The Washer,flat, cataloged under National Stock Number 5310-01-426-7124, 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 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-426-7124 |
| Primary Part Number | NAS1149F0963P |
| 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-416 TY 2, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 1.057 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-7952 MIL SPEC 1ST MATERIAL RESPONSE OR ASTM A109 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Specification/standard Data | 80205-NAS1149 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 1020 OR STEEL COMP 1025 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.573 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN |
| Thickness | 0.063 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 |
|---|---|
| NAS1149F0963P | Leonardo Spa Helicopters Division - Production Site (ITA) |
| Reference | Meaning |
|---|---|
| NAS1149F0963P | 6/9 Informative reference only Malaysian Army |
| 28KP714 | C/1 Advisory reference — outside the item-of-supply concept Oshkosh Corp |
| 94744A285 | C/1 Advisory reference — outside the item-of-supply concept Mcmaster-Carr Supply Co |
| NAS1149F0963P | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-426-7124 is a Washer,flat, manufactured by Leonardo Spa Helicopters Division - Production Site, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-426-7124 has 1 manufacturer part number on file: NAS1149F0963P (Leonardo Spa Helicopters Division - Production Site).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-596-3762. Verify interchangeability with system specifications before substitution.
Key specifications for NAS1149F0963P: Surface Treatment Document and Classification: QQ-P-416 TY 2, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 1.057 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-7952 MIL SPEC 1ST MATERIAL RESPONSE OR ASTM A109 ASSN STD 2ND 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.
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.