The Screw,externally Relieved Body, cataloged under National Stock Number 5305-00-623-8280, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-623-8280 |
| Primary Part Number | 312414 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Head Height | 0.172 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN |
| Fastener Length | 0.816 INCHES MINIMUM AND 0.848 INCHES MAXIMUM IN |
| Thread Length | 0.188 INCHES MINIMUM IN |
| Material Document and Classification | ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.297 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 0.469 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | KNURLED NO. 1 |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.109 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.094 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 2 |
| Surface Treatment | CADMIUM OVERALL |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 1212 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.360 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 312414 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 312414 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
NSN 5305-00-623-8280 is a Screw,externally Relieved Body, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-623-8280 has 1 manufacturer part number on file: 312414 (Northrop Grumman Systems Corporation).
3 possible matches (shared part number, not a government interchangeability claim): 6125-01-106-1433, 5985-01-201-3916, 5331-01-319-2026. Verify interchangeability with system specifications before substitution.
Key specifications for 312414: Head Height: 0.172 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN; Fastener Length: 0.816 INCHES MINIMUM AND 0.848 INCHES MAXIMUM IN; Thread Length: 0.188 INCHES MINIMUM IN; Material Document and Classification: ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 19 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.