The Screw,machine, cataloged under National Stock Number 5305-01-178-5666, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Manassas. 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 | 5305-01-178-5666 |
| Primary Part Number | 2846057-2 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lockheed Martin Corporation Div Rms - Manassas |
| Status | ACTIVE |
| Head Height | 0.057 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 0.880 INCHES NOMINAL IN |
| Screw Material Document and Classification | QQ-S-761 FED SPEC SINGLE MATERIAL RESPONSE |
| Thread Length | 0.500 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL CORROSION RESISTING |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-35 FED SPEC 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 |
|---|---|
| 2846057-2 PRIMARY | Lockheed Martin Corporation Div Rms - Manassas (USA) |
NSN 5305-01-178-5666 is a Screw,machine, manufactured by Lockheed Martin Corporation Div Rms - Manassas, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-178-5666 has 1 manufacturer part number on file: 2846057-2 (Lockheed Martin Corporation Div Rms - Manassas).
Key specifications for 2846057-2: Head Height: 0.057 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN; Screw Surface Treatment: PASSIVATE; Fastener Length: 0.880 INCHES NOMINAL IN; Screw Material Document and Classification: QQ-S-761 FED SPEC SINGLE MATERIAL RESPONSE. 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.