The Washer,concave, cataloged under National Stock Number 5310-01-419-6058, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bath Iron Works 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-419-6058 |
| Primary Part Number | 8100-1253-0238 PIECE 99 |
| Item Name | Washer,concave |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bath Iron Works Corporation |
| Status | ACTIVE |
| Radius | 0.450 INCHES NOMINAL IN |
| Style Designator | CONCAVE |
| Material Document and Classification | ASTM B21 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.688 INCHES NOMINAL IN |
| Recess Depth | 0.031 INCHES NOMINAL IN |
| Material Thickness | 0.094 INCHES NOMINAL IN |
| Material | COPPER ALLOY OVERALL |
| Hole Diameter | 0.372 INCHES MINIMUM AND 0.378 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 |
|---|---|
| 8100-1253-0238 PIECE 99 PRIMARY | Bath Iron Works Corporation (USA) |
| Reference | Meaning |
|---|---|
| 43013-068 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-01-419-6058 is a Washer,concave, manufactured by Bath Iron Works Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-419-6058 has 1 manufacturer part number on file: 8100-1253-0238 PIECE 99 (Bath Iron Works Corporation).
Key specifications for 8100-1253-0238 PIECE 99: Radius: 0.450 INCHES NOMINAL IN; Style Designator: CONCAVE; Material Document and Classification: ASTM B21 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.688 INCHES NOMINAL 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.