The Washer,flat, cataloged under National Stock Number 5310-01-142-7767, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Circor Aerospace, Inc. Div Circor. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-142-7767 |
| Primary Part Number | 5035L034-1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Circor Aerospace, Inc. Div Circor |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TYPE II,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.562 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 4140 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.315 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| Thickness | 0.062 INCHES MINIMUM AND 0.064 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 |
|---|---|
| 5035L034-1 PRIMARY | Circor Aerospace, Inc. Div Circor (USA) |
NSN 5310-01-142-7767 is a Washer,flat, manufactured by Circor Aerospace, Inc. Div Circor, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-142-7767 has 1 manufacturer part number on file: 5035L034-1 (Circor Aerospace, Inc. Div Circor).
Key specifications for 5035L034-1: Surface Treatment Document and Classification: QQ-P-416,TYPE II,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.562 INCHES NOMINAL IN; Material Document and Classification: MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE 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.