The Washer,recessed, cataloged under National Stock Number 5310-00-702-1298, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Defense Logistics Agency Dba Defense Supply Center Philadelphia. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-702-1298 |
| Primary Part Number | 00558 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Defense Logistics Agency Dba Defense Supply Center Philadelphia |
| Status | ACTIVE |
| Style Designator | RECESSED |
| Material Document and Classification | MIL-S-6050 COND F4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.420 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN |
| Material Thickness | 0.183 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN |
| Recess Diameter | 1.020 INCHES MINIMUM AND 1.040 INCHES MAXIMUM IN |
| Material | STEEL COMP 8630 OVERALL |
| Hole Diameter | 0.890 INCHES MINIMUM AND 0.901 INCHES MAXIMUM IN |
| Recess Angle | 88.0 DEGREES MINIMUM AND 92.0 DEGREES MAXIMUM |
| 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 |
|---|---|
| 00558 | Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA) |
| Reference | Meaning |
|---|---|
| 5310PL1336998 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 371120-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-702-1298 is a Washer,recessed, manufactured by Defense Logistics Agency Dba Defense Supply Center Philadelphia, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-702-1298 has 1 manufacturer part number on file: 00558 (Defense Logistics Agency Dba Defense Supply Center Philadelphia).
1 possible match (shared part number, not a government interchangeability claim): 7045-01-488-5093. Verify interchangeability with system specifications before substitution.
Key specifications for 00558: Style Designator: RECESSED; Material Document and Classification: MIL-S-6050 COND F4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.420 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN; Material Thickness: 0.183 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN. 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.