Cross reference · Howmet Fastening Systems · Close tolerance screw
HT8138 cross referenceHuck A146, Northrop GB510AE
HT8138 is a Howmet close tolerance screw series on 5 government stock numbers. Its closest equivalents are Huck A146, Northrop GB510AE. Each one is labeled with how strong the evidence is.
- Issued by Howmet Fastening Systems
- Item Close tolerance screw
- Stock numbers 5
- Equivalents 8
Equivalents in the government catalog
Catalog-only listings need engineering approval before you substitute.
Manufacturers
- A146HuckCatalog only, needs approvalon 2 of 5 stock numbers, 2 sizes
- BM19051HuckCatalog only, needs approvalon 2 of 5 stock numbers, 2 sizes
Standards
5 more on one stock number each: NAS1580A3H, NAS1580A3H13D, NAS1580A3H4D, NAS1580A3H5D, NAS1580A4H6D
- NAS1580A3HNASCatalog only, needs approvalon 1 of 5 stock numbers
- NAS1580A3H13DNASCatalog only, needs approvalon 1 of 5 stock numbers
- NAS1580A3H4DNASCatalog only, needs approvalon 1 of 5 stock numbers
- NAS1580A3H5DNASCatalog only, needs approvalon 1 of 5 stock numbers
- NAS1580A4H6DNASCatalog only, needs approvalon 1 of 5 stock numbers
Airframer and OEM drawings
- GB510AENorthrop GrummanCatalog only, needs approvalon 5 of 5 stock numbers, 5 sizes
Plus 1 reference number whose issuer SpecLok does not identify (distributors and catalog agencies are not named).
Get quotes for HT8138
Cited equivalents go on the request as acceptable alternates. Catalog-only listings do not.
Install tooling
SpecLok has no catalog family for HT8138. Tooling for the equivalents:
None of the equivalents is in the SpecLok catalog yet.
Sizes by maker
| NSN | HT8138 | A146 | NAS1580A3H | GB510AE | Last DLA price |
|---|---|---|---|---|---|
| 5305-01-130-9020 | HT8138-3-4 | A146-3-4 | NAS1580A3H4 | GB510AE3-4 | |
| 5305-01-044-0747 | HT8138-3-13T | GB510AE3-13T | |||
| 5305-00-170-2942 | HT8138-3-4T | GB510AE3-4T | |||
| 5305-00-090-4080 | HT8138-3-5T | GB510AE3-5T | |||
| 5305-01-061-7428 | HT8138-4-6T | A146-4-6T | GB510AE4-6T |
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 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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