The Screw,shoulder, cataloged under National Stock Number 5305-01-271-5830, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Babcock & Wilcox Co. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-271-5830 |
| Primary Part Number | 1003876 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Babcock & Wilcox Co |
| Status | ACTIVE |
| Fastener Length | 0.625 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Material | STEEL COMP 4140 OVERALL |
| 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 |
|---|---|
| 1003876 PRIMARY | Babcock & Wilcox Co (USA) |
| Reference | Meaning |
|---|---|
| 1003876 | 3/9 Design control — primary reference The Babcock & Wilcox Company Dba B & W Service Co Div B&w Service Company |
| MX-261193-3 PIECE 100 | 5/9 Secondary reference The Babcock & Wilcox Company Dba B & W Service Co Div B&w Service Company |
NSN 5305-01-271-5830 is a Screw,shoulder, manufactured by Babcock & Wilcox Co, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-271-5830 has 1 manufacturer part number on file: 1003876 (Babcock & Wilcox Co).
Key specifications for 1003876: Fastener Length: 0.625 INCHES NOMINAL IN; Shoulder Shape: ROUND FIRST SHOULDER; Nominal Thread Diameter: 0.500 INCHES IN; Thread Direction: RIGHT-HAND. 6 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.