The Washer,flat, cataloged under National Stock Number 5310-00-802-1988, 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-802-1988 |
| Primary Part Number | B4-4 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Roller Bearing Co of America, Inc Div Pic Design |
| Status | ACTIVE |
| Material | STEEL COMP 303 OVERALL |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Surface Treatment | PASSIVATE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Thickness | 0.008 INCHES MINIMUM AND 0.012 INCHES MAXIMUM IN |
| Hole Diameter | 0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Center Hole Shape Style | ROUND |
| Peripheral Shape Style | ROUND |
| Overall Diameter | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 671-451-9004 | Designatronics Inc Perfect Gear and Instrument Div (USA) |
| 404-7277 | Nimikkeistokeskus Ncb Finland (FIN) |
| B4-4 PRIMARY | Roller Bearing Co of America, Inc Div Pic Design (USA) |
| 22 021-006 | Rockwell Collins Deutschland Gmbh Div Rockwell Collins International & Service Solutions (DEU) |
| 1754570-4 | Honeywell International Inc. Dba Honeywell International (USA) |
| G68 | Designatronics Incorporated Div Sterling Instruments Div (USA) |
| 910229-04 | Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan (USA) |
| SA1176-4 | Avionics Specialties, Inc. (USA) |
| 5030-1004 | Designatronics Inc Perfect Gear and Instrument Div (USA) |
| CSPP1-8-4 | Allmetal Screw Products Corp (USA) |
| G68-4 | Designatronics Incorporated Div Sterling Instruments Div (USA) |
NSN 5310-00-802-1988 is a Washer,flat, manufactured by Roller Bearing Co of America, Inc Div Pic Design, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-00-802-1988 has 11 cross-referenced part numbers: 671-451-9004 (Designatronics Inc Perfect Gear and Instrument Div), 404-7277 (Nimikkeistokeskus Ncb Finland), B4-4 (Roller Bearing Co of America, Inc Div Pic Design), 22 021-006 (Rockwell Collins Deutschland Gmbh Div Rockwell Collins International & Service Solutions), 1754570-4 (Honeywell International Inc. Dba Honeywell International) and 6 more.
There are 9 known substitutes for 5310-00-802-1988: 5340-00-045-4689, 5330-00-140-7684, 3220-00-204-4923 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for B4-4: Material: STEEL COMP 303 OVERALL; Material Document and Classification: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Surface Treatment: PASSIVATE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 9 total characteristics are documented in the Federal Logistics Information System.