The Washer,spring Tension, cataloged under National Stock Number 5310-01-349-9660, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-349-9660 |
| Primary Part Number | 4M64CR5 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.612 INCHES MINIMUM AND 0.632 INCHES MAXIMUM IN |
| Material Thickness | 0.006 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 302 OVERALL |
| Hole Diameter | 0.326 INCHES MINIMUM AND 0.336 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 |
|---|---|
| 4M64CR5 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 5804-56-3P | 5/2 Secondary reference U.S. Government activity |
| 3502-18-4X-4802 | 3/9 Design control — primary reference Itw Shakeproof Automotive Products |
| 5804-56-2CRES | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 5804-56-2 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-349-9660 is a Washer,spring Tension, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-349-9660 has 1 manufacturer part number on file: 4M64CR5 (The Boeing Company Div Defense).
Key specifications for 4M64CR5: Overall Height: 0.083 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN; Hardness Rating: 39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM; Material Document and Classification: MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.612 INCHES MINIMUM AND 0.632 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.