The Washer,flat, cataloged under National Stock Number 5310-01-641-1595, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems. 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 | 5310-01-641-1595 |
| Primary Part Number | DAF7257A017-007 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems |
| Status | ACTIVE |
| Surface Treatment Document and Classification | PER AMS 2700,METHOD 1, TYPE 7, CLASS 1. ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 2.50 INCHES NOMINAL 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 | 0.257 INCHES NOMINAL IN |
| Thickness | 0.250 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 |
|---|---|
| DAF7257A017-007 PRIMARY | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
NSN 5310-01-641-1595 is a Washer,flat, manufactured by Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-641-1595 has 1 manufacturer part number on file: DAF7257A017-007 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems).
Key specifications for DAF7257A017-007: Surface Treatment Document and Classification: PER AMS 2700,METHOD 1, TYPE 7, CLASS 1. ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 2.50 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Special Features: CENTER HOLE IS COUNTERBORED ON BOTH SIDES 0.317X90DEGREES. 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.