The Setscrew, cataloged under National Stock Number 5305-01-653-1557, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Bloom Manufacturing, Llc Dba Bloom Inc. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-653-1557 |
| Primary Part Number | W-258 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Bloom Manufacturing, Llc Dba Bloom Inc |
| Status | ACTIVE |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Thread Direction | RIGHT-HAND |
| 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 |
|---|---|
| W-258 PRIMARY | Bloom Manufacturing, Llc Dba Bloom Inc (USA) |
| Reference | Meaning |
|---|---|
| 0-C-S8-20-LH-GALV.XLS | D/9 Drawing number reference only Bloom Manufacturing, Llc Dba Bloom Inc |
| 0-C-S8-20-RH-GALV | D/9 Drawing number reference only Bloom Manufacturing, Llc Dba Bloom Inc |
NSN 5305-01-653-1557 is a Setscrew, manufactured by Bloom Manufacturing, Llc Dba Bloom Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-653-1557 has 1 manufacturer part number on file: W-258 (Bloom Manufacturing, Llc Dba Bloom Inc).
Key specifications for W-258: Fastener Length: 0.500 INCHES NOMINAL IN; Nominal Thread Diameter: 0.375 INCHES IN; Thread Direction: RIGHT-HAND; Special Features: SOCKET HEAD. 3 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.