The Washer,spring Tension, cataloged under National Stock Number 5310-01-027-2017, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-027-2017 |
| Primary Part Number | ST3M679W4 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Style Designator | SPRING TENSION |
| Material Document and Classification | MIL-S-5059,COND A MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059,COND A MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-5059,COND A MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-5059,COND A MIL SPEC 4TH MATERIAL RESPONSE OR ASTM A582 ASSN STD 5TH MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN |
| Material Thickness | 0.032 INCHES MINIMUM AND 0.032 INCHES MINIMUM AND 0.038 INCHES MAXIMUM0.038 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 316 OR STEEL OVERALL |
| Hole Diameter | 0.245 INCHES MINIMUM AND 0.245 INCHES MINIMUM AND 0.251 INCHES MAXIMUM0.251 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 |
|---|---|
| ST3M679W4 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| ST3M679W4 | 5/2 Secondary reference U.S. Government activity |
| ST3M679W4 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-027-2017 is a Washer,spring Tension, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-027-2017 has 1 manufacturer part number on file: ST3M679W4 (The Boeing Company Div Defense).
Key specifications for ST3M679W4: Style Designator: SPRING TENSION; Material Document and Classification: MIL-S-5059,COND A MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059,COND A MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-5059,COND A MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-5059,COND A MIL SPEC 4TH MATERIAL RESPONSE OR ASTM A582 ASSN STD 5TH MATERIAL RESPONSE OVERALL; Outside Diameter: 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN; Material Thickness: 0.032 INCHES MINIMUM AND 0.032 INCHES MINIMUM AND 0.038 INCHES MAXIMUM0.038 INCHES MAXIMUM IN. 7 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.