Cross reference · Northrop Grumman · Close tolerance screw
GB510L cross referenceHi-Shear HT239PB, Huck A147, Howmet HT8043, NAS1581F3R
GB510L is a Northrop close tolerance screw series on 4 government stock numbers. Its closest equivalents are Hi-Shear HT239PB, Huck A147, Howmet HT8043, NAS1581F3R. Each one is labeled with how strong the evidence is.
- Issued by Northrop Grumman
- Item Close tolerance screw
- Stock numbers 4
- Equivalents 14
- DLA paid $0.14 to $0.17
Equivalents in the government catalog
Catalog-only listings need engineering approval before you substitute.
Manufacturers
- HT239PBHi-ShearCatalog only, needs approvalon 3 of 4 stock numbers, 3 sizes
- A147HuckCatalog only, needs approvalon 2 of 4 stock numbers, 2 sizes
- BM19025HuckCatalog only, needs approvalon 2 of 4 stock numbers, 2 sizes
- HT8043Howmet Fastening SystemsCatalog only, needs approvalon 2 of 4 stock numbers, 2 sizes
1 more on one stock number each: HT8043P
- HT8043PHowmet Fastening SystemsCatalog only, needs approvalon 1 of 4 stock numbers
Standards
- NAS1581F3RNASCatalog only, needs approvalon 2 of 4 stock numbers, 2 sizes
7 more on one stock number each: NAS1581A3R, NAS1581A3R3P, NAS1581A4H, NAS1581A5H, NAS1581A5H9T, NAS1581F4H, NAS1581F5H
- NAS1581A3RNASCatalog only, needs approvalon 1 of 4 stock numbers
- NAS1581A3R3PNASCatalog only, needs approvalon 1 of 4 stock numbers
- NAS1581A4HNASCatalog only, needs approvalon 1 of 4 stock numbers
- NAS1581A5HNASCatalog only, needs approvalon 1 of 4 stock numbers
- NAS1581A5H9TNASCatalog only, needs approvalon 1 of 4 stock numbers
- NAS1581F4HNASCatalog only, needs approvalon 1 of 4 stock numbers
- NAS1581F5HNASCatalog only, needs approvalon 1 of 4 stock numbers
Airframer and OEM drawings
1 more on one stock number each: R2950P
- R2950PLockheed MartinCatalog only, needs approvalon 1 of 4 stock numbers
Plus 1 reference number whose issuer SpecLok does not identify (distributors and catalog agencies are not named).
Get quotes for GB510L
Cited equivalents go on the request as acceptable alternates. Catalog-only listings do not.
Install tooling
SpecLok has no catalog family for GB510L. Tooling for the equivalents:
None of the equivalents is in the SpecLok catalog yet.
What the government paid
DLA awards on 2 of 4 stock numbers, 5 awards from 2023-06-08 to 2024-08-19.
Latest award per stock number: $0.14 to $0.17 each.
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
| NSN | GB510L | HT239PB | A147 | HT8043 | NAS1581F3R | R2950P | Last DLA price |
|---|---|---|---|---|---|---|---|
| 5305-00-980-5252 | GB510L3-3 | HT239PB3-3 | NAS1581F3R3 | R2950P3-3 | $0.14 2024-02 | ||
| 5305-01-176-7383 | GB510L3-4 | NAS1581F3R4 | $0.17 2024-08 | ||||
| 5305-01-043-7717 | GB510L4-14 | HT239PB4-14 | A147-4-14 | HT8043-4-14 | |||
| 5305-00-288-2457 | GB510L5-11 | HT239PB-5-11 | A147-5-11 | HT8043-5-11 |
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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