The Screw,machine, cataloged under National Stock Number 5305-01-656-0449, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-656-0449 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Bearing Surface of Head Surface Treatment Document and Classification | AMS-QQ-P-416, TYPE II, CLASS 2 ASSN STD SINGLE TREATMENT RESPONSE |
| Screw Surface Treatment | CADMIUM |
| Fastener Length | 0.573 INCHES MINIMUM AND 0.603 INCHES MAXIMUM IN |
| Thread Length | 0.338 INCHES NOMINAL IN |
| Shank Surface Treatment | CADMIUM |
| Bearing Surface of Head Surface Treatment | CADMIUM |
| Nominal Thread Diameter | 0.1900 INCHES IN |
| Head Surface Treatment | CADMIUM |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Head Surface Treatment Document and Classification | AMS-QQ-P-416, TYPE II, CLASS 2 ASSN STD SINGLE TREATMENT RESPONSE |
| Screw Material | STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP E4340 OR STEEL COMP 8740 |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Shank Surface Treatment Document and Classification | AMS-QQ-P-416, TYPE II, CLASS 2 ASSN STD SINGLE TREATMENT RESPONSE |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.339 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | AMS-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 |
|---|---|
| NAS1790-3-4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-656-0449 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-656-0449: Bearing Surface of Head Surface Treatment Document and Classification: AMS-QQ-P-416, TYPE II, CLASS 2 ASSN STD SINGLE TREATMENT RESPONSE; Screw Surface Treatment: CADMIUM; Fastener Length: 0.573 INCHES MINIMUM AND 0.603 INCHES MAXIMUM IN; Thread Length: 0.338 INCHES NOMINAL IN. 20 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.