The Screw,machine, cataloged under National Stock Number 5305-00-019-1646, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Army Weapons Command Attn Amswe-Ree-S. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5305-00-019-1646 |
| Primary Part Number | 191646 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Army Weapons Command Attn Amswe-Ree-S |
| Status | ACTIVE |
| Screw Surface Treatment | CADMIUM OR ZINC |
| Fastener Length | 0.562 INCHES NOMINAL IN |
| Screw Material Document and Classification | SAE ASSN STD ALL MATERIAL RESPONSES |
| Thread Length | 0.500 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Countersink Angle | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.244 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 3 FED SPEC 2ND 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 |
|---|---|
| 191646 | Army Weapons Command Attn Amswe-Ree-S (USA) |
| Reference | Meaning |
|---|---|
| FFS92TYPE1STYLE2S | 4/1 Identification reference U.S. Government activity |
NSN 5305-00-019-1646 is a Screw,machine, manufactured by Army Weapons Command Attn Amswe-Ree-S, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-019-1646 has 1 manufacturer part number on file: 191646 (Army Weapons Command Attn Amswe-Ree-S).
1 possible match (shared part number, not a government interchangeability claim): 4310-01-079-3319. Verify interchangeability with system specifications before substitution.
Key specifications for 191646: Screw Surface Treatment: CADMIUM OR ZINC; Fastener Length: 0.562 INCHES NOMINAL IN; Screw Material Document and Classification: SAE ASSN STD ALL MATERIAL RESPONSES; Thread Length: 0.500 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN. 15 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.