The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-421-2015, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Aqua-Chem, Inc.. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-421-2015 |
| Primary Part Number | 649-D-7546 ITEM 10 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Aqua-Chem, Inc. |
| Status | ACTIVE |
| Head Height | 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN |
| Fastener Length | 1.500 INCHES NOMINAL IN |
| Thread Length | 1.250 INCHES NOMINAL IN |
| Material Document and Classification | ASTM B98 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 13 |
| Material | COPPER ALLOY 651 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 868-07518-000 | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| 868-7518 | Aqua-Chem, Inc. (USA) |
| 649-D-7546 ITEM 10 PRIMARY | Aqua-Chem, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 868-7518 | C/1 Advisory reference — outside the item-of-supply concept Aqua-Chem, Inc. Dba Aqua-Chem Inc |
NSN 5305-01-421-2015 is a Screw,cap,hexagon Head, manufactured by Aqua-Chem, Inc., classified under FSC 5305, Screws. Status: active.
NSN 5305-01-421-2015 has 3 manufacturer part numbers on file: 868-07518-000 (Aqua-Chem, Inc. Dba Aqua-Chem Inc), 868-7518 (Aqua-Chem, Inc.), 649-D-7546 ITEM 10 (Aqua-Chem, Inc.).
Key specifications for 649-D-7546 ITEM 10: Head Height: 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN; Fastener Length: 1.500 INCHES NOMINAL IN; Thread Length: 1.250 INCHES NOMINAL IN; Material Document and Classification: ASTM B98 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 13 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.