The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-600-2455, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Bgm Fastener Co Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-600-2455 |
| Primary Part Number | B1821AH025C100C |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Bgm Fastener Co Inc |
| Status | ACTIVE |
| Head Height | 0.156 INCHES NOMINAL IN |
| Fastener Length | 1.000 INCHES NOMINAL IN |
| Thread Length | 0.750 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.438 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL 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 |
|---|---|
| B1821AH025C100C | Parttarget Inc. (USA) |
| B1821AH025C100C PRIMARY | Bgm Fastener Co Inc (USA) |
| B1821AH025C100C | Aerobase Group Inc (USA) |
| Reference | Meaning |
|---|---|
| B1821AH025C100C | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-600-2455 is a Screw,cap,hexagon Head, manufactured by Bgm Fastener Co Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-600-2455 has 3 manufacturer part numbers on file: B1821AH025C100C (Parttarget Inc.), B1821AH025C100C (Bgm Fastener Co Inc), B1821AH025C100C (Aerobase Group Inc).
Key specifications for B1821AH025C100C: Head Height: 0.156 INCHES NOMINAL IN; Fastener Length: 1.000 INCHES NOMINAL IN; Thread Length: 0.750 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 INCHES IN. 12 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.