The Screw,machine, cataloged under National Stock Number 5305-01-475-4505, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-475-4505 |
| Primary Part Number | 1611203-63 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Locking Feature Material Document and Classification | MIL-F-18240 MIL STD 1ST MATERIAL RESPONSE |
| Screw Surface Treatment | ZINC |
| Fastener Length | 0.875 INCHES MAXIMUM IN |
| Screw Material Document and Classification | FF-S-86,TYPE4 FED SPEC 1ST MATERIAL RESPONSE |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Locking Feature | PATCH |
| Screw Material | STEEL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Screw Surface Treatment Document and Classification | QQ-Z-325,TYPE2,CLASS3 FED SPEC 1ST 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 |
|---|---|
| 1611203-63 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 1611203-63 | 3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 1611203-63 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5305-01-475-4505 is a Screw,machine, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-475-4505 has 1 manufacturer part number on file: 1611203-63 (Naval Sea Systems Command).
Key specifications for 1611203-63: Locking Feature Material Document and Classification: MIL-F-18240 MIL STD 1ST MATERIAL RESPONSE; Screw Surface Treatment: ZINC; Fastener Length: 0.875 INCHES MAXIMUM IN; Screw Material Document and Classification: FF-S-86,TYPE4 FED SPEC 1ST MATERIAL RESPONSE. 12 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.