The Washer,concave, cataloged under National Stock Number 5310-00-620-8215, 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 9 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-620-8215 |
| Primary Part Number | 00648-2 |
| Item Name | Washer,concave |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Defense Logistics Agency Dba Defense Supply Center Philadelphia |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 1 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Radius | 0.265 INCHES NOMINAL IN |
| Style Designator | CONCAVE |
| Material Document and Classification | ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A576 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.464 INCHES MINIMUM AND 0.474 INCHES MAXIMUM IN |
| Material Thickness | 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.325 INCHES MINIMUM AND 0.335 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 |
|---|---|
| 67992W428 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 00648-2 PRIMARY | Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA) |
| 9033693 | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 2935-04 | 5/9 Secondary reference Harvard Industries Inc |
| SME389203-87 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-00-620-8215 is a Washer,concave, manufactured by Defense Logistics Agency Dba Defense Supply Center Philadelphia, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-620-8215 has 3 manufacturer part numbers on file: 67992W428 (Sps Technologies, Llc Dba PB Fasteners), 00648-2 (Defense Logistics Agency Dba Defense Supply Center Philadelphia), 9033693 (Us Army Aviation and Missile Command).
3 possible matches (shared part number, not a government interchangeability claim): 5310-00-739-6583, 6510-01-276-6831, 5999-01-695-4994. Verify interchangeability with system specifications before substitution.
Key specifications for 00648-2: Surface Treatment Document and Classification: QQ-P-416,TY 1 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Radius: 0.265 INCHES NOMINAL IN; Style Designator: CONCAVE; Material Document and Classification: ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A576 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 9 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.