The Screw,machine, cataloged under National Stock Number 5305-00-074-3256, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Andrea Systems Llc. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-074-3256 |
| Primary Part Number | 816-18 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Andrea Systems Llc |
| Status | ACTIVE |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 0.375 INCHES NOMINAL IN |
| Thread Length | 0.375 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL CORROSION RESISTING |
| Internal Drive Style | SLOT |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.268 INCHES NOMINAL 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 |
|---|---|
| 816-18 PRIMARY | Andrea Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 816-18 | 3/9 Design control — primary reference Andrea Electronics Corporation |
NSN 5305-00-074-3256 is a Screw,machine, manufactured by Andrea Systems Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-074-3256 has 1 manufacturer part number on file: 816-18 (Andrea Systems Llc).
1 possible match (shared part number, not a government interchangeability claim): 6220-01-497-6883. Verify interchangeability with system specifications before substitution.
Key specifications for 816-18: Screw Surface Treatment: PASSIVATE; Fastener Length: 0.375 INCHES NOMINAL IN; Thread Length: 0.375 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.138 INCHES IN. 13 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.