The Screw,assembled Washer, cataloged under National Stock Number 5305-01-028-3259, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Dupree, Inc Dba Stake Fastener Co Div Stake Fastener Co.. Government technical data includes 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-028-3259 |
| Primary Part Number | SFSW4C5CPG02NA |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Dupree, Inc Dba Stake Fastener Co Div Stake Fastener Co. |
| Status | ACTIVE |
| Fastener Length | 0.313 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Primary Washer Outside Diameter | 0.312 INCHES NOMINAL IN |
| Thread Length | 0.313 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-763 FED SPEC 1ST MATERIAL RESPONSE OR MIL-M-20693 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | FILLISTER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL CORROSION RESISTING OR PLASTIC POLYAMIDE NYLON OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Washer Quantity | 1 |
| 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 |
|---|---|
| SFSW4C5CPG02NA PRIMARY | Dupree, Inc Dba Stake Fastener Co Div Stake Fastener Co. (USA) |
NSN 5305-01-028-3259 is a Screw,assembled Washer, manufactured by Dupree, Inc Dba Stake Fastener Co Div Stake Fastener Co., classified under FSC 5305, Screws. Status: active.
NSN 5305-01-028-3259 has 1 manufacturer part number on file: SFSW4C5CPG02NA (Dupree, Inc Dba Stake Fastener Co Div Stake Fastener Co.).
Key specifications for SFSW4C5CPG02NA: Fastener Length: 0.313 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Primary Washer Outside Diameter: 0.312 INCHES NOMINAL IN; Thread Length: 0.313 INCHES NOMINAL IN. 15 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.