The Washer,flat, cataloged under National Stock Number 5310-00-579-1988, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Roller Bearing Co of America, Inc Div Pic Design. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5310-00-579-1988 |
| Primary Part Number | B4-2 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Roller Bearing Co of America, Inc Div Pic Design |
| Status | CANCELLED |
| Surface Treatment Document and Classification | MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hole Diameter | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Material | STEEL COMP 303SE OVERALL |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OR ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Center Hole Shape Style | ROUND |
| Peripheral Shape Style | ROUND |
| Overall Diameter | 0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN |
| Thickness | 0.004 INCHES MINIMUM AND 0.008 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| DB4D2 | Allied Devices Corp Dba Absolute Precision Co (USA) |
| 10594609-3 | Us Army Aviation and Missile Command (USA) |
| B4-2 PRIMARY | Roller Bearing Co of America, Inc Div Pic Design (USA) |
| 10121522 | Nimikkeistokeskus Ncb Finland (FIN) |
| 1650407-2 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| PR45-34 | Eldec Aerospace Corp (USA) |
| 555-00-000000052 | Diehl Defence Gmbh & Co. Kg (DEU) |
NSN 5310-00-579-1988 is a Washer,flat, manufactured by Roller Bearing Co of America, Inc Div Pic Design, classified under FSC 5310 (No Item Name Available). Status: cancelled.
NSN 5310-00-579-1988 has 7 cross-referenced part numbers: DB4D2 (Allied Devices Corp Dba Absolute Precision Co), 10594609-3 (Us Army Aviation and Missile Command), B4-2 (Roller Bearing Co of America, Inc Div Pic Design), 10121522 (Nimikkeistokeskus Ncb Finland), 1650407-2 (Lockheed Martin Corporation Div Rms - Mitchel Field) and 2 more.
There are 12 known substitutes for 5310-00-579-1988: 5975-00-014-0784, 3455-00-228-5223, 6110-00-443-6993 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for B4-2: Surface Treatment Document and Classification: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Hole Diameter: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN; Material: STEEL COMP 303SE OVERALL; Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OR ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.
NSN 5310-00-579-1988 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.