The Washer,spring Tension, cataloged under National Stock Number 5310-00-209-5548, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Elsag Bailey Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-209-5548 |
| Primary Part Number | 532172A4 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Elsag Bailey Inc |
| Status | ACTIVE |
| Style Designator | SPRING TENSION |
| Material Document and Classification | ASTM A576 ASSN STD 1ST MATERIAL RESPONSE OR AISI ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.406 INCHES NOMINAL IN |
| Material Thickness | 0.014 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN |
| Surface Treatment | OXIDE FILM OVERALL |
| Material | STEEL COMP 1060 OR STEEL COMP 1065 OVERALL |
| Hole Diameter | 0.262 INCHES MINIMUM AND 0.270 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 |
|---|---|
| 532172A4 PRIMARY | Elsag Bailey Inc (USA) |
| Reference | Meaning |
|---|---|
| 2389207A1 | 5/9 Secondary reference Peerless Nuclear Corp |
NSN 5310-00-209-5548 is a Washer,spring Tension, manufactured by Elsag Bailey Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-209-5548 has 1 manufacturer part number on file: 532172A4 (Elsag Bailey Inc).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-276-5700. Verify interchangeability with system specifications before substitution.
Key specifications for 532172A4: Overall Height: 0.051 INCHES MINIMUM AND 0.071 INCHES MAXIMUM IN; Style Designator: SPRING TENSION; Material Document and Classification: ASTM A576 ASSN STD 1ST MATERIAL RESPONSE OR AISI ASSN STD 2ND MATERIAL RESPONSE OVERALL; Outside Diameter: 0.406 INCHES NOMINAL 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.