The Washer,flat, cataloged under National Stock Number 5310-00-239-1964, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ge Aviation Systems Llc. Government technical data includes 9 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 | 5310-00-239-1964 |
| Primary Part Number | 137301-72 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Ge Aviation Systems Llc |
| Status | ACTIVE |
| Overall Diameter | 0.370 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-766 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 316 OR STEEL COMP 324 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.127 INCHES MINIMUM AND 0.131 INCHES MAXIMUM IN |
| Thickness | 0.085 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 |
|---|---|
| 137301-72 PRIMARY | Ge Aviation Systems Llc (USA) |
NSN 5310-00-239-1964 is a Washer,flat, manufactured by Ge Aviation Systems Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-239-1964 has 1 manufacturer part number on file: 137301-72 (Ge Aviation Systems Llc).
Key specifications for 137301-72: Overall Diameter: 0.370 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN; Material Document and Classification: QQ-S-766 FED SPEC ALL MATERIAL RESPONSES OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: PASSIVATE OVERALL. 9 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.