The Washer,flat, cataloged under National Stock Number 5310-00-377-0699, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Reliable Fasteners, Inc.. 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-377-0699 |
| Primary Part Number | RE620C1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Reliable Fasteners, Inc. |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.130 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-766,300 SERIES FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN |
| Thickness | 0.016 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 |
|---|---|
| RE620C1 PRIMARY | Reliable Fasteners, Inc. (USA) |
| Reference | Meaning |
|---|---|
| RE620C1 | 3/9 Design control — primary reference Reliable Industries Inc Dba Reliable Fastener Products |
| SK138356-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| 138356-1 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| 138356-0001 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| RE620C1 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-00-377-0699 is a Washer,flat, manufactured by Reliable Fasteners, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-377-0699 has 1 manufacturer part number on file: RE620C1 (Reliable Fasteners, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 6240-01-316-0487. Verify interchangeability with system specifications before substitution.
Key specifications for RE620C1: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.130 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN; Material Document and Classification: QQ-S-766,300 SERIES FED 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.