The Washer,spring Tension, cataloged under National Stock Number 5310-00-752-7640, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Amphenol Corp Div Amphenol Aerospace Operations. 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-752-7640 |
| Primary Part Number | 10-40996-171 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Amphenol Corp Div Amphenol Aerospace Operations |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS 5121 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.646 INCHES MINIMUM AND 0.666 INCHES MAXIMUM IN |
| Material Thickness | 0.019 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 1095 OVERALL |
| Hole Diameter | 0.506 INCHES MINIMUM AND 0.526 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 |
|---|---|
| 10-40996-171 PRIMARY | Amphenol Corp Div Amphenol Aerospace Operations (USA) |
| Reference | Meaning |
|---|---|
| 2963046 | 5/9 Secondary reference General Motors Corp Packard Electric Div |
| 0-40996-171 | 5/9 Secondary reference U.S. Government activity |
| 2963046 | 5/9 Secondary reference General Motors Corp |
| 0-40996-171 | 5/9 Secondary reference Amphenol Corp Div Amphenol Aerospace Operations |
| 7527640 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5310-00-752-7640 is a Washer,spring Tension, manufactured by Amphenol Corp Div Amphenol Aerospace Operations, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-752-7640 has 1 manufacturer part number on file: 10-40996-171 (Amphenol Corp Div Amphenol Aerospace Operations).
Key specifications for 10-40996-171: Overall Height: 0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: AMS 5121 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.646 INCHES MINIMUM AND 0.666 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.