The Washer,flat, cataloged under National Stock Number 5310-00-079-1219, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Paradigm Manchester Inc. Dba Pursuit Aerospace. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-079-1219 |
| Primary Part Number | 516993 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Paradigm Manchester Inc. Dba Pursuit Aerospace |
| Status | ACTIVE |
| Overall Diameter | 0.330 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 6350 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 4130 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN |
| Thickness | 0.057 INCHES MINIMUM AND 0.067 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 |
|---|---|
| 516993 PRIMARY | Paradigm Manchester Inc. Dba Pursuit Aerospace (USA) |
| 516993 | Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring (USA) |
| 516993 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 516993 | 5/9 Secondary reference Royal Oak Gage, Inc |
| 516993 | 5/9 Secondary reference California Pantograph Engravers Inc |
NSN 5310-00-079-1219 is a Washer,flat, manufactured by Paradigm Manchester Inc. Dba Pursuit Aerospace, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-079-1219 has 3 manufacturer part numbers on file: 516993 (Paradigm Manchester Inc. Dba Pursuit Aerospace), 516993 (Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring), 516993 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
1 possible match (shared part number, not a government interchangeability claim): 7530-00-781-1003. Verify interchangeability with system specifications before substitution.
Key specifications for 516993: Overall Diameter: 0.330 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN; Material Document and Classification: AMS 6350 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: CADMIUM 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.