The Washer,flat, cataloged under National Stock Number 5310-00-262-4535, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-262-4535 |
| Primary Part Number | 0188-3 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OVERALL |
| Overall Diameter | 0.250 INCHES NOMINAL IN |
| Center Hole Shape Style | ROUND |
| Material Document and Classification | MIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 3RD MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 4TH MATERIAL RESPONSE OVERALL |
| Thickness | 0.032 INCHES NOMINAL IN |
| Peripheral Shape Style | ROUND |
| Cross-Sectional Shape Style | RECTANGULAR |
| Hole Diameter | 0.089 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5310-00-262-4535 is a Washer,flat, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-00-262-4535 has 2 cross-referenced part numbers: 0188-3 (Lockheed Martin Corporation Div Rms - Mitchel Field), WF2SS (Entron Industries Limited Partnership Dba Entron Industries Property Div).
There is 1 known substitute for 5310-00-262-4535: 4730-01-478-5134. Verify interchangeability with system specifications before substitution.
Key specifications for 0188-3: Material: STEEL CORROSION RESISTING OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OVERALL; Overall Diameter: 0.250 INCHES NOMINAL IN; Center Hole Shape Style: ROUND; Material Document and Classification: MIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 3RD MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 4TH MATERIAL RESPONSE OVERALL. 8 total characteristics are documented in the Federal Logistics Information System.