers
    • AN530C6RANCatalog only, needs approvalon 1 of 98 stock numbers
    • AN530C6RFANCatalog only, needs approvalon 1 of 98 stock numbers
    • AMSEB1864ASMECatalog only, needs approvalon 1 of 98 stock numbers
    • ASMEB1821ASMECatalog only, needs approvalon 1 of 98 stock numbers

    Airframer and OEM drawings

      3 more on one stock number each: 1507HX, 27KP, ACA1639
      • 1507HXOshkoshCatalog only, needs approvalon 1 of 98 stock numbers
      • 27KPOshkoshCatalog only, needs approvalon 1 of 98 stock numbers
      • ACA1639LeonardoCatalog only, needs approvalon 1 of 98 stock numbers

      Plus 91 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).

      Get quotes for MS51861

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

      Install tooling

      SpecLok has no catalog family for MS51861. Tooling for the equivalents:

      None of the equivalents is in the SpecLok catalog yet.

      What the government paid

      DLA awards on 11 of 98 stock numbers, 25 awards from 2023-05-25 to 2026-06-15.

      Latest award per stock number: $0.0400 to $6.00 each.

      DLA production lead time: 22 to 300 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

      98 stock numbers
      Part numbers DLA FLIS lists for MS51861 and its equivalents, by stock number
      NSNMS51861FFS107Last DLA price
      5305-01-020-9577MS51861-1FF-S-107
      5305-01-020-7140MS51861-2$0.67 2024-09
      5305-01-025-4800MS51861-3FF-S-107
      5305-01-162-7889MS51861-4FF-S-107
      5305-00-140-8001MS51861-12FFS107
      5305-00-014-4723MS51861-14
      5305-00-432-4169MS51861-14FFS107
      5305-00-053-1114MS51861-15
      5305-00-432-4173MS51861-15FFS107
      5305-00-499-4805MS51861-16FFS107
      5305-01-173-3502MS51861-17FF-S-107
      5305-00-432-8027MS51861-22FFS107
      5305-00-432-4163MS51861-24FFS107
      5305-00-432-4164MS51861-25FFS107$0.0400 2026-04
      5305-00-432-4165MS51861-26FFS107$0.0600 2026-01
      Show 45 more sizes
      More sizes
      NSNMS51861FFS107Last DLA price
      5305-00-432-4166MS51861-27FFS107
      5305-00-432-4167MS51861-28FFS107
      5305-00-432-4168MS51861-29FFS107
      5305-00-058-1082MS51861-34FF-S-107
      5305-00-432-4170MS51861-35FFS107
      5305-00-432-4171MS51861-36FFS107
      5305-00-432-4172MS51861-37FF-S-107
      5305-00-926-5611MS51861-37
      5305-00-432-7953MS51861-38FFS107
      5305-00-432-7954MS51861-39FF-S-107
      5305-00-432-7956MS51861-40FFS107
      5305-00-472-5252MS51861-41FFS107
      5305-00-836-8476MS51861-43
      5305-00-138-0069MS51861-44FFS107
      5305-00-432-4201MS51861-45FFS107
      5305-01-295-0089MS51861-45
      5305-00-432-4202MS51861-46FFS107
      5305-00-432-4203MS51861-47FFS107
      5305-00-432-4204MS51861-48FFS107$0.18 2023-10
      5305-00-432-4205MS51861-49FFS107
      5305-01-295-3026MS51861-49
      5305-00-432-4206MS51861-50FFS107
      5305-00-432-4210MS51861-51FFS107
      5305-01-310-6018MS51861-51FF-S-107
      5305-00-052-8236MS51861-52
      5305-01-200-2063MS51861-52FF-S-107
      5305-00-476-7387MS51861-53FFS107
      5305-00-432-4251MS51861-65FFS107
      5305-00-432-4252MS51861-66FFS107
      5305-00-432-4253MS51861-67FFS107
      5305-00-477-0144MS51861-68FFS107
      5305-00-432-4254MS51861-69FFS107
      5305-00-432-4255MS51861-70FFS107
      5305-00-432-4263MS51861-71FFS107
      5305-01-121-2696MS51861-72FF-S-107
      5305-01-628-9579MS51861-73
      5305-01-624-3950MS51861
      5305-00-147-3248MS51861-12CFFS107
      5305-00-782-4385MS51861-13CFF-S-107
      5305-00-163-6561MS51861-14CFFS107
      5305-00-147-3224MS51861-15CFFS107$0.28 2026-06
      5305-00-147-3225MS51861-16CFFS107
      5305-00-147-3226MS51861-17CFFS107
      5305-00-147-3222MS51861-1CFFS107
      5305-01-146-2533MS51861-1CFF-S-107

      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. 38 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.

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