The Washer,spring Tension, cataloged under National Stock Number 5310-00-752-7639, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-752-7639 |
| Primary Part Number | 7527639 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| 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 | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN |
| Material Thickness | 0.007 INCHES MINIMUM AND 0.009 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 1095 OVERALL |
| Hole Diameter | 0.266 INCHES MINIMUM AND 0.276 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 |
|---|---|
| 7527639 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 0-40996-131 PRIMARY | Amphenol Corp Div Amphenol Aerospace Operations (USA) |
NSN 5310-00-752-7639 is a Washer,spring Tension, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-752-7639 has 2 manufacturer part numbers on file: 7527639 (U S Army Tank Automotive Command Amsta-Im-Mm), 0-40996-131 (Amphenol Corp Div Amphenol Aerospace Operations).
Key specifications for 7527639: 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: 0.428 INCHES MINIMUM AND 0.448 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.