Cross reference · Howmet Fastening Systems · Plate self-locking nut
MK4001 cross referenceSPS MA12740E
MK4001 is a Howmet plate self-locking nut series on 5 government stock numbers. Its closest equivalents are SPS MA12740E. Each one is labeled with how strong the evidence is.
- Issued by Howmet Fastening Systems
- Item Plate self-locking nut
- Stock numbers 5
- Equivalents 16
Equivalents in the government catalog
Catalog-only listings need engineering approval before you substitute.
Manufacturers
- MA12740ESPS TechnologiesCatalog only, needs approvalon 2 of 5 stock numbers, 2 sizes
10 more on one stock number each: 109A, 109A9209M, M12740E02BC, M1274E048BC, MT13C1032BCM, MT13C428M, MT13C428PWBM, NS103200SE, RMLHTA575M2860P, T8083C
- 109AESNACatalog only, needs approvalon 1 of 5 stock numbers
- 109A9209MESNACatalog only, needs approvalon 1 of 5 stock numbers
- M12740E02BCSPS TechnologiesCatalog only, needs approvalon 1 of 5 stock numbers
- M1274E048BCSPS TechnologiesCatalog only, needs approvalon 1 of 5 stock numbers
- MT13C1032BCMCherry AerospaceCatalog only, needs approvalon 1 of 5 stock numbers
- MT13C428MCherry AerospaceCatalog only, needs approvalon 1 of 5 stock numbers
- MT13C428PWBMCherry AerospaceCatalog only, needs approvalon 1 of 5 stock numbers
- NS103200SESPS TechnologiesCatalog only, needs approvalon 1 of 5 stock numbers
- RMLHTA575M2860PESNACatalog only, needs approvalon 1 of 5 stock numbers
- T8083CCherry AerospaceCatalog only, needs approvalon 1 of 5 stock numbers
Standards
4 more on one stock number each: NAS1067C3M, MS21087L, MS21087L3K, MS21087L4W
- NAS1067C3MNASCatalog only, needs approvalon 1 of 5 stock numbers
- MS21087LMSCatalog only, needs approvalon 1 of 5 stock numbers
- MS21087L3KMSCatalog only, needs approvalon 1 of 5 stock numbers
- MS21087L4WMSCatalog only, needs approvalon 1 of 5 stock numbers
Airframer and OEM drawings
1 more on one stock number each: BACN10JP5DCM
- BACN10JP5DCMBoeingCatalog only, needs approvalon 1 of 5 stock numbers
Plus 4 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).
Get quotes for MK4001
Cited equivalents go on the request as acceptable alternates. Catalog-only listings do not.
Install tooling
SpecLok has no catalog family for MK4001. Tooling for the equivalents:
None of the equivalents is in the SpecLok catalog yet.
Sizes by maker
| NSN | MK4001 | MA12740E | 109A | MT13C1032BCM | NAS1067C3M | MS21087L | Last DLA price |
|---|---|---|---|---|---|---|---|
| 5310-00-735-7625 | MK4001-3 | NAS1067C3M | |||||
| 5310-00-512-5126 | MK4001-4 | MA12740E-048 | MS21087L4 | ||||
| 5310-00-508-5089 | MK4001-3BC | MT13C1032BCM | |||||
| 5310-01-033-2674 | MK4001-4P | MA12740E-048PW | |||||
| 5310-00-480-1926 | MK4001-5BAC | 109A920 |
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 5310 Nuts and washers. Issuer names are SpecLok's reading of the filing CAGE code; distributors are not named. Compiled 2026-10-02.
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