The Screw,machine, cataloged under National Stock Number 5305-01-669-6439, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-669-6439 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Screw Surface Treatment | CADMIUM OR CHROMATE |
| Fastener Length | 1.250 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN |
| Screw Material Document and Classification | AMS-S-6758 ASSN STD 1ST MATERIAL RESPONSE OR AMS6415 OR AMS6484 ASSN STD 2ND MATERIAL RESPONSE OR AMS6322,AMS6325,OR AMS6327 ASSN STD 3RD MATERIAL RESPONSE |
| Thread Length | 1.250 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.1640 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Screw Material | STEEL COMP 4130 OR STEEL COMP 4340 OR STEEL COMP 8740 |
| Minimum Tensile Strength | 1740 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE II |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNJC |
| Head Diameter | 0.282 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | MS-QQ-P-416, TYPE II, CLASS 2 ASSN STD 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 |
| Reference | Meaning |
|---|---|
| NAS514P832-21P | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-669-6439 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-669-6439: Screw Surface Treatment: CADMIUM OR CHROMATE; Fastener Length: 1.250 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN; Screw Material Document and Classification: AMS-S-6758 ASSN STD 1ST MATERIAL RESPONSE OR AMS6415 OR AMS6484 ASSN STD 2ND MATERIAL RESPONSE OR AMS6322,AMS6325,OR AMS6327 ASSN STD 3RD MATERIAL RESPONSE; Thread Length: 1.250 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN. 17 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.