The Washer,flat, cataloged under National Stock Number 5310-01-234-7599, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Specialty Washer Co of South Carolina Inc. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-234-7599 |
| Primary Part Number | 4300019-4 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Specialty Washer Co of South Carolina Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35,TY 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.098 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 304 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.055 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Thickness | 0.011 INCHES MINIMUM AND 0.013 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 |
|---|---|
| 4300019-4 PRIMARY | Specialty Washer Co of South Carolina Inc (USA) |
| Reference | Meaning |
|---|---|
| 4300019-4 | 5/9 Secondary reference Phoenix Specialty Mfg Co Inc |
| 4300019-4 | C/1 Advisory reference — outside the item-of-supply concept The Boeing Company Div Defense |
| 4300019-4 | 7/9 Vendor item drawing reference Mcdonnell Douglas Corp Mcdonnell Douglas Aerospace Opns West |
NSN 5310-01-234-7599 is a Washer,flat, manufactured by Specialty Washer Co of South Carolina Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-234-7599 has 1 manufacturer part number on file: 4300019-4 (Specialty Washer Co of South Carolina Inc).
Key specifications for 4300019-4: Surface Treatment Document and Classification: QQ-P-35,TY 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.098 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN; 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.