The Washer,flat, cataloged under National Stock Number 5310-00-149-9126, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-149-9126 |
| Primary Part Number | MS20002-10 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN |
| Hardness Rating | 25.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 1330 OR STEEL COMP 4130 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.631 INCHES MINIMUM AND 0.643 INCHES MAXIMUM IN |
| Thickness | 0.052 INCHES MINIMUM AND 0.072 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 | F |
| Part Number | Manufacturer |
|---|---|
| MS20002-10 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| MS20002-10 | Anillo Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| 10082395 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| MS20002-10 | 3/2 Design control — primary reference U.S. Government activity |
| MS20002-10 | 5/9 Secondary reference U.S. Government activity |
| 850853-00 | 5/9 Secondary reference Defense Reduction Agency |
| NAS143-10 | 5/9 Secondary reference Beechcraft Corporation Dba Textron Aviation |
| 5310PL0150702 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 5310001499126 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 124-4322603 PC 127 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| NAS143-10 | 5/9 Secondary reference U.S. Government activity |
| MS20002-10 | 5/9 Secondary reference H. V. Mody, Inc. Dba Mody Aerospace |
| NAS143-10 | 5/9 Secondary reference Textron Aviation Inc |
NSN 5310-00-149-9126 is a Washer,flat, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-149-9126 has 2 manufacturer part numbers on file: MS20002-10 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), MS20002-10 (Anillo Industries Llc).
Key specifications for MS20002-10: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN; Hardness Rating: 25.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL. 12 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.