The Washer,spring Tension, cataloged under National Stock Number 5310-01-628-4316, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is S-Tec Corporation. Government technical data includes 8 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 | 5310-01-628-4316 |
| Primary Part Number | 1253 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | S-Tec Corporation |
| Status | ACTIVE |
| Surface Treatment Document and Classification | SPEC 0405 MFR REF 1ST TREATMENT RESPONSE OR ASTM B633,TY II,YELLOW,SC 3 ASSN STD 2ND TREATMENT RESPONSE OVERALL |
| Style Designator | SPRING TENSION |
| Material Document and Classification | BERYLLUM COPPER ALLOY 25,1/4 HARD MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.125 INCHES NOMINAL IN |
| Material Thickness | 0.032 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND ZINC OVERALL |
| Material | COPPER ALLOY OVERALL |
| Hole Diameter | 0.320 INCHES MINIMUM AND 0.330 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 |
|---|---|
| 1253 PRIMARY | S-Tec Corporation (USA) |
NSN 5310-01-628-4316 is a Washer,spring Tension, manufactured by S-Tec Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-628-4316 has 1 manufacturer part number on file: 1253 (S-Tec Corporation).
Key specifications for 1253: Overall Height: 0.1563 INCHES NOMINAL IN; Surface Treatment Document and Classification: SPEC 0405 MFR REF 1ST TREATMENT RESPONSE OR ASTM B633,TY II,YELLOW,SC 3 ASSN STD 2ND TREATMENT RESPONSE OVERALL; Style Designator: SPRING TENSION; Material Document and Classification: BERYLLUM COPPER ALLOY 25,1/4 HARD MFR REF SINGLE MATERIAL RESPONSE OVERALL. 8 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.