The Washer,lock, cataloged under National Stock Number 5310-01-648-0581, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Tate Andale, Llc. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-648-0581 |
| Primary Part Number | 644500100011910 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Tate Andale, Llc |
| Status | ACTIVE |
| Outside Diameter | 0.500 INCHES NOMINAL IN |
| Material Thickness | 0.063 INCHES NOMINAL 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 |
|---|---|
| 644500100011910 PRIMARY | Tate Andale, Llc (USA) |
| Reference | Meaning |
|---|---|
| N5738 | D/9 Drawing number reference only Tate Andale, Llc |
| N5738PCNO122 | 3/9 Design control — primary reference Tate Andale, Llc |
NSN 5310-01-648-0581 is a Washer,lock, manufactured by Tate Andale, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-648-0581 has 1 manufacturer part number on file: 644500100011910 (Tate Andale, Llc).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-651-7105. Verify interchangeability with system specifications before substitution.
Key specifications for 644500100011910: Outside Diameter: 0.500 INCHES NOMINAL IN; Material Thickness: 0.063 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: LOCKWASHER; End Item Identification: OIL COOLER 202 COMBINATION UNIT STRAINER. 2 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.