The Screw,shoulder, cataloged under National Stock Number 5305-00-685-3243, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-685-3243 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.080 INCHES NOMINAL IN |
| Fastener Length | 1.000 INCHES NOMINAL IN |
| Shoulder Length | 0.188 INCHES NOMINAL FIRST SHOULDER IN |
| Surface Treatment Document and Classification | LAC PROCESS FSC-98897 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.812 INCHES MINIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FILLISTER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | LACQUER OVERALL |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 8630 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.875 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 361750-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-685-3243 is a Screw,shoulder, classified under FSC 5305, Screws. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 2995-00-891-8860, 5355-01-127-8600. Verify interchangeability with system specifications before substitution.
Key specifications for 5305-00-685-3243: Head Height: 0.080 INCHES NOMINAL IN; Fastener Length: 1.000 INCHES NOMINAL IN; Shoulder Length: 0.188 INCHES NOMINAL FIRST SHOULDER IN; Surface Treatment Document and Classification: LAC PROCESS FSC-98897 MFR REF SINGLE TREATMENT RESPONSE OVERALL. 17 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.