The Screw,assembled Washer, cataloged under National Stock Number 5305-01-309-8540, 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 21 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 | 5305-01-309-8540 |
| Primary Part Number | SFSW6C5DL26GY |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Dupree, Inc Dba Stake Fastener Co Div Stake Fastener Co. |
| Status | ACTIVE |
| Head Height | 0.092 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN |
| Fastener Length | 0.282 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| Primary Washer Outside Diameter | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Thread Length | 0.220 INCHES MINIMUM IN |
| Material Document and Classification | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE FASTENER |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | PAN |
| Primary Washer Style | FLAT |
| Thread Direction | RIGHT-HAND |
| Primary Washer Material Thickness | 0.035 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN |
| Color | GRAY/GREY OVERALL |
| Surface Treatment | CADMIUM AND CHROMATE FASTENER |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 8740 FASTENER |
| Material | PLASTIC POLYAMIDE NYLON PRIMARY WASHER |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Washer Quantity | 1 |
| Head Diameter | 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| 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 |
|---|---|
| SFSW6C5DL26GY PRIMARY | Dupree, Inc Dba Stake Fastener Co Div Stake Fastener Co. (USA) |
NSN 5305-01-309-8540 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 5305-01-309-8540 has 1 manufacturer part number on file: SFSW6C5DL26GY (Dupree, Inc Dba Stake Fastener Co Div Stake Fastener Co.).
Key specifications for SFSW6C5DL26GY: Head Height: 0.092 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN; Fastener Length: 0.282 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE FASTENER; Primary Washer Outside Diameter: 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN. 21 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.