The Washer,flat, cataloged under National Stock Number 5310-00-790-2990, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Jergens Inc Div Tooling Components Division. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5310-00-790-2990 |
| Primary Part Number | 31905 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Jergens Inc Div Tooling Components Division |
| Status | CANCELLED |
| Center Hole Shape Style | ROUND |
| Color | BLACK OVERALL |
| Surface Treatment | OXIDE FILM OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Overall Diameter | 1.125 INCHES NOMINAL IN |
| Thickness | 0.125 INCHES NOMINAL IN |
| Features Provided | CASEHARDENED |
| Hole Diameter | 0.531 INCHES NOMINAL IN |
| Hardness Rating | 56.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| ADB-26575 | Mjt Holdings Llc (USA) |
| 6002 | Hutchinson Aerospace & Industry, Inc. Dba Vlier Div Vlier (USA) |
| 31905 PRIMARY | Jergens Inc Div Tooling Components Division (USA) |
| CL2FW | Carr Lane Manufacturing Co (USA) |
| PFW500 | Jergens Inc Div Tooling Components Division (USA) |
NSN 5310-00-790-2990 is a Washer,flat, manufactured by Jergens Inc Div Tooling Components Division, classified under FSC 5310 (No Item Name Available). Status: cancelled.
NSN 5310-00-790-2990 has 5 cross-referenced part numbers: ADB-26575 (Mjt Holdings Llc), 6002 (Hutchinson Aerospace & Industry, Inc. Dba Vlier Div Vlier), 31905 (Jergens Inc Div Tooling Components Division), CL2FW (Carr Lane Manufacturing Co), PFW500 (Jergens Inc Div Tooling Components Division).
There are 3 known substitutes for 5310-00-790-2990: 5940-00-283-5281, 9905-01-468-7329, 6515-01-604-1894. Verify interchangeability with system specifications before substitution.
Key specifications for 31905: Center Hole Shape Style: ROUND; Color: BLACK OVERALL; Surface Treatment: OXIDE FILM OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 11 total characteristics are documented in the Federal Logistics Information System.
NSN 5310-00-790-2990 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.