The Washer,flat, cataloged under National Stock Number 5310-00-687-7738, 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 22 commercial cross-references from 19 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5310-00-687-7738 |
| Primary Part Number | B4-8 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Roller Bearing Co of America, Inc Div Pic Design |
| Status | CANCELLED |
| Cross-Sectional Shape Style | RECTANGULAR |
| Hole Diameter | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM A582,COND A ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Material | STEEL COMP 303 OR STEEL COMP 303SE OVERALL |
| Surface Treatment | PASSIVATE OVERALL |
| Surface Treatment Document and Classification | MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Center Hole Shape Style | ROUND |
| Thickness | 0.029 INCHES MINIMUM AND 0.033 INCHES MAXIMUM IN |
| Peripheral Shape Style | ROUND |
| Overall Diameter | 0.184 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| B4-8 | Roller Bearing Co of America, Inc Div Pic Design (USA) |
| A07817 | Mbda Uk Ltd (GBR) |
| SS1-13 | W. M. Berg, Inc. (USA) |
| 1065503 | Herley Chicago Dba Stewart Warner Electronics (USA) |
| CPSS1-8-8 | Allmetal Screw Products Corp (USA) |
| 235-1-431 | Bae Systems Information and Electronic Systems Integration Inc. (USA) |
| 001-0451-1B | Danka Office Imaging Company (USA) |
| C531-2-8 | Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company (USA) |
| G68-8 | Designatronics Incorporated Div Sterling Instruments Div (USA) |
| 116126-4 | Transicoil Llc Dba Ads Transicoil Div Transicoil (USA) |
| 001-0451-1B | Eastman Kodak Co Commercial & Government Systems (USA) |
| 10594609-17 | CAGE 00000 |
| 910229-08 | Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan (USA) |
| 5030-1008 | Designatronics Inc Perfect Gear and Instrument Div (USA) |
| 10594609-17 | Us Army Aviation and Missile Command (USA) |
| 120421-008 | Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems (USA) |
| 1065503G001 | L3harris Technologies, Inc. (USA) |
| 235-1-431 | Kearfott Corporation Div Guidance and Navigation Division (USA) |
| 671-451-9008 | Designatronics Inc Perfect Gear and Instrument Div (USA) |
| 1065503 | L3harris Technologies, Inc. (USA) |
NSN 5310-00-687-7738 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 5310-00-687-7738 has 22 cross-referenced part numbers: B4-8 (Roller Bearing Co of America, Inc Div Pic Design), A07817 (Mbda Uk Ltd), SS1-13 (W. M. Berg, Inc.), 1065503 (Herley Chicago Dba Stewart Warner Electronics), CPSS1-8-8 (Allmetal Screw Products Corp) and 17 more.
There are 11 known substitutes for 5310-00-687-7738: 3030-00-232-5979, 3120-00-420-5772, 5962-00-824-3537 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for B4-8: Cross-Sectional Shape Style: RECTANGULAR; Hole Diameter: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN; Material Document and Classification: ASTM A582,COND A ASSN STD ALL MATERIAL RESPONSES OVERALL; Material: STEEL COMP 303 OR STEEL COMP 303SE OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.
NSN 5310-00-687-7738 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.