The Ring,retaining, cataloged under National Stock Number 5325-01-280-7144, 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 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-280-7144 |
| Primary Part Number | RST-275-S |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — No Item Name Available |
| Manufacturer | Spirolox Inc |
| Status | ACTIVE |
| Ring Style | SPIRAL |
| Major Thickness | 0.090 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN |
| Strength Rating | ERR-060 |
| Material Document and Classification | FED STD 66 FED STD 1ST MATERIAL RESPONSE OR AISI 302 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 30302 ASSN STD SINGLE MATERIAL RESPONSE AND MIL-S-5059, TYPE 302 MIL SPEC 2ND MATERIAL RESPONSE AND QQ-S-766, CLASS 302 FED SPEC 3RD MATERIAL RESPONSE |
| Material | STEEL COMP 302 |
| Cross-Sectional Shape Style | DOUBLE OVAL |
| Outside Diameter | 2.980 INCHES NOMINAL IN |
| Inside Diameter | 2.574 INCHES MINIMUM AND 2.604 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Usage Design | EXTERNAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| WST-275-S02 | Smalley Steel Ring Co. (USA) |
| 3529 | Zf Industrieantriebe Witten Gmbh (DEU) |
| RST-275-S PRIMARY | Spirolox Inc (USA) |
NSN 5325-01-280-7144 is a Ring,retaining, manufactured by Spirolox Inc, classified under FSC 5325 (No Item Name Available). Status: active.
NSN 5325-01-280-7144 has 3 cross-referenced part numbers: WST-275-S02 (Smalley Steel Ring Co.), 3529 (Zf Industrieantriebe Witten Gmbh), RST-275-S (Spirolox Inc).
There are 12 known substitutes for 5325-01-280-7144: 5935-00-201-8480, 2825-00-446-9057, 4720-00-473-4693 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for RST-275-S: Ring Style: SPIRAL; Major Thickness: 0.090 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN; Strength Rating: ERR-060; Material Document and Classification: FED STD 66 FED STD 1ST MATERIAL RESPONSE OR AISI 302 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 30302 ASSN STD SINGLE MATERIAL RESPONSE AND MIL-S-5059, TYPE 302 MIL SPEC 2ND MATERIAL RESPONSE AND QQ-S-766, CLASS 302 FED SPEC 3RD MATERIAL RESPONSE. 10 total characteristics are documented in the Federal Logistics Information System.