The Washer,flat, cataloged under National Stock Number 5310-01-599-5353, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Transpec Fasteners, Inc. Dba Transpec Fasteners Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-599-5353 |
| Primary Part Number | TSF21X50WSPFP.049 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Transpec Fasteners, Inc. Dba Transpec Fasteners Inc |
| Status | ACTIVE |
| Overall Diameter | 0.505 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PHOSPHATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.221 INCHES NOMINAL IN |
| Thickness | 0.049 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 |
|---|---|
| TSF21X50WSPFP.049 PRIMARY | Transpec Fasteners, Inc. Dba Transpec Fasteners Inc (USA) |
| Reference | Meaning |
|---|---|
| TSF21X50WSPFP.04 | 5/9 Secondary reference Transpec Fasteners, Inc. Dba Transpec Fasteners Inc |
NSN 5310-01-599-5353 is a Washer,flat, manufactured by Transpec Fasteners, Inc. Dba Transpec Fasteners Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-599-5353 has 1 manufacturer part number on file: TSF21X50WSPFP.049 (Transpec Fasteners, Inc. Dba Transpec Fasteners Inc).
Key specifications for TSF21X50WSPFP.049: Overall Diameter: 0.505 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: PHOSPHATE OVERALL; Peripheral Shape Style: ROUND. 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.