The Washer,flat, cataloged under National Stock Number 5310-00-809-5997, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Psa Peugeot-Citroen Espana, Sa. Government technical data includes 11 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through both NSN and commercial part number lookups. 15 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5310-00-809-5997 |
| Primary Part Number | MS27183-17 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Psa Peugeot-Citroen Espana, Sa |
| Status | CANCELLED |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 1.243 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Nondefinitive Spec/std Data | A TYPE AND 1 GRADE AND A CLASS |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.495 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN |
| Thickness | 0.064 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| MS27183-17 | Psa Peugeot-Citroen Espana, Sa (ESP) |
| Reference | Meaning |
|---|---|
| XX002-0536 | 5/9 Secondary reference Rdm Technology B.v. |
| 145-4510923-104 | 5/1 Secondary reference Rohr, Inc. Dba Rohr Industries Inc Div Rohr Inc., a Part of Collins Aerospace |
| 92141A033 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 5310008095997 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 5310PL0793562 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 145-4510924M27 | 5/1 Secondary reference Rohr, Inc. Dba Rohr Industries Inc Div Rohr Inc., a Part of Collins Aerospace |
| 2BD575 | C/1 Advisory reference — outside the item-of-supply concept Oshkosh Corp |
| FF-W-92 | 4/1 Identification reference U.S. Government activity |
| MS27183-17 | 2/2 Government specification standardization U.S. Government activity |
| 526-1519 | 5/1 Secondary reference Cummins Power Generation Inc. |
| MS27183-17 1/2- DIA STL | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| SK-2000-8 | 5/1 Secondary reference Gse Management Co |
| F-167-210 PIECE 422 | C/1 Advisory reference — outside the item-of-supply concept Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric |
| 345-10032 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 10398544 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5310-00-809-5997 is a Washer,flat, manufactured by Psa Peugeot-Citroen Espana, Sa, classified under FSC 5310, Nuts and Washers. Status: cancelled.
NSN 5310-00-809-5997 has 1 manufacturer part number on file: MS27183-17 (Psa Peugeot-Citroen Espana, Sa).
2 possible matches (shared part number, not a government interchangeability claim): 5310-01-399-0439, 5310-01-566-5342. Verify interchangeability with system specifications before substitution.
Key specifications for MS27183-17: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 1.243 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN; Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 11 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.
NSN 5310-00-809-5997 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.