The Screw,machine, cataloged under National Stock Number 5305-01-377-6223, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is General Electric Company Dba Ge. Government technical data includes 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-377-6223 |
| Primary Part Number | 577A159P1 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | General Electric Company Dba Ge |
| Status | ACTIVE |
| Screw Surface Treatment | ZINC |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Screw Material Document and Classification | B4B2, CAGE 02982 MFR REF SINGLE MATERIAL RESPONSE |
| Thread Length | 0.390 INCHES MINIMUM AND 0.403 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL |
| Internal Drive Style | SLOT |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.477 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | F70B4A, CAGE 02982 MFR REF SINGLE TREATMENT RESPONSE |
| 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 |
|---|---|
| 577A159P1 PRIMARY | General Electric Company Dba Ge (USA) |
NSN 5305-01-377-6223 is a Screw,machine, manufactured by General Electric Company Dba Ge, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-377-6223 has 1 manufacturer part number on file: 577A159P1 (General Electric Company Dba Ge).
Key specifications for 577A159P1: Screw Surface Treatment: ZINC; Fastener Length: 0.500 INCHES NOMINAL IN; Screw Material Document and Classification: B4B2, CAGE 02982 MFR REF SINGLE MATERIAL RESPONSE; Thread Length: 0.390 INCHES MINIMUM AND 0.403 INCHES MAXIMUM IN. 15 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.