The Washer,flat, cataloged under National Stock Number 5310-01-202-1620, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Metric and Multistandard Components Corp. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Washer,flat |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Century Fasteners Corp. Dba Century Fasteners Corp (CAGE 06641); Metric and Multistandard Components Corp (CAGE 15526); Sps Technologies, Llc Dba PB Fasteners (CAGE 56878) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-202-1620 |
| Primary Part Number | 5517572-002 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Metric and Multistandard Components Corp |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 5517572-002 | Century Fasteners Corp. Dba Century Fasteners Corp (USA) |
| 5517572-002 PRIMARY | Metric and Multistandard Components Corp (USA) |
| 5517572-002 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 5517572-002 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 5517572-002 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
| 2108-06421 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 5517572 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 5310PL0830400 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5310-01-202-1620 is a Washer,flat, manufactured by Metric and Multistandard Components Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-202-1620 has 3 manufacturer part numbers on file: 5517572-002 (Century Fasteners Corp. Dba Century Fasteners Corp), 5517572-002 (Metric and Multistandard Components Corp), 5517572-002 (Sps Technologies, Llc Dba PB Fasteners).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-671-4983. Verify interchangeability with system specifications before substitution.
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.