The Setscrew, cataloged under National Stock Number 5305-01-271-4344, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Fastener Innovation Technology, Inc. Dba F I T. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-271-4344 |
| Primary Part Number | FS2052-4 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Fastener Innovation Technology, Inc. Dba F I T |
| Status | ACTIVE |
| Fastener Length | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Material Document and Classification | ASTMA 582 ASSN STD 1ST MATERIAL RESPONSE OR ASTMA 581 ASSN STD 2ND MATERIAL RESPONSE OR ASTMA 581 ASSN STD 3RD MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | POINTLESS |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL CORROSION RESISTING OR STEEL COMP 303 OR STEEL COMP 303SE OVERALL |
| Thread Series Designator | UNS |
| 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 |
|---|---|
| FS2052-4 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 808569-4 PRIMARY | Kimro Products (USA) |
| Reference | Meaning |
|---|---|
| APR429-4 | 3/2 Design control — primary reference U.S. Government activity |
| 965808-4 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5305-01-271-4344 is a Setscrew, manufactured by Fastener Innovation Technology, Inc. Dba F I T, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-271-4344 has 2 manufacturer part numbers on file: FS2052-4 (Fastener Innovation Technology, Inc. Dba F I T), 808569-4 (Kimro Products).
Key specifications for FS2052-4: Fastener Length: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN; Material Document and Classification: ASTMA 582 ASSN STD 1ST MATERIAL RESPONSE OR ASTMA 581 ASSN STD 2ND MATERIAL RESPONSE OR ASTMA 581 ASSN STD 3RD MATERIAL RESPONSE OVERALL. 14 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.