The Washer,lock, cataloged under National Stock Number 5310-00-510-4304, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 10 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 | 5310-00-510-4304 |
| Primary Part Number | 4912550-03 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Nondefinitive Spec/std Data | B CLASS AND 2 STYLE |
| Hole Diameter | 0.194 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Material | STEEL COMP 302 OVERALL |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.337 INCHES NOMINAL IN |
| Material Thickness | 0.047 INCHES MINIMUM AND 0.053 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Surface Treatment Document and Classification | MIL-F-14072 FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 4912550-03 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| 4912550-03 | Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan (USA) |
NSN 5310-00-510-4304 is a Washer,lock, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-00-510-4304 has 2 cross-referenced part numbers: 4912550-03 (Northrop Grumman Systems Corporation), 4912550-03 (Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan).
There is 1 known substitute for 5310-00-510-4304: 5310-00-933-8120. Verify interchangeability with system specifications before substitution.
Key specifications for 4912550-03: Nondefinitive Spec/std Data: B CLASS AND 2 STYLE; Hole Diameter: 0.194 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN; Style Designator: SPLIT HELICAL-RIGHT HAND; Material: STEEL COMP 302 OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.