The Washer,flat, cataloged under National Stock Number 5310-01-384-4656, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 14 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-384-4656 |
| Primary Part Number | NAS1149C0732R |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Leonardo Spa Helicopters Division - Production Site |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 MIL SPEC ALL TREATMENT RESPONSES OVERALL |
| Overall Diameter | 0.745 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-5059, ANNEALED MIL SPEC ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING AND STEEL COMP 301 AND STEEL COMP 302 AND STEEL COMP 304 OR STEEL COMP 316 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.443 INCHES MINIMUM AND 0.463 INCHES MAXIMUM IN |
| Thickness | 0.028 INCHES MINIMUM AND 0.036 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 |
|---|---|
| NAS1149C0732R | Leonardo Spa Helicopters Division - Production Site (ITA) |
| Reference | Meaning |
|---|---|
| 470466PC123 | 5/9 Secondary reference Garrett Transportation I, Inc. |
| 10354785 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 400138-511 | 5/9 Secondary reference Alliedsignal Inc Dba Allied-Signal Aerospace Co |
| FF-W-92 | 5/9 Secondary reference U.S. Government activity |
| AN960C716L | 5/9 Secondary reference U.S. Government activity |
| 5310PL2203759 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 470466PC123 | 5/9 Secondary reference Alliedsignal Inc Dba Allied-Signal Aerospace Co |
| 400138-511 | 5/9 Secondary reference Garrett Transportation I, Inc. |
| AN960C716L | 5/9 Secondary reference U.S. Government activity |
| 8805897 | 5/9 Secondary reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament |
| 470467PCLN105 | 5/9 Secondary reference Alliedsignal Inc Dba Allied-Signal Aerospace Co |
| 470467PCLN105 | 5/9 Secondary reference Garrett Transportation I, Inc. |
| NAS1149C0732R | 3/2 Design control — primary reference U.S. Government activity |
| NAS1149C0732R | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-384-4656 is a Washer,flat, manufactured by Leonardo Spa Helicopters Division - Production Site, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-384-4656 has 1 manufacturer part number on file: NAS1149C0732R (Leonardo Spa Helicopters Division - Production Site).
Key specifications for NAS1149C0732R: Surface Treatment Document and Classification: QQ-P-35 MIL SPEC ALL TREATMENT RESPONSES OVERALL; Overall Diameter: 0.745 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-5059, ANNEALED MIL SPEC ALL MATERIAL RESPONSES OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 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.
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.