The Washer,lock, cataloged under National Stock Number 5310-00-058-3873, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 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 | 5310-00-058-3873 |
| Primary Part Number | 164-18 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Outside Diameter | 1.271 INCHES MAXIMUM IN |
| Material | STEEL COMP 302 AND STEEL COMP 420 OVERALL |
| Material Thickness | 0.188 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN |
| Hole Diameter | 0.763 INCHES MINIMUM AND 0.783 INCHES MAXIMUM IN |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Nondefinitive Spec/std Data | 2 STYLE AND C CLASS |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Surface Treatment | PASSIVATE OVERALL |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OR 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 164-18 | Lockheed Martin Corporation Div Rms (USA) |
| MS35338-89 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| 583873 | CAGE 00000 |
| 164-18 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
NSN 5310-00-058-3873 is a Washer,lock, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-00-058-3873 has 4 cross-referenced part numbers: 164-18 (Lockheed Martin Corporation Div Rms), MS35338-89 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 583873, 164-18 (Lockheed Martin Corporation Div Rms - Mitchel Field).
There are 9 known substitutes for 5310-00-058-3873: 4730-00-050-4203, 5330-00-246-8168, 2805-00-374-9746 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for 164-18: Outside Diameter: 1.271 INCHES MAXIMUM IN; Material: STEEL COMP 302 AND STEEL COMP 420 OVERALL; Material Thickness: 0.188 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN; Hole Diameter: 0.763 INCHES MINIMUM AND 0.783 INCHES MAXIMUM IN. 10 total characteristics are documented in the Federal Logistics Information System.