Cross reference · Hartwell · Quick release pin

LH4S cross referenceMS17990

LH4S is a Hartwell quick release pin series on 19 government stock numbers. Its closest equivalents are MS17990. Each one is labeled with how strong the evidence is.

Equivalents in the government catalog

19 stock numbers

Catalog-only listings need engineering approval before you substitute.

Manufacturers

    12 more on one stock number each: A415MARK, A419MARK, B40287RN, B413RN, BLC4L21N, BLC4L21NM, BLC4L24N, BLC4L24NM, BLC4R10N, BLC4R21N, BLP41300, BLS4L07N
    • A415MARKAvibankCatalog only, needs approvalon 1 of 19 stock numbers
    • A419MARKAvibankCatalog only, needs approvalon 1 of 19 stock numbers
    • B40287RNAvibankCatalog only, needs approvalon 1 of 19 stock numbers
    • B413RNAvibankCatalog only, needs approvalon 1 of 19 stock numbers
    • BLC4L21NAvibankCatalog only, needs approvalon 1 of 19 stock numbers
    • BLC4L21NMAvibankCatalog only, needs approvalon 1 of 19 stock numbers
    • BLC4L24NAvibankCatalog only, needs approvalon 1 of 19 stock numbers
    • BLC4L24NMAvibankCatalog only, needs approvalon 1 of 19 stock numbers
    • BLC4R10NAvibankCatalog only, needs approvalon 1 of 19 stock numbers
    • BLC4R21NAvibankCatalog only, needs approvalon 1 of 19 stock numbers
    • BLP41300AvibankCatalog only, needs approvalon 1 of 19 stock numbers
    • BLS4L07NAvibankCatalog only, needs approvalon 1 of 19 stock numbers

    Standards

    • MS17990MSCatalog only, needs approvalon 16 of 19 stock numbers, 15 sizes
    • MS17990CMSCatalog only, needs approvalon 3 of 19 stock numbers, 3 sizes
    • NAS1354S7SNASCatalog only, needs approvalon 2 of 19 stock numbers, 2 sizes
    • MS17989MSCatalog only, needs approvalon 2 of 19 stock numbers, 2 sizes
    • MS17989CMSCatalog only, needs approvalon 2 of 19 stock numbers, 2 sizes
    1 more on one stock number each: NAS1354S7S21D
    • NAS1354S7S21DNASCatalog only, needs approvalon 1 of 19 stock numbers

    Airframer and OEM drawings

      2 more on one stock number each: 347C411H, BACP18P405RD
      • 347C411HNorthrop GrummanCatalog only, needs approvalon 1 of 19 stock numbers
      • BACP18P405RDBoeingCatalog only, needs approvalon 1 of 19 stock numbers

      Plus 9 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).

      Get quotes for LH4S

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

      Install tooling

      SpecLok has no catalog family for LH4S. Tooling for the equivalents:

      None of the equivalents is in the SpecLok catalog yet.

      What the government paid

      DLA awards on 2 of 19 stock numbers, 9 awards from 2023-05-03 to 2026-02-19.

      Latest award per stock number: $12.86 to $287.00 each.

      DLA production lead time: 79 to 232 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

      19 stock numbers
      Part numbers DLA FLIS lists for LH4S and its equivalents, by stock number
      NSNLH4SMS17990NAS1354S7SLast DLA price
      5315-00-928-2494LH4S-L-07M
      5315-01-068-1976LH4S-L-24M
      5315-00-419-0758LH4S-L-28MMS17990-421
      5315-00-928-2483LH4S-L-36M
      5315-00-205-5546LH4S-R-03MMS17990-403
      5315-00-834-0134LH4S-R-04MMS17990-404
      5315-00-655-7853LH4S-R-05MMS17990-405
      5315-00-159-3989LH4S-R-06MMS17990-406NAS1354S7S06$287.00 2025-09
      5315-00-890-0103LH4S-R-09MMS17990-409NAS1354S7S09
      5315-00-938-4070LH4S-R-10MMS17990-410$12.86 2026-02
      5315-00-158-3813LH4S-R-12MMS17990-412
      5315-00-658-5313LH4S-R-13MMS17990-413
      5315-00-200-3713LH4S-R-15MMS17990-415
      5315-00-151-9382LH4S-R-16MMS17990-416
      5315-00-417-8559LH4S-R-17MMS17990-417
      Show 4 more sizes
      More sizes
      NSNLH4SMS17990NAS1354S7SLast DLA price
      5315-00-290-4687LH4S-R-19MMS17990-419
      5315-01-040-4466LH4S-R-20MMS17990-420
      5315-00-200-3708LH4S-R-21MMS17990-421
      5315-01-367-6431LH4S-R-26MMS17990-426

      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 5315 Nails, machine keys and pins. Issuer names are SpecLok's reading of the filing CAGE code; distributors are not named. Compiled 2026-10-02.

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