The Washer,flat, cataloged under National Stock Number 5310-00-167-0804, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Leonardo Spa Helicopters Division - Production Site. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 37 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-167-0804 |
| Primary Part Number | NAS1149C0663R |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Leonardo Spa Helicopters Division - Production Site |
| Status | CANCELLED |
| Overall Diameter | 0.620 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 3RD MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 4TH MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Nondefinitive Spec/std Data | A TYPE AND 2 GRADE AND B CLASS |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.380 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN |
| Thickness | 0.053 INCHES MINIMUM AND 0.073 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 |
|---|---|
| NAS1149C0663R | Leonardo Spa Helicopters Division - Production Site (ITA) |
| 999-0061-30-716 | Leonardo Spa Helicopters Division - Production Site (ITA) |
| 407 678 | Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company (USA) |
| NAS1149C0663R | Anillo Industries Llc (USA) |
| 938.77.61.019 | Pilatus Aircraft Ltd (CHE) |
| NAS1149C0663R | Leonardo Uk Ltd (GBR) |
| ASNA2397C616 | Airbus Operations (FRA) |
| Reference | Meaning |
|---|---|
| 5310001670804 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| AN960C616 | 5/9 Secondary reference U.S. Government activity |
| 416631-9 | E/8 Replaced / superseded reference U.S. Government activity |
| 004-003081-038 | 5/1 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple |
| FF-W-92 | 4/1 Identification reference U.S. Government activity |
| 006-0007-33 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 166216PC6 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 801-6641190FNA40 | 5/1 Secondary reference Naval Sea Systems Command |
| AN960-C616 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| AN960C6616 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 945723-2162 | 5/1 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| 890460 | 5/1 Secondary reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament |
| A-807828C ITEM 3 | 5/9 Secondary reference Leeds and Northrup Co a Unit of General Signal Corp |
| 8107247 | 5/1 Secondary reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament |
| 5310PL0139737 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 236M0010P009 | 5/9 Secondary reference Raytheon Company Div Corp |
| GW10C-616 | E/8 Replaced / superseded reference Northrop Grumman Systems Corporation |
| 3337810-19 | C/1 Advisory reference — outside the item-of-supply concept Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| 70077-0768 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 8107247 | 5/9 Secondary reference Us Army Aviation and Missile Command |
NSN 5310-00-167-0804 is a Washer,flat, manufactured by Leonardo Spa Helicopters Division - Production Site, classified under FSC 5310, Nuts and Washers. Status: cancelled.
NSN 5310-00-167-0804 has 7 manufacturer part numbers on file: NAS1149C0663R (Leonardo Spa Helicopters Division - Production Site), 999-0061-30-716 (Leonardo Spa Helicopters Division - Production Site), 407 678 (Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company), NAS1149C0663R (Anillo Industries Llc), 938.77.61.019 (Pilatus Aircraft Ltd) and 2 more.
5 possible matches (shared part number, not a government interchangeability claim): 5310-00-184-8636, 5310-00-904-4111, 5998-01-355-4296. Verify interchangeability with system specifications before substitution.
Key specifications for NAS1149C0663R: Overall Diameter: 0.620 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 3RD MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 4TH MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Nondefinitive Spec/std Data: A TYPE AND 2 GRADE AND B CLASS. 10 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 5310-00-167-0804 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.