The Ring,retaining, cataloged under National Stock Number 5325-01-158-3167, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Spirolox Inc. Government technical data includes 9 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 | 5325-01-158-3167 |
| Primary Part Number | MR-187 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — No Item Name Available |
| Manufacturer | Spirolox Inc |
| Status | ACTIVE |
| Casehardening Indicator | NOT CASEHARDENED |
| Material | STEEL |
| Inside Diameter | 1.852 INCHES MINIMUM AND 1.862 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | BEVELED ONE OUTSIDE CORNER |
| Ring Style | SPIRAL |
| Major Thickness | 0.167 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN |
| Outside Diameter | 2.019 INCHES MINIMUM AND 2.039 INCHES MAXIMUM IN |
| Usage Design | EXTERNAL |
| Minor Thickness | 0.060 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5325-01-158-3167 is a Ring,retaining, manufactured by Spirolox Inc, classified under FSC 5325 (No Item Name Available). Status: active.
NSN 5325-01-158-3167 has 2 cross-referenced part numbers: MR-187 (Spirolox Inc), 12286986 (U S Army Tank Automotive Command Amsta-Im-Mm).
There is 1 known substitute for 5325-01-158-3167: 5961-00-981-1631. Verify interchangeability with system specifications before substitution.
Key specifications for MR-187: Casehardening Indicator: NOT CASEHARDENED; End Item Identification: ARMD BATTLE TANK M1E1; Material: STEEL; Inside Diameter: 1.852 INCHES MINIMUM AND 1.862 INCHES MAXIMUM IN. 10 total characteristics are documented in the Federal Logistics Information System.